/* ================================================================
   HORIZON EXPERIENCE — Conference Landing
   style.css
   ================================================================ */

/* ---------------------------------------------------------------
   1. TOKENS (design-brief §14)
   --------------------------------------------------------------- */
:root {
  /* Fonds */
  --horizon-bg:            #05091F;
  --horizon-bg-card:       #0d1229;
  --horizon-bg-card-lift:  #131a38;
  --horizon-bg-hover:      #161c3a;
  --horizon-bg-overlay:    #090e26;

  /* Bordures */
  --horizon-border:        #1f2747;
  --horizon-border-strong: #2a3457;

  /* Accent — Electric Blue */
  --horizon-accent:        #03A1EF;
  --horizon-accent-bright: #38b8f3;
  --horizon-accent-dim:    #0477b0;
  --horizon-accent-glow:   rgba(3, 161, 239, 0.22);

  /* Signal — Coral */
  --horizon-warm:          #E46F71;
  --horizon-warm-dim:      #b7545e;
  --horizon-warm-glow:     rgba(228, 111, 113, 0.2);

  /* Tertiaire */
  --horizon-soft:          #7488B0;
  --horizon-soft-dim:      #52648c;

  /* Utilitaires */
  --horizon-success:       #86EFAC;
  --horizon-text:          #d4d4d4;
  --horizon-text-bright:   #fafafa;
  --horizon-text-dim:      #666c84;
  --horizon-text-whisper:  #3a4566;

  /* Typographie */
  --font-display: 'Fraunces', Georgia, 'Times New Roman', serif;
  --font-sans:    -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  --font-mono:    'JetBrains Mono', 'SF Mono', Menlo, Monaco, Consolas, monospace;

  /* Rayons */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 18px;
  --radius-xl: 28px;

  /* Ombres & Glows */
  --shadow-card: 0 24px 60px -22px rgba(0, 0, 0, 0.6),
                 0 2px 8px rgba(0, 0, 0, 0.4);
  --shadow-lift: 0 42px 80px -28px rgba(0, 0, 0, 0.75),
                 0 2px 12px rgba(0, 0, 0, 0.5);
  --glow-accent: 0 0 32px rgba(3, 161, 239, 0.32);
  --glow-warm:   0 0 32px rgba(228, 111, 113, 0.28);

  /* Bouton texte (sur fond accent) */
  --horizon-btn-text: #001523;
}

/* ---------------------------------------------------------------
   2. RESET
   --------------------------------------------------------------- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: auto;
}

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--horizon-text);
  background: var(--horizon-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "ss01" on, "cv11" on;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--horizon-accent);
  text-decoration: none;
  transition: color 0.3s;
}

a:hover {
  color: var(--horizon-accent-bright);
}

ul, ol {
  list-style: none;
}

/* ---------------------------------------------------------------
   3. STARFIELD (design-brief §4)
   --------------------------------------------------------------- */
.horizon-starfield {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(1px 1px at 17% 12%, rgba(255, 255, 255, 0.65) 50%, transparent 100%),
    radial-gradient(1px 1px at 63% 8%,  rgba(255, 255, 255, 0.42) 50%, transparent 100%),
    radial-gradient(1px 1px at 84% 24%, rgba(255, 255, 255, 0.55) 50%, transparent 100%),
    radial-gradient(1.5px 1.5px at 41% 32%, rgba(3, 161, 239, 0.45) 50%, transparent 100%),
    radial-gradient(1px 1px at 8% 45%,  rgba(255, 255, 255, 0.32) 50%, transparent 100%),
    radial-gradient(1px 1px at 92% 58%, rgba(255, 255, 255, 0.48) 50%, transparent 100%),
    radial-gradient(1px 1px at 27% 72%, rgba(255, 255, 255, 0.38) 50%, transparent 100%),
    radial-gradient(1.5px 1.5px at 68% 80%, rgba(228, 111, 113, 0.40) 50%, transparent 100%),
    radial-gradient(1px 1px at 52% 91%, rgba(255, 255, 255, 0.52) 50%, transparent 100%),
    radial-gradient(1px 1px at 14% 96%, rgba(255, 255, 255, 0.28) 50%, transparent 100%),
    radial-gradient(1px 1px at 38% 55%, rgba(255, 255, 255, 0.36) 50%, transparent 100%),
    radial-gradient(1px 1px at 76% 42%, rgba(255, 255, 255, 0.44) 50%, transparent 100%);
  opacity: 0.9;
  animation: sf-breathe 14s ease-in-out infinite;
}

