@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@600;700&display=swap');

    :root {
      --bg: #d9d9d9;
      --text: #111827;
      --card: white;
      --border: #d1d5db;
      --accent: #1e3a8a;
      --accent-light: #3b5ccc;
      --modo-bg: #f3f5ff;
      --modo-text: #1e3a8a;
      --modo-border: #d4ddff;
      --article-bg: #f8fafc;
      --muted-text: #6b7280;
      --focus-contrast: #000;
      --focus-surface: rgba(0, 0, 0, 0.02);
      --materia-underline: #000;
      --selection-bg: #dbeafe;
      --selection-text: #0f172a;
      --search-highlight-outline: #93c5fd;
      --search-highlight-glow: rgba(147, 197, 253, 0.35);
      --search-highlight-outline-active: #60a5fa;
      --search-highlight-glow-active: rgba(96, 165, 250, 0.45);
      --search-highlight-mark: #dbeafe;
      --search-highlight-mark-active: #bfdbfe;
      --zoom-scale: 1;
      --layout-max-width: 1450px;
      --layout-padding: 22px;
      --panel-min-height: clamp(440px, 68vh, 680px);
      --space-2: 8px;
      --space-3: 12px;
      --space-4: 16px;
      --space-5: 20px;
      --section-gap: 18px;
      --danger-bg: #fef2f2;
      --danger-hover-bg: #fee2e2;
      --danger-border: rgba(220, 38, 38, 0.42);
      --danger-border-strong: rgba(239, 68, 68, 0.62);
      --danger-text: #b91c1c;
      --danger-solid-bg: #dc2626;
      --danger-solid-hover: #b91c1c;
      --danger-solid-border: #b91c1c;
      --danger-solid-text: #fff;
      --card-shadow-elevated: 0 6px 16px rgba(0, 0, 0, 0.1);
      --grade-muted-text: #4b5563;
      --grade-subtle-text: #374151;
      --grade-placeholder: #4b5563;
      --grade-input-bg: #ffffff;
      --grade-row-bg: #f8fafc;
      --grade-summary-icon: #475569;
    }

    body.oscuro {
      --bg: #0d1117;
      --text: #e6edf3;
      --card: #161b22;
      --border: #30363d;
      --accent: #3b82f6;
      --accent-light: #60a5fa;
      --modo-bg: #3a3f46;
      --modo-text: #ffffff;
      --modo-border: #3a3f46;
      --article-bg: #1c2128;
      --muted-text: #9ca3af;
      --focus-contrast: #fff;
      --focus-surface: rgba(255, 255, 255, 0.08);
      --materia-underline: #e6edf3;
      --selection-bg: rgba(96, 165, 250, 0.32);
      --selection-text: #e6edf3;
      --search-highlight-outline: #60a5fa;
      --search-highlight-glow: rgba(96, 165, 250, 0.35);
      --search-highlight-outline-active: #93c5fd;
      --search-highlight-glow-active: rgba(147, 197, 253, 0.45);
      --search-highlight-mark: rgba(96, 165, 250, 0.32);
      --search-highlight-mark-active: rgba(96, 165, 250, 0.5);
      --danger-bg: rgba(239, 68, 68, 0.12);
      --danger-hover-bg: rgba(248, 113, 113, 0.18);
      --danger-border: rgba(248, 113, 113, 0.5);
      --danger-border-strong: rgba(252, 165, 165, 0.68);
      --danger-text: #fca5a5;
      --danger-solid-bg: #dc2626;
      --danger-solid-hover: #b91c1c;
      --danger-solid-border: #b91c1c;
      --danger-solid-text: #fff;
      --card-shadow-elevated: 0 12px 26px rgba(0,0,0,0.42);
      --grade-muted-text: #d1d5db;
      --grade-subtle-text: #e5e7eb;
      --grade-placeholder: #cbd5e1;
      --grade-input-bg: #0f172a;
      --grade-row-bg: #1f2937;
      --grade-summary-icon: #cbd5e1;
    }

    body {
      font-family: "Segoe UI", Arial, sans-serif;
      margin: 0;
      padding: 0;
      background: var(--bg);
      color: var(--text);
      transition: 0.25s ease;
      overflow-x: hidden;
    }

    /* Mantiene visible solo la barra de desplazamiento principal de la app */
    body * {
      -ms-overflow-style: none;
      scrollbar-width: none;
    }

    body *::-webkit-scrollbar {
      display: none;
      width: 0;
      height: 0;
    }

    body.fondo-personalizado {
      background-size: cover;
      background-repeat: no-repeat;
      background-attachment: fixed;
      background-position: center;
    }

    .app-root {
      min-height: 100vh;
      touch-action: pan-y;
    }

    .container {
      display: flex;
      flex-direction: column;
      height: 100%;
      min-height: calc(100vh - 80px);
    }

    .zoom-canvas {
      zoom: var(--zoom-scale);
      width: calc(100% / var(--zoom-scale));
      min-width: calc(100vw / var(--zoom-scale));
      margin-inline: auto;
      position: relative;
      left: 50%;
      transform: translateX(-50%);
    }

    body.zooming,
    body.zooming * {
      transition: none !important;
      animation: none !important;
    }

    header {
      background: var(--accent);
      color: white;
      padding: 20px;
      text-align: center;
      font-size: 28px;
      box-shadow: 0 2px 12px rgba(0,0,0,0.2);
      width: 100%;
      box-sizing: border-box;
      background-size: cover;
      background-position: center;
      background-repeat: no-repeat;
      position: relative;
      overflow: hidden;
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 6px;
    }

    header.banner-con-imagen {
      color: #f8fafc;
      text-shadow: 0 1px 4px rgba(0, 0, 0, 0.45);
      background-color: var(--accent);
    }

    body.oscuro header.banner-con-imagen {
      background-color: var(--bg);
    }


body.banner-sin-fondo header:not(.banner-con-imagen) {
  background: transparent;
  box-shadow: none;
}

body.banner-sin-fondo header:not(.banner-con-imagen)::after {
  display: none;
}

    header::after {
      content: "";
      position: absolute;
      inset: 0;
      background: radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.12), transparent 35%),
        radial-gradient(circle at 80% 0%, rgba(255, 255, 255, 0.08), transparent 30%);
      pointer-events: none;
      mix-blend-mode: soft-light;
    }

    .banner-top {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 6px;
    }

    .app-title {
      margin: 0;
      font-family: 'Poppins', 'Segoe UI', Arial, sans-serif;
      font-weight: 700;
      font-size: 30px;
      letter-spacing: 0.2px;
    }

    .modo {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: var(--modo-bg);
      color: var(--modo-text);
      border-radius: 999px;
      padding: 8px 16px;
      font-weight: 700;
      font-size: 13px;
      border: 1px solid var(--modo-border);
      cursor: pointer;
      transition: background-color 0.2s ease, transform 0.1s ease;
      box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
      line-height: 1.1;
      min-height: 32px;
      height: 32px;
      min-width: 130px;
    }

    .modo:hover {
      transform: translateY(-0.5px);
      box-shadow: 0 2px 6px rgba(0, 0, 0, 0.26);
    }

    .banner-upload {
      min-width: 130px;
      height: 32px;
    }

    .fondo-actions {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      margin-top: 2px;
    }

    .fondo-actions {
      margin-top: 6px;
    }

    .banner-reset {
      min-width: 130px;
      height: 32px;
    }

.container {
  width: min(98vw, var(--layout-max-width));
  max-width: none;
  margin: var(--section-gap) auto 24px;
  background: var(--card);
  padding: var(--layout-padding);
  border-radius: 14px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.12);
  box-sizing: border-box; /* ← MUY IMPORTANTE */
}

    h2 {
      margin: 0 0 16px 0;
      padding-left: 12px;
      border-left: 5px solid var(--accent);
      color: var(--accent);
      font-size: 22px;
    }

    label {
      font-weight: bold;
      display: block;
      margin: 18px 0 8px;
    }

    input, select {
      padding: 14px;
      width: 100%;
      border: 2px solid var(--border);
      border-radius: 10px;
      background: var(--card);
      font-size: 16px;
      color: var(--text);
      box-sizing: border-box;
      transition: 0.25s ease;
    }

    input:focus,
    textarea:focus,
    .articulo-contenido:focus {
      outline: none !important;
      border-color: var(--focus-contrast) !important;
      box-shadow: none !important;
    }

    select:focus {
      outline: none !important;
      border-color: var(--focus-contrast) !important;
      box-shadow: none !important;
    }

    input:focus-visible,
    textarea:focus-visible,
    select:focus-visible,
    button:focus,
    button:focus-visible {
      outline: none !important;
      box-shadow: none !important;
    }

    .nota-box {
      font-family: "Segoe UI Semibold", Arial, sans-serif !important;
      font-size: 16px;
    }

    .materia-title {
      font-size: 21px;
      font-weight: bold;
      border-bottom: 2px solid var(--materia-underline);
      padding-bottom: 6px;
      flex: 1;
      cursor: text;
      caret-color: var(--focus-contrast) !important;
    }

    body.oscuro .nota-box {
      color: #fff !important;
    }

    select { appearance: none; }

    .btn-primary {
      background: var(--accent);
      color: white;
      padding: 14px;
      font-size: 16px;
      font-weight: bold;
      width: 100%;
      border: none;
      margin-top: 20px;
      border-radius: 10px;
      cursor: pointer;
      transition: 0.2s;
    }

    .barra-superior {
      position: absolute;
      top: 18px;
      right: 18px;
      display: inline-flex;
      align-items: center;
      gap: 10px;
    }

    .buscador-btn {
      background: var(--accent);
      color: white;
      border: none;
      border-radius: 10px;
      padding: 10px 12px;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      cursor: pointer;
      transition: background 0.2s ease, transform 0.15s ease;
      font-weight: 600;
      letter-spacing: 0.1px;
    }

    .buscador-btn svg {
      width: 16px;
      height: 16px;
      stroke: currentColor;
    }

    .buscador-btn:hover { background: var(--accent-light); }

    .buscador-btn:active { transform: translateY(1px); }

    .zoom-btn {
      background: var(--card);
      border: 2px solid var(--border);
      color: var(--text);
      border-radius: 10px;
      width: 42px;
      height: 38px;
      font-size: 16px;
      font-weight: 700;
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      transition: transform 0.1s ease, border-color 0.2s ease, background 0.2s ease;
    }

    .zoom-btn + .zoom-btn {
      margin-left: 6px;
    }

    .zoom-btn:hover {
      background: var(--accent-light);
      color: #fff;
      border-color: var(--accent-light);
    }

