@import url('https://fonts.googleapis.com/css2?family=Bebas+Neue&family=Merriweather:ital,wght@0,300;0,400;1,300;1,400&family=Inconsolata:wght@300;400&display=swap');

:root {
  --sky-white:  #f7fbff;
  --sky-pale:   #e8f4fd;
  --sky-soft:   #d0e8f8;
  --breeze:     #a0cce8;
  --wind:       #5090c0;
  --gust:       #1a60a0;
  --storm-grey: #3a4858;
  --text-dark:  #1a2a38;
  --text-mid:   #3a5068;
  --text-light: #6a8098;
  --accent-g:   #2a9060;
  --accent-y:   #c08020;
  --accent-r:   #c03030;
  --card-bg:    rgba(255,255,255,0.75);
  --card-border:rgba(80,144,192,0.18);
  --mono:       'Inconsolata', monospace;
  --shadow:     0 4px 24px rgba(26,60,96,0.08);
}

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

body {
  font-family: 'Merriweather', Georgia, serif;
  background: var(--sky-white);
  color: var(--text-dark);
  min-height: 100vh;
  overflow-x: hidden;
}

/* ── Background: sky gradient + flowing lines canvas ── */
.sky-bg {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background: linear-gradient(160deg,
    #f0f8ff 0%, #e8f4fd 30%, #f5fafe 60%, #f0f8ff 100%);
}
#wind-canvas {
  position: fixed; inset: 0; z-index: 0; pointer-events: none; opacity: 0.35;
}

/* ── Scroll progress ── */
#progress {
  position: fixed; top: 0; left: 0; height: 3px; width: 0%;
  background: linear-gradient(90deg, var(--wind), var(--breeze));
  z-index: 9999; pointer-events: none;
}

/* ── Layout ── */
.wrap {
  position: relative; z-index: 1;
  max-width: 1020px; margin: 0 auto; padding: 0 28px 100px;
}

/* ━━━━━━━━━━━━━━━━ HERO ━━━━━━━━━━━━━━━━ */
.hero {
  padding: 80px 0 60px; position: relative;
  opacity: 0; animation: airIn 1s 0.1s cubic-bezier(0.16,1,0.3,1) forwards;
}
@keyframes airIn {
  from { opacity:0; transform:translateY(20px); }
  to   { opacity:1; transform:none; }
}

.hero-tag {
  font-family: var(--mono); font-size: 0.67rem; font-weight: 300;
  letter-spacing: 0.3em; text-transform: uppercase;
  color: var(--wind); margin-bottom: 22px;
}

.hero-layout { display: grid; grid-template-columns: 1fr 300px; gap: 50px; align-items: end; }

.hero h1 {
  font-family: 'Bebas Neue', Impact, sans-serif;
  font-size: clamp(7rem, 18vw, 16rem);
  font-weight: 400; line-height: 0.82; letter-spacing: -0.02em;
  color: var(--text-dark);
  position: relative;
}
.hero h1 .subtitle {
  display: block; font-size: 18%; letter-spacing: 0.25em;
  color: var(--wind); font-weight: 400; margin-bottom: 8px;
}

.hero-right { padding-bottom: 12px; }
.hero-desc {
  font-size: 1.05rem; font-style: italic; line-height: 1.85;
  color: var(--text-light); margin-bottom: 28px;
}
.hero-beaufort-mini {
  padding: 18px 20px; background: var(--card-bg);
  border: 1px solid var(--card-border); border-radius: 12px;
  backdrop-filter: blur(8px); box-shadow: var(--shadow);
}
.bf-label { font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.22em;
  text-transform: uppercase; color: var(--wind); margin-bottom: 8px; display: block; }
.bf-val { font-family: 'Bebas Neue', sans-serif; font-size: 2.8rem; color: var(--gust);
  line-height: 1; display: block; margin-bottom: 3px; }
.bf-desc { font-size: 0.82rem; color: var(--text-light); line-height: 1.45; }

/* ━━━━━━━━━━━━━━━━ DIVIDER ━━━━━━━━━━━━━━━━ */
.sky-rule {
  width: 100%; height: 1px; margin: 60px 0;
  background: linear-gradient(90deg, transparent, var(--breeze), transparent);
  opacity: 0.5;
}