.horizon-starfield::after {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 70% 45% at 20% 12%, rgba(3, 161, 239, 0.14), transparent 70%),
    radial-gradient(ellipse 55% 50% at 88% 78%, rgba(228, 111, 113, 0.08), transparent 72%),
    radial-gradient(ellipse 100% 60% at 50% 120%, rgba(3, 161, 239, 0.06), transparent 70%);
}

@keyframes sf-breathe {
  0%, 100% { opacity: 0.72; }
  50%      { opacity: 1; }
}

/* ---------------------------------------------------------------
   4. TYPOGRAPHIE
   --------------------------------------------------------------- */
.display-xl {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 7vw, 5.75rem);
  font-weight: 500;
  line-height: 1.05;
  letter-spacing: -0.02em;
  font-optical-sizing: auto;
  color: var(--horizon-text-bright);
}

.display-lg {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 5vw, 3.5rem);
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: -0.02em;
  font-optical-sizing: auto;
  color: var(--horizon-text-bright);
}

.display-md {
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3vw, 2.1rem);
  font-weight: 500;
  line-height: 1.25;
  letter-spacing: -0.015em;
  font-optical-sizing: auto;
  color: var(--horizon-text-bright);
}

.eyebrow {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.28em;
  color: var(--horizon-soft);
  margin-bottom: 1.5rem;
}

.accent {
  color: var(--horizon-accent);
  font-style: italic;
  font-weight: 700;
}

/* ---------------------------------------------------------------
   5. LAYOUT
   --------------------------------------------------------------- */
.section {
  position: relative;
  z-index: 1;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(4rem, 10vw, 8rem) clamp(1.5rem, 4vw, 3rem);
}

.section--full {
  min-height: 100vh;
  min-height: 100dvh;
}

.inner {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
}

.inner--narrow {
  max-width: 820px;
}

.inner--center {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* Solid bg on sections below pinned Grand Message */
#paliers,
#deroule,
#palier-cache,
#interaction,
#experience,
#inclus,
#speakers,
#logistique,
#cta,
.site-footer {
  background: var(--horizon-bg);
  z-index: 2;
}

/* ---------------------------------------------------------------
   6. HEADER
   --------------------------------------------------------------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1.25rem clamp(1.5rem, 4vw, 3rem);
  pointer-events: none;
}

.site-header__logo {
  pointer-events: auto;
  height: 28px;
  width: auto;
  opacity: 0.75;
  transition: opacity 0.3s;
}

.site-header__logo:hover {
  opacity: 1;
}

/* ---------------------------------------------------------------
   7. HERO (Section 1)
   --------------------------------------------------------------- */
.section--hero {
  flex-direction: column;
  text-align: center;
  padding-top: 6rem;
}

.hero__title {
  max-width: 15ch;
  margin: 0 auto 2rem;
}

.hero__title .word {
  display: inline-block;
  opacity: 0;
  transform: translateY(18px);
}

.hero__subtitle {
  font-size: clamp(1rem, 1.8vw, 1.2rem);
  color: var(--horizon-text-dim);
  max-width: 520px;
  margin: 0 auto;
}

.hero__scroll {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 2rem;
  color: var(--horizon-soft);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  text-decoration: none;
  transition: color 0.3s;
}

.hero__scroll:hover {
  color: var(--horizon-accent);
}

.scroll-line {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, var(--horizon-accent), transparent);
  animation: scroll-pulse 2.2s ease-in-out infinite;
}

@keyframes scroll-pulse {
  0%, 100% { opacity: 0.3; height: 48px; }
  50%      { opacity: 1;   height: 56px; }
}

/* --- Scroll hint (souris + chevrons) --- */
.scroll-hint {
  position: fixed;
  bottom: clamp(1.5rem, 4vw, 2.5rem);
  left: 50%;
  transform: translateX(-50%);
  z-index: 999;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  color: var(--horizon-soft);
  opacity: 0.6;
  transition: opacity 0.5s;
  pointer-events: none;
}

