/* 
 * AcademicOS - Technical Blueprint & Graph Paper UI Design System
 * Inspired by millimeter engineering drafting sheets & technical blueprints.
 */

:root {
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Roboto Mono', Menlo, Consolas, monospace;

  /* Drafting Paper Light Theme (Default) */
  --bg-color: #f8fafc;
  --paper-bg: #fdfdfd;
  --grid-line-major: rgba(2, 132, 199, 0.16);
  --grid-line-minor: rgba(2, 132, 199, 0.06);
  --grid-size-major: 80px;
  --grid-size-minor: 16px;

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --border-color: #cbd5e1;
  --border-dark: #334155;

  --eng-blue: #0284c7;
  --eng-blue-dark: #0369a1;
  --eng-blue-light: #e0f2fe;
  --eng-cyan: #06b6d4;
  --eng-green: #059669;
  --eng-green-light: #ecfdf5;
  --eng-amber: #d97706;
  --eng-amber-light: #fffbeb;
  --eng-red: #dc2626;
  --eng-red-light: #fef2f2;

  --card-bg: rgba(255, 255, 255, 0.92);
  --card-border: #cbd5e1;
  --shadow-subtle: 0 1px 3px rgba(15, 23, 42, 0.08), 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-elevated: 0 10px 25px -5px rgba(15, 23, 42, 0.12), 0 8px 10px -6px rgba(15, 23, 42, 0.08);

  --titleblock-bg: #ffffff;
  --titleblock-border: #0f172a;
}

[data-theme="blueprint"] {
  --bg-color: #0b1528;
  --paper-bg: #0d1b33;
  --grid-line-major: rgba(56, 189, 248, 0.22);
  --grid-line-minor: rgba(56, 189, 248, 0.07);

  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border-color: #1e3a5f;
  --border-dark: #38bdf8;

  --eng-blue: #38bdf8;
  --eng-blue-dark: #0284c7;
  --eng-blue-light: rgba(56, 189, 248, 0.12);
  --eng-cyan: #22d3ee;
  --eng-green: #10b981;
  --eng-green-light: rgba(16, 185, 129, 0.15);
  --eng-amber: #f59e0b;
  --eng-amber-light: rgba(245, 158, 11, 0.15);
  --eng-red: #f87171;
  --eng-red-light: rgba(248, 113, 113, 0.15);

  --card-bg: rgba(13, 27, 51, 0.88);
  --card-border: #1e3a5f;
  --shadow-subtle: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
  --shadow-elevated: 0 20px 25px -5px rgba(0, 0, 0, 0.6);

  --titleblock-bg: #091322;
  --titleblock-border: #38bdf8;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-color);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.5;
  background-image: 
    linear-gradient(var(--grid-line-major) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line-major) 1px, transparent 1px),
    linear-gradient(var(--grid-line-minor) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line-minor) 1px, transparent 1px);
  background-size: 
    var(--grid-size-major) var(--grid-size-major),
    var(--grid-size-major) var(--grid-size-major),
    var(--grid-size-minor) var(--grid-size-minor),
    var(--grid-size-minor) var(--grid-size-minor);
  background-position: -1px -1px;
  overflow-x: hidden;
}

/* Container */
.app-container {
  max-width: 1440px;
  margin: 0 auto;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* ==========================================================================
   ENGINEERING TITLE BLOCK (Selo Técnico de Projeto)
   ========================================================================== */
.title-block {
  background: var(--titleblock-bg);
  border: 2px solid var(--border-dark);
  box-shadow: var(--shadow-subtle);
  position: relative;
  border-radius: 4px;
  overflow: hidden;
}

.title-block::before {
  content: "ENG-DWG // REV 2.4.0";
  position: absolute;
  top: 4px;
  right: 12px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
  letter-spacing: 1px;
}

.title-block-inner {
  display: grid;
  grid-template-columns: 2.2fr 1.2fr 1fr auto;
  border-collapse: collapse;
}

@media (max-width: 900px) {
  .title-block-inner {
    grid-template-columns: 1fr;
  }
}

.tb-cell {
  padding: 12px 18px;
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.tb-cell:last-child {
  border-right: none;
}

