:root {
  --bg: #0D0F14;
  --bg-elevated: #1C2028;
  --bg-card: #2E333D;
  --fg: #FFFFFF;
  --fg-muted: #9AA3B0;
  --fg-subtle: #98A0AE;
  --accent: #FF7A1A;
  --accent-hover: #E86A12;
  --accent-light: #FFA45C;
  --teal: #2DD4BF;
  --teal-hover: #14B8A6;
  --border: #2E333D;
  --border-light: #39404C;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 34px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,.3);
  --shadow-md: 0 4px 12px rgba(0,0,0,.4);
  --shadow-lg: 0 16px 48px rgba(0,0,0,.5);
  --transition: 160ms ease;
  --container: 1120px;
  --header-h: 72px;
}

*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Barlow', system-ui, sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img, picture, video, canvas, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: none; background: none; }
ul { list-style: none; padding: 0; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
h1, h2, h3, h4 { font-family: 'Bebas Neue', sans-serif; letter-spacing: 0.02em; line-height: 1.1; }
h1 { font-size: clamp(2.5rem, 6vw, 4.5rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.5rem); }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }

.header { position: fixed; top: 0; left: 0; right: 0; height: var(--header-h); z-index: 100; background: rgba(13,15,20,.8); backdrop-filter: blur(12px); border-bottom: 1px solid var(--border); }
.header .container { display: flex; align-items: center; justify-content: space-between; height: 100%; }
.logo { display: flex; align-items: center; gap: 12px; }
.logo-text { display: flex; flex-direction: column; line-height: 1; }
.logo-climbing { font-family: 'Bebas Neue', sans-serif; font-size: 1.1rem; letter-spacing: 0.08em; color: var(--fg); }
.logo-addicts { font-family: 'Bebas Neue', sans-serif; font-size: 1.1rem; letter-spacing: 0.08em; color: var(--accent); }
.nav { display: flex; align-items: center; gap: 16px; }
.nav-link { font-size: 0.875rem; font-weight: 500; color: var(--fg-muted); transition: color var(--transition); }
.nav-link:hover { color: var(--fg); }

/* Sélecteur de langue FR/EN */
.lang-switcher { display: inline-flex; align-items: center; gap: 4px; padding: 4px; border: 1px solid var(--border-light); border-radius: 999px; background: rgba(255,255,255,.04); }
.lang-switcher button, .lang-switcher a { font-size: 0.75rem; font-weight: 700; letter-spacing: 0.06em; padding: 6px 12px; border-radius: 999px; color: var(--fg-muted); transition: all var(--transition); }
.lang-switcher button:hover, .lang-switcher a:hover { color: var(--fg); }
.lang-switcher button.is-active, .lang-switcher a.is-active { background: var(--accent); color: var(--bg); }
.header-actions { display: flex; align-items: center; gap: 12px; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; font-weight: 600; border-radius: var(--radius-md); padding: 14px 28px; transition: all var(--transition); white-space: nowrap; }
.btn-lg { padding: 18px 36px; font-size: 1.0625rem; }
.btn-primary { background: var(--accent); color: var(--bg); }
.btn-primary:hover { background: var(--accent-hover); transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn-secondary { background: transparent; color: var(--fg); border: 1px solid var(--border-light); }
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); }

.hero-main { padding: calc(var(--header-h) + 80px) 0 100px; text-align: center; }
.beta-badge { display: inline-block; margin-bottom: 20px; padding: 8px 18px; border: 1px solid var(--accent); border-radius: 999px; color: var(--accent); font-size: 0.875rem; font-weight: 600; letter-spacing: 0.04em; background: rgba(255,122,26,.08); }
.feature-status { display: inline-block; font-size: 0.75rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 12px; padding: 4px 12px; border-radius: 999px; }
.feature-status.is-live { color: var(--teal); background: rgba(45,212,191,.1); border: 1px solid rgba(45,212,191,.4); }
.feature-status.is-building { color: var(--accent-light); background: rgba(255,122,26,.1); border: 1px solid rgba(255,122,26,.4); }
.download-text a[href^="mailto:"] { color: var(--accent-light); font-weight: 600; }
.download-text a[href^="mailto:"]:hover { text-decoration: underline; }
.hero-subtitle { max-width: 680px; margin: 24px auto 40px; font-size: 1.125rem; color: var(--fg-muted); line-height: 1.7; }
.hero-tagline { margin: 16px 0 0; font-size: 1.25rem; font-weight: 600; letter-spacing: 0.02em; color: var(--accent); }
.hero-cta { display: flex; flex-wrap: wrap; gap: 16px; justify-content: center; margin-bottom: 64px; }
.hero-stats { display: flex; flex-wrap: wrap; gap: 32px; justify-content: center; }
.stat { text-align: center; }
.stat-value { display: block; font-family: 'Bebas Neue', sans-serif; font-size: clamp(2rem, 4vw, 3rem); letter-spacing: 0.02em; color: var(--accent); line-height: 1; }
.stat-label { font-size: 0.875rem; color: var(--fg-subtle); text-transform: uppercase; letter-spacing: 0.08em; }