.scroll-hint__wheel {
  animation: hint-wheel 1.8s ease-in-out infinite;
}

@keyframes hint-wheel {
  0%        { transform: translateY(0); opacity: 1; }
  40%       { transform: translateY(3px); opacity: 0; }
  80%, 100% { transform: translateY(0); opacity: 1; }
}

.scroll-hint__chevrons {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}

.scroll-hint__chevrons svg:nth-child(1) {
  animation: hint-chevron 1.8s ease-in-out infinite;
}

.scroll-hint__chevrons svg:nth-child(2) {
  animation: hint-chevron 1.8s ease-in-out infinite 0.2s;
}

@keyframes hint-chevron {
  0%, 100% { opacity: 0.3; transform: translateY(0); }
  50%      { opacity: 1;   transform: translateY(3px); }
}

/* ---------------------------------------------------------------
   8. LE PARI (Section 2)
   --------------------------------------------------------------- */
.pari__text {
  line-height: 1.5;
  max-width: 720px;
}

/* ---------------------------------------------------------------
   9. GRAND MESSAGE — pinned (Section 3)
   --------------------------------------------------------------- */
.section--message {
  min-height: 400vh;
  align-items: flex-start;
  padding: 0;
  z-index: 1;
}

.message__pin {
  width: 100%;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 0 clamp(1.5rem, 4vw, 3rem);
}

.message__phrase {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 7vw, 5.5rem);
  font-weight: 500;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--horizon-text-bright);
  max-width: 16ch;
}

.message__phrase .word {
  display: inline-block;
  opacity: 0;
  transform: translateY(20px);
  filter: blur(10px);
  transition: color 0.4s, text-shadow 0.4s;
}

.message__phrase .word.is-revealed {
  opacity: 1;
  transform: translateY(0);
  filter: blur(0);
}

.message__phrase .word.is-accent {
  color: var(--horizon-accent);
  text-shadow: 0 0 32px rgba(3, 161, 239, 0.4);
}

.message__line {
  display: block;
}

.message__followup {
  margin-top: 3rem;
  max-width: 580px;
  text-align: center;
  font-size: clamp(1rem, 1.4vw, 1.12rem);
  color: var(--horizon-text-dim);
  line-height: 1.7;
  opacity: 0;
  transform: translateY(20px);
}

/* ---------------------------------------------------------------
   10. 3 PALIERS + CARTE VERROUILLÉE (Section 4)
   --------------------------------------------------------------- */
.paliers__head {
  text-align: center;
  margin-bottom: clamp(3rem, 6vw, 5rem);
}

.paliers__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1.25rem, 2.5vw, 2rem);
}

.palier__timing {
  font-weight: 400;
  letter-spacing: 0.12em;
  color: var(--horizon-text-dim);
  text-transform: none;
  margin-left: 0.5em;
}

.paliers__locked-wrap {
  display: flex;
  justify-content: center;
  margin-top: clamp(3rem, 5vw, 4.5rem);
}

.card--locked {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 520px;
  width: 100%;
  padding: clamp(1.75rem, 3vw, 2.5rem);
  background: linear-gradient(180deg, rgba(19, 26, 56, 0.6) 0%, rgba(13, 18, 41, 0.88) 100%);
  border: 1px solid var(--horizon-border);
  border-radius: var(--radius-xl);
  text-align: center;
  overflow: hidden;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  opacity: 0;
  transform: translateY(30px);
}

.card--locked .card__title {
  color: var(--horizon-text-bright);
}

.card--locked .card__desc {
  filter: blur(1.5px);
  color: var(--horizon-text);
  user-select: none;
}

.card--locked .lock-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  margin: 0 auto 1rem;
  border-radius: 50%;
  background: rgba(3, 161, 239, 0.08);
  border: 1px solid var(--horizon-accent-dim);
}

.card--locked .lock-icon svg {
  width: 18px;
  height: 18px;
  stroke: var(--horizon-accent);
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.card--locked::before {
  content: '';
  position: absolute;
  top: 0;
  left: 2.5rem;
  right: 2.5rem;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--horizon-accent), transparent);
  opacity: 0.25;
}