.tb-label {
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.5px;
  margin-bottom: 2px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.tb-value {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.tb-main-title {
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -0.5px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.tb-main-title .logo-icon {
  width: 28px;
  height: 28px;
  background: var(--eng-blue);
  color: #ffffff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 14px;
  border-radius: 3px;
}

.status-badge {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 2px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  text-transform: uppercase;
}

.status-badge.ready {
  background: var(--eng-green-light);
  color: var(--eng-green);
  border: 1px solid var(--eng-green);
}

.status-badge.active {
  background: var(--eng-blue-light);
  color: var(--eng-blue-dark);
  border: 1px solid var(--eng-blue);
}

.pulse-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  display: inline-block;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.3; transform: scale(0.85); }
  100% { opacity: 1; transform: scale(1); }
}

.tb-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
}

/* Theme Toggle Button */
.btn-icon {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  width: 36px;
  height: 36px;
  border-radius: 3px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.btn-icon:hover {
  background: var(--eng-blue-light);
  border-color: var(--eng-blue);
  color: var(--eng-blue-dark);
}

/* ==========================================================================
   NAVIGATION TABS (Abas de Projeto)
   ========================================================================== */
.nav-tabs-bar {
  display: flex;
  align-items: flex-end;
  border-bottom: 2px solid var(--border-dark);
  gap: 6px;
  margin-top: 4px;
}

.nav-tab {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 10px 22px;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-bottom: none;
  border-radius: 4px 4px 0 0;
  cursor: pointer;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all 0.15s ease;
  position: relative;
  top: 2px;
}

.nav-tab:hover {
  color: var(--text-primary);
  background: #ffffff;
}

.nav-tab.active {
  background: var(--bg-color);
  color: var(--eng-blue-dark);
  border: 2px solid var(--border-dark);
  border-bottom: 2px solid var(--bg-color);
  font-weight: 700;
  z-index: 2;
}

[data-theme="blueprint"] .nav-tab.active {
  color: var(--eng-blue);
}

.tab-badge {
  background: var(--eng-blue-light);
  color: var(--eng-blue-dark);
  padding: 1px 6px;
  border-radius: 10px;
  font-size: 10px;
}

/* ==========================================================================
   PANEL VIEWS & WORKSPACE
   ========================================================================== */
.view-panel {
  display: none;
  flex-direction: column;
  gap: 20px;
}

.view-panel.active {
  display: flex;
}

/* Control Bar */
.control-bar {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 4px;
  padding: 12px 18px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  backdrop-filter: blur(8px);
}

.control-group {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.search-input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.search-input {
  font-family: var(--font-mono);
  font-size: 12px;
  background: var(--paper-bg);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 7px 12px 7px 32px;
  border-radius: 3px;
  width: 260px;
  outline: none;
  transition: border-color 0.2s ease;
}

.search-input:focus {
  border-color: var(--eng-blue);
  box-shadow: 0 0 0 2px var(--eng-blue-light);
}

.search-icon {
  position: absolute;
  left: 10px;
  font-size: 13px;
  color: var(--text-muted);
  pointer-events: none;
}

.control-select {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  background: var(--paper-bg);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 6px 12px;
  border-radius: 3px;
  outline: none;
  cursor: pointer;
  transition: all 0.15s ease;
}

.control-select:focus,
.control-select:hover {
  border-color: var(--eng-blue);
}

[data-theme="blueprint"] .control-select {
  background: #070d18;
  color: #f1f5f9;
  border-color: #1e3a5f;
}


/* Technical Buttons */
.btn {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 8px 16px;
  border-radius: 3px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.15s ease;
  border: 1px solid transparent;
  outline: none;
}

.btn-primary {
  background: var(--eng-blue);
  color: #ffffff;
  border-color: var(--eng-blue-dark);
}

.btn-primary:hover {
  background: var(--eng-blue-dark);
  box-shadow: 0 2px 8px rgba(2, 132, 199, 0.3);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--border-color);
}

.btn-outline:hover {
  background: var(--eng-blue-light);
  border-color: var(--eng-blue);
  color: var(--eng-blue-dark);
}

.btn-danger {
  background: transparent;
  color: var(--eng-red);
  border-color: var(--eng-red);
}

