/* ═══════════════════════════════════════════════════════════
   PLF 2026 — Dashboard Interactif (D3.js)
   Palette: Navy #0F2850 · Slate #1e293b · Accent #2563eb
   ═══════════════════════════════════════════════════════════ */

:root {
  --navy: #0F2850;
  --navy-light: #1a3a6b;
  --navy-dark: #091b38;
  --accent: #2563eb;
  --accent-light: #3b82f6;
  --gold: #d4a74a;
  --gold-light: #f5deb3;
  --bg: #fafbfd;
  --bg-warm: #f8f6f1;
  --text: #1e293b;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --card-bg: #ffffff;
  --sidebar-w: 280px;
  --font-serif: 'Playfair Display', Georgia, serif;
  --font-sans: 'Inter', -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 20px;
}

body {
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  overflow-x: hidden;
}

/* ═══ SIDEBAR ═══ */
#sidebar {
  position: fixed;
  top: 0; left: 0;
  width: var(--sidebar-w);
  height: 100vh;
  background: linear-gradient(180deg, var(--navy) 0%, var(--navy-dark) 100%);
  color: white;
  display: flex;
  flex-direction: column;
  z-index: 1000;
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 4px 0 25px rgba(0,0,0,0.15);
}

.sidebar-header {
  padding: 2rem 1.5rem 1.5rem;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  text-align: center;
}

.sidebar-logo {
  display: inline-block;
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: 1.6rem;
  color: var(--gold);
  border: 2px solid var(--gold);
  padding: 0.3rem 0.8rem;
  letter-spacing: 3px;
  margin-bottom: 0.6rem;
}

.sidebar-header h2 {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 1px;
}

.sidebar-sub {
  font-size: 0.7rem;
  opacity: 0.5;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-top: 0.3rem;
}

.nav-links {
  list-style: none;
  padding: 1rem 0;
  flex: 1;
  overflow-y: auto;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 1.5rem;
  color: rgba(255,255,255,0.65);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  transition: all 0.25s ease;
  border-left: 3px solid transparent;
  letter-spacing: 0.3px;
}

.nav-link:hover {
  color: white;
  background: rgba(255,255,255,0.06);
  border-left-color: rgba(255,255,255,0.3);
}

.nav-link.active {
  color: var(--gold);
  background: rgba(212,167,74,0.08);
  border-left-color: var(--gold);
  font-weight: 600;
}

.nav-icon {
  font-size: 1rem;
  width: 1.2rem;
  text-align: center;
}

.sidebar-footer {
  padding: 1.2rem 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 0.72rem;
  opacity: 0.5;
  text-align: center;
  line-height: 1.8;
}

.sidebar-module { font-style: italic; }
.sidebar-year { letter-spacing: 2px; }

/* ═══ SIDEBAR TOGGLE ═══ */
#sidebar-toggle {
  display: none;
  position: fixed;
  top: 1rem; left: 1rem;
  z-index: 1100;
  background: var(--navy);
  color: white;
  border: none;
  width: 44px; height: 44px;
  border-radius: 10px;
  font-size: 1.3rem;
  cursor: pointer;
  box-shadow: 0 4px 15px rgba(0,0,0,0.2);
  transition: all 0.3s;
}

#sidebar-toggle:hover {
  background: var(--navy-light);
  transform: scale(1.05);
}

/* ═══ MAIN CONTENT ═══ */
#content {
  margin-left: var(--sidebar-w);
  min-height: 100vh;
}

/* ═══ HERO ═══ */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    linear-gradient(135deg, var(--navy) 0%, var(--navy-dark) 60%, #0c1f3d 100%);
  color: white;
  padding: 3rem;
  position: relative;
  overflow: hidden;
}

#hero::before {
  content: '';
  position: absolute;
  top: -50%; right: -30%;
  width: 80%; height: 200%;
  background: radial-gradient(circle, rgba(37,99,235,0.08) 0%, transparent 70%);
  animation: heroGlow 8s ease-in-out infinite alternate;
}

@keyframes heroGlow {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(-5%, 5%) scale(1.1); }
}

.hero-content {
  max-width: 750px;
  text-align: center;
  position: relative;
  z-index: 1;
}

.hero-kicker {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: fadeUp 0.8s ease forwards 0.2s;
}

.hero-title {
  font-family: var(--font-serif);
  margin-bottom: 1.5rem;
}

.hero-line1 {
  display: block;
  font-size: 2.8rem;
  font-weight: 700;
  line-height: 1.2;
  opacity: 0;
  animation: fadeUp 0.8s ease forwards 0.4s;
}

.hero-line2 {
  display: block;
  font-size: 2.2rem;
  font-weight: 400;
  color: rgba(255,255,255,0.7);
  line-height: 1.3;
  opacity: 0;
  animation: fadeUp 0.8s ease forwards 0.6s;
}

.hero-rule {
  width: 80px; height: 3px;
  background: var(--gold);
  margin: 1.5rem auto;
  opacity: 0;
  animation: fadeUp 0.8s ease forwards 0.7s;
}

