/* Layout : une soirée = un site sombre, bleu nuit Flatchr ; le teal éclaire, l'orange sert uniquement à l'action (s'inscrire).
   Palette Flatchr : primaires #01AEC8 #019BB2 #016D7D, orange #FF9C11, navy #12435E. */
:root {
  --night: #0a2433;      /* fond : navy approfondi */
  --navy: #12435e;       /* surfaces */
  --navy-line: #1f5876;  /* filets et bordures */
  --teal: #01aec8;
  --teal-mid: #019bb2;
  --teal-deep: #016d7d;
  --orange: #ff9c11;
  --ink: #eef7f9;        /* texte principal, blanc légèrement teinté teal */
  --muted: #a7c3cd;      /* texte secondaire */

  --font-display: "Bricolage Grotesque", "Trebuchet MS", system-ui, sans-serif;
  --font-body: "Figtree", "Segoe UI", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;

  --step--1: 0.85rem;
  --step-0: 1rem;
  --step-1: 1.25rem;
  --step-2: 1.6rem;
  --step-3: clamp(2rem, 4vw, 2.6rem);
  --step-4: clamp(2.6rem, 8vw, 5.4rem);

  --wrap: 72rem;
  --gutter: clamp(1rem, 4vw, 2.5rem);
  --radius: 14px;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { animation: none !important; transition: none !important; } }

body {
  margin: 0;
  background: var(--night);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--step-0);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--teal); text-underline-offset: 3px; }
a:hover { color: var(--ink); }
:focus-visible { outline: 2px solid var(--orange); outline-offset: 3px; border-radius: 4px; }

h1, h2, h3 { font-family: var(--font-display); line-height: 1.05; text-wrap: balance; margin: 0; letter-spacing: -0.02em; }
h2 { font-size: var(--step-3); font-weight: 700; }
h3 { font-size: var(--step-1); font-weight: 600; letter-spacing: -0.01em; }
p { margin: 0; }

.wrap { max-width: var(--wrap); margin-inline: auto; padding-inline: var(--gutter); }

.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--teal);
}

/* Contenu provisoire : à retirer une fois les infos validées (supprimer la classe .a-completer dans le HTML) */
.a-completer { text-decoration: underline dotted var(--orange); text-decoration-thickness: 2px; text-underline-offset: 4px; }
.draft-note {
  background: var(--orange);
  color: var(--night);
  font-size: var(--step--1);
  font-weight: 600;
  text-align: center;
  padding: 0.45rem var(--gutter);
}

/* En-tête */
.site-header {
  position: sticky;
  top: env(safe-area-inset-top, 0px);
  z-index: 10;
  background: color-mix(in srgb, var(--night) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--navy-line);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; padding-block: 0.9rem; }
.brand { font-family: var(--font-display); font-weight: 800; font-size: 1.4rem; color: var(--ink); text-decoration: none; letter-spacing: -0.03em; }
.brand { display: inline-flex; line-height: 0; }
.brand img { height: 2.1rem; width: auto; display: block; }
.nav { display: flex; gap: 0.25rem; flex-wrap: wrap; }
.nav a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 500;
  padding: 0.4rem 0.8rem;
  border-radius: 999px;
}
.nav a:hover { color: var(--ink); background: var(--navy); }
.nav a[aria-current="page"] { color: var(--night); background: var(--teal); }

/* Boutons */
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-family: var(--font-body); font-weight: 700; font-size: var(--step-0);
  padding: 0.85rem 1.4rem;
  border-radius: 999px;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--orange); color: var(--night); }
.btn-primary:hover { color: var(--night); background: #ffb040; }
.btn-ghost { border-color: var(--navy-line); color: var(--ink); }
.btn-ghost:hover { border-color: var(--teal); color: var(--ink); }