.btn-danger:hover {
  background: var(--eng-red-light);
}

.btn-sm {
  padding: 4px 10px;
  font-size: 11px;
}

/* ==========================================================================
   DRAG & DROP BLUEPRINT DROPZONE
   ========================================================================== */
.dropzone {
  border: 2px dashed var(--eng-blue);
  background: var(--card-bg);
  border-radius: 4px;
  padding: 28px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
  overflow: hidden;
}

.dropzone::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: repeating-linear-gradient(
    45deg,
    transparent,
    transparent 10px,
    var(--grid-line-minor) 10px,
    var(--grid-line-minor) 20px
  );
  pointer-events: none;
}

.dropzone:hover, .dropzone.dragover {
  background: var(--eng-blue-light);
  border-color: var(--eng-blue-dark);
  transform: translateY(-1px);
}

.dropzone-content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.dropzone-icon {
  font-size: 32px;
  color: var(--eng-blue);
}

.dropzone-title {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
}

.dropzone-desc {
  font-size: 12px;
  color: var(--text-muted);
}

/* ==========================================================================
   BREADCRUMBS & FOLDER NAVIGATION
   ========================================================================== */
.breadcrumbs-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  padding: 8px 14px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  flex-wrap: wrap;
}

.breadcrumb-btn {
  background: transparent;
  border: none;
  color: var(--eng-blue-dark);
  cursor: pointer;
  font-weight: 600;
  padding: 2px 6px;
  border-radius: 3px;
  transition: all 0.15s ease;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

[data-theme="blueprint"] .breadcrumb-btn {
  color: var(--eng-blue);
}

.breadcrumb-btn:hover {
  background: var(--eng-blue-light);
}

.breadcrumb-btn.active {
  color: var(--text-primary);
  font-weight: 700;
  cursor: default;
  background: transparent;
}

.breadcrumb-sep {
  color: var(--text-muted);
  font-size: 11px;
}

/* Format Badges */
.format-badge {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 2px;
  text-transform: uppercase;
}

.format-badge.dir {
  background: var(--eng-amber-light);
  color: var(--eng-amber);
  border: 1px solid var(--eng-amber);
}

.format-badge.doc-pdf {
  background: #fef2f2;
  color: #dc2626;
  border: 1px solid #f87171;
}

.format-badge.doc-md {
  background: #f5f3ff;
  color: #7c3aed;
  border: 1px solid #c4b5fd;
}

.format-badge.image {
  background: #ecfdf5;
  color: #059669;
  border: 1px solid #6ee7b7;
}

.format-badge.doc-typ,
.format-badge.typst {
  background: #f0f9ff;
  color: #0284c7;
  border: 1px solid #0284c7;
}

.format-badge.other {
  background: var(--paper-bg);
  color: var(--text-muted);
  border: 1px solid var(--border-color);
}

/* ==========================================================================
   SOURCES & PRESENTATIONS CARDS & GRID
   ========================================================================== */
.sources-grid,
.decks-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 16px;
}

.source-card {
  background: var(--card-bg);
  border: 1.5px solid var(--border-color);
  border-left: 5px solid var(--eng-blue);
  border-radius: 4px;
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 12px;
  transition: all 0.15s ease;
  position: relative;
  box-shadow: var(--shadow-subtle);
}

.source-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-elevated);
  border-color: var(--eng-blue);
}

.source-card.is-dir {
  border-left-color: var(--eng-amber);
  cursor: pointer;
}

.source-card.is-pdf {
  border-left-color: #dc2626;
}

.source-card.is-typst {
  border-left-color: #0284c7;
}

.source-card.is-md,
.source-card.is-marp {
  border-left-color: #16a34a;
}

.source-card.is-img {
  border-left-color: #059669;
}

.source-card-header {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.source-card-icon {
  font-size: 22px;
  line-height: 1;
  padding-top: 2px;
  flex-shrink: 0;
}

.source-card-info {
  flex: 1;
  min-width: 0;
}

.source-card-name {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.3;
  word-break: break-word;
}

.source-card-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 5px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
}

.source-card-desc {
  font-family: var(--font-main);
  font-size: 12px;
  color: var(--text-secondary, #334155);
  line-height: 1.45;
  margin-top: 6px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  word-break: break-word;
}