/* ---------------------------------------------------------------
   11. TIMELINE (Section 5)
   --------------------------------------------------------------- */
.section--timeline {
  padding-top: clamp(4rem, 8vw, 6rem);
  padding-bottom: clamp(4rem, 8vw, 6rem);
}

.tl__head {
  text-align: center;
  margin-bottom: clamp(3rem, 6vw, 5rem);
}

.tl {
  position: relative;
  max-width: 1000px;
  margin: 0 auto;
}

.tl__svg {
  position: absolute;
  left: 50%;
  top: 0;
  transform: translateX(-50%);
  width: 4px;
  height: 100%;
  overflow: visible;
}

.tl__bg {
  stroke: var(--horizon-border);
  stroke-width: 2;
}

.tl__progress {
  stroke: var(--horizon-accent);
  stroke-width: 2;
  stroke-linecap: round;
  filter: drop-shadow(0 0 6px rgba(3, 161, 239, 0.5));
}

.tl__items {
  display: flex;
  flex-direction: column;
  gap: clamp(2.5rem, 5vw, 4rem);
}

.tl__row {
  display: grid;
  grid-template-columns: 1fr 56px 1fr;
  align-items: start;
  opacity: 0;
  transform: translateX(30px);
}

.tl__row.is-visible {
  opacity: 1;
  transform: translateX(0);
}

/* Alternance gauche / droite */
.tl__row:nth-child(odd) .tl__content  { grid-column: 1; grid-row: 1; text-align: right; padding-right: 1rem; }
.tl__row:nth-child(odd) .tl__dot-wrap { grid-column: 2; grid-row: 1; }
.tl__row:nth-child(odd) .tl__spacer   { grid-column: 3; grid-row: 1; }

.tl__row:nth-child(even) .tl__spacer   { grid-column: 1; grid-row: 1; }
.tl__row:nth-child(even) .tl__dot-wrap { grid-column: 2; grid-row: 1; }
.tl__row:nth-child(even) .tl__content  { grid-column: 3; grid-row: 1; text-align: left; padding-left: 1rem; }

.tl__dot-wrap {
  display: flex;
  justify-content: center;
  padding-top: 0.5rem;
}

.tl__dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--horizon-bg-card);
  border: 2px solid var(--horizon-border);
  transition: all 0.4s;
  position: relative;
  z-index: 2;
}

.tl__dot.is-active {
  background: var(--horizon-accent);
  border-color: var(--horizon-accent);
  box-shadow: 0 0 16px var(--horizon-accent-glow);
  transform: scale(1.2);
}

.tl__dot--special {
  width: 18px;
  height: 18px;
}

.tl__dot--special.is-active {
  box-shadow: 0 0 24px rgba(3, 161, 239, 0.4);
  transform: scale(1.35);
}

.tl__time {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--horizon-accent);
  margin-bottom: 0.5rem;
  display: block;
}

.tl__title {
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 1.8vw, 1.3rem);
  font-weight: 500;
  color: var(--horizon-text-bright);
  margin-bottom: 0.4rem;
  letter-spacing: -0.01em;
}

.tl__desc {
  font-size: 0.88rem;
  color: var(--horizon-text-dim);
  line-height: 1.6;
}

/* ---------------------------------------------------------------
   12. PALIER CACHÉ (Section 6)
   --------------------------------------------------------------- */
.cache__text {
  font-size: clamp(1.02rem, 1.6vw, 1.15rem);
  line-height: 1.75;
  max-width: 700px;
  margin-bottom: 3rem;
}

.cache__text p + p {
  margin-top: 1.4rem;
}

.cache__text strong {
  color: var(--horizon-text-bright);
  font-weight: 600;
}

.cache__reveal {
  position: relative;
  padding: clamp(2rem, 4vw, 3rem);
  background: linear-gradient(180deg, rgba(19, 26, 56, 0.6) 0%, rgba(13, 18, 41, 0.88) 100%);
  border: 1px solid var(--horizon-border);
  border-radius: var(--radius-xl);
  max-width: 700px;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  overflow: hidden;
}

