/* ═══════════════════════════════════════════════
   TFG Aralar · GitHub Pages · style.css
   Diseño limpio, académico, legible
   Paleta: azul corporativo UPV/EHU + acentos
   ═══════════════════════════════════════════════ */

:root {
  --azul: #1F4E79;
  --azul-claro: #2E75B6;
  --azul-bg: #D9E2F3;
  --rojo: #8B1A1A;
  --rojo-bg: #F8D7DA;
  --verde: #276A3A;
  --verde-bg: #E2EFDA;
  --amarillo: #BF8F00;
  --amarillo-bg: #FFF7E0;
  --morado: #5B2A86;
  --morado-bg: #E8DEF2;
  --gris: #595959;
  --gris-claro: #F2F2F2;
  --bg: #FAFBFD;
  --texto: #1a1a1a;
  --max-w: 1200px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
               "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  color: var(--texto);
  background: var(--bg);
}

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

/* ═══════════════════ HEADER ═══════════════════ */

header {
  background: linear-gradient(135deg, var(--azul) 0%, var(--azul-claro) 100%);
  color: white;
  padding: 60px 0 0 0;
}

header .brand {
  text-align: center;
  margin-bottom: 32px;
}

header h1 {
  font-size: 3em;
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: 8px;
}

header .subtitle {
  font-size: 1.25em;
  opacity: 0.95;
  font-weight: 300;
  max-width: 800px;
  margin: 0 auto 12px;
}

header .meta {
  font-size: 0.9em;
  opacity: 0.8;
  font-style: italic;
}

nav {
  display: flex;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
  background: rgba(0,0,0,0.15);
  padding: 16px 24px;
  margin-top: 32px;
  border-radius: 12px 12px 0 0;
}

nav a {
  color: white;
  text-decoration: none;
  padding: 8px 18px;
  border-radius: 6px;
  font-weight: 500;
  font-size: 0.95em;
  transition: background 0.2s;
}

nav a:hover {
  background: rgba(255,255,255,0.15);
}

/* ═══════════════════ SECTIONS ═══════════════════ */

section {
  padding: 80px 0;
}

section.alt {
  background: white;
  border-top: 1px solid #e5e7eb;
  border-bottom: 1px solid #e5e7eb;
}

section h2 {
  font-size: 2.2em;
  color: var(--azul);
  margin-bottom: 24px;
  font-weight: 700;
  letter-spacing: -0.3px;
  border-bottom: 4px solid var(--azul-claro);
  padding-bottom: 12px;
  display: inline-block;
}

section .intro {
  font-size: 1.1em;
  color: var(--gris);
  max-width: 850px;
  margin-bottom: 32px;
  line-height: 1.7;
}

/* ═══════════════════ HERO ═══════════════════ */

.hero .lead {
  font-size: 1.25em;
  color: var(--azul);
  font-weight: 500;
  line-height: 1.6;
  margin-bottom: 20px;
}

.hero p {
  margin-bottom: 18px;
  font-size: 1.05em;
}

.hero-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 48px;
  align-items: start;
}

.stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.stat {
  background: white;
  padding: 24px;
  border-radius: 10px;
  text-align: center;
  box-shadow: 0 2px 8px rgba(31,78,121,0.08);
  border-top: 4px solid var(--azul-claro);
}

.stat-num {
  font-size: 2.6em;
  font-weight: 700;
  color: var(--azul);
  line-height: 1;
  margin-bottom: 6px;
}

.stat-label {
  font-size: 0.85em;
  color: var(--gris);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
}

/* ═══════════════════ STRATEGIES ═══════════════════ */

.strategies {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin: 32px 0;
}

.strategy {
  padding: 24px;
  border-radius: 10px;
  border-left: 6px solid;
}

.strategy h3 {
  font-size: 1.3em;
  margin-bottom: 12px;
  font-weight: 700;
}

.strategy p {
  margin-bottom: 14px;
  color: #333;
  line-height: 1.6;
}

.strategy .formula {
  background: rgba(0,0,0,0.04);
  padding: 10px 14px;
  border-radius: 6px;
  font-family: "Consolas", "Monaco", monospace;
  font-size: 0.92em;
  color: var(--texto);
  font-weight: 600;
}

.strategy-A { background: var(--verde-bg); border-color: var(--verde); }
.strategy-A h3 { color: var(--verde); }
.strategy-B { background: var(--amarillo-bg); border-color: var(--amarillo); }
.strategy-B h3 { color: var(--amarillo); }
.strategy-C { background: var(--morado-bg); border-color: var(--morado); }
.strategy-C h3 { color: var(--morado); }
.strategy-D { background: var(--rojo-bg); border-color: var(--rojo); }
.strategy-D h3 { color: var(--rojo); }

/* ═══════════════════ FIGURES ═══════════════════ */

.figure {
  margin: 32px auto;
  text-align: center;
  max-width: 1000px;
}

.figure img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.figure .caption {
  margin-top: 14px;
  color: var(--gris);
  font-style: italic;
  font-size: 0.95em;
  line-height: 1.5;
}

/* ═══════════════════ MAP GALLERY ═══════════════════ */

.map-controls {
  display: flex;
  gap: 24px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.control {
  flex: 1;
  min-width: 250px;
}

.control label {
  display: block;
  font-weight: 600;
  color: var(--azul);
  margin-bottom: 8px;
  font-size: 0.95em;
}

.control select {
  width: 100%;
  padding: 12px 14px;
  font-size: 1em;
  border: 2px solid #d1d5db;
  border-radius: 8px;
  background: white;
  color: var(--texto);
  cursor: pointer;
  transition: border-color 0.2s;
}

