/* =============================================================================
   unam.css — SaaS-style theme sobre Bulma
   Maestría en Urbanismo · FES Acatlán, UNAM
   Fuente: Inter (Google Fonts)
   ============================================================================= */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root {
  --c-primary: #003893;
  --c-primary-mid: #1a56db;
  --c-primary-light: #eff6ff;
  --c-accent: #d97706;
  --c-accent-light: #fffbeb;
  --c-bg: #f1f5f9;
  --c-surface: #ffffff;
  --c-text: #0f172a;
  --c-muted: #64748b;
  --c-border: #e2e8f0;

  /* Colores por tipo de entregable */
  --c-ensayo: #1d4ed8;
  --c-ensayo-bg: #eff6ff;
  --c-pres: #b45309;
  --c-pres-bg: #fffbeb;
  --c-art: #15803d;
  --c-art-bg: #f0fdf4;
  --c-mapa: #0e7490;
  --c-mapa-bg: #ecfeff;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 16px rgba(15, 23, 42, 0.09);
  --shadow-lg: 0 8px 32px rgba(15, 23, 42, 0.13);
  --radius: 10px;
}

/* ── Base ────────────────────────────────────────────────────────────────── */
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  background: var(--c-bg);
  color: var(--c-text);
  -webkit-font-smoothing: antialiased;
}

/* ── Navbar ──────────────────────────────────────────────────────────────── */
.saas-nav {
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--c-border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
  min-height: 3.5rem;
}

.saas-nav .navbar-brand {
  align-items: center;
}

.brand-logo {
  display: flex !important;
  align-items: center;
  gap: 0.55rem;
  padding: 0.5rem 1rem;
  text-decoration: none;
}

.brand-abbr {
  background: var(--c-primary);
  color: white;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  padding: 0.22rem 0.52rem;
  border-radius: 5px;
}

.brand-name {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--c-text);
}

.gh-link {
  font-size: 0.80rem;
  font-weight: 600;
  color: var(--c-primary) !important;
  border: 1.5px solid var(--c-border);
  border-radius: 6px;
  padding: 0.3rem 0.8rem;
  text-decoration: none;
  transition: border-color 0.15s, background 0.15s;
  margin: auto 1rem auto 0;
}

.gh-link:hover {
  border-color: var(--c-primary);
  background: var(--c-primary-light);
}

/* ── Hero (index) ────────────────────────────────────────────────────────── */
.saas-hero {
  background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-primary-mid) 65%, #2563eb 100%);
  position: relative;
  overflow: hidden;
}

.saas-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%23ffffff' fill-opacity='0.04' fill-rule='evenodd'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/svg%3E");
  pointer-events: none;
}

.saas-hero .hero-body {
  position: relative;
  padding: 4rem 1.5rem 3.5rem;
}

.saas-kicker {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.55);
  margin-bottom: 0.9rem;
}

.saas-hero-title {
  font-size: 2.6rem !important;
  font-weight: 800 !important;
  line-height: 1.15 !important;
  letter-spacing: -0.025em !important;
  color: white !important;
  margin-bottom: 1rem !important;
}

@media (max-width: 768px) {
  .saas-hero-title {
    font-size: 1.9rem !important;
  }
}

.saas-hero-sub {
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.78);
  margin-bottom: 1.8rem;
  font-weight: 400;
}

.saas-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.saas-pill {
  background: rgba(255, 255, 255, 0.10);
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.76rem;
  font-weight: 500;
  padding: 0.26rem 0.75rem;
  border-radius: 999px;
  text-decoration: none;
  transition: background 0.15s, border-color 0.15s;
}

a.saas-pill:hover {
  background: rgba(255, 255, 255, 0.20);
  border-color: rgba(255, 255, 255, 0.40);
  color: white;
}

/* ── Main ────────────────────────────────────────────────────────────────── */
.saas-main {
  padding: 3rem 0 4.5rem;
}

/* ── Semester block ──────────────────────────────────────────────────────── */
.saas-semester {
  margin-bottom: 3.5rem;
}

