@import url('https://fonts.googleapis.com/css2?family=Black+Han+Sans&family=Noto+Serif:ital,wght@0,300;0,400;1,300&family=Roboto+Mono:wght@300;400&display=swap');

:root {
  --concrete:    #0e0d0c;
  --rubble:      #191714;
  --fault:       #252118;
  --stone:       #3a3428;
  --gravel:      #5a5040;
  --dust:        #8a7860;
  --crack-amber: #d0780a;
  --hot:         #e89820;
  --lava-line:   #f0b830;
  --seismic-red: #c03010;
  --paper:       #d8c8a8;
  --text-main:   #d0bfa0;
  --text-muted:  #806850;
  --card-bg:     rgba(30,26,18,0.80);
  --card-border: rgba(208,120,10,0.22);
  --mono:        'Roboto Mono', monospace;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: 'Noto Serif', Georgia, serif;
  background: var(--concrete);
  color: var(--text-main);
  min-height: 100vh;
  overflow-x: hidden;
}

/* ── Cracked concrete bg ── */
.ground-bg {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background:
    radial-gradient(ellipse 80% 55% at 50% 100%, rgba(90,80,40,0.40) 0%, transparent 65%),
    radial-gradient(ellipse 60% 40% at 20% 50%,  rgba(58,52,40,0.30) 0%, transparent 55%),
    linear-gradient(175deg, #0e0d0c 0%, #141208 50%, #0c0b0a 100%);
}

#quake-canvas {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
}

#progress {
  position: fixed; top: 0; left: 0; height: 3px; width: 0%;
  background: linear-gradient(90deg, var(--seismic-red), var(--hot));
  z-index: 9999; pointer-events: none;
}

/* ── Layout ── */
.wrap {
  position: relative; z-index: 1;
  max-width: 1000px; margin: 0 auto; padding: 0 28px 100px;
}

/* ══ HERO ══ */
.hero {
  padding-top: 80px; padding-bottom: 60px;
  border-bottom: 1px solid rgba(208,120,10,0.2);
  opacity: 0; animation: groundBreak 1.2s 0.1s cubic-bezier(0.16,1,0.3,1) forwards;
}
@keyframes groundBreak {
  from { opacity:0; transform:translateY(28px) skewY(-0.5deg); }
  to   { opacity:1; transform:none; }
}

.hero-eyebrow {
  font-family: var(--mono); font-size: 0.65rem; font-weight: 300;
  letter-spacing: 0.35em; text-transform: uppercase;
  color: var(--crack-amber); margin-bottom: 20px;
}

.hero h1 {
  font-family: 'Black Han Sans', Impact, sans-serif;
  font-size: clamp(6rem, 20vw, 17rem);
  font-weight: 400; line-height: 0.8; letter-spacing: -0.04em;
  text-transform: uppercase;
  color: var(--paper);
  position: relative;
  -webkit-text-stroke: 0px transparent;
}
.hero h1 .sub {
  display: block; font-size: 20%; letter-spacing: 0.22em;
  color: var(--crack-amber); margin-bottom: 8px; line-height: 1.2;
}

.hero-crack-line {
  width: 100%; height: 2px; margin: 28px 0 24px;
  background: linear-gradient(90deg, transparent, var(--crack-amber) 20%, var(--hot) 50%, var(--crack-amber) 80%, transparent);
  position: relative; opacity: 0.6;
}
.hero-crack-line::after {
  content: ''; position: absolute; left: 50%; top: 50%;
  transform: translate(-50%,-50%) rotate(45deg);
  width: 8px; height: 8px;
  background: var(--lava-line);
  box-shadow: 0 0 10px var(--lava-line);
}

.hero-stats {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 24px;
}
.hstat-val {
  font-family: 'Black Han Sans', sans-serif; font-size: 2.8rem;
  color: var(--hot); line-height: 1; display: block; margin-bottom: 4px;
}
.hstat-lbl { font-size: 0.85rem; font-style: italic; color: var(--text-muted); line-height: 1.45; }