.hero-lead {
  font-size: 1.05rem;
  line-height: 1.8;
  color: rgba(255,255,255,0.7);
  max-width: 600px;
  margin: 0 auto 2.5rem;
  opacity: 0;
  animation: fadeUp 0.8s ease forwards 0.8s;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  opacity: 0;
  animation: fadeUp 0.8s ease forwards 1s;
}

.stat-card {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 12px;
  padding: 1.2rem 0.8rem;
  backdrop-filter: blur(10px);
  transition: all 0.3s;
}

.stat-card:hover {
  background: rgba(255,255,255,0.1);
  border-color: var(--gold);
  transform: translateY(-3px);
}

.stat-value {
  display: block;
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--gold);
}

.stat-label {
  display: block;
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: rgba(255,255,255,0.5);
  margin-top: 0.3rem;
}

.hero-scroll {
  margin-top: 3rem;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.3);
  opacity: 0;
  animation: fadeUp 0.8s ease forwards 1.2s, pulse 2s ease-in-out infinite 2s;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 0.6; }
}

/* ═══ SECTIONS ═══ */
.section {
  padding: 5rem 4rem;
  border-bottom: 1px solid var(--border);
}

.section:nth-child(odd):not(#hero) {
  background: var(--bg-warm);
}

.section-header {
  max-width: 900px;
  margin: 0 auto 3rem;
  text-align: center;
}

.section-number {
  font-family: var(--font-serif);
  font-size: 3.5rem;
  font-weight: 900;
  color: var(--navy);
  opacity: 0.08;
  display: block;
  line-height: 1;
  margin-bottom: -1rem;
}

.section-header h2 {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--navy);
  line-height: 1.3;
}

.section-subtitle {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
  font-style: italic;
}

/* ═══ EXPORT BUTTONS ═══ */
.btn-export {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 1.5rem;
  padding: 0.6rem 1.2rem;
  background: var(--navy);
  color: white;
  border: none;
  border-radius: 6px;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: 0 4px 6px rgba(15, 40, 80, 0.2);
}

.btn-export:hover {
  background: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 6px 12px rgba(37, 99, 235, 0.3);
}


/* ═══ CHART CONTAINER ═══ */
.chart-container {
  max-width: 1100px;
  margin: 0 auto 3rem;
  background: white;
  border-radius: 16px;
  box-shadow:
    0 1px 3px rgba(0,0,0,0.04),
    0 8px 30px rgba(0,0,0,0.06);
  overflow: hidden;
  border: 1px solid var(--border);
  padding: 1.5rem;
}

.chart-container--wide {
  max-width: 1400px;
  overflow-x: auto;
}

.chart {
  width: 100%;
  min-height: 500px;
}

.chart svg {
  display: block;
  width: 100%;
  height: auto;
}

/* ═══ D3 TOOLTIP ═══ */
.d3-tooltip {
  position: fixed;
  pointer-events: none;
  background: rgba(15, 40, 80, 0.95);
  color: white;
  padding: 12px 16px;
  border-radius: 10px;
  font-size: 0.82rem;
  font-family: var(--font-sans);
  line-height: 1.6;
  max-width: 340px;
  z-index: 9999;
  box-shadow: 0 8px 32px rgba(0,0,0,0.35);
  border: 1px solid rgba(212, 167, 74, 0.3);
  opacity: 0;
  transition: opacity 0.2s ease;
}

.d3-tooltip.visible {
  opacity: 1;
}

.d3-tooltip .tt-title {
  font-weight: 700;
  color: var(--gold-light);
  margin-bottom: 4px;
  font-size: 0.9rem;
}

.d3-tooltip .tt-value {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 600;
  color: #93c5fd;
}

/* ═══ D3 SANKEY ═══ */
.sankey-link {
  fill: none;
  stroke-opacity: 0.35;
  transition: stroke-opacity 0.2s ease;
}

.sankey-link:hover {
  stroke-opacity: 0.65;
}

.sankey-node rect {
  cursor: pointer;
  transition: opacity 0.2s;
}

.sankey-node rect:hover {
  opacity: 0.85;
}

.sankey-node text {
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 600;
  fill: var(--text);
  pointer-events: none;
}

/* ═══ D3 SANKEY LEGEND ═══ */
.sankey-legend-container {
  margin-top: 2.5rem;
  padding: 1.8rem;
  background: var(--bg-warm);
  border-radius: 12px;
  border: 1px solid var(--border);
}

.sankey-legend-container h4 {
  font-family: var(--font-serif);
  color: var(--navy);
  margin-bottom: 1.5rem;
  text-align: center;
  font-size: 1.3rem;
}

.sankey-legend-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}

.sankey-legend-item {
  display: flex;
  align-items: flex-start;
  font-size: 0.85rem;
  color: var(--text);
  line-height: 1.4;
}

.sankey-legend-color {
  display: inline-block;
  width: 14px;
  height: 14px;
  border-radius: 4px;
  margin-right: 10px;
  flex-shrink: 0;
  margin-top: 2px;
}

.sankey-legend-text {
  flex: 1;
}

.sankey-legend-text strong {
  color: var(--navy);
  display: block;
  font-size: 0.9rem;
  margin-bottom: 2px;
}