.saas-semester-header {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  margin-bottom: 0.35rem;
}

.saas-semester-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--c-text);
}

.saas-sem-badge {
  background: var(--c-primary);
  color: white;
  font-size: 0.68rem;
  font-weight: 700;
  padding: 0.18rem 0.6rem;
  border-radius: 999px;
  letter-spacing: 0.05em;
}

.saas-divider {
  height: 1px;
  background: var(--c-border);
  margin: 0.4rem 0 0.5rem;
}

.saas-subject-label {
  font-size: 0.73rem;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--c-muted);
  margin-bottom: 1.4rem;
  padding-left: 2px;
}

/* ── Cards ───────────────────────────────────────────────────────────────── */
.saas-card {
  background: var(--c-surface);
  border-radius: var(--radius);
  border: 1px solid var(--c-border);
  padding: 1.35rem 1.4rem;
  height: 100%;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
}

.saas-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  border-color: #b3c5e8;
}

.saas-type-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.70rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.22rem 0.65rem;
  border-radius: 999px;
  width: fit-content;
}

.saas-type-ensayo {
  background: var(--c-ensayo-bg);
  color: var(--c-ensayo);
}

.saas-type-pres {
  background: var(--c-pres-bg);
  color: var(--c-pres);
}

.saas-type-art {
  background: var(--c-art-bg);
  color: var(--c-art);
}

.saas-type-mapa {
  background: var(--c-mapa-bg);
  color: var(--c-mapa);
}

.saas-card-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--c-text);
  line-height: 1.35;
}

.saas-card-subtitle {
  font-size: 0.82rem;
  color: var(--c-muted);
  font-style: italic;
  margin-top: -0.3rem;
}

.saas-card-meta {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.18rem 0.5rem;
  font-size: 0.77rem;
  border-top: 1px solid var(--c-border);
  border-bottom: 1px solid var(--c-border);
  padding: 0.6rem 0;
}

.saas-card-meta dt {
  color: var(--c-muted);
  white-space: nowrap;
}

.saas-card-meta dd {
  color: var(--c-text);
  font-weight: 500;
}

.saas-card-desc {
  font-size: 0.84rem;
  color: #334155;
  line-height: 1.65;
  flex: 1;
}

.saas-card-actions {
  display: flex;
  gap: 0.5rem;
  margin-top: auto;
  padding-top: 0.3rem;
}

.btn-primary {
  flex: 1;
  background: var(--c-primary);
  color: white !important;
  border: none;
  border-radius: 6px;
  padding: 0.45rem 0.9rem;
  font-size: 0.79rem;
  font-weight: 600;
  text-align: center;
  text-decoration: none;
  transition: background 0.15s;
}

.btn-primary:hover {
  background: #002d7a;
  color: white !important;
}

.btn-ghost {
  background: transparent;
  color: var(--c-primary) !important;
  border: 1.5px solid var(--c-border);
  border-radius: 6px;
  padding: 0.43rem 0.9rem;
  font-size: 0.79rem;
  font-weight: 600;
  text-align: center;
  text-decoration: none;
  transition: border-color 0.15s, background 0.15s;
}

.btn-ghost:hover {
  border-color: var(--c-primary);
  background: var(--c-primary-light);
  color: var(--c-primary) !important;
}

/* ── Footer ──────────────────────────────────────────────────────────────── */
.saas-footer {
  background: var(--c-surface);
  border-top: 1px solid var(--c-border);
  padding: 1.5rem 0;
  text-align: center;
  font-size: 0.81rem;
  color: var(--c-muted);
}

.saas-footer a {
  color: var(--c-primary);
  text-decoration: none;
}

.saas-footer a:hover {
  text-decoration: underline;
}

/* ═══════════════════════════════════════════════════════════════════════════
   PÁGINAS DE DETALLE
   ═══════════════════════════════════════════════════════════════════════════ */