    .zoom-btn:active { transform: translateY(1px); }

    .btn-primary:hover { background: var(--accent-light); }

    .btn-small,
    .btn-note,
    .btn-note-delete {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-width: 120px;
      padding: 8px 12px;
      border-radius: 8px;
      border: none;
      cursor: pointer;
      font-size: 13px;
      font-weight: 600;
      transition: 0.2s;
    }

    .btn-small {
      background: var(--danger-solid-bg);
      color: var(--danger-solid-text);
    }

    .btn-small:hover { background: var(--danger-solid-hover); }


    .btn-note {
      background: var(--accent);
      color: white;
      margin-top: 10px;
      margin-right: 10px;
    }

    .btn-note:hover { background: var(--accent-light); }

    .btn-note-delete {
      background: var(--danger-solid-bg);
      color: var(--danger-solid-text);
      margin-top: 10px;
      margin-right: 10px;
    }

    .btn-note-delete:hover { background: var(--danger-solid-hover); }

.btn-secondary {
  background: #e2e8f0;
  color: #1f2937;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  cursor: pointer;
  font-weight: 700;
  font-size: 13px;
  transition: background 0.2s ease, transform 0.12s ease;
}

.btn-secondary:hover { background: #cbd5e1; }
.btn-secondary:active { transform: translateY(1px); }

body.oscuro .btn-secondary {
  background: #1f2937;
  color: #e5e7eb;
  border-color: #334155;
}

body.oscuro .btn-secondary:hover { background: #334155; }

.documentos-panel {
  margin: 0;
  padding: var(--space-4) var(--space-4) var(--space-5);
  border: none;
  border-radius: 14px;
  background: transparent;
  box-shadow: none;
      display: flex;
      flex-direction: column;
      flex: 1 1 480px;
      min-height: var(--panel-min-height);
      align-self: stretch;
      overflow: hidden;
    }

.documentos-head {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: var(--space-3);
      flex-wrap: wrap;
      margin-bottom: var(--space-3);
    }

    .documentos-title,
    .media-title {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }

    .documentos-title h3,
    .media-title h3 {
      margin: 0;
      font-size: 20px;
      line-height: 1.25;
      color: var(--accent);
    }

    .documentos-title span,
    .media-title span {
      font-size: 14px;
      line-height: 1.45;
      color: #4b5563;
    }

    body.oscuro .documentos-title span,
    body.oscuro .media-title span { color: #e5e7eb; }

    .documentos-acciones {
      display: flex;
      align-items: center;
      gap: var(--space-3);
      flex-wrap: wrap;
    }

    .documentos-btn {
      background: var(--accent);
      color: white;
      padding: 10px 14px;
      border-radius: 10px;
      border: none;
      font-weight: 700;
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      text-align: center;
      transition: background 0.2s ease, transform 0.12s ease;
    }

    .documentos-btn:hover { background: var(--accent-light); }

    .documentos-btn:active { transform: translateY(1px); }

    .documentos-btn.arrastrando {
      background: var(--accent-light);
      box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.15);
    }

    .documentos-hint {
      font-size: 13px;
      color: #4b5563;
      padding: 10px 12px;
      background: rgba(30, 58, 138, 0.06);
      border: 1px solid rgba(30, 58, 138, 0.12);
      border-radius: 10px;
      font-weight: 600;
    }

    body.oscuro .documentos-hint {
      color: #e5e7eb;
      background: rgba(96, 165, 250, 0.12);
      border-color: rgba(96, 165, 250, 0.22);
    }

    .documentos-body {
      display: grid;
      grid-template-columns: minmax(0, 0.55fr) minmax(0, 1.45fr);
      gap: var(--space-4);
      margin-top: var(--space-3);
      align-items: stretch;
      flex: 1;
      min-height: 0;
      overflow: auto;
    }

    .documentos-lista {
      background: var(--card);
      border: 1px solid var(--border);
      border-radius: 12px;
      padding: 14px;
      display: flex;
      flex-direction: column;
      gap: var(--space-3);
      min-height: 260px;
      box-shadow: inset 0 1px 0 rgba(255,255,255,0.04);
      min-width: 0;
      max-height: 100%;
      overflow: auto;
      transition: box-shadow 0.15s ease, background 0.15s ease;
    }

    .documentos-lista.drop-activa,
    .documentos-preview.drop-activa {
      box-shadow: inset 0 0 0 2px var(--accent);
      background: rgba(59, 130, 246, 0.08);
    }

    .documento-item {
      padding: 10px 12px;
      border: 1px solid var(--border);
      border-radius: 10px;
      background: var(--article-bg);
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: var(--space-3);
      min-width: 0;
      cursor: grab;
      contain: paint;
      transform: translateY(0);
      transition: transform 0.15s ease;
    }

    .documento-item:hover {
      transform: translateY(-1px);
    }

    .documento-item:active {
      cursor: grabbing;
      transform: translateY(1px);
    }

    .documento-info {
      display: flex;
      flex-direction: column;
      gap: 2px;
      flex: 1;
      min-width: 0;
      justify-content: center;
    }

    .documento-nombre-wrap {
      display: flex;
      align-items: center;
      min-width: 0;
    }

    .documento-nombre-text,
    .documento-nombre-input {
      font-size: 14px;
      color: var(--text);
      font-weight: 700;
      white-space: nowrap;
      padding: 0 4px;
      overflow: hidden;
      text-overflow: ellipsis;
      width: 100%;
      box-sizing: border-box;
      line-height: 1.45;
    }

    .documento-nombre-text {
      padding: 6px 0;
      border-radius: 6px;
      cursor: default;
      min-width: 0;
      display: block;
    }

    .documento-nombre-input {
      border: 1px solid transparent;
      background: transparent;
      border-radius: 6px;
      padding: 6px 2px;
      transition: border-color 0.15s ease, box-shadow 0.15s ease;
    }

    .documento-nombre-input:focus {
      outline: none;
      border-color: var(--accent-light);
      box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.18);
    }

    .documento-item small {
      color: #6b7280;
      letter-spacing: 0.01em;
    }

    body.oscuro .documento-item small { color: #d1d5db; }

    .documento-acciones {
      display: flex;
      align-items: center;
      gap: 8px;
      flex-shrink: 0;
    }

    .documento-ver,
    .documento-eliminar {
      border: 1px solid var(--border);
      border-radius: 8px;
      padding: 10px 12px;
      cursor: pointer;
      font-weight: 700;
      transition: background 0.2s ease, border-color 0.2s ease, transform 0.12s ease;
      flex-shrink: 0;
    }

    .documento-ver {
      background: white;
      color: var(--text);
    }

    .documento-ver:hover {
      background: rgba(30, 58, 138, 0.08);
      border-color: var(--accent-light);
    }

    .documento-eliminar {
      background: var(--danger-solid-bg);
      color: var(--danger-solid-text);
      border-color: var(--danger-solid-border);
    }

    .documento-eliminar:hover {
      background: var(--danger-solid-hover);
      border-color: var(--danger-solid-hover);
    }

    .documento-ver:active,
    .documento-eliminar:active { transform: translateY(1px); }

    body.oscuro .documento-ver { background: #111827; }

    .documentos-preview {
      border: 1px solid var(--border);
      border-radius: 12px;
      background: var(--card);
      min-height: 320px;
      max-height: 100%;
      padding: 14px;
      box-shadow: inset 0 1px 0 rgba(255,255,255,0.04);
      display: flex;
      flex-direction: column;
      gap: 10px;
      overflow: hidden;
      flex: 1 1 380px;
      min-width: 0;
      position: relative;
    }

    .documentos-preview h4 {
      margin: 0;
      font-size: 16px;
      line-height: 1.3;
      color: var(--accent);
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .documento-preview-titulo {
      flex: 1 1 auto;
      min-width: 0;
      white-space: nowrap;
      padding: 0 4px;
      overflow: hidden;
      text-overflow: ellipsis;
    }

    .documento-preview-nombre-input {
      color: inherit;
      font: inherit;
      font-weight: 700;
      width: 100%;
      min-width: 0;
    }

    .documento-preview-nombre-input:focus {
      color: inherit;
    }

    .documento-preview-head {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 8px;
      width: 100%;
    }


    .documento-preview-ampliar,
    .materia-mover-btn {
      border: 1px solid var(--border);
      background: var(--card);
      color: var(--text);
      border-radius: 8px;
      padding: 6px 10px;
      font-size: 12px;
      font-weight: 700;
      cursor: pointer;
      flex-shrink: 0;
      transition: background 0.18s ease, border-color 0.18s ease, color 0.18s ease;
    }

    .documento-preview-ampliar:hover,
    .materia-mover-btn:hover {
      border-color: var(--accent-light);
      background: rgba(30, 58, 138, 0.08);
    }

    .documento-lectura-card {
      width: min(1200px, 96vw);
      max-width: min(1200px, 96vw);
      max-height: min(92vh, 1000px);
    }

    .documento-lectura-body {
      display: flex;
      flex-direction: column;
      gap: 10px;
      min-height: 0;
      height: 100%;
      overflow: auto;
      align-items: stretch;
      justify-content: flex-start;
      padding: 6px;
    }

    .documento-lectura-body.pan-enabled {
      cursor: grab;
    }

    .documento-lectura-body.is-panning {
      cursor: grabbing;
      user-select: none;
    }

    .documento-lectura-toolbar {
      margin-left: auto;
    }

    .documento-lectura-zoom-area {
      display: inline-block;
      flex: 0 0 auto;
      margin: auto;
    }

    .documento-lectura-canvas-wrap {
      position: relative;
      display: inline-block;
      transform: scale(var(--documento-zoom, 1));
      transform-origin: top left;
    }

    .documento-lectura-canvas-wrap:focus,
    .documento-lectura-canvas-wrap:focus-visible {
      outline: none;
      box-shadow: none;
    }

    .documento-lectura-texto {
      white-space: pre-wrap;
      overflow: auto;
      flex: 1 1 auto;
      width: 100%;
      border: 1px solid var(--border);
      border-radius: 10px;
      padding: 14px;
      line-height: 1.6;
      box-sizing: border-box;
      background: var(--article-bg);
      color: var(--text);
    }

    .documento-lectura-iframe {
      width: 100%;
      min-height: 560px;
      height: 100%;
      border: 1px solid var(--border);
      border-radius: 10px;
      background: #fff;
      flex: 1 1 auto;
    }

    .preview-close-x {
      background: transparent;
      border: none;
      cursor: pointer;
      padding: 0;
      border-radius: 8px;
      width: 34px;
      height: 34px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: var(--danger-solid-bg);
      font-size: 20px;
      font-weight: 700;
      line-height: 1;
    }

