/* =============================================================================
   I4PL Conference 2026 - Stylesheet
   -----------------------------------------------------------------------------
   Mobile-first. Every rule is written for the 360px viewport, then widened at
   min-width breakpoints. Nothing is designed at desktop and shrunk down.

   TYPOGRAPHY FLOOR (enforced, verified against computed values):
     body copy, buttons, inputs, nav ....... 16px minimum (17px actual)
     utility text, captions, labels ........ 16px
     headings on mobile .................... 22px minimum

   BRAND (from the official 2026 conference artwork):
     cyan   #03bab2   Generations and Momentum
     blue   #0077c1   Designing the Capability Engine
     navy   #273a94   Mastering the Learning Craft
     maroon #8a234f   Human + AI
   ============================================================================= */

/* --- 1. Tokens ----------------------------------------------------------- */
:root {
  --cyan: #03bab2;
  --cyan-bright: #21e3d9;
  --cyan-deep: #016b66;      /* text on light grounds, 5.6:1 on --paper */
  --blue: #0077c1;
  --navy: #273a94;
  --maroon: #8a234f;

  --ink: #0b1b33;
  --ink-2: #102844;
  --ink-3: #16375c;
  --paper: #f3f7fa;
  --paper-2: #e9f0f6;
  --white: #ffffff;

  --body: #24384f;           /* 9.1:1 on --paper */
  --muted: #4a5f78;          /* 5.6:1 on --paper */
  --muted-dark: rgba(255, 255, 255, .84);

  --line: rgba(11, 27, 51, .13);
  --line-dark: rgba(255, 255, 255, .17);
  --focus: #ffc32f;

  --max: 1280px;
  --gutter: 1.25rem;
  --r: 1.25rem;
  --r-sm: .75rem;

  --sh-1: 0 2px 10px rgba(6, 18, 36, .06);
  --sh-2: 0 16px 44px rgba(6, 18, 36, .13);
  --sh-3: 0 32px 80px rgba(6, 18, 36, .26);

  --font: Montserrat, "Segoe UI", system-ui, -apple-system, Arial, sans-serif;

  --t-micro: 1rem;                                   /* 16px absolute floor */
  --t-small: 1rem;                                   /* 16px */
  --t-body: 1.0625rem;                               /* 17px */
  --t-lead: clamp(1.125rem, 1.02rem + 0.5vw, 1.375rem);
  --t-h3: clamp(1.375rem, 1.2rem + 0.85vw, 1.75rem);
  --t-h2: clamp(1.875rem, 1.35rem + 2.3vw, 3.25rem);
  --t-display: clamp(2.5rem, 1.45rem + 5.6vw, 6rem);

  --ease: cubic-bezier(.22, .61, .36, 1);
}

/* --- 2. Reset and base --------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 6rem;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--paper);
  color: var(--body);
  font-family: var(--font);
  font-size: var(--t-body);
  font-weight: 500;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: subpixel-antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4 { color: var(--ink); font-weight: 900; line-height: 1.12; margin: 0; }
p { margin: 0 0 1rem; }
p:last-child { margin-bottom: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
img, picture, video, iframe { display: block; max-width: 100%; }
img { height: auto; }
a { color: inherit; text-decoration-thickness: .08em; text-underline-offset: .18em; }
button { font: inherit; color: inherit; cursor: pointer; }
code { font-family: ui-monospace, "Cascadia Mono", Menlo, Consolas, monospace; }

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

.visually-hidden {
  position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.skip-link {
  position: fixed; z-index: 300; left: 1rem; top: -6rem;
  padding: .9rem 1.25rem; border-radius: var(--r-sm);
  background: var(--focus); color: var(--ink);
  font-size: var(--t-small); font-weight: 800; text-decoration: none;
  transition: top .18s var(--ease);
}
.skip-link:focus { top: 1rem; }

.wrap { width: min(var(--max), 100% - (var(--gutter) * 2)); margin-inline: auto; }