.hero-desc {
  font-size: 1.08rem; font-style: italic; line-height: 1.85;
  color: var(--text-muted); max-width: 680px;
}

/* ── Util ── */
.fault-rule {
  width: 100%; height: 1px; margin: 64px 0;
  background: linear-gradient(90deg, transparent, var(--crack-amber), transparent);
  opacity: 0.3;
}

.sec-tag {
  font-family: var(--mono); font-size: 0.62rem; font-weight: 300;
  letter-spacing: 0.3em; text-transform: uppercase;
  color: var(--crack-amber); margin-bottom: 10px;
}
.sec-h2 {
  font-family: 'Black Han Sans', sans-serif; font-size: clamp(1.8rem, 5vw, 3.6rem);
  font-weight: 400; text-transform: uppercase; letter-spacing: -0.02em;
  color: var(--paper); margin-bottom: 30px; line-height: 1;
}

/* ══ CAUSES / MÉCANISME ══ */
.mec-section { opacity: 0; animation: rise 0.8s forwards; }

.mec-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 20px;
}
.mec-item {
  padding: 24px; background: var(--card-bg);
  border: 1px solid var(--card-border); border-radius: 8px;
  backdrop-filter: blur(12px); position: relative; overflow: hidden;
  transition: border-color 0.3s, transform 0.3s;
}
.mec-item:hover { border-color: rgba(208,120,10,0.55); transform: translate(3px,-3px); }
.mec-item::before {
  content: ''; position: absolute; top: 0; left: 0; bottom: 0; width: 3px;
  background: linear-gradient(to bottom, var(--crack-amber), var(--seismic-red));
}
.mec-item h3 {
  font-family: 'Black Han Sans', sans-serif; font-size: 1.05rem; text-transform: uppercase;
  letter-spacing: 0.04em; color: var(--dust); margin-bottom: 10px;
}
.mec-item p { font-size: 0.91rem; line-height: 1.75; color: var(--text-muted); }
.mec-tag {
  margin-top: 10px; font-family: var(--mono); font-size: 0.64rem;
  color: var(--crack-amber); letter-spacing: 0.12em;
}

/* ══ ONDES SISMIQUES ══ */
.waves-section { opacity: 0; animation: rise 0.8s forwards; }

.waves-strip {
  display: flex; flex-direction: column; gap: 0;
  border: 1px solid var(--card-border); border-radius: 12px; overflow: hidden;
}
.wave-row {
  display: grid; grid-template-columns: 6px 80px 1fr auto;
  align-items: center; gap: 0;
  padding: 0; border-bottom: 1px solid rgba(208,120,10,0.07);
  transition: background 0.25s;
}
.wave-row:last-child { border-bottom: none; }
.wave-row:hover { background: rgba(60,50,28,0.5); }
.wave-color { min-height: 100%; }
.wave-letter {
  font-family: 'Black Han Sans', sans-serif; font-size: 2.4rem; text-align: center;
  padding: 20px 0; color: var(--dust); border-right: 1px solid rgba(208,120,10,0.08);
}
.wave-body { padding: 20px 24px; }
.wave-body h3 {
  font-family: 'Black Han Sans', sans-serif; font-size: 1rem; text-transform: uppercase;
  letter-spacing: 0.04em; color: var(--paper); margin-bottom: 6px;
}
.wave-body p { font-size: 0.9rem; line-height: 1.7; color: var(--text-muted); }
.wave-speed {
  font-family: var(--mono); font-size: 0.78rem; color: var(--crack-amber);
  padding: 20px; white-space: nowrap; border-left: 1px solid rgba(208,120,10,0.08);
}

/* ══ ÉCHELLES ══ */
.scales-section { opacity: 0; animation: rise 0.8s forwards; }