.cache__reveal::before {
  content: '';
  position: absolute;
  top: 0;
  left: 2rem;
  right: 2rem;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--horizon-warm), transparent);
  box-shadow: 0 0 14px var(--horizon-warm);
}

.cache__reveal p {
  font-size: clamp(1rem, 1.4vw, 1.08rem);
  line-height: 1.7;
}

.cache__reveal strong {
  color: var(--horizon-text-bright);
  font-weight: 600;
}

/* ---------------------------------------------------------------
   12b. INTERACTION — formats vivants + cinéma
   --------------------------------------------------------------- */
.interact__head { text-align: center; margin-bottom: clamp(3rem, 6vw, 5rem); }

/* ====== CINÉMA — vidéo qui s'étend au scroll ====== */
.cinema {
  position: relative;
  /* Full-bleed: échappe au max-width du .inner */
  width: 100vw;
  margin-left: calc(50% - 50vw);
  margin-right: calc(50% - 50vw);
  height: 100vh;
  height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin-top: clamp(2rem, 4vw, 3.5rem);
  margin-bottom: clamp(2rem, 4vw, 3.5rem);
}

.cinema__stage {
  position: relative;
  width: 62vw;
  height: 34.875vw; /* 62vw × 9/16 — aspect 16:9 */
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: 0 24px 80px -20px rgba(0, 0, 0, 0.8), 0 0 60px rgba(3, 161, 239, 0.12);
  background: #000;
  will-change: width, height, border-radius;
}

.cinema__video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.cinema__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: clamp(1rem, 3vw, 2rem);
  padding: 0 clamp(1.5rem, 4vw, 3rem);
  z-index: 2;
  text-align: center;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.4s ease, transform 0.4s ease;
  pointer-events: none;
}

.cinema__caption.is-shown {
  opacity: 1;
  transform: translateY(0);
}

.cinema__caption .eyebrow {
  color: var(--horizon-accent-bright);
  margin-bottom: 0.5rem;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.8);
}

.cinema__caption p {
  font-family: var(--font-display);
  font-size: clamp(1rem, 1.6vw, 1.4rem);
  color: var(--horizon-text-bright);
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.8);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.3;
}

/* Overlay de fin de vidéo : invitation à scroller */
.cinema__end {
  position: absolute;
  inset: 0;
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  text-align: center;
  padding: clamp(1.5rem, 4vw, 3rem);
  background: radial-gradient(ellipse at center,
    rgba(5, 9, 31, 0.55) 0%,
    rgba(5, 9, 31, 0.75) 100%);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.6s cubic-bezier(0.2, 0.9, 0.3, 1);
}

.cinema__end.is-shown {
  opacity: 1;
}

.cinema__end .eyebrow {
  color: var(--horizon-accent-bright);
  margin-bottom: 0.5rem;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.85);
}

.cinema__end-text {
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 1.8vw, 1.5rem);
  color: var(--horizon-text-bright);
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.85);
  letter-spacing: -0.01em;
}

.cinema__end-arrow {
  margin-top: 0.5rem;
  width: 28px;
  height: 28px;
  color: var(--horizon-accent-bright);
  animation: end-bounce 1.8s ease-in-out infinite;
  filter: drop-shadow(0 2px 8px rgba(3, 161, 239, 0.5));
}

.cinema__end-arrow svg {
  width: 100%;
  height: 100%;
}

@keyframes end-bounce {
  0%, 100% { transform: translateY(0); opacity: 0.7; }
  50% { transform: translateY(6px); opacity: 1; }
}

/* Voile sombre en bas pour lisibilité de la caption */
.cinema__stage::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 30%;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.55), transparent);
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}

.cinema__stage.is-cinema::after {
  opacity: 1;
}

/* Mobile : pas d'effet cinéma — vidéo dans une simple carte */
@media (max-width: 768px) {
  .cinema {
    height: auto;
    margin-top: 2rem;
    margin-bottom: 2rem;
    width: 100%;
    margin-left: 0;
    margin-right: 0;
  }
  .cinema__stage {
    width: 100%;
    height: auto;
    aspect-ratio: 16 / 9;
    max-height: none;
  }
  .cinema__caption {
    position: relative;
    bottom: auto;
    margin-top: 1rem;
    opacity: 1;
    transform: none;
  }
  .cinema__stage::after { display: none; }
  .cinema__end { display: none; }
}