/* Hero d'accueil */
.hero { position: relative; overflow: hidden; padding-block: clamp(3rem, 8vw, 6rem) clamp(3rem, 6vw, 5rem); }
.hero::before {
  content: "";
  position: absolute; inset: -30% -10% auto auto;
  width: 60rem; height: 60rem; max-width: 140%;
  background: radial-gradient(circle at center, color-mix(in srgb, var(--teal) 35%, transparent), transparent 60%);
  pointer-events: none;
}
.hero .wrap { position: relative; display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); gap: clamp(2rem, 5vw, 4rem); align-items: center; }
.hero-text { display: grid; gap: 1.5rem; min-width: 0; }
.hero h1 { font-size: var(--step-4); font-weight: 800; }
.hero h1 em { font-style: normal; color: var(--teal); }
.hero .lead { font-size: var(--step-1); color: var(--muted); max-width: 34ch; }
.hero-actions { display: flex; gap: 0.75rem; flex-wrap: wrap; }

/* Carton d'invitation (ticket) */
.ticket {
  position: relative;
  background: linear-gradient(160deg, var(--teal-mid), var(--teal-deep));
  color: var(--ink);
  border-radius: var(--radius);
  padding: 1.75rem;
  display: grid;
  gap: 1.25rem;
  box-shadow: 0 30px 60px -30px rgba(0, 0, 0, 0.7);
  transform: rotate(1.5deg);
  min-width: 0;
}
.ticket::before, .ticket::after {
  content: ""; position: absolute; left: -12px; right: -12px; top: 62%;
  height: 24px; pointer-events: none;
  background:
    radial-gradient(circle at 0 50%, var(--night) 11px, transparent 12px) left / 24px 24px no-repeat,
    radial-gradient(circle at 100% 50%, var(--night) 11px, transparent 12px) right / 24px 24px no-repeat;
}
.ticket::after { display: none; }
.ticket-head { display: flex; justify-content: space-between; gap: 1rem; font-family: var(--font-mono); font-size: var(--step--1); letter-spacing: 0.1em; text-transform: uppercase; opacity: 0.9; }
.ticket-title { font-family: var(--font-display); font-size: var(--step-2); font-weight: 700; line-height: 1.1; }
.ticket dl { margin: 0; display: grid; grid-template-columns: auto 1fr; gap: 0.5rem 1rem; }
.ticket dt { font-family: var(--font-mono); font-size: var(--step--1); text-transform: uppercase; letter-spacing: 0.1em; opacity: 0.8; padding-top: 0.15rem; }
.ticket dd { margin: 0; font-weight: 600; }
.ticket-foot { border-top: 2px dashed color-mix(in srgb, var(--ink) 45%, transparent); padding-top: 1.1rem; display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap; }
.ticket-foot .status { font-family: var(--font-mono); font-size: var(--step--1); letter-spacing: 0.08em; }
.ticket-foot .status b { color: var(--orange); background: var(--night); padding: 0.15rem 0.5rem; border-radius: 6px; }

/* Compte à rebours */
.countdown { display: flex; gap: 0.75rem; flex-wrap: wrap; }
.countdown div { background: var(--navy); border: 1px solid var(--navy-line); border-radius: 10px; padding: 0.6rem 0.9rem; min-width: 4.5rem; text-align: center; }
.countdown b { display: block; font-family: var(--font-mono); font-size: var(--step-2); font-variant-numeric: tabular-nums; line-height: 1.1; }
.countdown span { font-size: var(--step--1); color: var(--muted); }

/* Sections */
.section { padding-block: clamp(3rem, 7vw, 5rem); border-top: 1px solid var(--navy-line); }
.section-head { display: grid; gap: 0.75rem; margin-bottom: 2.5rem; max-width: 42rem; }
.section-head p { color: var(--muted); }

.invitation-letter { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 2fr); gap: clamp(1.5rem, 5vw, 4rem); }
.invitation-letter .body { display: grid; gap: 1rem; font-size: 1.1rem; max-width: 62ch; }
.invitation-letter .sign { color: var(--muted); font-style: italic; }