/* --- 3. Motion: scroll reveal -------------------------------------------- */
/* Progressive and opt-in: .reveal is only hidden once nav.js sets
   data-motion="on" on <html>. With JavaScript off, nothing is ever invisible. */
[data-motion="on"] .reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .7s var(--ease) var(--d, 0ms),
              transform .7s var(--ease) var(--d, 0ms);
  will-change: opacity, transform;
}
[data-motion="on"] .reveal.is-in { opacity: 1; transform: none; }

/* --- 4. Shared type ------------------------------------------------------ */
.eyebrow {
  margin: 0 0 .85rem;
  font-size: var(--t-small);
  font-weight: 800;
  letter-spacing: .13em;
  text-transform: uppercase;
  line-height: 1.35;
  color: var(--cyan-deep);
}
.eyebrow-maroon { color: var(--maroon); }
/* On dark grounds the deep cyan is too close to the background. */
.hero .eyebrow, .page-hero .eyebrow, .venue-card .eyebrow, .streams .eyebrow,
.cta-band .eyebrow, .contact-band .eyebrow, .register-action-card .eyebrow,
.speakers-band .eyebrow, .codes-band .eyebrow { color: var(--cyan); }

.section-title { font-size: var(--t-h2); letter-spacing: -.035em; max-width: 17ch; text-wrap: balance; }
.section-lead  { font-size: var(--t-lead); color: var(--muted); max-width: 46ch; }
.streams .section-lead, .speakers-band .section-lead,
.codes-band .section-lead, .codes-band .codes-note { color: var(--muted-dark); }

em { font-style: normal; color: var(--cyan); }
.page-title em, .hero-title em { display: block; }

.link-arrow {
  display: inline-flex; align-items: center; gap: .45rem;
  min-height: 2.75rem;
  font-size: var(--t-small); font-weight: 800;
  color: var(--cyan-deep); text-decoration: none;
}
.link-arrow:hover { text-decoration: underline; }
.link-arrow .btn-arrow { transition: transform .2s var(--ease); }
.link-arrow:hover .btn-arrow { transform: translateX(4px); }

/* --- 5. Buttons ---------------------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .55rem;
  min-height: 3.25rem;
  padding: .85rem 1.6rem;
  border: 2px solid transparent;
  border-radius: 999px;
  font-size: var(--t-small);
  font-weight: 800;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  transition: transform .2s var(--ease), background-color .2s var(--ease),
              color .2s var(--ease), border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.btn-arrow { font-size: 1.05em; line-height: 1; transition: transform .2s var(--ease); }
.btn:hover .btn-arrow { transform: translateX(3px); }
.btn-primary { background: var(--cyan); border-color: var(--cyan); color: #04231f; }
.btn-primary:hover { background: var(--cyan-bright); border-color: var(--cyan-bright); box-shadow: 0 8px 26px rgba(3,186,178,.4); }
.btn-light { border-color: rgba(255,255,255,.6); color: var(--white); }
.btn-light:hover { background: var(--white); color: var(--ink); }
.btn-dark { border-color: var(--ink); color: var(--ink); }
.btn-dark:hover { background: var(--ink); color: var(--white); }
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
.button-row { display: flex; flex-wrap: wrap; gap: .75rem; }

/* --- 6. Header ----------------------------------------------------------- */
.site-header {
  position: sticky; top: 0; z-index: 200;
  color: var(--white);
  background: rgba(11, 27, 51, .93);
  backdrop-filter: saturate(170%) blur(16px);
  -webkit-backdrop-filter: saturate(170%) blur(16px);
  border-bottom: 1px solid var(--line-dark);
}
.nav { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 4.5rem; }

.brand { display: inline-flex; align-items: center; flex-shrink: 0; min-height: 2.75rem; }
/* On a dark bar the lockup's dark blue disappears, so it is knocked out white. */
.brand-lockup, .brand-mark { filter: brightness(0) invert(1); }
.brand-lockup { display: none; width: auto; height: 2.5rem; }
.brand-mark { width: auto; height: 2.35rem; }

