/* ==========================================================================
   Generador de Apuntes Método Cornell e Impresión A4
   Fijate Tools • Canónico 2026
   ========================================================================== */

:root {
  --bg-page: #0b0f17;
  --bg-card: rgba(18, 24, 38, 0.95);
  --bg-subtle: rgba(255, 255, 255, 0.03);
  --bg-input: #121826;
  --bg-canvas: #0f1522;
  --border-card: rgba(255, 255, 255, 0.08);
  --border-cornell: rgba(255, 255, 255, 0.15);
  --border-focus: #0ea5e9;

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --pattern-line-color: rgba(255, 255, 255, 0.07);
  --pattern-dot-color: rgba(255, 255, 255, 0.15);

  --accent-color: #0ea5e9;
  --success-color: #10b981;
  --warning-color: #f59e0b;
  --danger-color: #ef4444;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
  --shadow-canvas: 0 15px 35px rgba(0, 0, 0, 0.4);
  --transition-fast: 0.15s ease;
  --transition-smooth: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"],
body.light-theme {
  --bg-page: #f1f5f9;
  --bg-card: #ffffff;
  --bg-subtle: #f8fafc;
  --bg-input: #f8fafc;
  --bg-canvas: #ffffff;
  --border-card: #e2e8f0;
  --border-cornell: #cbd5e1;
  --border-focus: #0284c7;

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;

  --pattern-line-color: rgba(15, 23, 42, 0.08);
  --pattern-dot-color: rgba(15, 23, 42, 0.2);

  --accent-color: #0284c7;
  --success-color: #059669;
  --warning-color: #d97706;
  --danger-color: #dc2626;

  --shadow-card: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
  --shadow-canvas: 0 12px 28px rgba(0, 0, 0, 0.08);
}

/* Reset y base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-page);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: 1.5;
  overflow-x: clip;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  line-height: 1.25;
}

/* Layout canónico */
.tool-layout {
  max-width: 1200px;
  margin: 1.5rem auto 3rem;
  padding: 0 1rem;
  width: 100%;
  flex: 1 0 auto;
}

.tool-with-sidebar {
  display: flex;
  gap: 2rem;
  align-items: flex-start;
  width: 100%;
}

.tool-main-content {
  flex: 1 1 0%;
  min-width: 0;
  width: 100%;
}

/* Tarjeta principal */
.card-main {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-card);
  margin-bottom: 2.5rem;
  backdrop-filter: blur(12px);
}

/* Presets bar */
.presets-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--border-card);
}

.presets-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.presets-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  flex: 1 1 auto;
}

.preset-chip {
  padding: 0.5rem 1rem;
  min-height: 40px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-card);
  background: var(--bg-subtle);
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.preset-chip:hover {
  background: var(--bg-input);
  color: var(--text-primary);
  border-color: var(--accent-color);
}

.preset-chip.active {
  background: var(--accent-color);
  border-color: var(--accent-color);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(14, 165, 233, 0.3);
}

.chip-clear {
  color: var(--danger-color);
  border-color: rgba(239, 68, 68, 0.3);
}

.chip-clear:hover {
  border-color: var(--danger-color);
  background: rgba(239, 68, 68, 0.1);
  color: var(--danger-color);
}

/* Barra de herramientas de formato y pauta */
.format-toolbar-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.5rem;
  padding: 0.85rem 1.25rem;
  background: var(--bg-subtle);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
}

.format-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.format-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.pattern-selector-group {
  display: inline-flex;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-card);
  overflow: hidden;
}

.btn-pattern {
  padding: 0.4rem 0.8rem;
  min-height: 38px;
  background: var(--bg-card);
  border: none;
  border-right: 1px solid var(--border-card);
  color: var(--text-secondary);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: all var(--transition-fast);
}

.btn-pattern:last-child {
  border-right: none;
}

.btn-pattern:hover {
  background: var(--bg-input);
  color: var(--text-primary);
}