.infos { display: grid; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); gap: 1rem; }
.info { background: var(--navy); border: 1px solid var(--navy-line); border-radius: var(--radius); padding: 1.5rem; display: grid; gap: 0.5rem; align-content: start; min-width: 0; }
.info .eyebrow { color: var(--teal); }
.info h3 { margin-bottom: 0.25rem; }
.info p { color: var(--muted); }
.info p strong { color: var(--ink); font-weight: 600; }

.teaser { margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr)); gap: 0; border: 1px solid var(--navy-line); border-radius: var(--radius); overflow: hidden; }
.teaser li { list-style: none; padding: 1.25rem 1.5rem; border-right: 1px solid var(--navy-line); display: grid; gap: 0.25rem; }
.teaser li:last-child { border-right: 0; }
.teaser time { font-family: var(--font-mono); color: var(--teal); font-variant-numeric: tabular-nums; }
.center-cta { margin-top: 2rem; display: flex; gap: 0.75rem; flex-wrap: wrap; }

.cta-band { background: linear-gradient(120deg, var(--teal-deep), var(--navy)); border-radius: var(--radius); padding: clamp(2rem, 5vw, 3rem); display: flex; justify-content: space-between; align-items: center; gap: 1.5rem; flex-wrap: wrap; }
.cta-band h2 { font-size: var(--step-2); }
.cta-band p { color: var(--muted); margin-top: 0.5rem; }

/* Encart vidéo */
.sound-btn { position: absolute; left: 50%; bottom: 4.5rem; transform: translateX(-50%); z-index: 2; border: 0; cursor: pointer; font: 600 0.95rem var(--font-body); padding: 0.6rem 1.1rem; border-radius: 999px; background: var(--orange); color: var(--night); box-shadow: 0 8px 20px -8px rgba(0, 0, 0, 0.6); white-space: nowrap; }
/* Format vertical (9:16) pour le teaser */
.video-frame.hero-video { aspect-ratio: 9 / 16; width: min(100%, 20rem); justify-self: center; box-shadow: 0 30px 60px -30px rgba(0, 0, 0, 0.7); }
.video-block { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 2fr); gap: clamp(1.5rem, 5vw, 4rem); align-items: center; }
.video-block .section-head { margin-bottom: 0; }
.video-frame { position: relative; aspect-ratio: 16 / 9; max-width: 100%; border-radius: var(--radius); overflow: hidden; background: var(--navy); border: 1px solid var(--navy-line); }
.video-frame iframe, .video-frame video { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; background: var(--night); }
.video-placeholder { position: absolute; inset: 0; display: grid; place-content: center; justify-items: center; gap: 1rem; text-align: center; padding: 1.5rem; color: var(--muted);
  background: radial-gradient(circle at 70% 30%, color-mix(in srgb, var(--teal) 30%, transparent), transparent 60%), linear-gradient(160deg, var(--navy), var(--night)); }
.video-placeholder strong { color: var(--ink); font-family: var(--font-display); font-size: var(--step-1); }
.play { width: 4.5rem; height: 4.5rem; border-radius: 50%; background: var(--orange); position: relative; }
.play::after { content: ""; position: absolute; left: 54%; top: 50%; transform: translate(-50%, -50%); border-style: solid; border-width: 0.8rem 0 0.8rem 1.3rem; border-color: transparent transparent transparent var(--night); }

.bus-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.35rem; color: var(--muted); font-size: 0.9rem; line-height: 1.4; }
.bus-list li { display: grid; grid-template-columns: 2.4rem minmax(0, 1fr); gap: 0.4rem; }
.bus-list b { font-family: var(--font-mono); color: var(--ink); background: var(--navy-line); border-radius: 5px; text-align: center; font-size: 0.8rem; padding: 0.05rem 0; align-self: start; }