.nav-toggle {
  display: inline-flex; align-items: center; gap: .6rem;
  min-height: 2.75rem; padding: .5rem .95rem;
  background: transparent; border: 1px solid var(--line-dark);
  border-radius: 999px; color: var(--white);
  font-size: var(--t-small); font-weight: 800;
}
.nav-toggle-bars { display: grid; gap: 4px; width: 18px; }
.nav-toggle-bars i { display: block; height: 2px; background: currentColor; border-radius: 2px; transition: transform .22s var(--ease), opacity .22s var(--ease); }
.site-header.is-open .nav-toggle-bars i:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.site-header.is-open .nav-toggle-bars i:nth-child(2) { opacity: 0; }
.site-header.is-open .nav-toggle-bars i:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

.primary-nav {
  position: absolute; left: 0; right: 0; top: 100%;
  display: none;
  padding: 1rem var(--gutter) 1.5rem;
  background: var(--ink);
  border-bottom: 1px solid var(--line-dark);
  box-shadow: var(--sh-3);
}
.site-header.is-open .primary-nav { display: block; }

.nav-list { display: grid; gap: .15rem; margin-bottom: 1rem; }
.nav-link {
  display: block; padding: .85rem .6rem;
  border-radius: var(--r-sm);
  color: var(--white); font-size: var(--t-body); font-weight: 700; text-decoration: none;
}
.nav-link:hover { background: rgba(255,255,255,.1); }
.nav-link.is-current { color: var(--cyan); }

.nav-tail { display: flex; align-items: center; gap: .7rem; flex-wrap: wrap; }
.nav-out {
  display: inline-flex; align-items: center; gap: .3rem;
  min-height: 2.75rem; padding: 0 .75rem;
  border: 1px solid var(--line-dark); border-radius: 999px;
  color: var(--muted-dark); font-size: var(--t-small); font-weight: 700; text-decoration: none;
}
.nav-out:hover { color: var(--white); border-color: rgba(255,255,255,.42); }

.lang-switch { display: inline-flex; align-items: center; border: 1px solid var(--line-dark); border-radius: 999px; overflow: hidden; }
.lang-current, .lang-alt {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 3rem; min-height: 2.75rem; padding: 0 .5rem;
  font-size: var(--t-small); font-weight: 800; letter-spacing: .04em; text-decoration: none;
}
.lang-current { background: var(--cyan); color: #04231f; }
.lang-alt { color: var(--white); }
.lang-alt:hover { background: rgba(255,255,255,.15); }
.btn-nav { min-height: 2.9rem; padding: .6rem 1.35rem; }

/* --- 7. Breadcrumbs ------------------------------------------------------ */
.breadcrumbs { background: var(--ink-2); padding: .25rem 0; }
.breadcrumbs ol { display: flex; flex-wrap: wrap; align-items: center; gap: .5rem; }
.breadcrumbs li {
  display: inline-flex; align-items: center; min-height: 2.25rem;
  font-size: var(--t-small); font-weight: 700; color: var(--muted-dark);
}
.breadcrumbs li + li::before { content: "/"; margin-right: .5rem; opacity: .55; }
.breadcrumbs a { display: inline-flex; align-items: center; min-height: 2.75rem; color: var(--white); text-decoration: none; }
.breadcrumbs a:hover { text-decoration: underline; }

/* --- 8. Hero ------------------------------------------------------------- */
.hero {
  position: relative; display: flex; align-items: flex-end;
  min-height: min(90svh, 48rem);
  padding: 7rem 0 3rem;
  background: var(--ink);
  overflow: hidden;
}
.hero-media { position: absolute; inset: 0; }
.hero-media picture, .hero-media img, .hero-video {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover;
}
.hero-video { z-index: 1; }
.hero-scrim {
  position: absolute; inset: 0; z-index: 2;
  background:
    linear-gradient(180deg, rgba(11,27,51,.52) 0%, rgba(11,27,51,.26) 20%,
                            rgba(11,27,51,.70) 52%, rgba(11,27,51,.93) 80%,
                            rgba(11,27,51,.97) 100%);
}
.hero-content { position: relative; z-index: 3; color: var(--white); }
.hero-title {
  font-size: var(--t-display);
  letter-spacing: -.045em;
  /* 900-weight display with descenders needs more than the .94 it had: the
     "g" in Igniting was touching the cap-line of the line beneath. */
  line-height: 1.02;
  color: var(--white);
  text-wrap: balance;
}
/* The emphasised second line is a block, so it also gets optical separation
   independent of line-height. */
.hero-title em, .page-title em { margin-top: .07em; }
/* The hero eyebrow wraps to three lines on a phone and was sitting tight
   against the headline. Page heroes get the same treatment. */
.hero .eyebrow, .page-hero .eyebrow { margin-bottom: 1.3rem; line-height: 1.5; }
.hero-sub { max-width: 44ch; margin: 1.75rem 0 0; font-size: var(--t-lead); color: var(--muted-dark); }
.hero .button-row { margin-top: 2rem; }