[data-theme="blueprint"] .source-card-desc {
  color: #94a3b8;
}

.source-card-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 6px;
}

.source-card-actions .btn-present-dual,
.source-card-actions .btn-present-pdf {
  flex: 1;
  white-space: nowrap;
}

.source-card-actions .btn-delete-item,
.source-card-actions .btn-delete-deck,
.source-card-actions .btn-edit-item,
.source-card-actions .btn-edit-deck {
  width: 32px;
  height: 32px;
  padding: 0;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--paper-bg);
  cursor: pointer;
  transition: all 0.15s ease;
  font-size: 14px;
}

.source-card-actions .btn-edit-item:hover,
.source-card-actions .btn-edit-deck:hover {
  background: var(--eng-blue-light);
  border-color: var(--eng-blue);
}

.source-card-actions .btn-delete-item:hover,
.source-card-actions .btn-delete-deck:hover {
  background: var(--eng-red-light);
  border-color: var(--eng-red);
}

/* ==========================================================================
   MODALS & SLIDE VIEWPORT (HIGH FIDELITY MARP ENGINE)
   ========================================================================== */
#deckViewerModal {
  width: 1280px;
}

.slide-viewer-layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 20px;
  min-height: 540px;
}

@media (max-width: 960px) {
  .slide-viewer-layout {
    grid-template-columns: 1fr;
  }
}

.slide-stage-container {
  background: #091322;
  border: 1px solid var(--border-dark);
  border-radius: 4px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
}

.slide-viewport {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  overflow: hidden;
  background: #060c17;
}

.slide-viewport-inner {
  width: 100%;
  max-width: 960px;
  aspect-ratio: 16 / 9;
  background: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.slide-viewport-inner .marpit {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.slide-viewport-inner svg[data-marpit-svg] {
  width: 100% !important;
  height: 100% !important;
  display: block;
  box-shadow: 0 10px 30px rgba(0,0,0,0.6);
  border-radius: 2px;
}

/* Proteção e calibração de +30% nas equações MathJax/KaTeX */
.marpit mjx-container[jax="SVG"],
.marpit .MathJax {
  font-size: 1.30em !important;
}
.marpit mjx-container[jax="SVG"][display="true"] {
  font-size: 1.35em !important;
  margin: 8px 0 !important;
}
.marpit svg:not([data-marpit-svg]) {
  width: auto !important;
  height: auto !important;
  max-width: none !important;
  max-height: none !important;
  display: inline !important;
  vertical-align: middle !important;
}

.slide-controls-bar {
  background: #0f172a;
  padding: 10px 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid #334155;
  color: #f8fafc;
}

.slide-counter {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--eng-cyan);
}

.slide-sidebar {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.slide-thumbnails-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  overflow-y: auto;
  max-height: 460px;
  padding-right: 4px;
}

.slide-thumbnail-item {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 3px;
  padding: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 10px;
  transition: all 0.15s ease;
}

.slide-thumbnail-item:hover, .slide-thumbnail-item.active {
  border-color: var(--eng-blue);
  background: var(--eng-blue-light);
}

.slide-thumbnail-num {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  color: var(--eng-blue-dark);
  min-width: 24px;
}

.slide-thumbnail-text {
  font-size: 12px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--text-primary);
}

/* ==========================================================================
   TOAST NOTIFICATIONS (Alertas de Engenharia)
   ========================================================================== */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 9999;
}

.toast {
  background: var(--card-bg);
  border: 1px solid var(--border-dark);
  border-left: 4px solid var(--eng-blue);
  box-shadow: var(--shadow-elevated);
  padding: 12px 16px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
  animation: slideIn 0.2s ease-out;
  min-width: 280px;
}

.toast.success { border-left-color: var(--eng-green); }
.toast.error { border-left-color: var(--eng-red); }
.toast.warning { border-left-color: var(--eng-amber); }

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* ==========================================================================
   DISCIPLINAS (CURSOS & MATÉRIAS) - GESTÃO ORGANIZACIONAL
   ========================================================================== */

.active-discipline-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--eng-blue-light);
  color: var(--eng-blue-dark);
  border: 1.5px solid var(--eng-blue);
  padding: 4px 10px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
}

