/* ====================================================
   UCBVault — Estilos principales
   Paleta: Azul UCB #003087 | Dorado #FFD700 | Blanco #FFFFFF
   ==================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

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

:root {
  --ucb-blue:    #003087;
  --ucb-blue-dk: #001f5e;
  --ucb-blue-lt: #004db3;
  --ucb-gold:    #FFD700;
  --ucb-gold-dk: #d4af00;
  --white:       #ffffff;
  --gray-50:     #f8f9fa;
  --gray-100:    #f0f2f5;
  --gray-200:    #e2e8f0;
  --gray-400:    #94a3b8;
  --gray-600:    #475569;
  --gray-800:    #1e293b;
  --shadow-sm:   0 1px 3px rgba(0,0,0,.10), 0 1px 2px rgba(0,0,0,.06);
  --shadow-md:   0 4px 6px rgba(0,0,0,.10), 0 2px 4px rgba(0,0,0,.06);
  --shadow-lg:   0 10px 24px rgba(0,0,0,.12);
  --radius:      10px;
  --radius-sm:   6px;
  --transition:  .2s ease;
}

body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--gray-50);
  color: var(--gray-800);
  min-height: 100vh;
  line-height: 1.6;
}

/* ── Header ── */
.site-header {
  background: var(--ucb-blue);
  color: var(--white);
  padding: 0 1.5rem;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-md);
}

.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  height: 64px;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: .6rem;
  text-decoration: none;
  color: var(--white);
}

.logo-icon {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
}

.logo-text {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -.5px;
}

.logo-text span {
  color: var(--ucb-gold);
}

.header-subtitle {
  font-size: .75rem;
  opacity: .75;
  display: none;
}

@media (min-width: 500px) {
  .header-subtitle { display: block; }
}

/* ── Main layout ── */
.main-content {
  max-width: 1280px;
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
}

/* ── Hero ── */
.hero {
  text-align: center;
  padding: 2.5rem 1rem 2rem;
}

.hero h1 {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 700;
  color: var(--ucb-blue);
  margin-bottom: .5rem;
}

.hero p {
  color: var(--gray-600);
  font-size: 1rem;
  max-width: 520px;
  margin: 0 auto 1.5rem;
}

/* ── Search bar ── */
.search-wrapper {
  max-width: 560px;
  margin: 0 auto 2.5rem;
  position: relative;
}

.search-input {
  width: 100%;
  padding: .75rem 1rem .75rem 3rem;
  border: 2px solid var(--gray-200);
  border-radius: 50px;
  font-size: .95rem;
  font-family: inherit;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
  background: var(--white);
}

.search-input:focus {
  border-color: var(--ucb-blue);
  box-shadow: 0 0 0 3px rgba(0,48,135,.15);
}

.search-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--gray-400);
  pointer-events: none;
}

.search-results {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  margin-top: .5rem;
  max-height: 360px;
  overflow-y: auto;
  display: none;
  position: absolute;
  width: 100%;
  z-index: 200;
}

.search-results.active { display: block; }

.search-result-item {
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: .75rem 1rem;
  cursor: pointer;
  border-bottom: 1px solid var(--gray-100);
  text-decoration: none;
  color: inherit;
  transition: background var(--transition);
}

.search-result-item:last-child { border-bottom: none; }
.search-result-item:hover { background: var(--gray-50); }

.search-result-codigo {
  font-size: .75rem;
  font-weight: 600;
  background: var(--ucb-blue);
  color: var(--white);
  padding: .2rem .5rem;
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

.search-result-info { flex: 1; min-width: 0; }
.search-result-nombre { font-size: .9rem; font-weight: 500; }
.search-result-meta { font-size: .75rem; color: var(--gray-400); }

.search-no-results {
  padding: 1rem;
  text-align: center;
  color: var(--gray-400);
  font-size: .9rem;
}

/* ── Section titles ── */
.section-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--gray-800);
  margin-bottom: 1.25rem;
  padding-bottom: .5rem;
  border-bottom: 2px solid var(--gray-200);
}

/* ── Career cards ── */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}

.career-card {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-200);
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.career-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: var(--ucb-blue);
}

.career-card-header {
  background: var(--ucb-blue);
  color: var(--white);
  padding: 1.25rem 1.25rem .75rem;
}

.career-card-icon {
  margin-bottom: .5rem;
  opacity: .9;
}

.career-card-name {
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.3;
}

.career-card-body {
  padding: 1rem 1.25rem 1.25rem;
  flex: 1;
}

.career-card-malla {
  display: inline-block;
  font-size: .75rem;
  font-weight: 600;
  background: var(--ucb-gold);
  color: var(--gray-800);
  padding: .2rem .6rem;
  border-radius: 50px;
  margin-bottom: .75rem;
}