/* --- 9. Status notes ----------------------------------------------------- */
.status-note {
  margin: 1.25rem 0 0; padding: .9rem 1.1rem; max-width: 58ch;
  border-left: 4px solid var(--maroon);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  background: rgba(138, 35, 79, .08);
  font-size: var(--t-small); color: var(--body);
}
.status-note-dark { background: rgba(255,255,255,.13); border-left-color: var(--cyan); color: var(--white); }

/* --- 10. Intro and facts ------------------------------------------------- */
.intro { padding: 3.5rem 0; background: var(--white); }
.intro-grid { display: grid; gap: 2.5rem; }
.intro-copy { font-size: clamp(1.75rem, 1.2rem + 2.6vw, 3rem); line-height: 1.14; letter-spacing: -.035em; margin-bottom: 1.25rem; text-wrap: balance; }
.intro-body { max-width: 46ch; font-size: var(--t-lead); color: var(--muted); }
.intro .link-arrow { margin-top: .5rem; }

.fact-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.25rem; }
.fact { padding: 1.25rem 1rem; background: var(--paper-2); border-radius: var(--r); }
.fact b { display: block; font-size: clamp(1.75rem, 1.4rem + 1.6vw, 2.5rem); font-weight: 900; line-height: 1; letter-spacing: -.03em; color: var(--navy); }
/* Optical correction for the en dash in a number range. Montserrat's dash is a
   thin mid-height bar; between two 900-weight figures it reads anaemic and gets
   visually crushed. The character stays a true en dash (correct for ranges, and
   correct when copied or read aloud) and is only scaled and spaced. */
.fact b .rng { font-size: 1.16em; padding: 0 .04em; vertical-align: .02em; }
.fact span { display: block; margin-top: .5rem; font-size: var(--t-small); font-weight: 700; color: var(--muted); }

/* --- 11. Section heads --------------------------------------------------- */
.section-head { display: grid; gap: 1.25rem; margin-bottom: 2rem; }

/* --- 12. Stream cards ---------------------------------------------------- */
.streams { padding: 3.5rem 0; background: var(--ink); }
.streams .section-title { color: var(--white); }
.streams-inset { background: var(--ink-2); }

.stream-grid { display: grid; gap: 1rem; }
.stream {
  position: relative; display: flex; flex-direction: column; justify-content: flex-end;
  min-height: 13.5rem; padding: 1.75rem 1.5rem;
  border-radius: var(--r); color: var(--white); text-decoration: none;
  overflow: hidden; isolation: isolate;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}
.stream::after {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(180deg, rgba(255,255,255,.16), rgba(0,0,0,.1));
  opacity: 0; transition: opacity .3s var(--ease);
}
.stream:hover { transform: translateY(-6px); box-shadow: var(--sh-3); }
.stream:hover::after { opacity: 1; }
.stream-navy   { background: linear-gradient(155deg, #2f46b0 0%, #1b2668 100%); }
.stream-blue   { background: linear-gradient(155deg, #0f8ddb 0%, #024a78 100%); }
.stream-maroon { background: linear-gradient(155deg, #a82c61 0%, #5a1233 100%); }
.stream-cyan   { background: linear-gradient(155deg, #03bab2 0%, #029a94 100%); color: #04231f; }

.stream-n { position: absolute; right: 1.1rem; top: .4rem; font-size: 4.5rem; font-weight: 900; line-height: 1; letter-spacing: -.06em; opacity: .22; }
.stream-title { position: relative; max-width: 14ch; font-size: var(--t-h3); letter-spacing: -.03em; color: inherit; }
.stream-line { position: relative; margin: .75rem 0 0; max-width: 26ch; font-size: var(--t-small); font-weight: 600; opacity: .95; }
.stream-go { position: relative; margin-top: 1rem; font-size: 1.35rem; transition: transform .3s var(--ease); }
.stream:hover .stream-go { transform: translateX(6px); }