/* ━━━━━━━━━━━━━━━━ SEC UTILS ━━━━━━━━━━━━━━━━ */
.sec-tag {
  font-family: var(--mono); font-size: 0.62rem; font-weight: 300;
  letter-spacing: 0.3em; text-transform: uppercase;
  color: var(--wind); margin-bottom: 8px;
}
.sec-h2 {
  font-family: 'Bebas Neue', sans-serif; font-size: clamp(2rem, 5vw, 3.8rem);
  font-weight: 400; letter-spacing: -0.01em; color: var(--text-dark);
  margin-bottom: 30px; line-height: 1;
}

/* ━━━━━━━━━━━━━━━━ FORMATION ━━━━━━━━━━━━━━━━ */
.formation-section { opacity: 0; animation: rise 0.8s forwards; }

.formation-steps {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 2px;
  background: var(--card-border); border-radius: 14px; overflow: hidden;
}
.form-step {
  background: var(--card-bg); padding: 24px 20px;
  backdrop-filter: blur(10px); transition: background 0.3s;
  border: 1px solid transparent; cursor: default;
}
.form-step:hover { background: rgba(208,232,248,0.8); }
.form-num {
  font-family: var(--mono); font-size: 0.65rem; color: var(--breeze);
  letter-spacing: 0.15em; margin-bottom: 10px; display: block;
}
.form-step h3 { font-size: 1rem; font-weight: 400; color: var(--gust); margin-bottom: 8px; }
.form-step p  { font-size: 0.88rem; line-height: 1.7; color: var(--text-light); }
.form-arrow {
  position: absolute; right: -11px; top: 50%;
  transform: translateY(-50%); font-size: 1.1rem; color: var(--wind); z-index: 2;
}
.form-step { position: relative; }
.form-step:last-child .form-arrow { display: none; }

/* ━━━━━━━━━━━━━━━━ BEAUFORT TABLE ━━━━━━━━━━━━━━━━ */
.beaufort-section { opacity: 0; animation: rise 0.8s forwards; }

.bf-table { width: 100%; border-collapse: collapse; }
.bf-table th {
  font-family: var(--mono); font-size: 0.62rem; font-weight: 300;
  letter-spacing: 0.2em; text-transform: uppercase; color: var(--wind);
  padding: 12px 14px; text-align: left; border-bottom: 1px solid var(--card-border);
}
.bf-table td {
  padding: 12px 14px; border-bottom: 1px solid rgba(80,144,192,0.08);
  font-size: 0.91rem; color: var(--text-light); vertical-align: middle;
}
.bf-table tr:hover td { background: rgba(168,204,232,0.12); }
.bf-table td:first-child {
  font-family: 'Bebas Neue', sans-serif; font-size: 1.6rem;
  color: var(--gust); line-height: 1; width: 50px;
}
.bf-table td:nth-child(2) { color: var(--text-dark); font-weight: 400; }
.bf-table .mono { font-family: var(--mono); font-size: 0.85rem; }
.bf-bar-wrap { width: 100px; height: 6px; background: rgba(80,144,192,0.15); border-radius: 3px; display: inline-block; vertical-align: middle; margin-right: 8px; }
.bf-bar { height: 100%; border-radius: 3px; }

/* ━━━━━━━━━━━━━━━━ TYPES DE VENTS ━━━━━━━━━━━━━━━━ */
.types-section { opacity: 0; animation: rise 0.8s forwards; }

.types-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px;
}
.type-card {
  background: var(--card-bg); border: 1px solid var(--card-border);
  border-radius: 14px; padding: 24px 22px; box-shadow: var(--shadow);
  transition: transform 0.3s, box-shadow 0.3s; position: relative; overflow: hidden;
}
.type-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--wind), var(--breeze));
  transform: scaleX(0); transform-origin: left; transition: transform 0.4s;
}
.type-card:hover { transform: translateY(-4px); box-shadow: 0 12px 32px rgba(26,60,96,0.14); }
.type-card:hover::before { transform: scaleX(1); }
.type-icon { font-size: 1.8rem; margin-bottom: 12px; display: block; }
.type-card h3 { font-size: 1.1rem; font-weight: 400; color: var(--gust); margin-bottom: 8px; }
.type-card p  { font-size: 0.9rem; line-height: 1.72; color: var(--text-light); }
.type-region {
  margin-top: 10px; font-family: var(--mono); font-size: 0.65rem;
  color: var(--wind); letter-spacing: 0.12em;
}