/* Inscription (lien vers le questionnaire Refiner) */
.signup { background: #ffffff; color: #12435e; border-radius: var(--radius); padding: clamp(1.5rem, 5vw, 3rem); display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr); gap: clamp(1.5rem, 5vw, 3rem); align-items: center; scroll-margin-top: 5rem; }
.signup .section-head { margin-bottom: 0; }
.signup .section-head .eyebrow { color: var(--teal-deep); }
.signup .section-head h2 { color: #12435e; }
.signup .section-head p:last-child { color: #3d6072; }
.signup-action { display: grid; gap: 0.75rem; justify-items: start; align-self: center; }
.signup-action p { color: #3d6072; font-size: var(--step--1); }
.btn-lg { font-size: var(--step-1); padding: 1.05rem 1.9rem; }

/* En-tête de page intérieure */
.page-hero { padding-block: clamp(2.5rem, 6vw, 4.5rem) 2rem; }
.page-hero .wrap { display: grid; gap: 1rem; }
.page-hero h1 { font-size: clamp(2.4rem, 6vw, 4rem); font-weight: 800; }
.page-hero p { color: var(--muted); font-size: var(--step-1); max-width: 44ch; }

/* Programme */
.timeline { list-style: none; margin: 0; padding: 0; display: grid; gap: 0; }
.slot { display: grid; grid-template-columns: 7rem minmax(0, 1fr); gap: 1.5rem; position: relative; padding-bottom: 2.25rem; }
.slot::before { content: ""; position: absolute; left: calc(7rem + 0.75rem - 1px); top: 0.6rem; bottom: 0; width: 2px; background: var(--navy-line); }
.slot:last-child::before { display: none; }
.slot-time { font-family: var(--font-mono); font-variant-numeric: tabular-nums; text-align: right; padding-top: 0.1rem; }
.slot-time b { display: block; font-size: var(--step-1); color: var(--ink); }
.slot-time span { font-size: var(--step--1); color: var(--muted); }
.slot-body { position: relative; padding-left: 1.5rem; display: grid; gap: 0.6rem; }
.slot-body::before { content: ""; position: absolute; left: calc(-0.75rem - 7px); top: 0.45rem; width: 12px; height: 12px; border-radius: 50%; background: var(--night); border: 3px solid var(--teal); }
.slot.is-key .slot-body::before { background: var(--orange); border-color: var(--orange); }
.slot-body p { color: var(--muted); max-width: 60ch; }
.chip { justify-self: start; font-family: var(--font-mono); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.1em; padding: 0.2rem 0.6rem; border-radius: 999px; border: 1px solid var(--navy-line); color: var(--teal); }
.slot.is-key .chip { border-color: var(--orange); color: var(--orange); }
.speakers-inline { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.speakers-inline a { font-size: var(--step--1); font-weight: 600; text-decoration: none; background: var(--navy); border: 1px solid var(--navy-line); padding: 0.25rem 0.7rem; border-radius: 999px; color: var(--ink); }
.speakers-inline a:hover { border-color: var(--teal); }

.legend { display: flex; gap: 1.5rem; flex-wrap: wrap; color: var(--muted); font-size: var(--step--1); margin-bottom: 2rem; }
.legend span::before { content: ""; display: inline-block; width: 10px; height: 10px; border-radius: 50%; margin-right: 0.5rem; border: 2px solid var(--teal); vertical-align: -1px; }
.legend .k::before { background: var(--orange); border-color: var(--orange); }

/* Intervenants */
.speakers { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 20rem), 1fr)); gap: 1.25rem; }
.speaker { background: var(--navy); border: 1px solid var(--navy-line); border-radius: var(--radius); padding: 1.75rem; display: grid; grid-template-rows: auto auto 1fr auto; gap: 1rem; min-width: 0; scroll-margin-top: 6rem; }
.speaker:target { border-color: var(--teal); box-shadow: 0 0 0 3px color-mix(in srgb, var(--teal) 30%, transparent); }
.speaker-top { display: flex; gap: 1rem; align-items: center; }
.avatar { flex: none; width: 4.5rem; height: 4.5rem; border-radius: 50%; display: grid; place-items: center; font-family: var(--font-display); font-weight: 800; font-size: 1.5rem; color: var(--night); background: linear-gradient(135deg, var(--teal), var(--teal-deep)); }
.avatar.host { background: linear-gradient(135deg, var(--orange), #e07b00); }
.speaker h3 { font-size: var(--step-1); }
.speaker .role { color: var(--muted); font-size: 0.95rem; line-height: 1.4; }
.speaker .bio { color: var(--muted); }
.speaker .talk { border-top: 1px solid var(--navy-line); padding-top: 1rem; display: flex; gap: 0.75rem; align-items: baseline; flex-wrap: wrap; }
.speaker .talk time { font-family: var(--font-mono); color: var(--teal); font-variant-numeric: tabular-nums; }
.speaker .talk a { color: var(--ink); font-weight: 600; text-decoration: none; }
.speaker .talk a:hover { color: var(--teal); }