.section-header { text-align: center; margin-bottom: 56px; }
.section-header p { color: var(--fg-muted); font-size: 1.125rem; margin-top: 8px; }

.features { padding: 100px 0; background: linear-gradient(180deg, var(--bg) 0%, var(--bg-elevated) 100%); }
.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; }
.feature-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 32px; transition: all var(--transition); }
.feature-card:hover { border-color: var(--border-light); transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.feature-icon { width: 56px; height: 56px; border-radius: var(--radius-md); background: rgba(255,122,26,.1); color: var(--accent); display: flex; align-items: center; justify-content: center; margin-bottom: 20px; }
.feature-card h3 { margin-bottom: 12px; }
.feature-card p { color: var(--fg-muted); line-height: 1.7; }

.download { padding: 100px 0; }
.download-content { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.download-text h2 { margin-bottom: 16px; }
.download-text p { color: var(--fg-muted); font-size: 1.125rem; margin-bottom: 32px; }
.store-buttons { display: flex; flex-wrap: wrap; gap: 16px; }
.store-btn { display: inline-flex; align-items: center; gap: 10px; padding: 14px 24px; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-md); color: var(--fg); font-weight: 600; font-size: 1rem; transition: all var(--transition); }
.store-btn:hover { border-color: var(--accent); background: var(--bg-elevated); transform: translateY(-2px); }
.download-phone { text-align: center; }

.footer { background: var(--bg-elevated); border-top: 1px solid var(--border); padding: 80px 0 32px; }
.footer-grid { display: grid; grid-template-columns: 2fr repeat(3, 1fr); gap: 48px; margin-bottom: 48px; }
.footer-brand .logo { flex-direction: column; align-items: flex-start; gap: 8px; margin-bottom: 16px; }
.footer-brand .logo span { font-family: 'Bebas Neue', sans-serif; font-size: 1.25rem; letter-spacing: 0.02em; }
.footer-brand p { color: var(--fg-subtle); font-size: 0.9375rem; }
.footer-nav h4 { font-family: 'Bebas Neue', sans-serif; font-size: 0.875rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--fg-muted); margin-bottom: 20px; }
.footer-nav li { margin-bottom: 12px; }
.footer-nav a { color: var(--fg); font-size: 0.9375rem; transition: color var(--transition); }
.footer-nav a:hover { color: var(--accent); }
.footer-bottom { padding-top: 32px; border-top: 1px solid var(--border); text-align: center; color: var(--fg-subtle); font-size: 0.875rem; }

@media (max-width: 768px) {
  /* Le CTA primaire reste visible ; les autres liens passent dans le menu repliable. */
  .nav .nav-link { display: none; }
  .nav .nav-link.btn-primary { display: inline-flex; padding: 10px 18px; }
  .nav { display: flex; position: relative; }
  .nav-toggle { display: inline-flex; }
  .hero-main { padding: calc(var(--header-h) + 40px) 0 60px; }
  .hero-stats { gap: 24px; }
  .features { padding: 60px 0; }
  .download-content { grid-template-columns: 1fr; text-align: center; }
  .store-buttons { justify-content: center; }
  .download-phone { order: -1; margin-bottom: 24px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-brand { grid-column: 1 / -1; }
}
@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
  /* Libère de la place pour le CTA + le burger + le sélecteur de langue. */
  .header .logo-text { display: none; }
}

/* Auth (sign in / create account) */
.auth-page { min-height: 100vh; display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 40px 20px; gap: 32px; }
.auth-logo { display: flex; align-items: center; gap: 10px; }
.auth-card { width: 100%; max-width: 400px; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 32px; box-shadow: var(--shadow-md); text-align: center; }
.auth-card h1 { font-size: 1.5rem; margin-bottom: 24px; }
.auth-field { margin-bottom: 16px; text-align: left; }
.auth-field label { display: block; font-size: 0.8125rem; color: var(--fg-muted); margin-bottom: 6px; }
.auth-field input { width: 100%; padding: 12px 14px; background: var(--bg-elevated); border: 1px solid var(--border-light); border-radius: var(--radius-sm); color: var(--fg); font-size: 0.9375rem; font-family: inherit; transition: border-color var(--transition); }
.auth-field input:focus { border-color: var(--accent); }
.auth-submit { width: 100%; margin-top: 4px; }
.auth-message { font-size: 0.875rem; color: var(--accent-light); margin-bottom: 16px; text-align: left; }
.auth-divider { display: flex; align-items: center; gap: 12px; margin: 24px 0; color: var(--fg-subtle); font-size: 0.8125rem; text-transform: uppercase; letter-spacing: 0.04em; }
.auth-divider::before, .auth-divider::after { content: ''; flex: 1; height: 1px; background: var(--border-light); }
.auth-google { width: 100%; }
.auth-note { margin-top: 20px; font-size: 0.8125rem; color: var(--fg-subtle); line-height: 1.6; }
.auth-switch { margin-top: 16px; font-size: 0.9375rem; color: var(--fg-muted); }
.auth-switch a { color: var(--accent); font-weight: 600; }
.auth-switch a:hover { text-decoration: underline; }