.control select:focus {
  outline: none;
  border-color: var(--azul-claro);
}

.control select option.crisis { color: var(--rojo); font-weight: 600; }
.control select option.relax { color: var(--verde); font-weight: 600; }

.map-display {
  background: white;
  padding: 24px;
  border-radius: 10px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
  text-align: center;
}

.map-display img {
  max-width: 100%;
  height: auto;
  border-radius: 6px;
  background: #f3f4f6;
  min-height: 300px;
}

.map-display .caption {
  margin-top: 16px;
  color: var(--gris);
  font-style: italic;
  font-size: 0.95em;
}

.note {
  background: var(--amarillo-bg);
  border-left: 4px solid var(--amarillo);
  padding: 14px 18px;
  margin-top: 20px;
  border-radius: 4px;
  font-size: 0.9em;
  color: #6b5710;
}

/* ═══════════════════ CHART GRID ═══════════════════ */

.chart-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-top: 32px;
}

.chart {
  background: white;
  padding: 24px;
  border-radius: 10px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}

.chart img {
  width: 100%;
  height: auto;
  border-radius: 6px;
  margin-bottom: 16px;
}

.chart h3 {
  color: var(--azul);
  font-size: 1.15em;
  margin-bottom: 8px;
}

.chart p {
  color: var(--gris);
  font-size: 0.95em;
  line-height: 1.6;
}

/* ═══════════════════ DOCUMENTS ═══════════════════ */

.docs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 32px;
}

.doc {
  display: block;
  background: white;
  padding: 28px;
  border-radius: 10px;
  text-decoration: none;
  color: inherit;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
  border-top: 4px solid var(--azul-claro);
  transition: transform 0.2s, box-shadow 0.2s;
}

.doc:hover {
  transform: translateY(-4px);
  box-shadow: 0 6px 20px rgba(31,78,121,0.15);
}

.doc-icon {
  font-size: 2.5em;
  margin-bottom: 12px;
}

.doc h3 {
  color: var(--azul);
  font-size: 1.2em;
  margin-bottom: 10px;
}

.doc p {
  color: var(--gris);
  font-size: 0.9em;
  line-height: 1.6;
  margin-bottom: 14px;
}

.doc-format {
  color: var(--azul-claro);
  font-size: 0.85em;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ═══════════════════ REPOSITORY ═══════════════════ */

.repo-card {
  background: var(--azul-bg);
  padding: 32px;
  border-radius: 12px;
  margin: 24px 0;
}

.repo-card h3 {
  color: var(--azul);
  font-family: "Consolas", "Monaco", monospace;
  font-size: 1.3em;
  margin-bottom: 16px;
}

.repo-list {
  list-style: none;
  margin-bottom: 24px;
}

.repo-list li {
  padding: 8px 0;
  border-bottom: 1px solid rgba(31,78,121,0.15);
  font-size: 0.95em;
}

.repo-list li:last-child { border-bottom: none; }

.repo-list code {
  background: white;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.9em;
  color: var(--azul);
  font-weight: 600;
  margin-right: 8px;
}

.btn {
  display: inline-block;
  background: var(--azul);
  color: white;
  padding: 12px 24px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  transition: background 0.2s;
}

.btn:hover {
  background: var(--azul-claro);
}

.cite-box {
  background: var(--gris-claro);
  padding: 24px;
  border-radius: 8px;
  margin-top: 24px;
  border-left: 4px solid var(--azul);
}

.cite-box h3 {
  color: var(--azul);
  font-size: 1.1em;
  margin-bottom: 12px;
}

.cite-box pre {
  font-family: "Consolas", "Monaco", monospace;
  font-size: 0.85em;
  background: white;
  padding: 14px;
  border-radius: 6px;
  overflow-x: auto;
  white-space: pre-wrap;
  line-height: 1.5;
  color: var(--texto);
}

/* ═══════════════════ FOOTER ═══════════════════ */

footer {
  background: var(--azul);
  color: white;
  padding: 60px 0 24px 0;
  margin-top: 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

footer h4 {
  font-size: 1.1em;
  margin-bottom: 14px;
  font-weight: 600;
}

footer p {
  font-size: 0.92em;
  opacity: 0.9;
  line-height: 1.6;
}

footer a {
  color: white;
  text-decoration: underline;
}

.footer-list {
  list-style: none;
}

.footer-list li {
  font-size: 0.88em;
  opacity: 0.85;
  padding: 4px 0;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.2);
  padding-top: 20px;
  text-align: center;
  font-size: 0.85em;
  opacity: 0.7;
}

/* ═══════════════════ RESPONSIVE ═══════════════════ */

@media (max-width: 768px) {
  header { padding: 40px 0 0 0; }
  header h1 { font-size: 2em; }
  header .subtitle { font-size: 1.05em; }

  nav { padding: 12px; gap: 4px; }
  nav a { padding: 6px 12px; font-size: 0.85em; }

  section { padding: 50px 0; }
  section h2 { font-size: 1.7em; }

  .hero-grid,
  .strategies,
  .chart-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .stats { grid-template-columns: 1fr 1fr; }

  .map-controls { flex-direction: column; }
}

/* === Estado del listado dinámico de documentos === */
.docs-status {
  grid-column: 1 / -1;
  background: var(--gris-claro);
  border-left: 4px solid var(--azul-claro);
  padding: 16px 20px;
  border-radius: 6px;
  color: var(--gris);
  font-size: 0.95em;
  margin: 0;
}