    .preview-close-x:hover {
      background: var(--danger-solid-bg);
      color: #fff;
    }

    .preview-close-x:active {
      transform: translateY(1px);
    }

    body.oscuro .preview-close-x:hover {
      background: var(--danger-solid-bg);
      color: #fff;
    }

    .documento-preview-cerrar {
      min-width: 0;
      flex-shrink: 0;
    }

    .btn-preview-close,
    .documento-preview-cerrar {
      margin-left: auto;
    }

    .documentos-vacio {
      color: #6b7280;
      font-size: 14px;
      line-height: 1.5;
    }

    body.oscuro .documentos-vacio { color: #d1d5db; }

    .calendar-layout {
      width: min(98vw, var(--layout-max-width));
      margin: var(--section-gap) auto;
      padding: 0;
      box-sizing: border-box;
    }

    .calendar-panel {
      width: 100%;
      padding: var(--space-4) var(--space-5);
      border-radius: 14px;
      background: var(--card);
      border: 1px solid var(--border);
      box-shadow: var(--card-shadow-elevated);
      box-sizing: border-box;
      display: flex;
      flex-direction: column;
      gap: var(--space-2);
    }

    .calendar-head {
      display: flex;
      justify-content: space-between;
      align-items: flex-start;
      flex-wrap: wrap;
      gap: var(--space-2);
      margin-bottom: 2px;
    }

    .calendar-title {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }

    .calendar-title h3 {
      margin: 0;
      font-size: 20px;
      line-height: 1.25;
      color: var(--accent);
    }

    .calendar-title span {
      font-size: 14px;
      line-height: 1.45;
      color: #4b5563;
    }

    body.oscuro .calendar-title span {
      color: #e5e7eb;
    }

    .calendar-nav {
      display: grid;
      grid-template-columns: auto max-content auto;
      align-items: center;
      gap: 8px;
      width: fit-content;
      max-width: 100%;
      margin-left: auto;
      padding: 6px;
      border-radius: 10px;
      border: 1px solid color-mix(in srgb, var(--border) 95%, transparent);
      background: color-mix(in srgb, var(--card) 97%, var(--accent) 3%);
      box-sizing: border-box;
    }

    body.oscuro .calendar-nav {
      background: color-mix(in srgb, var(--card) 94%, var(--accent) 6%);
    }

    .calendar-btn {
      background: var(--accent);
      color: white;
      min-height: 32px;
      min-width: 88px;
      padding: 6px 11px;
      border-radius: 8px;
      border: none;
      font-weight: 700;
      font-size: 14px;
      cursor: pointer;
      transition: background 0.2s ease, transform 0.12s ease;
    }

    .calendar-btn:hover { background: var(--accent-light); }
    .calendar-btn:active { transform: translateY(1px); }

    .calendar-month {
      min-width: 0;
      text-align: center;
      font-size: 15px;
      font-weight: 700;
      letter-spacing: 0;
      color: var(--text);
      white-space: nowrap;
      padding: 0 4px;
    }

    @media (max-width: 640px) {
      .calendar-nav {
        grid-template-columns: 1fr 1fr;
        width: 100%;
      }

      .calendar-month {
        grid-column: 1 / -1;
        order: -1;
      }

      .calendar-btn {
        min-width: 0;
        width: 100%;
      }
    }

    .calendar-weekdays {
      display: grid;
      grid-template-columns: repeat(7, minmax(0, 1fr));
      gap: 8px;
      font-size: 13px;
      font-weight: 700;
      color: #475569;
      text-transform: uppercase;
    }

    body.oscuro .calendar-weekdays {
      color: #cbd5e1;
    }

    .calendar-weekday {
      text-align: center;
      padding: 6px;
    }

    .calendar-grid {
      display: grid;
      grid-template-columns: repeat(7, minmax(0, 1fr));
      gap: 8px;
    }

    .calendar-day {
      border: 1px solid var(--border);
      border-radius: 10px;
      padding: 8px;
      min-height: 108px;
      background: color-mix(in srgb, var(--card) 94%, white 6%);
      cursor: pointer;
      display: flex;
      flex-direction: column;
      gap: 6px;
    }

    .calendar-day:hover {
      border-color: var(--accent-light);
      box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.12);
    }

    .calendar-day:focus,
    .calendar-day:focus-visible {
      outline: none;
      box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.12);
    }

    .calendar-day--outside {
      opacity: 0.45;
      cursor: default;
    }

    .calendar-day--today {
      border-color: var(--accent-light);
    }

    .calendar-day-number {
      font-weight: 700;
      font-size: 14px;
    }

    .calendar-events {
      display: flex;
      flex-direction: column;
      gap: 4px;
      min-height: 0;
    }

    .calendar-event {
      display: grid;
      grid-template-columns: auto 1fr auto;
      grid-template-areas:
        "check . delete"
        "text text text";
      align-items: start;
      gap: 8px;
      padding: 8px 10px;
      border-radius: 8px;
      background: rgba(59, 130, 246, 0.12);
      font-size: 14px;
      color: var(--text);
      cursor: grab;
    }

    .calendar-event:active {
      cursor: grabbing;
    }

    .calendar-event.completed .calendar-event-text {
      text-decoration: line-through;
      opacity: 0.7;
    }

    .calendar-event-checkbox {
      grid-area: check;
      width: 17px;
      height: 17px;
      margin: 0;
      cursor: pointer;
    }

    .calendar-event-text {
      grid-area: text;
      border: none;
      background: transparent;
      color: inherit;
      font-size: 14px;
      line-height: 1.45;
      width: 100%;
      min-width: 0;
      padding: 0;
      min-height: 1.45em;
      display: block;
      box-sizing: border-box;
      outline: none;
      resize: none;
      overflow: hidden;
      white-space: pre-wrap;
      word-break: break-word;
      font-family: inherit;
    }

    .calendar-event-delete {
      grid-area: delete;
      justify-self: end;
      border: none;
      background: transparent;
      color: inherit;
      cursor: pointer;
      font-weight: 700;
      line-height: 1;
      padding: 0 2px;
      font-size: 14px;
    }

    .calendar-event-editor {
      display: flex;
      flex-direction: column;
      gap: 8px;
      padding: 2px 0 0;
      border: none;
      background: transparent;
      box-shadow: none;
    }

    .calendar-event-editor-input {
      width: 100%;
      border: 1px solid color-mix(in srgb, var(--border) 86%, transparent);
      border-radius: 10px;
      padding: 7px 10px;
      font-size: 13px;
      background: color-mix(in srgb, var(--card) 92%, transparent);
      color: var(--text);
      box-sizing: border-box;
    }

    .calendar-event-editor-input:focus {
      outline: none;
      border-color: var(--accent-light);
      box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.14);
    }

    .calendar-event-editor-actions {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 8px;
      width: 100%;
      align-items: stretch;
    }

    .calendar-event-editor-save,
    .calendar-event-editor-cancel,
    .class-editor .editor-save,
    .class-editor .editor-cancel,
    .carpetaGuardar,
    .carpetaCancelar {
      border: none;
      border-radius: 8px;
      padding: 7px 10px;
      font-family: "Segoe UI", Arial, sans-serif;
      font-size: 12px;
      font-weight: 700;
      line-height: 1.15;
      text-align: center;
      cursor: pointer;
      transition: filter 0.15s ease, transform 0.12s ease, background-color 0.15s ease;
    }

    .calendar-event-editor-save,
    .calendar-event-editor-cancel {
      width: 100%;
    }

    .calendar-event-editor-save {
      background: var(--accent);
      color: #fff;
    }

    .calendar-event-editor-cancel {
      background: var(--danger-solid-bg);
      color: var(--danger-solid-text);
    }

    .calendar-event-editor-save:hover,
    .calendar-event-editor-cancel:hover {
      filter: brightness(0.95);
    }

    .calendar-event-editor-save:active,
    .calendar-event-editor-cancel:active {
      transform: translateY(1px);
    }

    @media (max-width: 900px) {
      .calendar-grid {
        gap: 6px;
      }

      .calendar-day {
        min-height: 94px;
      }

      .calendar-month {
        min-width: 150px;
      }
    }


    .grade-layout {
      width: min(98vw, var(--layout-max-width));
      margin: var(--section-gap) auto;
      padding: 0;
      box-sizing: border-box;
    }

    .grade-panel {
      width: 100%;
      padding: var(--space-4) var(--space-5);
      border-radius: 14px;
      background: var(--card);
      border: 1px solid var(--border);
      box-shadow: var(--card-shadow-elevated);
      box-sizing: border-box;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }


    .grade-subjects-layout {
      display: grid;
      grid-template-columns: minmax(220px, 0.86fr) minmax(0, 2.14fr);
      gap: 12px;
      align-items: start;
    }

    .grade-subjects-panel,
    .grade-editor-panel {
      border: none;
      border-radius: 12px;
      padding: 12px;
      background: color-mix(in srgb, var(--card) 99.85%, transparent);
    }

    .grade-subjects-panel {
      overflow: hidden;
    }

    .grade-subjects-create {
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 6px;
      margin-bottom: 8px;
    }

    .grade-subject-name-input,
    .grade-selected-name {
      width: 100%;
      padding: 8px 10px;
      border-radius: 10px;
      border: 1px solid color-mix(in srgb, var(--border) 60%, transparent);
      background: var(--grade-input-bg);
      color: var(--text);
      font-weight: 600;
      box-sizing: border-box;
    }

    .grade-subject-name-input::placeholder,
    .grade-selected-name::placeholder {
      color: var(--grade-placeholder);
      opacity: 1;
      font-weight: 600;
    }

    .grade-subjects-hint {
      font-size: 12px;
      color: var(--grade-muted-text);
      margin-bottom: 6px;
    }

    .grade-subjects-list {
      display: flex;
      flex-direction: column;
      gap: 6px;
      max-height: none;
      overflow: hidden;
      padding-right: 0;
    }

    .grade-subject-item {
      border: none;
      border-left: 8px solid var(--accent);
      border-radius: 10px;
      background: var(--article-bg);
      color: var(--text);
      text-align: left;
      padding: 12px;
      display: flex;
      flex-direction: column;
      gap: 2px;
      cursor: pointer;
      transition: 0.15s ease;
      font-size: 13px;
      line-height: 1.25;
      box-shadow: none;
    }

    .grade-subject-item:hover {
      transform: translateY(-1px);
    }

    .grade-subject-item:active {
      transform: translateY(1px);
    }

    .grade-subject-item.arrastrando {
      opacity: 0.9;
      transform: translateY(-1px);
    }