.career-card-stats {
  display: flex;
  gap: 1.5rem;
}

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

.stat-value {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--ucb-blue);
}

.stat-label {
  font-size: .7rem;
  color: var(--gray-400);
  text-transform: uppercase;
  letter-spacing: .05em;
}

.career-card-arrow {
  padding: .6rem 1.25rem;
  background: var(--gray-50);
  border-top: 1px solid var(--gray-100);
  font-size: .8rem;
  color: var(--ucb-blue-lt);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: .4rem;
}

/* ── Loading / Error states ── */
.loading-state, .error-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--gray-400);
}

.error-state { color: #dc2626; }

.spinner {
  width: 36px;
  height: 36px;
  border: 3px solid var(--gray-200);
  border-top-color: var(--ucb-blue);
  border-radius: 50%;
  animation: spin .8s linear infinite;
  margin: 0 auto 1rem;
}

@keyframes spin { to { transform: rotate(360deg); } }


/* ── Header actions ── */
.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.btn-subir {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.25rem;
  background: var(--ucb-gold);
  color: var(--ucb-blue);
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.85rem;
  transition: all var(--transition);
  border: none;
}

.btn-subir:hover {
  background: var(--ucb-gold-dk);
  transform: translateY(-2px);
}

/* ── User info section ── */
.user-info {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding-left: 1rem;
  border-left: 1px solid rgba(255, 255, 255, 0.2);
}

.user-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 2px solid var(--ucb-gold);
  object-fit: cover;
}

.user-name {
  color: var(--white);
  font-size: 0.9rem;
  font-weight: 500;
  max-width: 120px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.btn-logout {
  padding: 0.5rem 1rem;
  background: var(--ucb-gold);
  color: var(--ucb-blue);
  border: none;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all var(--transition);
  font-family: inherit;
}

.btn-logout:hover {
  background: var(--ucb-gold-dk);
  transform: translateY(-2px);
}

.btn-logout:active {
  transform: translateY(0);
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .user-name {
    display: none;
  }
  
  .header-actions {
    gap: 0.5rem;
  }
  
  .user-info {
    padding-left: 0.5rem;
  }
}



/* ================================================================
   MALLA PAGE
   ================================================================ */

/* ── Back button ── */
.btn-back {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  color: var(--ucb-blue);
  text-decoration: none;
  font-size: .9rem;
  font-weight: 500;
  margin-bottom: 1.25rem;
  padding: .4rem .75rem;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}

.btn-back:hover { background: var(--gray-100); }

/* ── Page title ── */
.page-title {
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--ucb-blue);
  margin-bottom: .25rem;
}

.page-meta {
  color: var(--gray-400);
  font-size: .875rem;
  margin-bottom: 1.5rem;
}

/* ── Line filters ── */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-bottom: 1.5rem;
}

.filter-chip {
  padding: .35rem .85rem;
  border-radius: 50px;
  border: 2px solid var(--gray-200);
  background: var(--white);
  font-size: .8rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  color: var(--gray-600);
  white-space: nowrap;
}

.filter-chip.active,
.filter-chip:hover {
  border-color: var(--ucb-blue);
  background: var(--ucb-blue);
  color: var(--white);
}

.filter-chip[data-linea="Ciencias Básicas"].active   { background: #1d4ed8; border-color: #1d4ed8; }
.filter-chip[data-linea="Ingeniería del Software"].active { background: #7c3aed; border-color: #7c3aed; }
.filter-chip[data-linea="Biomédica"].active          { background: #0891b2; border-color: #0891b2; }
.filter-chip[data-linea="Electrónica"].active        { background: #c2410c; border-color: #c2410c; }
.filter-chip[data-linea="Genéricas"].active          { background: #15803d; border-color: #15803d; }
.filter-chip[data-linea="Optativas"].active          { background: #92400e; border-color: #92400e; }
.filter-chip[data-linea="Sistemas de Información"].active { background: #6d28d9; border-color: #6d28d9; }
.filter-chip[data-linea="Inteligencia Artificial"].active { background: #b45309; border-color: #b45309; }
.filter-chip[data-linea="Hardware/SO/Redes"].active  { background: #374151; border-color: #374151; }
.filter-chip[data-linea="Mecánica"].active           { background: #9f1239; border-color: #9f1239; }
.filter-chip[data-linea="Sistemas Electrónicos"].active { background: #1e40af; border-color: #1e40af; }
.filter-chip[data-linea="Sistemas Computacionales"].active { background: #065f46; border-color: #065f46; }
.filter-chip[data-linea="Automatización y Control"].active { background: #7f1d1d; border-color: #7f1d1d; }
.filter-chip[data-linea="Formación Genérica"].active { background: #14532d; border-color: #14532d; }