/* ━━━━━━━━━━━━━━━━ IMPACTS ━━━━━━━━━━━━━━━━ */
.impacts-section { opacity: 0; animation: rise 0.8s forwards; }

.impacts-split { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.impact-col { display: flex; flex-direction: column; gap: 16px; }
.impact-col-title {
  font-family: 'Bebas Neue', sans-serif; font-size: 1.2rem;
  letter-spacing: 0.04em; margin-bottom: 4px;
}
.benefit-title { color: var(--accent-g); }
.risk-title    { color: var(--accent-r); }

.impact-item {
  display: flex; gap: 14px; align-items: flex-start; padding: 16px 18px;
  background: var(--card-bg); border: 1px solid var(--card-border);
  border-radius: 10px; box-shadow: var(--shadow);
  transition: transform 0.25s;
}
.impact-item:hover { transform: translateX(4px); }
.impact-item.benefit { border-left: 3px solid var(--accent-g); }
.impact-item.risk    { border-left: 3px solid var(--accent-r); }
.impact-icon { font-size: 1.5rem; flex-shrink: 0; }
.impact-item h3 { font-size: 0.95rem; font-weight: 400; color: var(--text-dark); margin-bottom: 4px; }
.impact-item p  { font-size: 0.87rem; line-height: 1.65; color: var(--text-light); }

/* ━━━━━━━━━━━━━━━━ ÉNERGIE ÉOLIENNE ━━━━━━━━━━━━━━━━ */
.energy-section { opacity: 0; animation: rise 0.8s forwards; }

.energy-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 32px; }
.estat {
  text-align: center; padding: 24px 16px; background: var(--card-bg);
  border: 1px solid var(--card-border); border-radius: 12px; box-shadow: var(--shadow);
}
.estat-val {
  font-family: 'Bebas Neue', sans-serif; font-size: 2.4rem; color: var(--gust);
  line-height: 1; display: block; margin-bottom: 4px;
}
.estat-lbl { font-size: 0.8rem; color: var(--text-light); line-height: 1.4; }

.energy-desc {
  padding: 24px 28px; background: var(--card-bg); border: 1px solid var(--card-border);
  border-radius: 14px; box-shadow: var(--shadow); font-size: 0.97rem;
  line-height: 1.82; color: var(--text-light); font-style: italic;
}

/* ━━━━━━━━━━━━━━━━ FOOTER ━━━━━━━━━━━━━━━━ */
footer {
  margin-top: 80px; padding-top: 22px;
  border-top: 1px solid var(--card-border);
  text-align: center; font-family: var(--mono);
  font-size: 0.62rem; font-weight: 300; letter-spacing: 0.22em;
  text-transform: uppercase; color: var(--text-light); opacity: 0.7;
}

@keyframes rise { from { opacity:0; transform: translateY(16px); } to { opacity:1; transform:none; } }

.formation-section { animation-delay: 0.7s; }
.beaufort-section  { animation-delay: 0.9s; }
.types-section     { animation-delay: 1.1s; }
.impacts-section   { animation-delay: 1.3s; }
.energy-section    { animation-delay: 1.5s; }

@media (max-width: 760px) {
  .hero-layout { grid-template-columns: 1fr; }
  .formation-steps { grid-template-columns: 1fr 1fr; }
  .impacts-split { grid-template-columns: 1fr; }
  .energy-stats  { grid-template-columns: 1fr 1fr; }
  .hero h1 { font-size: clamp(5rem, 22vw, 10rem); }
}
@media (max-width: 480px) {
  .formation-steps { grid-template-columns: 1fr; }
  .energy-stats  { grid-template-columns: 1fr; }
}