    .grade-subject-item:focus,
    .grade-subject-item:focus-visible {
      outline: none;
      box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.18);
    }

    .grade-subject-item strong {
      font-size: 13px;
      line-height: 1.25;
      font-weight: 700;
    }

    .grade-subject-item span {
      font-size: 12px;
      color: var(--grade-muted-text);
    }

    .grade-subject-item small {
      font-size: 11px;
      color: var(--grade-muted-text);
    }

    .grade-subject-item.is-active {
      background: var(--accent);
      color: #fff;
      box-shadow: none;
    }

    .grade-subject-item.is-active span,
    .grade-subject-item.is-active small {
      color: rgba(255, 255, 255, 0.9);
    }

    .grade-editor-head {
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 6px;
      margin-bottom: 6px;
    }

    .grade-editor-section {
      border-top: 0;
      padding-top: 0;
      margin-top: 0;
      display: flex;
      flex-direction: column;
      gap: 6px;
    }

    .grade-editor-section + .grade-editor-section {
      padding-top: 6px;
      margin-top: 6px;
    }

    .grade-danger-btn {
      border: 1px solid var(--danger-solid-border);
      background: var(--danger-solid-bg);
      color: var(--danger-solid-text);
      border-radius: 10px;
      padding: 10px 12px;
      font-size: 12px;
      font-weight: 700;
      cursor: pointer;
    }

    .grade-danger-btn:hover {
      background: var(--danger-solid-hover);
      border-color: var(--danger-solid-hover);
    }

    .grade-editor-panel.is-disabled {
      opacity: 0.8;
    }

    .grade-head {
      display: flex;
      flex-direction: column;
      gap: var(--space-3);
      margin-bottom: 2px;
    }

    .calendar-title,
    .grade-title,
    .media-title {
      display: flex;
      flex-direction: column;
      gap: 6px;
      align-items: flex-start;
      margin: 0;
      max-width: 780px;
    }

    .calendar-title h3,
    .grade-title h3,
    .media-title h3 {
      margin: 0;
      color: var(--accent);
      font-size: 20px;
      line-height: 1.25;
    }

    .calendar-title span,
    .grade-title span,
    .media-title span {
      font-size: 14px;
      line-height: 1.45;
      color: var(--grade-subtle-text);
      margin: 0;
    }

    .grade-config-grid {
      display: grid;
      grid-template-columns: repeat(6, minmax(0, 1fr));
      gap: 8px;
      align-items: end;
    }

    .grade-config-grid > * {
      min-width: 0;
    }

    .grade-field {
      display: flex;
      flex-direction: column;
      gap: 4px;
      font-size: 11px;
      color: var(--grade-subtle-text);
      font-weight: 700;
      min-width: 0;
    }

    .grade-field span {
      min-height: 22px;
      line-height: 1.2;
      display: flex;
      align-items: flex-end;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }

    .grade-field input,
    .grade-control-input {
      width: 100%;
      padding: 7px 9px;
      border-radius: 10px;
      border: 1px solid color-mix(in srgb, var(--border) 58%, transparent);
      background: var(--grade-input-bg);
      color: var(--text);
      font-weight: 600;
      box-sizing: border-box;
    }

    .grade-field input:focus,
    .grade-control-input:focus {
      outline: none;
      border-color: var(--accent-light);
      box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.18);
    }

    .grade-panel input[type="number"]::-webkit-outer-spin-button,
    .grade-panel input[type="number"]::-webkit-inner-spin-button {
      -webkit-appearance: none;
      margin: 0;
    }

    .grade-panel input[type="number"] {
      -moz-appearance: textfield;
      appearance: textfield;
    }

    .grade-btn,
    .grade-control-remove {
      background: var(--accent);
      color: white;
      border: none;
      border-radius: 10px;
      padding: 7px 10px;
      font-weight: 700;
      cursor: pointer;
      transition: background 0.2s ease, transform 0.12s ease;
    }

    .grade-btn:hover,
    .grade-control-remove:hover { background: var(--accent-light); }

    .grade-btn:active,
    .grade-control-remove:active { transform: translateY(1px); }

    .grade-controls {
      display: flex;
      flex-direction: column;
      gap: 0;
      border: 1px solid color-mix(in srgb, var(--border) 52%, transparent);
      border-radius: 12px;
      background: var(--grade-row-bg);
      overflow: hidden;
    }

    .grade-control-row {
      display: grid;
      grid-template-columns: minmax(82px, 110px) minmax(150px, 1fr) minmax(150px, 1fr) auto;
      gap: 8px;
      align-items: center;
      padding: 8px;
      background: transparent;
      border: 0;
      border-radius: 0;
    }


    .grade-control-title {
      font-size: 13px;
      font-weight: 700;
      color: var(--grade-muted-text);
    }

    .grade-validation {
      font-size: 13px;
      color: #dc2626;
      min-height: 0;
      line-height: 1.4;
    }

    .grade-validation:empty { display: none; }

    .grade-panel.has-errors {
      border-color: var(--border);
    }

    .grade-results-section {
      background: transparent;
      border-radius: 10px;
      padding: 0;
      border: none;
    }

    .grade-summary-details {
      margin-top: 0;
    }

    .grade-summary-details summary {
      list-style: none;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 8px;
      font-size: 14px;
      font-weight: 700;
      color: var(--text);
      min-height: 40px;
      padding: 8px 10px;
      user-select: none;
      border-radius: 10px;
      border: 1px solid color-mix(in srgb, var(--border) 60%, transparent);
      background: var(--card);
    }

    .grade-summary-details summary::-webkit-details-marker {
      display: none;
    }

    .grade-summary-details summary::after {
      content: "▾";
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 22px;
      height: 22px;
      font-size: 17px;
      line-height: 1;
      color: var(--grade-summary-icon);
      transition: transform 0.2s ease;
    }

    .grade-summary-details:not([open]) summary::after {
      transform: rotate(-90deg);
    }

    .grade-summary-details .grade-results {
      margin-top: 6px;
      border: 1px solid color-mix(in srgb, var(--border) 40%, transparent);
      border-radius: 10px;
      padding: 6px 8px;
      background: color-mix(in srgb, var(--card) 99.7%, transparent);
    }

    .grade-results {
      display: flex;
      flex-direction: column;
      gap: 4px;
    }

    .grade-result-row {
      display: grid;
      grid-template-columns: 1fr auto;
      align-items: center;
      gap: 8px;
      border-bottom: none;
      padding: 4px 0;
    }

    .grade-result-row:last-child {
      border-bottom: none;
      padding-bottom: 0;
    }

    .grade-result-row span {
      font-size: 12px;
      color: var(--grade-muted-text);
      line-height: 1.35;
    }

    .grade-result-row strong {
      font-size: 13px;
      color: var(--text);
      line-height: 1.3;
      text-align: right;
    }

    @media (max-width: 1200px) {
      .grade-config-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
      }
    }

    @media (max-width: 820px) {
      .grade-config-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }
    }

    @media (max-width: 560px) {
      .grade-config-grid {
        grid-template-columns: 1fr;
      }

      .grade-field span {
        white-space: normal;
        overflow: visible;
        text-overflow: clip;
      }
    }

    @media (max-width: 980px) {
      .grade-subjects-layout {
        grid-template-columns: 1fr;
      }

      .grade-subjects-list {
        max-height: 280px;
      }
    }

    @media (max-width: 820px) {
      .grade-control-row,
      .grade-editor-head,
      .grade-subjects-create {
        grid-template-columns: 1fr;
      }

      .grade-control-remove,
      .grade-danger-btn {
        width: 100%;
      }
    }

    .media-layout {
      width: min(98vw, var(--layout-max-width));
      margin: var(--section-gap) auto;
      padding: 0;
      box-sizing: border-box;
    }

    .media-panel {
      margin: 0;
      width: 100%;
      padding: var(--space-4) var(--space-5);
      border-radius: 14px;
      background: var(--card);
      border: 1px solid var(--border);
      box-shadow: var(--card-shadow-elevated);
      box-sizing: border-box;
      display: flex;
      flex-direction: column;
      gap: var(--space-3);
    }

    .media-panel.is-empty {
      padding-bottom: 16px;
      gap: 10px;
    }

    .media-panel.is-empty .media-grid {
      display: none;
    }

    .media-head {
      display: flex;
      flex-direction: column;
      gap: var(--space-3);
      margin-bottom: 2px;
    }

    .media-actions {
      display: flex;
      gap: var(--space-3);
      flex-wrap: wrap;
    }

    .media-input {
      flex: 1;
      min-width: 220px;
      padding: 10px 12px;
      border-radius: 10px;
      border: 1px solid var(--border);
      background: var(--card);
      color: var(--text);
      font-weight: 600;
      box-sizing: border-box;
    }

    .media-input:focus {
      outline: none;
      border-color: var(--accent-light);
      box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.18);
    }

    .media-btn {
      background: var(--accent);
      color: white;
      padding: 10px 16px;
      border-radius: 10px;
      border: none;
      font-weight: 700;
      cursor: pointer;
      transition: background 0.2s ease, transform 0.12s ease;
    }

    .media-btn:hover { background: var(--accent-light); }
    .media-btn:active { transform: translateY(1px); }

    .media-error {
      font-size: 13px;
      color: #dc2626;
      min-height: 0;
      line-height: 1.35;
      margin: 0;
    }

    .media-error:empty {
      display: none;
    }

    body.oscuro .media-error {
      color: #f87171;
    }

    .media-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
      gap: var(--space-3);
    }

    .media-card {
      border-radius: 14px;
      background: var(--card);
      border: 1px solid var(--border);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      box-shadow: inset 0 1px 0 rgba(255,255,255,0.04);
    }

    .media-card iframe {
      width: 100%;
      aspect-ratio: 16 / 9;
      border: none;
      display: block;
    }

    .media-card-actions {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 10px 12px;
      gap: var(--space-3);
      flex-wrap: wrap;
    }

    .media-link {
      color: var(--accent);
      font-weight: 700;
      text-decoration: none;
      font-size: 13px;
    }

    .media-link:hover {
      text-decoration: underline;
    }

    .media-remove {
      background: var(--danger-solid-bg);
      color: var(--danger-solid-text);
      border: 1px solid var(--danger-solid-border);
      padding: 6px 11px;
      border-radius: 10px;
      cursor: pointer;
      font-weight: 700;
      font-size: 12px;
      transition: background 0.2s ease, border-color 0.2s ease;
    }

    .media-remove:hover {
      background: var(--danger-solid-hover);
      border-color: var(--danger-solid-hover);
    }