.scales-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.scale-block {
  background: var(--card-bg); border: 1px solid var(--card-border);
  border-radius: 10px; overflow: hidden; backdrop-filter: blur(12px);
}
.scale-header {
  padding: 18px 22px; border-bottom: 1px solid rgba(208,120,10,0.1);
  background: rgba(208,120,10,0.06);
}
.scale-header h3 {
  font-family: 'Black Han Sans', sans-serif; font-size: 1.1rem; text-transform: uppercase;
  color: var(--dust); letter-spacing: 0.04em;
}
.scale-rows { display: flex; flex-direction: column; }
.scale-row {
  display: flex; gap: 0; padding: 12px 22px;
  border-bottom: 1px solid rgba(208,120,10,0.06); align-items: center;
  transition: background 0.2s;
}
.scale-row:last-child { border-bottom: none; }
.scale-row:hover { background: rgba(208,120,10,0.05); }
.scale-num {
  font-family: 'Black Han Sans', sans-serif; font-size: 1.3rem; color: var(--hot);
  min-width: 52px; line-height: 1;
}
.scale-lbl { font-size: 0.82rem; color: var(--text-muted); line-height: 1.45; }
.scale-dot {
  width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; margin-right: 14px;
}

/* ══ HISTORIQUE ══ */
.history-section { opacity: 0; animation: rise 0.8s forwards; }

.quake-table { width: 100%; border-collapse: collapse; }
.quake-table th {
  font-family: var(--mono); font-size: 0.62rem; font-weight: 300;
  letter-spacing: 0.22em; text-transform: uppercase; color: var(--crack-amber);
  padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--card-border);
}
.quake-table td {
  padding: 13px 16px; border-bottom: 1px solid rgba(208,120,10,0.06);
  font-size: 0.91rem; color: var(--text-muted); vertical-align: middle;
}
.quake-table tr:hover td { background: rgba(208,120,10,0.04); }
.quake-table td:first-child { font-family: var(--mono); font-size: 0.86rem; color: var(--crack-amber); }
.quake-table td:nth-child(2) { color: var(--paper); font-style: italic; }
.mag-badge {
  font-family: 'Black Han Sans', sans-serif; font-size: 1.4rem;
  color: var(--hot); line-height: 1;
}
.victims-col { font-family: var(--mono); color: var(--seismic-red); font-size: 0.86rem; }

/* ══ PRÉVENTION ══ */
.prev-section { opacity: 0; animation: rise 0.8s forwards; }

.prev-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px,1fr)); gap: 16px; }
.prev-card {
  padding: 24px 22px; background: var(--card-bg);
  border: 1px solid var(--card-border); border-radius: 10px;
  backdrop-filter: blur(12px); transition: transform 0.3s, box-shadow 0.3s;
}
.prev-card:hover { transform: translateY(-4px); box-shadow: 0 12px 32px rgba(80,60,10,0.35); }
.prev-icon { font-size: 1.9rem; margin-bottom: 13px; display: block; }
.prev-card h3 {
  font-family: 'Black Han Sans', sans-serif; font-size: 1rem; text-transform: uppercase;
  letter-spacing: 0.04em; color: var(--dust); margin-bottom: 9px;
}
.prev-card p, .prev-card li { font-size: 0.9rem; line-height: 1.73; color: var(--text-muted); }
.prev-card ul { padding-left: 1.1em; }
.prev-card li { margin-bottom: 4px; }

/* ══ FOOTER ══ */
footer {
  margin-top: 80px; padding-top: 22px;
  border-top: 1px solid rgba(208,120,10,0.18);
  text-align: center; font-family: var(--mono);
  font-size: 0.62rem; font-weight: 300; letter-spacing: 0.22em;
  text-transform: uppercase; color: var(--text-muted); opacity: 0.5;
}

@keyframes rise { from { opacity:0; transform:translateY(18px); } to { opacity:1; transform:none; } }

.mec-section     { animation-delay: 0.8s; }
.waves-section   { animation-delay: 1.0s; }
.scales-section  { animation-delay: 1.2s; }
.history-section { animation-delay: 1.4s; }
.prev-section    { animation-delay: 1.6s; }

@media (max-width: 680px) {
  .mec-grid    { grid-template-columns: 1fr; }
  .scales-grid { grid-template-columns: 1fr; }
  .hero-stats  { grid-template-columns: 1fr 1fr; }
  .wave-row    { grid-template-columns: 6px 60px 1fr; }
  .wave-speed  { display: none; }
}