/* ── Hero detalle ────────────────────────────────────────────────────────── */
.detalle-hero {
  background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-primary-mid) 100%);
  padding: 2.2rem 0 1.9rem;
  position: relative;
  overflow: hidden;
}

.detalle-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%23ffffff' fill-opacity='0.04' fill-rule='evenodd'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/svg%3E");
  pointer-events: none;
}

.detalle-hero .container {
  position: relative;
}

.detalle-hero h1 {
  color: white !important;
  font-size: 1.75rem !important;
  font-weight: 800 !important;
  letter-spacing: -0.015em;
  line-height: 1.2;
  margin-bottom: 0.4rem !important;
}

.detalle-hero p.subtitle-hero {
  color: rgba(255, 255, 255, 0.72);
  font-style: italic;
  font-size: 0.97rem;
  margin-top: 0.3rem;
}

/* ── Breadcrumb ──────────────────────────────────────────────────────────── */
.saas-breadcrumb {
  margin-bottom: 2rem;
}

.saas-breadcrumb ul {
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--c-border);
}

.saas-breadcrumb li,
.saas-breadcrumb a {
  font-size: 0.81rem;
  color: var(--c-muted);
}

.saas-breadcrumb a {
  color: var(--c-primary);
  text-decoration: none;
}

.saas-breadcrumb a:hover {
  text-decoration: underline;
}

.saas-breadcrumb li+li::before {
  color: var(--c-border) !important;
}

.saas-breadcrumb li.is-active a {
  color: var(--c-muted);
  cursor: default;
}

/* ── Sidebar ─────────────────────────────────────────────────────────────── */
.saas-ficha {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 4.5rem;
  font-size: 0.83rem;
}

.saas-ficha-head {
  background: var(--c-primary);
  padding: 0.85rem 1.15rem;
}

.saas-ficha-head p {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.65);
  margin: 0;
}

.saas-ficha-body {
  padding: 1.1rem 1.15rem;
}

.saas-ficha dl {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.45rem 0.6rem;
}

.saas-ficha dt {
  color: var(--c-muted);
  white-space: nowrap;
}

.saas-ficha dd {
  color: var(--c-text);
  font-weight: 500;
  word-break: break-word;
}

.saas-ficha-section {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--c-border);
}

.saas-ficha-section-label {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-muted);
  margin-bottom: 0.7rem;
}

.btn-download {
  display: block;
  width: 100%;
  text-align: center;
  background: var(--c-primary);
  color: white !important;
  border: 1.5px solid var(--c-primary);
  border-radius: 6px;
  padding: 0.52rem;
  font-size: 0.79rem;
  font-weight: 600;
  text-decoration: none;
  margin-bottom: 0.5rem;
  transition: background 0.15s, border-color 0.15s;
}

.btn-download:hover {
  background: #002d7a;
  border-color: #002d7a;
  color: white !important;
}

.release-tag {
  font-family: 'Courier New', monospace;
  font-size: 0.71rem;
  background: var(--c-bg);
  color: var(--c-muted);
  border: 1px solid var(--c-border);
  padding: 0.14rem 0.45rem;
  border-radius: 4px;
  display: inline-block;
}

/* ── Artículo ────────────────────────────────────────────────────────────── */
.detalle-texto {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 2rem 2.2rem;
  box-shadow: var(--shadow-sm);
}

.detalle-texto h2 {
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--c-primary);
  margin-top: 1.8rem;
  margin-bottom: 0.65rem;
  padding-bottom: 0.4rem;
  border-bottom: 2px solid var(--c-primary-light);
  font-family: 'Inter', sans-serif;
}

.detalle-texto h2:first-child {
  margin-top: 0;
}

.detalle-texto p {
  font-size: 0.93rem;
  line-height: 1.78;
  color: #1e293b;
  margin-bottom: 0.85rem;
}

.detalle-texto ul {
  margin: 0.3rem 0 0.9rem 1.3rem;
  font-size: 0.91rem;
  line-height: 1.75;
  color: #1e293b;
}

.detalle-texto li {
  margin-bottom: 0.4rem;
}