    .documento-iframe {
      width: 100%;
      height: clamp(360px, 60vh, 720px);
      border: 1px solid var(--border);
      border-radius: 10px;
      background: var(--article-bg);
    }

    .documento-texto {
      white-space: pre-wrap;
      line-height: 1.6;
      font-size: 14px;
      color: var(--text);
      padding: 14px;
      border-radius: 10px;
      border: 1px solid var(--border);
      background: var(--article-bg);
      max-height: clamp(360px, 60vh, 760px);
      overflow-y: auto;
    }


    .documento-alerta {
      padding: 14px;
      border-radius: 10px;
      background: rgba(220, 38, 38, 0.08);
      border: 1px solid rgba(220, 38, 38, 0.18);
      color: #991b1b;
      font-weight: 700;
    }

    @media (max-width: 900px) {
      .documentos-body {
        grid-template-columns: 1fr;
      }

      .documento-iframe,
      .documento-texto {
        height: clamp(320px, 56vh, 640px);
        max-height: 680px;
      }
    }

    .buscador-flotante {
      position: relative;
      display: none;
      align-items: center;
      gap: 12px;
      padding: 14px 16px;
      background: linear-gradient(120deg, rgba(30, 58, 138, 0.06), rgba(30, 58, 138, 0.02));
      border: 1px solid var(--border);
      border-radius: 12px;
      box-shadow: 0 10px 28px rgba(0,0,0,0.12);
      z-index: 20;
      width: 100%;
      margin-top: 14px;
      justify-content: flex-start;
      flex-wrap: wrap;
      box-sizing: border-box;
    }

    .buscador-flotante.activo {
      display: flex;
    }

    .buscador-campo {
      flex: 1 1 320px;
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 12px 14px;
      background: var(--card);
      border-radius: 12px;
      border: 2px solid var(--border);
      box-shadow: inset 0 1px 0 rgba(255,255,255,0.08);
      box-sizing: border-box;
    }

    .buscador-icon {
      width: 18px;
      height: 18px;
      color: var(--accent);
      flex-shrink: 0;
    }

    .buscador-input {
      min-width: 220px;
      flex: 1 1 auto;
      padding: 4px 0 4px 6px;
      border-radius: 8px;
      border: none;
      background: transparent;
      color: var(--text);
      font-size: 15px;
      caret-color: var(--accent);
    }

    .buscador-input::placeholder {
      color: rgba(17, 24, 39, 0.55);
    }

    body.oscuro .buscador-input::placeholder {
      color: rgba(229, 231, 235, 0.7);
    }

    .buscador-input:focus {
      outline: none;
      box-shadow: none;
    }

    .buscador-info {
      font-size: 13px;
      color: #4b5563;
      white-space: nowrap;
      padding: 0 4px;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 10px 12px;
      border-radius: 10px;
      background: rgba(30, 58, 138, 0.06);
      border: 1px solid rgba(30, 58, 138, 0.12);
      font-weight: 600;
    }

    body.oscuro .buscador-info {
      color: #e5e7eb;
      background: rgba(96, 165, 250, 0.12);
      border-color: rgba(96, 165, 250, 0.22);
    }

    .buscador-cerrar {
      background: rgba(239, 68, 68, 0.08);
      border: 1px solid rgba(239, 68, 68, 0.35);
      color: var(--danger-solid-bg);
      cursor: pointer;
      font-size: 16px;
      padding: 10px 12px;
      border-radius: 10px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease, transform 0.12s ease;
    }

    body.oscuro .buscador-cerrar {
      background: rgba(239, 68, 68, 0.2);
      border-color: rgba(248, 113, 113, 0.55);
      color: #fca5a5;
    }

    .buscador-cerrar:hover,
    .buscador-cerrar:focus-visible {
      background: var(--danger-solid-bg);
      border-color: var(--danger-solid-bg);
      color: #fff;
    }

    body.oscuro .buscador-cerrar:hover,
    body.oscuro .buscador-cerrar:focus-visible {
      background: var(--danger-solid-bg);
      border-color: var(--danger-solid-bg);
      color: #fff;
    }

    .buscador-cerrar:active {
      transform: translateY(1px);
    }

    #numeroArticulo::-webkit-outer-spin-button,
    #numeroArticulo::-webkit-inner-spin-button,
    .editor-absences::-webkit-outer-spin-button,
    .editor-absences::-webkit-inner-spin-button {
      -webkit-appearance: none;
      margin: 0;
    }

    #numeroArticulo,
    .editor-absences {
      -mozappearance: textfield;
    }

    .resaltado-busqueda {
      outline: 2px solid var(--search-highlight-outline);
      box-shadow: 0 0 0 4px var(--search-highlight-glow);
    }

    .resaltado-busqueda-activo {
      outline: 3px solid var(--search-highlight-outline-active);
      box-shadow: 0 0 0 5px var(--search-highlight-glow-active);
    }

    .resaltado-busqueda-marca {
      background: var(--search-highlight-mark);
      color: inherit;
      padding: 0;
      border-radius: 2px;
      box-shadow: 0 0 0 1px var(--search-highlight-outline);
      letter-spacing: normal;
      white-space: pre-wrap;
    }

    .resaltado-busqueda-marca-activa {
      background: var(--search-highlight-mark-active);
      color: inherit;
      box-shadow: 0 0 0 1px var(--search-highlight-outline-active);
    }

    ::selection {
      background: var(--selection-bg);
      color: inherit;
    }

    .articulo-contenido,
    .nota-box,
    .articulo-titulo-texto {
      cursor: text;
      caret-color: var(--focus-contrast) !important;
    }

    @keyframes fadeIn {
      from { opacity: 0; transform: translateY(-2px); }
      to { opacity: 1; transform: translateY(0); }
    }

.layout {
  display: flex;
  align-items: stretch;
  gap: var(--space-4);
  height: 100%;
  min-height: var(--panel-min-height);
}

.sidebarMaterias {
  width: 270px;
  background: transparent;
  padding: var(--space-3) 0;
  border-radius: 14px;
  box-shadow: none;
  overflow-y: auto;
  border: none;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-self: stretch;
  min-height: var(--panel-min-height);
  height: auto;
  overflow: auto;
}


.sidebarAcciones {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
  padding: 0;
  border: none;
  border-radius: 12px;
  background: transparent;
}

.sidebarAccionesTitulo {
  font-weight: 700;
  font-size: 15px;
  color: var(--accent);
  text-align: center;
}

.btn-carpeta {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 12px;
  padding: 12px 14px;
  font-weight: 700;
  cursor: pointer;
  font-size: 14px;
  transition: background 0.2s ease, transform 0.12s ease;
  width: 100%;
}

.btn-carpeta:hover { background: var(--accent-light); }
.btn-carpeta:active { transform: translateY(1px); }

.carpetasSection {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 0;
}

.carpetasLista {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.carpetasLista > .carpetaGrupoSemestre .carpetaBox:first-child {
  margin-top: 34px;
}

.carpetaGrupoSemestre {
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
}

.sidebarGroup {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.sidebarGroupDocumentos {
  margin-top: var(--space-3);
}

.sidebarGroupNormativa {
  margin-top: var(--space-3);
}

.carpetaBox {
  --carpeta-slot-height: 0px;
  --carpeta-color: var(--accent);
  position: relative;
  border: 1px solid color-mix(in srgb, var(--border) 45%, transparent);
  border-radius: 12px;
  padding: 10px 12px;
  background: var(--card);
  box-shadow: none;
  margin-top: var(--space-3);
}

.carpetaBox.carpeta-apilada {
  margin-top: 0;
  border-top: none;
  border-top-left-radius: 0;
  border-top-right-radius: 0;
}

.carpetaGrupoSemestre .carpetaBox:not(:last-child) {
  border-bottom-left-radius: 0;
  border-bottom-right-radius: 0;
}

.carpetaBox.is-dragging { opacity: 0.72; }

.carpetaBox.is-drag-over {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
  background: color-mix(in srgb, var(--card) 94%, var(--accent) 6%);
}

.carpetaSemestreAleta {
  position: absolute;
  top: -32px;
  left: 50%;
  transform: translateX(-50%);
  min-width: 120px;
  max-width: calc(100% - 24px);
  padding: 5px 12px;
  border: 1px solid color-mix(in srgb, var(--border) 50%, transparent);
  border-bottom: none;
  border-radius: 12px 12px 0 0;
  background: color-mix(in srgb, var(--card) 96%, transparent);
  box-sizing: border-box;
  text-align: center;
  box-shadow: none;
  margin-bottom: 0;
}

.carpetaSemestreTexto {
  margin: 0;
  font-size: 11px;
  font-weight: 800;
  text-transform: none;
  letter-spacing: 0.02em;
  color: var(--accent);
  outline: none;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.carpetaSemestreTexto:focus {
  box-shadow: none;
}

.carpetaBox.carpeta-editor {
  margin-top: 0;
  border-style: dashed;
  background: var(--article-bg);
}

.carpetaHeader {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: 6px;
  cursor: grab;
}

.carpetaHeader:active {
  cursor: grabbing;
}

.carpetaTituloWrap {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
  min-width: 0;
}

.carpetaToggle {
  border: none;
  background: transparent;
  color: #64748b;
  border-radius: 10px;
  width: 36px;
  height: 36px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.18s ease, transform 0.12s ease, color 0.18s ease;
}

.carpetaToggle:hover {
  background: rgba(59, 130, 246, 0.08);
}

.carpetaToggle:active {
  transform: translateY(1px);
}

.carpetaToggleIcon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  font-size: 17px;
  line-height: 1;
  transform-origin: center;
  transition: transform 0.2s ease;
}

.carpetaToggle.colapsada .carpetaToggleIcon {
  transform: rotate(-90deg);
}

body.oscuro .carpetaToggle {
  color: #94a3b8;
}


.carpetaNombre {
  color: var(--carpeta-color);
  font-weight: 700;
  font-size: 15px;
  cursor: text;
  text-align: left;
  flex: 1;
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.carpetaNombre[contenteditable="true"] {
  outline: none;
  background: transparent;
}

.carpetaNombre[contenteditable="true"]::selection {
  color: inherit;
  background: transparent;
}

.carpetaNombreInput {
  flex: 1;
  min-width: 0;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 10px;
  font-size: 14px;
  font-weight: 600;
  background: var(--card);
  color: var(--text);
  box-sizing: border-box;
}

.carpetaActions {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.carpeta-color-input {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: 1px solid var(--border);
  padding: 0;
  cursor: pointer;
  background: none;
  appearance: none;
  -webkit-appearance: none;
}

.carpeta-color-input:focus,
.carpeta-color-input:focus-visible {
  outline: none;
  box-shadow: none;
}

