/* css/landing.css
   Landing page publique (js/landing.js), montrée aux visiteurs qui n'ont
   pas encore de profil sur cet appareil — avant l'inscription (voir
   css/auth.css pour l'écran d'inscription qui suit). Réutilise les tokens
   de design (variables.css) et les composants partagés (.btn, .card...). */

.screen-landing {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

/* ---------- Navigation ---------- */
.landing-nav {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-6);
  padding-top: calc(var(--space-4) + var(--safe-top));
  background: rgba(251, 246, 240, 0.82);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

@media (prefers-color-scheme: dark) {
  .landing-nav {
    background: rgba(30, 23, 16, 0.82);
  }
}

.landing-nav .logo-text {
  font-size: var(--fs-xl);
}

.landing-nav-links {
  display: none;
  align-items: center;
  gap: var(--space-6);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--color-text-secondary);
}

.landing-nav-links a:hover {
  color: var(--color-text-primary);
}

@media (min-width: 720px) {
  .landing-nav-links {
    display: flex;
  }
}

.landing-nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.landing-nav .btn {
  padding: 10px var(--space-5);
  font-size: var(--fs-sm);
}

/* ---------- Hero ---------- */
.landing-hero {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-8);
  text-align: center;
  padding: var(--space-12) var(--space-6) var(--space-16);
  background:
    radial-gradient(circle at 12% 8%, rgba(217, 114, 76, 0.14), transparent 42%),
    radial-gradient(circle at 88% 18%, rgba(232, 163, 61, 0.12), transparent 40%),
    radial-gradient(circle at 50% 100%, rgba(47, 122, 110, 0.1), transparent 45%);
}

.landing-hero-copy {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-5);
  max-width: 640px;
}

.landing-hero-title {
  font-size: clamp(2rem, 5.4vw, 3.25rem);
  font-weight: var(--fw-extrabold);
  letter-spacing: -0.03em;
  line-height: 1.12;
}

.landing-hero-title .accent {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.landing-hero-subtitle {
  font-size: var(--fs-lg);
  color: var(--color-text-secondary);
  line-height: 1.55;
  max-width: 480px;
}

.landing-cta-hint {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  font-weight: var(--fw-medium);
}

.landing-hero .btn-primary {
  font-size: var(--fs-md);
  padding: 16px var(--space-8);
}

/* ---------- Visuel hero (avatars + bulles + langues) ---------- */
.landing-hero-visual {
  position: relative;
  width: 100%;
  max-width: 460px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
  padding: var(--space-8) var(--space-4);
}

.landing-hero-person {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
}

.landing-hero-avatar {
  width: 68px;
  height: 68px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-full);
  background: var(--gradient-brand);
  font-size: 1.7rem;
  box-shadow: var(--shadow-brand);
}

.landing-hero-person:last-child .landing-hero-avatar {
  background: var(--gradient-live);
  box-shadow: var(--shadow-lg);
}

.landing-hero-bubble {
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  white-space: nowrap;
  animation: bubble-bob 3.4s ease-in-out infinite;
}

.landing-hero-person:last-child .landing-hero-bubble {
  animation-delay: 0.4s;
}

.landing-hero-link {
  font-size: var(--fs-xl);
  color: var(--color-text-muted);
}

.landing-hero-langs {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.landing-hero-lang {
  position: absolute;
  padding: 5px var(--space-3);
  border-radius: var(--radius-full);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  color: var(--color-text-secondary);
  opacity: 0.9;
  animation: float-a 5s ease-in-out infinite;
}

.landing-hero-lang:nth-child(1) { top: -6px; left: 2%; }
.landing-hero-lang:nth-child(2) { top: 18%; right: -2%; animation-name: float-b; animation-duration: 4.2s; }
.landing-hero-lang:nth-child(3) { bottom: 6%; left: -4%; animation-duration: 6s; }
.landing-hero-lang:nth-child(4) { bottom: -10px; right: 8%; animation-name: float-b; animation-duration: 5.4s; }
.landing-hero-lang:nth-child(5) { top: 48%; left: 42%; animation-duration: 4.6s; }