/* ── Semester grid ── */
.grid-scroll-wrapper {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  padding-bottom: .5rem;
  margin-bottom: 2rem;
}

.semester-grid {
  display: flex;
  gap: 1rem;
  min-width: max-content;
  align-items: flex-start;
}

.semester-column {
  width: 180px;
  flex-shrink: 0;
}

.semester-header {
  background: var(--ucb-blue);
  color: var(--white);
  text-align: center;
  padding: .5rem .5rem;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  font-size: .8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .05em;
}

.semester-body {
  display: flex;
  flex-direction: column;
  gap: .5rem;
  padding: .5rem 0;
}

/* ── Subject cards in grid ── */
.subject-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  padding: .6rem .7rem;
  cursor: pointer;
  transition: all var(--transition);
  border-left: 4px solid var(--gray-200);
  box-shadow: var(--shadow-sm);
  position: relative;
}

.subject-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
  border-color: var(--ucb-blue);
}

.subject-card.dimmed {
  opacity: .25;
  pointer-events: none;
}

.subject-card-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding-right: 1.5rem;
}

.subject-card .s-code {
  font-size: .68rem;
  font-weight: 700;
  color: var(--gray-400);
  text-transform: uppercase;
  letter-spacing: .05em;
  margin-bottom: .15rem;
}

.subject-card .s-name {
  font-size: .78rem;
  font-weight: 600;
  color: var(--gray-800);
  line-height: 1.3;
}

/* ── Subject card checkbox bubble ── */
.subject-card-check {
  position: absolute;
  top: -10px;
  right: -10px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: #e0e7ff;
  border: 2.5px solid #6366f1;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition);
  flex-shrink: 0;
  box-shadow: 0 2px 4px rgba(99, 102, 241, 0.2);
}

.subject-card-check:hover {
  background: #c7d2fe;
  transform: scale(1.15);
  box-shadow: 0 4px 8px rgba(99, 102, 241, 0.3);
}

.subject-card-check.active {
  background: #10b981;
  border-color: #059669;
  box-shadow: 0 2px 4px rgba(16, 185, 129, 0.3);
}

.subject-card-check.active:hover {
  background: #059669;
  transform: scale(1.15);
  box-shadow: 0 4px 8px rgba(16, 185, 129, 0.4);
}

.subject-card-check input[type="checkbox"] {
  width: 18px;
  height: 18px;
  cursor: pointer;
  accent-color: white;
  pointer-events: none;
}

.subject-card-check.active input[type="checkbox"] {
  accent-color: white;
}

/* Line colors for left border */
.line-ciencias-basicas    { border-left-color: #1d4ed8; }
.line-software            { border-left-color: #7c3aed; }
.line-biomedica           { border-left-color: #0891b2; }
.line-electronica         { border-left-color: #c2410c; }
.line-genericas           { border-left-color: #15803d; }
.line-optativas           { border-left-color: #92400e; }
.line-sistemas-info       { border-left-color: #6d28d9; }
.line-ia                  { border-left-color: #b45309; }
.line-hardware            { border-left-color: #374151; }
.line-mecanica            { border-left-color: #9f1239; }
.line-electronica-sis     { border-left-color: #1e40af; }
.line-computacionales     { border-left-color: #065f46; }
.line-automatizacion      { border-left-color: #7f1d1d; }
.line-formacion-generica  { border-left-color: #14532d; }

/* ── Badge ── */
.badge {
  display: inline-block;
  padding: .15rem .5rem;
  border-radius: 50px;
  font-size: .7rem;
  font-weight: 600;
  color: var(--white);
  background: var(--gray-400);
}

/* Badge colors mirroring chip active colors */
.badge-Ciencias\ Básicas    { background: #1d4ed8; }
.badge-Ingeniería\ del\ Software { background: #7c3aed; }
.badge-Biomédica             { background: #0891b2; }
.badge-Electrónica           { background: #c2410c; }
.badge-Genéricas             { background: #15803d; }
.badge-Optativas             { background: #92400e; }
.badge-Sistemas\ de\ Información { background: #6d28d9; }
.badge-Inteligencia\ Artificial { background: #b45309; }
.badge-Hardware\/SO\/Redes   { background: #374151; }
.badge-Mecánica              { background: #9f1239; }
.badge-Sistemas\ Electrónicos { background: #1e40af; }
.badge-Sistemas\ Computacionales { background: #065f46; }
.badge-Automatización\ y\ Control { background: #7f1d1d; }
.badge-Formación\ Genérica   { background: #14532d; }