.btn-pattern.active {
  background: var(--accent-color);
  color: #ffffff;
}

.toolbar-actions-right {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
}

.btn-print-action {
  padding: 0.55rem 1.25rem;
  min-height: 42px;
  background: var(--accent-color);
  color: #ffffff;
  border: none;
  border-radius: var(--radius-sm);
  font-family: 'Outfit', sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: all var(--transition-fast);
  box-shadow: 0 4px 14px rgba(14, 165, 233, 0.3);
}

.btn-print-action:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
}

.btn-outline-action {
  padding: 0.55rem 1rem;
  min-height: 42px;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: all var(--transition-fast);
}

.btn-outline-action:hover {
  background: var(--bg-input);
  color: var(--text-primary);
  border-color: var(--text-secondary);
}

/* Lienzo interactivo de la hoja Cornell */
.cornell-sheet-canvas {
  background-color: var(--bg-canvas);
  border: 2px solid var(--border-cornell);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-canvas);
  overflow: hidden;
  position: relative;
  display: flex;
  flex-direction: column;
  transition: background var(--transition-smooth);
}

/* Patrones de pauta de fondo */
.pattern-lined {
  background-image: linear-gradient(var(--pattern-line-color) 1px, transparent 1px);
  background-size: 100% 30px;
}

.pattern-grid {
  background-image:
    linear-gradient(to right, var(--pattern-line-color) 1px, transparent 1px),
    linear-gradient(to bottom, var(--pattern-line-color) 1px, transparent 1px);
  background-size: 24px 24px;
}

.pattern-dots {
  background-image: radial-gradient(var(--pattern-dot-color) 1.5px, transparent 1.5px);
  background-size: 20px 20px;
}

.pattern-blank {
  background-image: none;
}

/* Zona 1: Cabecera Cornell */
.cornell-header-zone {
  border-bottom: 2px solid var(--border-cornell);
  padding: 1.25rem 1.5rem;
  background: rgba(255, 255, 255, 0.015);
}

.header-inputs-grid {
  display: grid;
  grid-template-columns: 2fr 1.5fr 1fr 1.5fr;
  gap: 1rem;
}

@media (max-width: 850px) {
  .header-inputs-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 550px) {
  .header-inputs-grid {
    grid-template-columns: 1fr;
  }
}

.header-field {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.cornell-sublabel {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.cornell-input {
  background: transparent;
  border: none;
  border-bottom: 1px dashed var(--border-card);
  color: var(--text-primary);
  font-family: 'Inter', sans-serif;
  font-size: 0.95rem;
  padding: 0.3rem 0;
  outline: none;
  transition: border-color var(--transition-fast);
}

.cornell-input:focus {
  border-bottom-color: var(--border-focus);
}

.cornell-input.input-bold {
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--accent-color);
}

/* Zona 2 y 3: Cuerpo central de 2 columnas (30 % - 70 %) */
.cornell-body-zone {
  display: grid;
  grid-template-columns: 30% 70%;
  border-bottom: 2px solid var(--border-cornell);
  min-height: 480px;
}

@media (max-width: 768px) {
  .cornell-body-zone {
    grid-template-columns: 1fr;
  }
}

.cornell-cues-column {
  border-right: 2px solid var(--border-cornell);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  background: rgba(255, 255, 255, 0.01);
}

@media (max-width: 768px) {
  .cornell-cues-column {
    border-right: none;
    border-bottom: 2px solid var(--border-cornell);
  }
}

.cornell-notes-column {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
}

.column-badge-label {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.cornell-textarea {
  width: 100%;
  flex: 1 1 auto;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-primary);
  font-family: 'Inter', sans-serif;
  font-size: 0.95rem;
  line-height: 30px; /* Alineado exacto con la pauta de 30px */
  resize: vertical;
  padding: 0;
}

.textarea-cues {
  font-weight: 600;
  color: var(--accent-color);
}

.textarea-notes {
  font-weight: 400;
}

/* Zona 4: Resumen inferior */
.cornell-summary-zone {
  padding: 1.25rem 1.5rem;
  background: rgba(255, 255, 255, 0.02);
  min-height: 140px;
  display: flex;
  flex-direction: column;
}