@keyframes bubble-bob {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

/* ---------- Sections génériques ---------- */
.landing-section {
  padding: var(--space-16) var(--space-6);
}

.landing-section-alt {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.landing-section-head {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  text-align: center;
  max-width: 560px;
  margin: 0 auto var(--space-10);
}

.landing-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  background: rgba(217, 114, 76, 0.12);
  color: var(--color-primary-dark);
  font-size: var(--fs-xs);
  font-weight: var(--fw-bold);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.landing-section-title {
  font-size: clamp(1.5rem, 3.4vw, 2.1rem);
  font-weight: var(--fw-extrabold);
  letter-spacing: -0.02em;
  line-height: 1.25;
}

.landing-section-subtitle {
  color: var(--color-text-secondary);
  font-size: var(--fs-md);
  line-height: 1.6;
}

/* ---------- Comment ça marche ---------- */
.landing-steps {
  display: grid;
  gap: var(--space-5);
  max-width: 960px;
  margin: 0 auto;
  grid-template-columns: 1fr;
}

@media (min-width: 720px) {
  .landing-steps {
    grid-template-columns: repeat(3, 1fr);
  }
}

.landing-step-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-6);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: transform var(--duration-normal) var(--ease-standard),
              box-shadow var(--duration-normal) var(--ease-standard);
}

.landing-step-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.landing-step-number {
  font-size: var(--fs-2xl);
  font-weight: var(--fw-extrabold);
  color: var(--color-primary-light);
}

.landing-step-card h3 {
  font-size: var(--fs-lg);
  font-weight: var(--fw-bold);
}

.landing-step-card p {
  color: var(--color-text-secondary);
  font-size: var(--fs-sm);
  line-height: 1.55;
}

/* ---------- Anonymat ---------- */
.landing-anon {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-10);
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}

.landing-anon-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-6);
}

.landing-anon-avatar {
  width: 84px;
  height: 84px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-full);
  background: var(--gradient-brand);
  font-size: 2.2rem;
  box-shadow: var(--shadow-brand);
}

.landing-anon-avatar:last-child {
  background: var(--gradient-live);
}

.landing-anon-link {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
}

.landing-anon-link-dots {
  display: flex;
  gap: 5px;
}

.landing-anon-link-dots span {
  width: 6px;
  height: 6px;
  border-radius: var(--radius-full);
  background: var(--color-secondary);
  animation: pulse 1.6s ease-in-out infinite;
}

.landing-anon-link-dots span:nth-child(2) { animation-delay: 0.2s; }
.landing-anon-link-dots span:nth-child(3) { animation-delay: 0.4s; }

/* ---------- Langues ---------- */
.landing-lang-pills {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  max-width: 640px;
  margin: 0 auto;
}

.landing-lang-pill {
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-full);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--color-text-primary);
  transition: transform var(--duration-fast) var(--ease-standard),
              border-color var(--duration-fast) var(--ease-standard),
              color var(--duration-fast) var(--ease-standard);
}

.landing-lang-pill:hover {
  transform: translateY(-2px) scale(1.04);
  border-color: var(--color-primary);
  color: var(--color-primary-dark);
}

/* ---------- CTA final ---------- */
.landing-cta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-5);
  text-align: center;
  max-width: 560px;
  margin: 0 auto;
  padding: var(--space-10) var(--space-8);
  background: var(--gradient-brand);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  color: var(--color-text-inverse);
}

.landing-cta .landing-section-title {
  color: var(--color-text-inverse);
}

.landing-cta p {
  color: rgba(255, 250, 245, 0.88);
  font-size: var(--fs-md);
}

.landing-cta .btn-primary {
  background: var(--color-white);
  color: var(--color-primary-dark);
  box-shadow: var(--shadow-md);
  padding: 16px var(--space-8);
}

/* ---------- Footer ---------- */
.landing-footer {
  padding: var(--space-6);
  text-align: center;
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
}

/* ---------- Apparition au scroll ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity var(--duration-slow) var(--ease-standard),
              transform var(--duration-slow) var(--ease-standard);
}

.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

.landing-footer-link {
  display: block;
  margin-top: var(--space-2);
  color: var(--color-text-secondary);
  text-decoration: underline;
}