.interact__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(1rem, 2vw, 1.5rem);
  max-width: 960px;
  margin: 0 auto;
}

.interact__card {
  position: relative;
  padding: 1.5rem 1.5rem 1.5rem 2rem;
  border-left: 2px solid var(--horizon-border);
  transition: border-color 0.3s ease;
}

.interact__card:hover {
  border-left-color: var(--horizon-accent);
}

.interact__title {
  font-family: var(--font-display);
  font-size: clamp(1rem, 1.6vw, 1.2rem);
  font-weight: 500;
  color: var(--horizon-text-bright);
  margin-bottom: 0.4rem;
  letter-spacing: -0.01em;
}

.interact__desc {
  font-size: 0.88rem;
  color: var(--horizon-text-dim);
  line-height: 1.55;
}

/* Last item spanning full width when odd count */
.interact__grid > :last-child:nth-child(odd) {
  grid-column: 1 / -1;
  max-width: 50%;
}

@media (max-width: 768px) {
  .interact__grid {
    grid-template-columns: 1fr;
  }
  .interact__grid > :last-child:nth-child(odd) {
    max-width: 100%;
  }
}

/* ---------------------------------------------------------------
   13. EXPÉRIENCE GRID (Section 7)
   --------------------------------------------------------------- */
.exp__head {
  text-align: center;
  margin-bottom: clamp(3rem, 6vw, 5rem);
}

.exp__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(1.25rem, 2.5vw, 2rem);
  max-width: 1000px;
  margin: 0 auto;
}

/* ---------------------------------------------------------------
   14. CE QUI EST INCLUS (Section 8)
   --------------------------------------------------------------- */
.inc__head {
  text-align: center;
  margin-bottom: clamp(3rem, 6vw, 5rem);
}

.inc__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem 3rem;
  max-width: 900px;
  margin: 0 auto;
}

.inc__item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px dashed var(--horizon-border);
}

.inc__dot {
  flex-shrink: 0;
  width: 6px;
  height: 6px;
  margin-top: 0.55rem;
  border-radius: 50%;
  background: var(--horizon-accent);
  box-shadow: 0 0 8px var(--horizon-accent-glow);
}

.inc__text {
  font-size: 1rem;
  line-height: 1.6;
}

/* ---------------------------------------------------------------
   15. SPEAKERS (Section 9)
   --------------------------------------------------------------- */
.spk__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(2rem, 4vw, 4rem);
  max-width: 800px;
  margin: 0 auto clamp(2.5rem, 5vw, 4rem);
}

.spk {
  text-align: center;
}

.spk__photo-wrap {
  width: clamp(180px, 22vw, 240px);
  height: clamp(180px, 22vw, 240px);
  margin: 0 auto 1.5rem;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: 0 0 60px rgba(3, 161, 239, 0.18);
  transition: transform 0.4s cubic-bezier(0.2, 0.9, 0.3, 1),
              box-shadow 0.4s;
}

.spk__photo-wrap:hover {
  transform: translateY(-4px);
  box-shadow: 0 0 80px rgba(3, 161, 239, 0.28);
}

/* Émilie — halo warm/coral */
.spk:nth-child(2) .spk__photo-wrap {
  box-shadow: 0 0 60px rgba(228, 111, 113, 0.18);
}

.spk:nth-child(2) .spk__photo-wrap:hover {
  box-shadow: 0 0 80px rgba(228, 111, 113, 0.28);
}

.spk__photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.spk__name {
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.2vw, 1.6rem);
  font-weight: 500;
  color: var(--horizon-text-bright);
  margin-bottom: 0.4rem;
}

.spk__role {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--horizon-soft);
  line-height: 1.7;
}

.spk__bio {
  max-width: 680px;
  margin: 0 auto;
  text-align: center;
  font-size: clamp(1rem, 1.4vw, 1.08rem);
  color: var(--horizon-text-dim);
  line-height: 1.7;
}

/* ---------------------------------------------------------------
   16. LOGISTIQUE (Section 10)
   --------------------------------------------------------------- */
.logi__head {
  text-align: center;
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}