/* Pied de page */
.site-footer { border-top: 1px solid var(--navy-line); padding-block: 2rem; color: var(--muted); font-size: var(--step--1); }
.site-footer .wrap { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }

/* Petite animation d'arrivée du ticket, depuis un état visible */
@keyframes settle { from { transform: rotate(-2deg) translateY(12px); } to { transform: rotate(1.5deg) translateY(0); } }
.ticket { animation: settle 0.9s cubic-bezier(.2,.8,.2,1) both; }

@media (max-width: 52rem) {
  .hero .wrap, .invitation-letter, .video-block, .signup { grid-template-columns: minmax(0, 1fr); }
  .ticket { transform: none; animation: none; }
  .video-frame.hero-video { width: min(100%, 17rem); }
  .teaser li { border-right: 0; border-bottom: 1px solid var(--navy-line); }
  .teaser li:last-child { border-bottom: 0; }
}
@media (max-width: 34rem) {
  .slot { grid-template-columns: 4rem minmax(0, 1fr); }
  .slot::before { left: calc(4rem + 0.75rem - 1px); }
  .slot-body { padding-left: 0.75rem; }
  .slot-time b { font-size: var(--step-0); }
}

/* Page simple (evenement.html) : une colonne, lecture de haut en bas */
.simple { padding-block: clamp(2rem, 6vw, 4rem); }
.simple .wrap { max-width: 44rem; display: grid; gap: 2.5rem; }
.simple .brand { justify-self: start; }
.simple-head { display: grid; gap: 1rem; }
.simple-head h1 { font-size: clamp(2.4rem, 7vw, 3.8rem); font-weight: 800; }
.simple-head p:last-child { color: var(--muted); font-size: var(--step-1); }
.simple-list { margin: 0; border-top: 1px solid var(--navy-line); }
.simple-list > div { display: grid; grid-template-columns: 8rem minmax(0, 1fr); gap: 1rem; padding-block: 1.1rem; border-bottom: 1px solid var(--navy-line); }
.simple-list dt { font-family: var(--font-mono); font-size: var(--step--1); text-transform: uppercase; letter-spacing: 0.12em; color: var(--teal); padding-top: 0.2rem; }
.simple-list dd { margin: 0; font-weight: 600; font-size: 1.1rem; min-width: 0; }
.simple-list dd span { display: block; font-weight: 400; font-size: var(--step-0); color: var(--muted); margin-top: 0.2rem; }
.simple-agenda { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.4rem; font-weight: 500; font-size: var(--step-0); }
.simple-agenda li { display: grid; grid-template-columns: 3.75rem minmax(0, 1fr); }
.simple-agenda time { font-family: var(--font-mono); color: var(--teal); font-variant-numeric: tabular-nums; }
.simple-actions { display: flex; gap: 0.75rem; flex-wrap: wrap; }
.simple-end { background: var(--navy); border: 1px solid var(--navy-line); border-radius: var(--radius); padding: clamp(1.5rem, 5vw, 2.25rem); display: grid; gap: 0.75rem; justify-items: start; }
.simple-end h2 { font-size: var(--step-2); }
.simple-end p { color: var(--muted); }
@media (max-width: 34rem) { .simple-list > div { grid-template-columns: minmax(0, 1fr); gap: 0.3rem; } }