.textarea-summary {
  font-style: italic;
  font-size: 0.95rem;
  line-height: 28px;
}

/* Barra de aviso de autoguardado */
.autosave-notice-bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Modales canónicos */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  padding: 1rem;
}

.modal-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  max-width: 460px;
  width: 100%;
  padding: 1.75rem;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
  animation: modalScale 0.2s ease-out;
}

@keyframes modalScale {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

.modal-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.modal-icon-alert {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  background: rgba(239, 68, 68, 0.15);
  color: var(--danger-color);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.modal-title {
  font-size: 1.15rem;
  font-weight: 700;
}

.modal-body {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.5;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 0.6rem;
}

.btn-modal-secondary {
  padding: 0.6rem 1rem;
  min-height: 40px;
  background: var(--bg-subtle);
  border: 1px solid var(--border-card);
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.875rem;
  cursor: pointer;
}

.btn-modal-secondary:hover {
  background: var(--bg-input);
  color: var(--text-primary);
}

.btn-modal-danger {
  padding: 0.6rem 1rem;
  min-height: 40px;
  background: var(--danger-color);
  border: none;
  color: #ffffff;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.875rem;
  cursor: pointer;
  transition: opacity var(--transition-fast);
}

.btn-modal-danger:hover {
  filter: brightness(1.1);
}

/* ==========================================================================
   DIRECTIVAS DE IMPRESIÓN OFICIAL A4 (@media print)
   ========================================================================== */
@media print {
  @page {
    size: A4 portrait;
    margin: 8mm;
  }

  body {
    background: #ffffff !important;
    color: #000000 !important;
    font-size: 10pt;
  }

  /* Ocultar elementos institucionales, publicidad y controles */
  .app-header,
  .tools-ad-banner-section,
  .tool-ad-sidebar,
  .presets-bar,
  .format-toolbar-row,
  .autosave-notice-bar,
  .seo-guide-section,
  .fijate-footer,
  .modal-backdrop,
  .column-badge-label {
    display: none !important;
  }

  .main-wrapper,
  .tool-layout,
  .tool-with-sidebar,
  .tool-main-content,
  .card-main {
    margin: 0 !important;
    padding: 0 !important;
    border: none !important;
    box-shadow: none !important;
    background: transparent !important;
    width: 100% !important;
    max-width: 100% !important;
  }

  .cornell-sheet-canvas {
    border: 2px solid #000000 !important;
    box-shadow: none !important;
    background-color: #ffffff !important;
    color: #000000 !important;
    height: 100% !important;
    min-height: 275mm !important;
    page-break-inside: avoid;
  }

  .pattern-lined {
    background-image: linear-gradient(#d1d5db 1px, transparent 1px) !important;
    background-size: 100% 30px !important;
  }

  .pattern-grid {
    background-image:
      linear-gradient(to right, #e5e7eb 1px, transparent 1px),
      linear-gradient(to bottom, #e5e7eb 1px, transparent 1px) !important;
    background-size: 20px 20px !important;
  }

  .pattern-dots {
    background-image: radial-gradient(#9ca3af 1.5px, transparent 1.5px) !important;
    background-size: 18px 18px !important;
  }

  .pattern-blank {
    background-image: none !important;
  }

  .cornell-header-zone {
    border-bottom: 2px solid #000000 !important;
    background: transparent !important;
  }

  .cornell-input {
    color: #000000 !important;
    border-bottom-color: #9ca3af !important;
  }

  .cornell-input.input-bold {
    color: #000000 !important;
  }

  .cornell-body-zone {
    border-bottom: 2px solid #000000 !important;
    min-height: 180mm !important;
  }

  .cornell-cues-column {
    border-right: 2px solid #000000 !important;
    background: transparent !important;
  }

  .cornell-textarea {
    color: #000000 !important;
    overflow: hidden !important;
  }

  .textarea-cues {
    color: #000000 !important;
  }

  .cornell-summary-zone {
    background: transparent !important;
    min-height: 40mm !important;
  }
}