.logi__table {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  max-width: 700px;
  margin: 0 auto;
  border: 1px solid var(--horizon-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.logi__cell {
  padding: clamp(1.5rem, 3vw, 2.5rem);
  text-align: center;
  border-right: 1px solid var(--horizon-border);
}

.logi__cell:last-child {
  border-right: none;
}

.logi__val {
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 2.2vw, 1.6rem);
  font-weight: 500;
  color: var(--horizon-text-bright);
  margin-bottom: 0.4rem;
}

.logi__label {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--horizon-soft);
}

/* ---------------------------------------------------------------
   17. CTA (Section 11)
   --------------------------------------------------------------- */
.section--cta {
  flex-direction: column;
  text-align: center;
}

/* ---------------------------------------------------------------
   18. BOUTONS (design-brief §5.4)
   --------------------------------------------------------------- */
.horizon-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1.1rem 2.5rem;
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  font-size: 1.05rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.3s cubic-bezier(0.2, 0.9, 0.3, 1);
  position: relative;
}

.horizon-btn--primary {
  background: var(--horizon-accent);
  color: var(--horizon-btn-text);
  box-shadow: 0 0 0 1px var(--horizon-accent-dim),
              var(--glow-accent);
}

.horizon-btn--primary:hover {
  background: var(--horizon-accent-bright);
  color: var(--horizon-btn-text);
  transform: translateY(-2px);
  box-shadow: 0 0 0 1px var(--horizon-accent-bright),
              0 0 44px rgba(3, 161, 239, 0.42);
}

.horizon-btn--primary:active {
  transform: translateY(0);
}

.horizon-btn--primary::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: var(--radius-md);
  animation: pulse-accent 2.2s ease-out infinite;
}

.horizon-btn__arrow {
  transition: transform 0.3s cubic-bezier(0.2, 0.9, 0.3, 1);
}

.horizon-btn:hover .horizon-btn__arrow {
  transform: translateX(4px);
}

/* ---------------------------------------------------------------
   19. FOOTER (Section 12)
   --------------------------------------------------------------- */
.site-footer {
  border-top: 1px dashed var(--horizon-border);
  padding: clamp(2rem, 4vw, 3rem) clamp(1.5rem, 4vw, 3rem);
}

.footer__inner {
  max-width: 1180px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.footer__logo {
  height: 20px;
  width: auto;
  opacity: 0.5;
}

.footer__copy {
  font-size: 0.82rem;
  color: var(--horizon-text-dim);
}

.footer__mail {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
}

/* ---------------------------------------------------------------
   20. CARTE HORIZON (design-brief §5.2)
   --------------------------------------------------------------- */
.card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: clamp(1.75rem, 3vw, 2.5rem);
  background: linear-gradient(180deg,
    rgba(19, 26, 56, 0.6) 0%,
    rgba(13, 18, 41, 0.88) 100%);
  border: 1px solid var(--horizon-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition:
    transform 0.3s cubic-bezier(0.2, 0.9, 0.3, 1),
    border-color 0.3s,
    box-shadow 0.3s,
    background 0.3s;
}

/* Ligne accent top */
.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 2.5rem;
  right: 2.5rem;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--horizon-accent), transparent);
  opacity: 0.5;
  transition: opacity 0.3s, box-shadow 0.3s;
}

/* Halo radial */
.card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 15% 0%,
    rgba(3, 161, 239, 0.08) 0%, transparent 55%);
  opacity: 0;
  transition: opacity 0.35s;
  pointer-events: none;
}

/* Hover — 5 changements simultanés */
.card:hover {
  transform: translateY(-4px);
  border-color: var(--horizon-border-strong);
  box-shadow: var(--shadow-lift);
  background: linear-gradient(180deg,
    rgba(22, 28, 58, 0.75) 0%,
    rgba(13, 18, 41, 0.92) 100%);
}

.card:hover::before {
  opacity: 1;
  box-shadow: 0 0 14px var(--horizon-accent);
}

.card:hover::after {
  opacity: 1;
}

/* Ligne illuminée (ajoutée par JS) */
.card--lit::before {
  opacity: 1;
  box-shadow: 0 0 14px var(--horizon-accent);
  transition: opacity 0.4s, box-shadow 0.4s;
}