/* --- 13. Speakers -------------------------------------------------------- */
.speakers-band { padding: 3.5rem 0; background: var(--ink-2); }
.speakers-band .section-title { color: var(--white); }
.speakers-band .btn-dark { border-color: rgba(255,255,255,.6); color: var(--white); }
.speakers-band .btn-dark:hover { background: var(--white); color: var(--ink); }

.speaker-strip { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; margin-bottom: 2rem; }
.speaker-chip { text-decoration: none; color: var(--white); }
.speaker-chip picture, .speaker-card picture { display: block; }
.speaker-img {
  width: 100%; aspect-ratio: 1; object-fit: cover;
  border-radius: var(--r); background: var(--ink-3);
  transition: transform .35s var(--ease);
}
.speaker-chip:hover .speaker-img { transform: scale(1.03); }
.speaker-chip-name { display: block; margin-top: .7rem; font-size: var(--t-small); font-weight: 800; line-height: 1.3; }

.speaker-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.25rem 1rem; margin-top: 2rem; }
.speaker-card { scroll-margin-top: 7rem; }
.speaker-name { margin-top: .8rem; font-size: var(--t-small); font-weight: 800; line-height: 1.3; color: var(--ink); }

/* --- 14. Gallery --------------------------------------------------------- */
.gallery { padding: 3.5rem 0; background: var(--paper-2); }
.shot-grid { display: grid; gap: 1rem; }
.shot { margin: 0; border-radius: var(--r); overflow: hidden; box-shadow: var(--sh-1); }
.shot-img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; transition: transform .5s var(--ease); }
.shot:hover .shot-img { transform: scale(1.04); }

/* --- 15. Venue band ------------------------------------------------------ */
.venue-band { position: relative; padding: 4rem 0; background: var(--ink); overflow: hidden; }
.venue-media { position: absolute; inset: 0; }
.venue-media picture, .venue-img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.venue-scrim { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(11,27,51,.42) 0%, rgba(11,27,51,.86) 100%); }
.venue-band .wrap { position: relative; z-index: 2; }
.venue-card {
  max-width: 36rem; padding: 2rem 1.5rem;
  border-radius: var(--r); background: rgba(11,27,51,.76);
  border: 1px solid var(--line-dark); color: var(--muted-dark);
  backdrop-filter: blur(10px);
}
.venue-title { font-size: var(--t-h2); letter-spacing: -.035em; color: var(--white); }
.venue-address { margin: .75rem 0 1rem; font-size: var(--t-small); font-weight: 700; color: var(--cyan); }
.venue-card .btn { margin-top: 1.25rem; }

/* --- 16. Closing CTA ----------------------------------------------------- */
.cta-band { position: relative; padding: 4rem 0; overflow: hidden; background: var(--ink); color: var(--white); }
.cta-media { position: absolute; inset: 0; }
.cta-media picture, .cta-img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.cta-scrim { position: absolute; inset: 0; background: linear-gradient(120deg, rgba(11,27,51,.94) 0%, rgba(11,27,51,.74) 55%, rgba(2,120,116,.62) 100%); }
.cta-band .wrap { position: relative; z-index: 2; }
.cta-grid { display: grid; gap: 2rem; }
.cta-title { font-size: var(--t-h2); letter-spacing: -.04em; max-width: 14ch; color: var(--white); }
.cta-body { font-size: var(--t-lead); max-width: 44ch; color: var(--muted-dark); }