/* ================================================================
   MODAL
   ================================================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.55);
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity .25s ease, visibility .25s ease;
}

.modal-overlay.open {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  overflow-y: auto;
  transform: translateY(20px) scale(.97);
  transition: transform .25s ease;
}

.modal-overlay.open .modal {
  transform: translateY(0) scale(1);
}

.modal-header {
  background: var(--ucb-blue);
  color: var(--white);
  padding: 1.25rem 1.5rem;
  border-radius: var(--radius) var(--radius) 0 0;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.modal-code {
  font-size: .8rem;
  font-weight: 600;
  opacity: .75;
  margin-bottom: .25rem;
}

.modal-name {
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1.3;
}

.modal-close {
  background: rgba(255,255,255,.15);
  border: none;
  color: var(--white);
  width: 30px;
  height: 30px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1.1rem;
  transition: background var(--transition);
}

.modal-close:hover { background: rgba(255,255,255,.3); }

.modal-body {
  padding: 1.25rem 1.5rem;
}

.modal-section {
  margin-bottom: 1.25rem;
}

.modal-section:last-child { margin-bottom: 0; }

.modal-section-title {
  font-size: .75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--gray-400);
  margin-bottom: .5rem;
}

.modal-info-row {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: .75rem;
}

.modal-info-item {
  display: flex;
  flex-direction: column;
  gap: .1rem;
}

.modal-info-label {
  font-size: .7rem;
  color: var(--gray-400);
  text-transform: uppercase;
  letter-spacing: .05em;
}

.modal-info-value {
  font-size: .95rem;
  font-weight: 600;
  color: var(--gray-800);
}

.prereq-list, .unlock-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: .4rem;
}

.prereq-item, .unlock-item {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-size: .875rem;
}

.prereq-item .p-code, .unlock-item .u-code {
  font-size: .72rem;
  font-weight: 700;
  background: var(--gray-100);
  color: var(--gray-600);
  padding: .15rem .45rem;
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

.no-items {
  font-size: .875rem;
  color: var(--gray-400);
  font-style: italic;
}

/* ── Ver material button (modal) ── */
.btn-ver-material {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .55rem 1.1rem;
  background: var(--ucb-gold);
  color: var(--gray-800);
  border-radius: var(--radius-sm);
  font-size: .875rem;
  font-weight: 600;
  text-decoration: none;
  transition: background var(--transition), transform var(--transition);
}

.btn-ver-material:hover {
  background: var(--ucb-gold-dk);
  transform: translateY(-1px);
}

/* ── Action buttons ── */
.action-buttons {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.btn-lock, .btn-pdf {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .65rem 1.25rem;
  border: none;
  border-radius: var(--radius-sm);
  font-size: .875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  font-family: inherit;
}

.btn-lock {
  background: var(--ucb-blue);
  color: var(--white);
}

.btn-lock:hover {
  background: var(--ucb-blue-dk);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-lock.locked {
  background: #ef4444;
  opacity: 0.8;
}

.btn-lock.locked:hover {
  background: #dc2626;
}

.btn-pdf {
  background: var(--ucb-gold);
  color: var(--gray-800);
}

.btn-pdf:hover {
  background: var(--ucb-gold-dk);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

.btn-lock svg, .btn-pdf svg {
  flex-shrink: 0;
}

/* ── Botón de dependencias ── */
.btn-dependencies {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .65rem 1.25rem;
  background: linear-gradient(135deg, #10b981, #059669);
  color: var(--white);
  border: none;
  border-radius: var(--radius-sm);
  font-size: .875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  font-family: inherit;
}

.btn-dependencies:hover {
  background: linear-gradient(135deg, #059669, #047857);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-dependencies.active {
  background: linear-gradient(135deg, #059669, #047857);
  box-shadow: 0 0 12px rgba(16, 185, 129, 0.5);
}

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

/* Canvas de dependencias */
#dependencies-canvas {
  pointer-events: none;
}


/* ── Responsive ── */
@media (max-width: 640px) {
  .main-content { padding: 1.25rem 1rem 3rem; }
  .hero { padding: 1.5rem .5rem 1rem; }
}