/* ═══ D3 TREEMAP ═══ */
.treemap-cell rect {
  stroke: white;
  stroke-width: 2px;
  transition: opacity 0.2s ease;
  cursor: pointer;
}

.treemap-cell rect:hover {
  opacity: 0.8;
  stroke-width: 3px;
  stroke: var(--gold);
}

.treemap-cell text {
  font-family: var(--font-sans);
  fill: white;
  pointer-events: none;
  text-shadow: 0 1px 3px rgba(0,0,0,0.5);
}

.treemap-cell .cell-name {
  font-weight: 600;
  font-size: 12px;
}

.treemap-cell .cell-value {
  font-weight: 400;
  font-size: 11px;
  opacity: 0.9;
}

/* ═══ D3 BAR CHART ═══ */
.bar-group rect {
  cursor: pointer;
  transition: opacity 0.2s ease;
  rx: 6;
  ry: 6;
}

.bar-group rect:hover {
  opacity: 0.8;
}

.bar-group text {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 14px;
  fill: var(--navy);
}

.axis text {
  font-family: var(--font-sans);
  font-size: 13px;
  fill: var(--text);
  font-weight: 500;
}

.axis line, .axis path {
  stroke: var(--border);
}

/* ═══ D3 MAP ═══ */
.map-country {
  fill: #e2e8f0;
  stroke: #94a3b8;
  stroke-width: 0.5;
}

.map-country.morocco {
  fill: #dbeafe;
  stroke: var(--navy);
  stroke-width: 1.5;
}

.map-bubble {
  stroke: white;
  stroke-width: 2;
  cursor: pointer;
  opacity: 0.82;
  transition: opacity 0.2s, r 0.3s ease;
}

.map-bubble:hover {
  opacity: 1;
  stroke: var(--gold);
  stroke-width: 3;
}

.map-label {
  font-family: var(--font-sans);
  font-size: 10px;
  font-weight: 600;
  fill: var(--navy);
  pointer-events: none;
  text-anchor: middle;
}

.map-legend-box {
  fill: rgba(255,255,255,0.92);
  stroke: var(--border);
  stroke-width: 1;
  rx: 8;
}

/* ═══ INTERPRETATION (newspaper style) ═══ */
.interpretation {
  max-width: 720px;
  margin: 0 auto;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--text);
}

.interpretation h3 {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  color: var(--navy);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--gold);
  display: inline-block;
}

.interpretation p {
  margin-bottom: 1.2rem;
  text-align: justify;
  hyphens: auto;
}

.interpretation p:first-of-type::first-letter {
  font-family: var(--font-serif);
  font-size: 3rem;
  font-weight: 900;
  float: left;
  line-height: 1;
  margin-right: 0.5rem;
  margin-top: 0.1rem;
  color: var(--navy);
}

.insight-box {
  background: linear-gradient(135deg, #f0f4ff 0%, #e8f0fe 100%);
  border-left: 4px solid var(--accent);
  border-radius: 0 12px 12px 0;
  padding: 1.5rem 1.8rem;
  margin: 1.5rem 0;
}

.insight-box h4 {
  font-size: 0.95rem;
  color: var(--navy);
  margin-bottom: 0.5rem;
}

.insight-box p {
  font-size: 0.92rem;
  color: var(--text);
  margin-bottom: 0;
}

.source-note {
  font-family: var(--font-mono);
  font-size: 0.72rem !important;
  color: var(--text-muted) !important;
  border-top: 1px solid var(--border);
  padding-top: 0.8rem;
  margin-top: 1.5rem !important;
  text-align: left !important;
}

/* ═══ FOOTER ═══ */
footer {
  background: var(--navy);
  color: rgba(255,255,255,0.6);
  padding: 3rem;
  text-align: center;
}

.footer-content p {
  margin: 0.3rem 0;
  font-size: 0.85rem;
}

.footer-sources {
  font-size: 0.72rem !important;
  opacity: 0.4;
  margin-top: 0.8rem !important;
}

/* ═══ SCROLL ANIMATIONS ═══ */
.section {
  opacity: 1;
}

.section.animate-in .section-header,
.section.animate-in .chart-container,
.section.animate-in .interpretation {
  animation: fadeSlideUp 0.6s ease both;
}

@keyframes fadeSlideUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.section.animate-in .chart-container { animation-delay: 0.15s; }
.section.animate-in .interpretation { animation-delay: 0.3s; }

/* ═══ RESPONSIVE ═══ */
@media (max-width: 1024px) {
  #sidebar {
    transform: translateX(-100%);
  }
  #sidebar.open {
    transform: translateX(0);
  }
  #sidebar-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }
  #content {
    margin-left: 0;
  }
  .section {
    padding: 3rem 1.5rem;
  }
  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
  }
  .hero-line1 { font-size: 2rem; }
  .hero-line2 { font-size: 1.5rem; }
}

@media (max-width: 600px) {
  .hero-stats {
    grid-template-columns: 1fr 1fr;
    gap: 0.6rem;
  }
  .stat-value { font-size: 1.2rem; }
  .section-header h2 { font-size: 1.4rem; }
  .section-number { font-size: 2.5rem; }
}