[data-theme="blueprint"] .active-discipline-badge {
  color: var(--eng-blue);
  background: rgba(56, 189, 248, 0.15);
}

.btn-switch-discipline {
  font-size: 11px;
  padding: 2px 8px;
  background: transparent;
  border: 1px dashed var(--eng-blue);
  color: var(--eng-blue);
  border-radius: 3px;
  cursor: pointer;
  margin-left: 6px;
  transition: all 0.15s ease;
}

.btn-switch-discipline:hover {
  background: var(--eng-blue);
  color: #ffffff;
}

.disciplines-header-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--card-bg);
  border: 1.5px solid var(--border-color);
  padding: 14px 20px;
  border-radius: 6px;
  margin-bottom: 18px;
  box-shadow: var(--shadow-subtle);
}

.disciplines-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 20px;
  margin-top: 10px;
}

.discipline-card {
  background: var(--card-bg);
  border: 2px solid var(--border-color);
  border-top: 6px solid var(--eng-blue);
  border-radius: 6px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 16px;
  box-shadow: var(--shadow-subtle);
  transition: all 0.2s ease;
  position: relative;
  overflow: hidden;
}

.discipline-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-elevated);
  border-color: var(--eng-blue);
}

.discipline-card-header {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.discipline-icon-box {
  width: 48px;
  height: 48px;
  border-radius: 6px;
  background: var(--paper-bg);
  border: 1.5px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  flex-shrink: 0;
}

.discipline-title-group {
  flex: 1;
}

.discipline-name {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
  line-height: 1.3;
}

.discipline-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.discipline-code-tag {
  background: var(--paper-bg);
  border: 1px solid var(--border-color);
  padding: 1px 6px;
  border-radius: 3px;
  font-weight: 600;
  color: var(--text-secondary);
}

.discipline-desc {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.45;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.discipline-stats-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  background: var(--paper-bg);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 10px 14px;
}

.discipline-stat-item {
  display: flex;
  flex-direction: column;
}

.discipline-stat-val {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 700;
  color: var(--eng-blue);
}

.discipline-stat-lbl {
  font-size: 10px;
  font-family: var(--font-mono);
  text-transform: uppercase;
  color: var(--text-muted);
}

.discipline-card-actions {
  display: flex;
  gap: 10px;
  align-items: center;
}

.discipline-card-actions .btn-enter {
  flex: 1;
}

/* Badge Format Labels */
.format-badge {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 3px;
  text-transform: uppercase;
}

.format-badge.typst {
  background: #f0f9ff;
  color: #0284c7;
  border: 1px solid #0284c7;
}

.format-badge.marp {
  background: #f0fdf4;
  color: #16a34a;
  border: 1px solid #16a34a;
}

.format-badge.pdf {
  background: #fef2f2;
  color: #dc2626;
  border: 1px solid #dc2626;
}

[data-theme="blueprint"] .format-badge.typst {
  background: rgba(2, 132, 199, 0.2);
  color: #38bdf8;
  border: 1px solid rgba(56, 189, 248, 0.4);
}

[data-theme="blueprint"] .format-badge.marp {
  background: rgba(22, 163, 74, 0.15);
  color: #4ade80;
}

[data-theme="blueprint"] .format-badge.pdf {
  background: rgba(220, 38, 38, 0.15);
  color: #f87171;
}

/* Typst Slide Container Styles */
.typst-slide-container {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.typst-slide-container > svg {
  width: 100% !important;
  height: 100% !important;
  max-width: 100%;
  max-height: 100%;
  display: block;
  object-fit: contain;
}

/* Form Styles for Discipline Modal */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.form-group.full-width {
  grid-column: 1 / -1;
}

.color-presets-row {
  display: flex;
  gap: 8px;
  margin-top: 6px;
}

.color-dot-btn {
  width: 26px;
  height: 26px;
  border-radius: 4px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.1s ease;
}

.color-dot-btn:hover {
  transform: scale(1.15);
}

.color-dot-btn.active {
  border-color: #000000;
  box-shadow: 0 0 0 2px #ffffff;
}