.carpeta-color-input::-webkit-color-swatch-wrapper {
  padding: 3px;
  border-radius: 50%;
}

.carpeta-color-input::-webkit-color-swatch {
  border: none;
  border-radius: 50%;
}

.carpetaGuardar,
.carpetaCancelar,
.carpetaEliminar {
  border: none;
  border-radius: 8px;
  padding: 7px 10px;
  font-family: "Segoe UI", Arial, sans-serif;
  font-size: 12px;
  font-weight: 700;
  line-height: 1.15;
  cursor: pointer;
  transition: background 0.15s ease, transform 0.12s ease, filter 0.15s ease;
}

.carpetaGuardar {
  background: var(--accent);
  color: #fff;
}

.carpetaCancelar {
  background: var(--danger-solid-bg);
  color: var(--danger-solid-text);
}

.carpetaEliminar {
  background: var(--danger-solid-bg);
  color: var(--danger-solid-text);
}

.carpetaGuardar:hover,
.carpetaCancelar:hover,
.carpetaEliminar:hover {
  filter: brightness(0.95);
}

.carpetaGuardar:active,
.carpetaCancelar:active,
.carpetaEliminar:active { transform: translateY(1px); }


.carpetaLista {
  gap: var(--space-2);
  padding: var(--space-2);
  border-radius: 10px;
  border: 1px dashed transparent;
  background: var(--article-bg);
  align-items: stretch;
  box-shadow: inset 0 0 0 1px transparent;
  min-height: var(--carpeta-slot-height);
}

.carpetaBox.carpeta-colapsada .carpetaLista {
  display: none;
}

.carpetaBox.carpeta-colapsada .carpetaDocumentos,
.carpetaBox.carpeta-colapsada .carpetaDocumentosTitulo {
  display: none;
}

.carpetaDocumentosTitulo {
  font-weight: 700;
  font-size: 13px;
  color: var(--accent);
  margin: 8px 4px 4px;
}

.carpetaDocumentos {
  border: 1px dashed transparent;
  border-radius: 10px;
  padding: var(--space-2);
  background: var(--article-bg);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  min-height: var(--carpeta-slot-height);
  transition: border-color 0.15s ease, background 0.15s ease, box-shadow 0.15s ease;
}

.carpetaDocumentos.is-empty {
  background: transparent;
  border-color: transparent;
  padding: 0;
}

.carpetaDocumentos.drop-activa {
  box-shadow: inset 0 0 0 2px var(--accent);
  border-radius: 10px;
}

.carpetaDocumentosVacio {
  font-size: 13px;
  color: var(--muted-text);
  padding: 6px 0;
  min-height: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: transparent;
}

.carpetaDocumentosLista {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  width: 100%;
  align-items: stretch;
}


.carpetaDocumentoChip {
  display: flex;
  width: 100%;
  box-sizing: border-box;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  background: var(--article-bg);
  border: 1px solid color-mix(in srgb, var(--border) 55%, transparent);
  border-radius: 10px;
  padding: 10px 12px;
  cursor: grab;
}

.carpetaDocumentoChip.is-selected {
  border-color: #3b82f6;
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

.carpetaDocumentoChip:active {
  cursor: grabbing;
}

.carpetaDocumentoDetalle {
  font-weight: 600;
  color: var(--text);
  word-break: break-word;
  max-width: 100%;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}


.documento-arrastrando {
  opacity: 0.9;
  transform: translateY(-1px);
}

.carpetaLista-drop {
  box-shadow: inset 0 0 0 2px var(--accent);
  background: rgba(59, 130, 246, 0.08);
}


.carpetaVacia {
  font-size: 13px;
  color: var(--muted-text);
  padding: 6px 0;
  width: 100%;
  min-height: var(--carpeta-slot-height);
  display: flex;
  align-items: center;
  justify-content: center;
  align-self: stretch;
  text-align: center;
}

.sidebarItemCarpeta {
  background: var(--article-bg);
  min-height: var(--carpeta-slot-height);
  display: flex;
  align-items: center;
  color: var(--text);
}

.sidebarDocumentosLista {
  border: 1px dashed transparent;
  background: transparent;
  transition: box-shadow 0.15s ease, background 0.15s ease;
}

.sidebarDocumentosLista .carpetaVacia {
  display: grid;
  place-items: center;
  width: 100%;
  text-align: center;
}

.sidebarDocumentosLista.drop-activa {
  box-shadow: inset 0 0 0 2px var(--accent);
  background: rgba(59, 130, 246, 0.08);
}

.sidebarItemDocumento {
  cursor: pointer;
  border-left-color: #10b981;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  padding-block: 9px;
  transform: none;
  contain: none;
  backface-visibility: hidden;
  text-rendering: geometricPrecision;
  -webkit-font-smoothing: antialiased;
}

.sidebarItemDocumento:hover,
.sidebarItemDocumento:active {
  transform: none;
}

.sidebarItemDocumentoNombre {
  max-width: 100%;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.sidebarItemDocumentoTipo {
  font-size: 11px;
  color: var(--muted-text);
  letter-spacing: 0.03em;
}

.sidebarItemDocumento.is-selected {
  background: var(--accent);
  color: #fff;
}

.sidebarItemDocumento.is-selected .sidebarItemDocumentoTipo {
  color: rgba(255, 255, 255, 0.9);
}

.sidebarGroupTitle {
  font-family: "Poppins", "Segoe UI", sans-serif;
  font-weight: 700;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin: 0 4px;
  line-height: 1.2;
  color: var(--accent);
}

      .sidebarItem {
        padding: 10px 10px;
        margin-bottom: 0;
        border-radius: 10px;
        cursor: grab;
        font-weight: 600;
        background: var(--article-bg);
        border: 1px solid color-mix(in srgb, var(--border) 75%, transparent);
        border-left: 8px solid var(--accent);
        color: var(--text);
        contain: paint;
        transform: translateY(0);
        transition: transform 0.15s ease;
        font-size: 13px;
        line-height: 1.25;
  }

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 14px;
  z-index: 999;
}

.modal-backdrop.visible { display: flex; }


.modal-card {
  --modal-gap: 10px;
  background: var(--card);
  color: var(--text);
  border-radius: 12px;
  padding: 14px 16px 16px;
  width: min(320px, 90vw);
  box-shadow: 0 16px 32px rgba(0,0,0,0.22);
  border: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: var(--modal-gap);
}


.modal-card.documento-lectura-card {
  width: min(1200px, 96vw);
  max-width: min(1200px, 96vw);
  max-height: min(92vh, 1000px);
}

.modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 0;
}

.modal-head h3 {
  margin: 0;
  font-size: 18px;
  line-height: 1.35;
}

.modal-close {
  background: rgba(239, 68, 68, 0.08);
  border: 1px solid rgba(239, 68, 68, 0.35);
  color: var(--danger-solid-bg);
  font-size: 14px;
  cursor: pointer;
  border-radius: 8px;
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.modal-close:hover {
  background: var(--danger-solid-bg);
  border-color: var(--danger-solid-bg);
  color: #fff;
}
.modal-close:active { transform: translateY(1px); }

body.oscuro .modal-close {
  background: rgba(248, 113, 113, 0.12);
  border-color: rgba(248, 113, 113, 0.4);
  color: #f87171;
}

body.oscuro .modal-close:hover {
  background: var(--danger-solid-bg);
  border-color: var(--danger-solid-bg);
  color: #fff;
}


#modalConfiguracion .modal-close,
#mallaPreviewClose.modal-close,
#documentoLecturaClose.modal-close {
  background: transparent;
  border: none;
  color: var(--danger-solid-bg);
  cursor: pointer;
  padding: 0;
  border-radius: 8px;
  width: 34px;
  height: 34px;
  min-width: 34px;
  min-height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
  line-height: 1;
  font-family: "Segoe UI Symbol", "Apple Color Emoji", "Noto Sans Symbols 2", "Poppins", sans-serif;
  transition: background 0.15s ease, color 0.15s ease;
}

#modalConfiguracion .modal-close:hover,
#mallaPreviewClose.modal-close:hover,
#documentoLecturaClose.modal-close:hover {
  background: var(--danger-solid-bg);
  color: #fff;
}

#modalConfiguracion .modal-close:active,
#mallaPreviewClose.modal-close:active,
#documentoLecturaClose.modal-close:active {
  transform: translateY(1px);
}

body.oscuro #modalConfiguracion .modal-close:hover,
body.oscuro #mallaPreviewClose.modal-close:hover,
body.oscuro #documentoLecturaClose.modal-close:hover {
  background: var(--danger-solid-bg);
  color: #fff;
}

.modal-body {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 0;
}

.modal-card label {
  font-weight: 700;
  font-size: 12.5px;
  letter-spacing: 0.01em;
  margin: 0 0 2px;
}

.modal-card input {
  width: 100%;
  margin-top: 0;
  padding: 9px 11px;
  border-radius: 9px;
  border: 1px solid var(--border);
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  padding: 0;
  margin-top: 8px;
}

.modal-actions .btn-primary {
  width: 100%;
  padding: 10px 12px;
  font-weight: 700;
  font-size: 13px;
  border-radius: 8px;
  margin-top: 0;
}

.config-card {
  width: min(520px, 92vw);
  max-height: min(84vh, 720px);
}

.configuracion-body {
  gap: 14px;
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  padding-right: 4px;
}

.config-section {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--article-bg);
}

.config-section-head h4 {
  margin: 0;
  font-size: 15px;
}

.config-section-head p {
  margin: 2px 0 0;
  color: var(--muted-text);
  font-size: 13px;
}

.config-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.config-options {
  display: grid;
  gap: 8px;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
}

.config-option {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  column-gap: 8px;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--card);
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}

.config-option span {
  order: 0;
  text-align: left;
}

.config-option input {
  accent-color: var(--accent);
  order: 1;
  justify-self: end;
}

.config-option-color input[type="color"] {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: 1px solid var(--border);
  padding: 0;
  cursor: pointer;
  background: none;
  appearance: none;
  -webkit-appearance: none;
}

.config-option-color input[type="color"]::-webkit-color-swatch-wrapper {
  padding: 3px;
  border-radius: 50%;
}

.config-option-color input[type="color"]::-webkit-color-swatch {
  border: none;
  border-radius: 50%;
}

.config-range {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 13px;
  color: var(--muted-text);
}

.config-range label {
  font-weight: 600;
  color: var(--text);
}

.config-range input[type="range"] {
  width: 100%;
}

.config-action {
  width: 100%;
  justify-content: center;
}

@media (min-width: 540px) {
  .config-action {
    width: auto;
  }
}
    .sidebarItem:not(.sidebarItemDocumento):hover {
      transform: translateY(-1px);
    }