/* Bouton burger : caché sur desktop, affiché sous 768px (voir media query). */
.nav-toggle { display: none; align-items: center; justify-content: center; width: 44px; height: 44px; border: 1px solid var(--border-light); border-radius: var(--radius-sm); background: rgba(255,255,255,.04); }
.nav-toggle:hover { border-color: var(--accent); }
.nav-toggle-icon, .nav-toggle-icon::before, .nav-toggle-icon::after { display: block; width: 20px; height: 2px; background: var(--fg); border-radius: 2px; transition: transform var(--transition), opacity var(--transition); }
.nav-toggle-icon { position: relative; }
.nav-toggle-icon::before, .nav-toggle-icon::after { content: ''; position: absolute; left: 0; }
.nav-toggle-icon::before { top: -6px; }
.nav-toggle-icon::after { top: 6px; }
.nav-toggle[aria-expanded="true"] .nav-toggle-icon { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle-icon::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-icon::after { transform: translateY(-6px) rotate(-45deg); }

/* Panneau du menu repliable (mobile, quand .nav.is-open). */
@media (max-width: 768px) {
  .header .container { position: relative; }
  .nav.is-open .nav-link { position: static; }
  .nav.is-open {
    position: absolute;
    top: calc(var(--header-h) - 8px);
    right: 24px;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    min-width: 220px;
    padding: 12px;
    background: var(--bg-elevated);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    z-index: 200;
  }
  .nav.is-open .nav-link { display: block; padding: 10px 16px; border-radius: var(--radius-sm); }
  .nav.is-open .nav-link:hover { background: rgba(255,255,255,.06); }
  .nav.is-open .nav-link.btn-primary { text-align: center; }
}

/* Révélation progressive : les éléments sont visibles par défaut.
   C'est le JS qui ajoute .will-reveal (donc sans JS, tout reste lisible),
   puis .is-visible quand l'élément entre dans le viewport. */
html.js .will-reveal { opacity: 0; transform: translateY(20px); transition: opacity 0.6s ease, transform 0.6s ease; }
html.js .will-reveal.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  html.js .will-reveal { opacity: 1; transform: none; transition: none; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}
/* Système de points : holds, barèmes, philosophie */
.scoring { padding: 100px 0; }
.scoring-sub { font-size: clamp(1.5rem, 2.5vw, 2rem); margin: 64px 0 24px; text-align: center; }
.scoring-note { color: var(--fg-muted); text-align: center; max-width: 720px; margin: 20px auto 0; }
.scoring-tables { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 24px; }
.scoring-card { background: var(--bg-elevated); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 28px 32px; }
.scoring-card h3 { margin-bottom: 16px; }
.scoring-table { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
.scoring-table th, .scoring-table td { text-align: left; padding: 10px 0; border-bottom: 1px solid var(--border); vertical-align: top; }
.scoring-table tr:last-child th, .scoring-table tr:last-child td { border-bottom: none; }
.scoring-table th { font-weight: 600; padding-right: 16px; }
.scoring-table td { color: var(--fg-muted); }
.scoring-table .pts { min-width: 3.5rem; color: var(--accent); font-weight: 700; white-space: nowrap; text-align: right; padding-left: 16px; }
.altitude-list { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 16px; }
.altitude-step { background: var(--bg-card); border: 1px solid var(--border); border-top: 4px solid var(--tier, var(--accent)); border-radius: var(--radius-md); padding: 16px 18px; }
.altitude-step strong { display: block; font-family: 'Bebas Neue', sans-serif; font-size: 1.25rem; letter-spacing: 0.02em; font-weight: 400; }
.altitude-step span { display: block; color: var(--fg-muted); font-size: 0.9rem; }
@media (max-width: 768px) { .scoring { padding: 60px 0; } }
.scoring-card-sub { color: var(--fg-muted); font-size: 0.9rem; margin: -8px 0 8px; }
.scoring-lead { margin: 0 auto 24px; }