.card__idx {
  position: absolute;
  top: 1.5rem;
  right: 1.75rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--horizon-text-whisper);
  letter-spacing: 0.15em;
}

.card__title {
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 1.8vw, 1.35rem);
  font-weight: 500;
  color: var(--horizon-text-bright);
  letter-spacing: -0.01em;
}

.card__desc {
  font-size: 0.9rem;
  color: var(--horizon-text-dim);
  line-height: 1.65;
}

/* ---------------------------------------------------------------
   21. ANIMATIONS KEYFRAMES
   --------------------------------------------------------------- */
@keyframes fade-up {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes pulse-accent {
  0%   { box-shadow: 0 0 0 0 rgba(3, 161, 239, 0.55); }
  70%  { box-shadow: 0 0 0 18px rgba(3, 161, 239, 0); }
  100% { box-shadow: 0 0 0 0 rgba(3, 161, 239, 0); }
}

/* État initial des éléments animés par JS */
[data-anim] {
  opacity: 0;
  transform: translateY(14px);
}

/* ---------------------------------------------------------------
   22. FOCUS & ACCESSIBILITÉ
   --------------------------------------------------------------- */
*:focus {
  outline: none;
}

*:focus-visible {
  outline: 2px solid var(--horizon-accent);
  outline-offset: 3px;
  border-radius: 4px;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .horizon-starfield {
    animation: none;
    opacity: 0.85;
  }

  .scroll-line {
    animation: none;
    opacity: 0.5;
  }
}

/* ---------------------------------------------------------------
   23. SCROLLBARS
   --------------------------------------------------------------- */
html {
  scrollbar-width: thin;
  scrollbar-color: var(--horizon-border-strong) transparent;
}

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--horizon-border-strong);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--horizon-soft-dim);
}

/* ---------------------------------------------------------------
   24. RESPONSIVE
   --------------------------------------------------------------- */

/* Large desktop */
@media (min-width: 1440px) {
  .inner {
    max-width: 1280px;
  }
}

/* Tablet / small desktop */
@media (max-width: 1024px) {
  .paliers__grid {
    grid-template-columns: 1fr;
    max-width: 520px;
    margin: 0 auto;
  }
}

/* Mobile */
@media (max-width: 768px) {
  .section {
    padding: clamp(3rem, 8vw, 5rem) 1.25rem;
  }

  /* Timeline → tout à droite */
  .tl__row {
    grid-template-columns: 40px 1fr;
    transform: translateX(20px);
  }

  .tl__row:nth-child(odd) .tl__content,
  .tl__row:nth-child(even) .tl__content {
    grid-column: 2;
    grid-row: 1;
    text-align: left;
    padding-left: 0.75rem;
    padding-right: 0;
  }

  .tl__row:nth-child(odd) .tl__dot-wrap,
  .tl__row:nth-child(even) .tl__dot-wrap {
    grid-column: 1;
    grid-row: 1;
  }

  .tl__row:nth-child(odd) .tl__spacer,
  .tl__row:nth-child(even) .tl__spacer {
    display: none;
  }

  .tl__svg {
    left: 20px;
    transform: none;
  }

  /* Grilles en 1 colonne */
  .exp__grid {
    grid-template-columns: 1fr;
    max-width: 500px;
    margin: 0 auto;
  }

  .inc__grid {
    grid-template-columns: 1fr;
  }

  .spk__grid {
    grid-template-columns: 1fr;
    max-width: 320px;
  }

  .logi__table {
    grid-template-columns: 1fr;
  }

  .logi__cell {
    border-right: none;
    border-bottom: 1px solid var(--horizon-border);
  }

  .logi__cell:last-child {
    border-bottom: none;
  }

  .message__phrase {
    font-size: clamp(2rem, 9vw, 5rem);
  }

  .footer__inner {
    flex-direction: column;
    text-align: center;
  }
}

/* Small mobile */
@media (max-width: 420px) {
  .card {
    padding: 1.5rem;
    border-radius: var(--radius-lg);
  }

  .card::before {
    left: 1.5rem;
    right: 1.5rem;
  }

  .tarif__amount {
    font-size: 3.5rem;
  }
}