    .sidebarItem.activa {
      background: var(--accent);
      color: white;
    }

    .sidebarItem:active {
      cursor: grabbing;
    }

    .sidebarItem:not(.sidebarItemDocumento).arrastrando {
      opacity: 0.9;
      transform: translateY(-1px);
    }

.sidebarGroupList {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 2px 0;
  min-height: 34px;
  border-radius: 10px;
  overflow: clip;
}

.sidebarGroupList.carpetaLista {
  padding: var(--space-2);
  min-height: 34px;
}

.sidebarGroupList.drop-activa {
  background: rgba(59, 130, 246, 0.06);
  box-shadow: inset 0 0 0 2px var(--accent);
}

    .mainPanel {
      flex: 1;
      display: flex;
      flex-direction: column;
      gap: var(--space-3);
      align-self: stretch;
      min-height: 100%;
      height: 100%;
      min-height: 0;
    }

.form-articulo {
  background: transparent;
  padding: var(--space-4);
  border-radius: 12px;
  border: none;
  box-shadow: none;
}
    
.form-articulo h2 {
  margin-top: 0;
}

   .form-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  align-items: end;
}
    .contenidoArticulos {
      margin-top: 12px;
      padding: 0 var(--space-4);
      flex: 1 0 auto;
      display: flex;
      flex-direction: column;
      gap: 10px;
      box-sizing: border-box;
    }

    .estado-vacio {
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 10px;
      padding: 48px 24px;
      text-align: center;
      color: var(--muted-foreground);
    }

    .estado-vacio h2 {
      margin: 0;
      font-weight: 600;
      color: var(--foreground);
    }

    .estado-vacio p {
      margin: 0;
      color: var(--muted-foreground);
    }

    .materia-wrap {
      margin-top: 2px;
      margin-bottom: 6px;
      display: grid;
      grid-template-columns: minmax(0, 1fr) auto;
      align-items: end;
      gap: 12px;
    }

    .materia-controls {
      display: grid;
      grid-template-columns: minmax(170px, 240px) auto 32px 32px auto;
      align-items: center;
      justify-content: end;
      gap: 8px;
    }

    .materia-carpeta-select {
      width: 100%;
      height: 32px;
      border-radius: 8px;
      border: 1px solid var(--border);
      background: var(--card);
      color: var(--text);
      font-size: 13px;
      font-weight: 600;
      padding: 0 10px;
      box-sizing: border-box;
    }

    .materia-carpeta-select:focus,
    .materia-carpeta-select:focus-visible {
      outline: none;
      border-color: var(--accent-light);
      box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.18);
    }

    .materia-controls .btn-secondary,
    .materia-controls .btn-small {
      height: 32px;
      padding: 0 12px;
      white-space: nowrap;
      margin: 0;
    }

    .materia-controls .btn-preview-close {
      margin-left: 0;
    }

    .materia-controls .preview-close-x {
      width: 32px;
      height: 32px;
    }

    .materia-mover-btn {
      min-width: 84px;
    }

    .materia-mover-btn:disabled {
      opacity: 0.6;
      cursor: not-allowed;
    }

    .materia-color-input {
      width: 30px;
      height: 30px;
      border-radius: 50%;
      border: 1px solid var(--border);
      padding: 0;
      cursor: pointer;
      background: none;
      appearance: none;
      -webkit-appearance: none;
    }

    .materia-color-input:focus,
    .materia-color-input:focus-visible {
      outline: none;
      box-shadow: none;
    }

    .materia-color-input::-webkit-color-swatch-wrapper {
      padding: 3px;
      border-radius: 50%;
    }

    .materia-color-input::-webkit-color-swatch {
      border: none;
      border-radius: 50%;
    }


@media (max-width: 980px) {
  .materia-controls {
    grid-template-columns: minmax(170px, 1fr) auto 32px 32px auto;
  }
}

@media (max-width: 760px) {
  .materia-controls {
    grid-template-columns: 1fr 1fr;
    justify-content: stretch;
  }

  .materia-carpeta-select {
    grid-column: 1 / -1;
  }

  .materia-mover-btn,
  .materia-controls .btn-small {
    width: 100%;
    min-width: 0;
  }
}

    .articulo {
      background: var(--article-bg);
      padding: 16px;
      border-radius: 10px;
      border-left: 6px solid var(--accent);
      margin-top: 0;
      box-shadow: none;
      cursor: grab;
      position: relative;
      contain: paint;
      width: 100%;
      box-sizing: border-box;
      transform: translateY(0);
      transition: transform 0.15s ease;
    }

    .articulo:hover {
      transform: translateY(-1px);
    }

    .articulo:active {
      cursor: grabbing;
      transform: translateY(1px);
    }

    .articulo.arrastrando {
      opacity: 0.9;
      transform: translateY(-1px);
    }

    .articulo-titulo {
      font-size: 18px;
      font-weight: bold;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .articulo-titulo-texto {
      flex: 0 0 auto;
      display: inline-block;
      white-space: pre-wrap;
      border: none;
      border-radius: 0;
      padding: 0;
      transition: color 0.2s ease;
    }

    .articulo-titulo-texto:focus {
      outline: none !important;
      border: none !important;
      box-shadow: none !important;
    }

    .indicador {
      font-size: 18px;
      font-weight: bold;
      transition: 0.25s ease;
      margin-left: auto;
    }

    .articulo.abierto .indicador {
      transform: rotate(90deg);
    }

    .articulo-contenido {
      display: none;
      margin-top: 12px;
      font-size: 15px;
      padding: 8px;
      border-radius: 6px;
      border: 2px solid transparent;
      white-space: pre-wrap;
      line-height: 1.55;
      width: 100%;
      box-sizing: border-box;
    }

    .articulo-contenido:focus {
      border-color: var(--focus-contrast);
      background: var(--focus-surface);
      outline: none;
    }

    .articulo.abierto .articulo-contenido { display: block; }

    .nota-box {
      display: none;
      width: 100%;
      margin-top: 10px;
      padding: 8px;
      border-radius: 8px;
      border: 2px solid var(--border);
      background: var(--card);
      resize: none;
      min-height: 70px;
      box-sizing: border-box;
    }

.materia-title {
  font-size: 21px;
  font-weight: bold;
  padding: 0 0 6px;
  flex: 1;
  cursor: text;
  border-bottom: 2px solid var(--materia-underline);
  transition: color 0.25s ease;
  caret-color: var(--focus-contrast) !important;
  margin: 0;
  min-height: 34px;
  display: flex;
  align-items: flex-end;
  min-width: 0;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.materia-title:focus {
  outline: none !important;
  box-shadow: none !important;
  border-bottom: 2px solid var(--materia-underline) !important;
}

    .nota-resizer {
      position: absolute;
      bottom: 0;
      left: 0;
      height: 14px;
      width: 100%;
      cursor: ns-resize;
      display: none;
    }

    .menu-contextual {
      position: fixed;
      z-index: 9999;
      background: var(--card);
      border: 1px solid var(--border);
      border-radius: 10px;
      box-shadow: 0 10px 28px rgba(0, 0, 0, 0.18);
      display: none;
      flex-direction: column;
      min-width: 170px;
      padding: 6px;
      gap: 6px;
    }

    .menu-contextual button {
      width: 100%;
      padding: 10px 12px;
      border: none;
      border-radius: 8px;
      background: var(--accent);
      color: white;
      cursor: pointer;
      font-weight: 700;
      transition: background 0.2s ease, transform 0.12s ease;
    }

    .menu-contextual button.menu-contextual-delete {
      background: var(--danger-solid-bg);
      color: var(--danger-solid-text);
    }

    .menu-contextual button.menu-contextual-delete:hover:not(:disabled) {
      background: var(--danger-solid-hover);
    }

    .menu-contextual button:hover:not(:disabled) { background: var(--accent-light); }

    .menu-contextual button:active:not(:disabled) { transform: translateY(1px); }

    .menu-contextual button:disabled {
      background: var(--border);
      color: #6b7280;
      cursor: not-allowed;
      box-shadow: none;
    }

    #errorBox {
      display: none;
      background: #dc2626;
      color: white;
      padding: 14px;
      border-radius: 8px;
      margin-top: 15px;
      font-weight: bold;
      text-align: center;
    }
/* Evita que la barra de materias se estire más allá de su contenido */
.layout {
  align-items: stretch;
}

/* Sidebar: tamaño fijo en grandes pantallas */
.sidebarMaterias {
  flex-shrink: 0;
  width: 270px;
}

/* Panel principal ocupa todo el espacio restante */
.mainPanel {
  min-width: 0;
}

/* Celular muy pequeño */
@media (max-width: 600px) {
  .carpetaSemestreAleta {
    left: 50%;
    transform: translateX(-50%);
    min-width: 120px;
    top: -30px;
    padding: 6px 10px;
  }

  .layout {
    flex-direction: column !important;
    gap: 16px !important;
  }

 .sidebarMaterias {
  width: 100% !important;
  max-width: 100% !important;
  box-sizing: border-box !important;
}

  .mainPanel {
    width: 100% !important;
  }

  .buscador-flotante {
    position: static;
    width: 100%;
    margin-top: 10px;
  }

  .form-row {
    grid-template-columns: 1fr !important;
  }
}

/* Tablets y ventanas medianas deben mantenerse horizontales */
@media (max-width: 900px) and (min-width: 601px) {
  .form-row {
    grid-template-columns: 1fr 1fr !important;
  }
}

/* Horario semanal */
.weekly-schedule-layout {
  width: min(98vw, var(--layout-max-width));
  box-sizing: border-box;
  margin: var(--section-gap) auto;
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}

.weekly-schedule {
  flex: 1 1 auto;
  min-width: 0;
  background: transparent;
  border-radius: 0;
  padding: 0;
  border: none;
  box-shadow: none;
}
.weekly-schedule-head {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 12px;
  margin-bottom: 12px;
}
.weekly-schedule h3 { margin: 0; color: var(--accent); font-size: 20px; }
.weekly-schedule-title {
  cursor: text;
  padding: 0px 0px;
  border-radius: 6px;
  margin-left: 0;
}
.weekly-schedule-title:focus {
  outline: none;
  background: transparent;
}