[data-theme="blueprint"] .color-dot-btn.active {
  border-color: #ffffff;
  box-shadow: 0 0 0 2px #000000;
}

/* PDF Canvas Containers */
.pdf-canvas-wrapper {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #070d18;
}

.pdf-canvas-wrapper canvas {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  box-shadow: 0 10px 25px rgba(0,0,0,0.6);
  border-radius: 2px;
}

/* ==========================================================================
   ZOOM & PAN (MULTITOUCH & PORTRAIT PDF) CONTROLS
   ========================================================================== */

.zoom-floating-toolbar {
  position: absolute;
  bottom: 14px;
  right: 14px;
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(13, 27, 51, 0.85);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border-color);
  padding: 4px 8px;
  border-radius: 6px;
  z-index: 100;
  opacity: 0.35;
  transition: opacity 0.2s ease, transform 0.2s ease;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

.zoom-floating-toolbar:hover,
.zoom-floating-toolbar.is-zoomed {
  opacity: 1;
  transform: scale(1.02);
}

.zoom-level-badge {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  color: var(--eng-cyan);
  padding: 2px 6px;
  background: rgba(6, 182, 212, 0.12);
  border-radius: 3px;
  min-width: 42px;
  text-align: center;
}

.zoom-btn {
  background: transparent;
  border: 1px solid transparent;
  color: #f1f5f9;
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 3px 6px;
  border-radius: 3px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
}

.zoom-btn:hover {
  background: rgba(56, 189, 248, 0.2);
  border-color: var(--eng-blue);
  color: #ffffff;
}

.zoom-btn.zoom-fit {
  background: rgba(5, 150, 105, 0.2);
  border: 1px solid var(--eng-green);
  color: #34d399;
  font-weight: 600;
}

.zoom-btn.zoom-fit:hover {
  background: var(--eng-green);
  color: #ffffff;
}

.zoom-btn.zoom-reset {
  background: rgba(217, 119, 6, 0.2);
  border: 1px solid var(--eng-amber);
  color: #fbbf24;
}

.zoom-btn.zoom-reset:hover {
  background: var(--eng-amber);
  color: #ffffff;
}

/* ==========================================================================
   MODAL DIALOGS & PDF EXPORT RANGE SELECTOR (NEO-BRUTALIST STYLING)
   ========================================================================== */

dialog {
  border: 2px solid var(--border-dark);
  border-radius: 6px;
  background: var(--card-bg);
  color: var(--text-primary);
  box-shadow: var(--shadow-elevated);
  padding: 0;
  margin: auto;
  outline: none;
}

dialog::backdrop {
  background: rgba(4, 9, 20, 0.75);
  backdrop-filter: blur(6px);
}

.modal-header {
  background: var(--paper-bg);
  border-bottom: 1.5px solid var(--border-color);
  padding: 14px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

[data-theme="blueprint"] .modal-header {
  background: #091322;
  border-bottom-color: #1e3a5f;
}

.modal-title {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
  letter-spacing: 0.5px;
}

[data-theme="blueprint"] .modal-title {
  color: var(--eng-cyan);
}

.modal-body {
  padding: 20px;
  background: var(--card-bg);
}

.modal-footer {
  background: var(--paper-bg);
  border-top: 1.5px solid var(--border-color);
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
}

[data-theme="blueprint"] .modal-footer {
  background: #091322;
  border-top-color: #1e3a5f;
}

/* Preset range chips */
.hub-preset-btn,
.pres-preset-btn {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 3px;
  background: var(--paper-bg);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.15s ease;
}

.hub-preset-btn:hover,
.pres-preset-btn:hover {
  background: var(--eng-blue-light);
  border-color: var(--eng-blue);
  color: var(--eng-blue-dark);
  transform: translateY(-1px);
}

[data-theme="blueprint"] .hub-preset-btn,
[data-theme="blueprint"] .pres-preset-btn {
  background: #070d18;
  border-color: #1e3a5f;
  color: #94a3b8;
}

[data-theme="blueprint"] .hub-preset-btn:hover,
[data-theme="blueprint"] .pres-preset-btn:hover {
  background: rgba(56, 189, 248, 0.15);
  border-color: var(--eng-blue);
  color: #38bdf8;
}