[contenteditable="true"] {
  caret-color: #000 !important;
}

body.oscuro [contenteditable="true"] {
  caret-color: #fff !important;
}

input,
textarea {
  caret-color: #000 !important;
}

body.oscuro input,
body.oscuro textarea {
  caret-color: #fff !important;
}

.schedule-grid { display: flex; gap: 12px; width: 100%; }
.schedule-day {
  flex: 1;
  min-width: 140px;
  background: transparent;
  border-radius: 0;
  padding: 0;
  box-sizing: border-box;
  border: none;
  box-shadow: none;
  transition: border-color 0.2s;
}
.schedule-day-head { font-weight: 700; color: var(--accent); margin-bottom: 6px; font-size: 15px; display:flex; align-items:center; justify-content:flex-start; gap: 6px; }
.schedule-list { list-style: none; margin: 0; padding: 0; min-height: 80px; display: flex; flex-direction: column; gap: 12px; }
.class-card {
  display: grid;
  grid-template-columns: 1fr 72px; /* contenido + columna de acciones */
  gap: 12px;
  padding: 14px 14px;
  border-radius: 12px;
  background: var(--card);
  border: 1.5px solid var(--border);
  box-shadow: 0 6px 18px rgba(16,24,40,0.04);
  cursor: grab;
  min-height: 72px;
  box-sizing: border-box;
  position: relative;
  transition: border-color 0.2s;
}
.class-card.dragging { opacity: 0.6; transform: scale(0.995); }
.class-name {
  font-weight: 800;
  color: var(--focus-contrast);
  font-size: 17px;
  line-height: 1.12;
  overflow: visible;
  white-space: normal;
  word-break: break-word;
}
body.oscuro .class-card.light-bg .class-name,
body.oscuro .class-card.light-bg .class-meta,
body.oscuro .class-card.light-bg .class-actions .absences {
  color: #111827;
}
.class-delete {
  background: var(--danger-solid-bg);
  border: 1px solid var(--danger-solid-border);
  color: var(--danger-solid-text);
  cursor: pointer;
  font-weight: 700;
  padding: 4px 6px;
  border-radius: 6px;
}
.class-delete:hover {
  background: var(--danger-solid-hover);
  border-color: var(--danger-solid-hover);
}


.class-delete,
.preview-close-x,
.modal-close,
.buscador-cerrar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  vertical-align: middle;
  line-height: 1;
  width: 34px;
  height: 34px;
  min-width: 34px;
  min-height: 34px;
  padding: 0;
  font-size: 20px;
  font-weight: 700;
  font-family: "Segoe UI Symbol", "Apple Color Emoji", "Noto Sans Symbols 2", "Poppins", sans-serif;
  letter-spacing: 0;
}

.schedule-malla {
  display: none;
  width: var(--malla-width, 320px);
  flex: 0 0 auto;
}

.schedule-malla-card {
  background: var(--card);
  border: 1.5px solid var(--border);
  border-radius: 12px;
  padding: 14px;
  box-shadow: 0 6px 18px rgba(16, 24, 40, 0.04);
  display: flex;
  flex-direction: column;
  gap: 6px;
  position: relative;
}

.malla-card-actions {
  position: absolute;
  top: 4px;
  right: 10px;
  gap: 6px;
}

.schedule-malla-title {
  margin: 0;
  font-size: 15px;
  color: var(--accent);
}

.schedule-malla-image-wrap {
  position: relative;
  width: 100%;
}

.schedule-malla-card img {
  width: 100%;
  height: auto;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--article-bg);
  padding: 6px;
  box-sizing: border-box;
  cursor: zoom-in;
}

.malla-resize-handle {
  position: absolute;
  left: 10px;
  bottom: 10px;
  width: 16px;
  height: 16px;
  border: none;
  background: transparent;
  cursor: nesw-resize;
  padding: 0;
  z-index: 2;
}

.schedule-malla-placeholder {
  margin: 0;
  color: var(--muted-text);
  font-size: 13px;
}

body.malla-resizing,
body.malla-resizing * {
  cursor: nesw-resize !important;
  user-select: none;
}

body.malla-activa .schedule-malla {
  display: block;
}

.malla-preview-card {
  width: min(1200px, 96vw);
  max-width: min(1200px, 96vw);
  max-height: min(92vh, 1000px);
  --modal-gap: 10px;
  padding: 14px 16px 16px;
}

.malla-preview-body {
  overflow: auto;
  display: flex;
  min-height: 0;
  height: 100%;
  align-items: flex-start;
  justify-content: flex-start;
  padding: 6px;
}

.malla-preview-body.pan-enabled {
  cursor: grab;
}

.malla-preview-body.is-panning {
  cursor: grabbing;
  user-select: none;
}

.malla-preview-zoom-area {
  display: inline-block;
  flex: 0 0 auto;
  margin: auto;
}

.malla-preview-canvas-wrap {
  position: relative;
  display: inline-block;
  transform: scale(var(--malla-zoom, 1));
  transform-origin: top left;
}

.malla-preview-canvas-wrap:focus,
.malla-preview-canvas-wrap:focus-visible {
  outline: none;
  box-shadow: none;
}

.malla-preview-body img {
  width: auto;
  height: auto;
  border-radius: 8px;
  border: none;
  background: transparent;
  padding: 0;
  box-sizing: border-box;
}

.malla-preview-canvas-wrap canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border-radius: 10px;
  pointer-events: none;
}

.malla-preview-canvas-wrap.drawing-active canvas {
  pointer-events: auto;
  cursor: crosshair;
}

.malla-preview-toolbar {
  display: flex;
  gap: 6px;
  margin-left: auto;
  align-items: center;
}

.malla-zoom-controls {
  display: flex;
  gap: 6px;
  margin-right: 6px;
  align-items: center;
}

.malla-zoom-controls .zoom-btn {
  height: 28px;
  width: 28px;
  border-radius: 8px;
  font-size: 14px;
  line-height: 1;
  padding: 0;
}

.malla-tool {
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  font-size: 12px;
  font-weight: 600;
  padding: 6px 8px;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.15s ease, transform 0.12s ease;
}

.malla-tool:hover {
  background: var(--focus-surface);
}

.malla-tool:active {
  transform: translateY(1px);
}

.malla-tool[aria-pressed="true"] {
  background: rgba(59, 130, 246, 0.15);
  border-color: rgba(59, 130, 246, 0.45);
  color: var(--accent);
}

.malla-tool-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.malla-tool-primary:hover {
  background: var(--accent-light);
}

.malla-preview-card .modal-head h3 {
  color: var(--accent);
}

@media (max-width: 900px) {
  .weekly-schedule-layout {
    flex-direction: column;
  }

  body.malla-activa .schedule-malla {
    width: 100%;
  }
}

/* Editor inline dentro del horario */
.class-editor { display: flex; flex-direction: column; gap: 8px; padding: 8px; border-radius: 8px; background: var(--card); border: 1px solid var(--border); position: relative; }
.class-editor .editor-row { display: flex; gap: 8px; }
.class-editor input { padding: 8px; border-radius: 8px; border: 1px solid var(--border); background: var(--card); color: var(--text); font-weight: 600; flex: 1; min-width: 0; box-sizing: border-box; }
.class-editor .editor-absences { width: 88px; }
.class-editor .editor-actions { display:flex; }
.class-editor .editor-buttons { display:grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap:8px; width: 100%; min-width: 0; }
.class-editor .editor-save {
  min-width: 0;
  width: 100%;
  background: var(--accent);
  color: #fff;
}
.class-editor .editor-cancel {
  min-width: 0;
  width: 100%;
  background: var(--danger-solid-bg);
  color: var(--danger-solid-text);
}
.class-editor .editor-save:hover,
.class-editor .editor-cancel:hover { filter: brightness(0.95); }
.class-editor .editor-save:active,
.class-editor .editor-cancel:active { transform: translateY(1px); }

@media (max-width: 420px) {
  .class-editor .editor-buttons {
    grid-template-columns: 1fr;
  }
}

.class-main { display:flex; flex-direction:column; align-items: flex-start; gap:6px; flex: 1 1 auto; min-width: 0; }
.class-meta { font-size: 13px; color: var(--text); display:flex; gap:8px; align-items:center; flex-wrap: wrap; font-weight: 600; }
.class-actions {
  grid-column: 2 / 3;
  grid-row: 1 / 2;
  width: 72px;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center; /* centrar verticalmente faltas y botones */
  gap: 8px;
  padding-top: 0;
}
.class-actions .absences {
  font-size: 13px;
  color: var(--text);
  font-weight: 700;
  background: rgba(0,0,0,0.03);
  padding: 6px 10px;
  border-radius: 999px;
  display: inline-block;
  text-align: center;
  min-width: 56px;
}
.action-buttons { display: flex; flex-direction: row; gap: 8px; align-items: center; justify-content: center; }
.action-buttons button:not(.class-delete) {
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 6px;
  border-radius: 8px;
  width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.action-buttons .edit-btn { color: #1e3a8a; width:32px; height:32px; padding:0; }
.action-buttons .edit-btn:hover { background: var(--accent-light); color: #fff; }
body.oscuro .action-buttons button:hover { background: rgba(255, 255, 255, 0.16); }
body.oscuro .action-buttons .edit-btn:hover { background: rgba(96, 165, 250, 0.35); color: #fff; }

/* color button (top-right) */
.class-card { position: relative; }
/* place small square color input inside action buttons for symmetry */

/* corner placement: small square in top-right, visually separate from edit/delete */
/* per-card color picker removed */

.class-actions { padding-right: 0; }

.class-card:hover { transform: translateY(-2px); }

.action-buttons .class-delete {
  background: transparent;
  border: none;
  color: var(--danger-solid-bg);
  width: 32px;
  height: 32px;
  min-width: 32px;
  min-height: 32px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 19px;
  line-height: 1;
  font-weight: 700;
  border-radius: 8px;
}
.action-buttons .class-delete:hover { background: var(--danger-solid-bg); color: #fff; }
body.oscuro .action-buttons .class-delete:hover { background: var(--danger-solid-bg); color: #fff; }


.day-add {
  background: var(--accent);
  color: #fff;
  border: none;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  cursor: pointer;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  margin-left: 4px;
}
.day-add:hover { background: var(--accent-light); }

@media (max-width: 800px) {
  .schedule-grid { flex-direction: column; }
}


/* Ajuste óptico: algunas X se ven bajas en ciertos botones (configuración/buscador/preview).
   Se recentran visualmente sin cambiar el diseño base. */
.preview-close-x,
.modal-close,
.buscador-cerrar {
  line-height: 0.86;
  padding-bottom: 2px;
}

#modalConfiguracion .modal-close,
#mallaPreviewClose.modal-close,
#documentoLecturaClose.modal-close,
.buscador-cerrar {
  padding-bottom: 2px;
}

.backup-message {
  margin: 0;
  font-size: 13px;
  font-weight: 600;
  color: #dc2626;
}