/* --- 17. Inner page hero ------------------------------------------------- */
.page-hero {
  position: relative; padding: 3.5rem 0 3rem;
  background: radial-gradient(120% 100% at 10% 0%, #1a3c66 0%, transparent 58%), var(--ink);
  color: var(--muted-dark); overflow: hidden;
}
.page-hero-media { position: absolute; inset: 0; }
.page-hero-media picture, .page-hero-img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
/* Kept light enough that the conference photograph actually reads. The copy
   block sits left, so the horizontal pass carries most of the contrast. */
.page-hero-scrim {
  position: absolute; inset: 0;
  background:
    linear-gradient(180deg, rgba(11,27,51,.55) 0%, rgba(11,27,51,.62) 55%, rgba(11,27,51,.86) 100%),
    linear-gradient(90deg, rgba(11,27,51,.80) 0%, rgba(11,27,51,.30) 62%, rgba(11,27,51,.12) 100%);
}
.page-hero-inner { position: relative; z-index: 2; }
.page-title {
  font-size: clamp(2.125rem, 1.4rem + 3.6vw, 4rem);
  letter-spacing: -.04em;
  line-height: 1.04;
  color: var(--white); max-width: 20ch; text-wrap: balance;
}
.page-lead { margin: 1.25rem 0 0; max-width: 58ch; font-size: var(--t-lead); color: var(--muted-dark); }

.page-main { padding: 3rem 0; }

/* --- 18. Info cards ------------------------------------------------------ */
.info-grid { display: grid; gap: 1rem; }
.info-card {
  padding: 1.75rem 1.5rem; background: var(--white);
  border: 1px solid var(--line); border-radius: var(--r);
  box-shadow: var(--sh-1);
  transition: transform .28s var(--ease), box-shadow .28s var(--ease);
}
.info-card:hover { transform: translateY(-4px); box-shadow: var(--sh-2); }
.info-title { margin-bottom: .75rem; font-size: var(--t-h3); letter-spacing: -.02em; }

/* --- 19. Run of show ----------------------------------------------------- */
.run-of-show { padding: 3rem 0; background: var(--paper-2); }
.run-grid { display: grid; gap: 1.25rem; }
.run-day { padding: 1.5rem 1.25rem; background: var(--white); border: 1px solid var(--line); border-radius: var(--r); }
.run-day-title { margin-bottom: 1rem; font-size: var(--t-h3); letter-spacing: -.02em; color: var(--navy); }
.run-list { display: grid; gap: .5rem; }
.run-row {
  display: grid; grid-template-columns: 1fr; gap: .2rem;
  padding: .85rem 1rem; border-radius: var(--r-sm); background: var(--paper);
  border-left: 4px solid var(--cyan);
}
.run-type { font-size: var(--t-small); font-weight: 800; letter-spacing: .06em; text-transform: uppercase; color: var(--cyan-deep); }
.run-title { font-size: var(--t-body); font-weight: 700; color: var(--ink); }

/* --- 20. Stream detail --------------------------------------------------- */
.stream-detail-stack { display: grid; gap: 1.25rem; }
.stream-detail {
  padding: 1.75rem 1.5rem; border-radius: var(--r);
  border: 1px solid var(--line); border-top: 6px solid var(--cyan);
  background: var(--white); box-shadow: var(--sh-1); scroll-margin-top: 7rem;
}
.stream-detail-navy   { border-top-color: var(--navy); }
.stream-detail-blue   { border-top-color: var(--blue); }
.stream-detail-maroon { border-top-color: var(--maroon); }
.stream-detail-cyan   { border-top-color: var(--cyan); }
.stream-detail-head { display: grid; gap: 1rem; margin-bottom: 1.25rem; }
.stream-graphic { width: min(20rem, 100%); height: auto; }
.stream-detail-n { display: block; font-size: 1.25rem; font-weight: 900; letter-spacing: .1em; color: var(--muted); }
.stream-detail-title { margin-top: .35rem; font-size: var(--t-h3); letter-spacing: -.03em; }
.stream-detail-line { margin: .5rem 0 0; font-size: var(--t-body); font-weight: 700; color: var(--maroon); }
.stream-detail-body { display: grid; gap: 1.5rem; }

.audience { padding: 1.25rem; background: var(--paper-2); border-radius: var(--r-sm); }
.audience-title { margin-bottom: .75rem; font-size: var(--t-small); font-weight: 800; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
.audience-list { display: grid; gap: .5rem; }
.audience-list li { position: relative; padding-left: 1.35rem; font-size: var(--t-small); font-weight: 600; }
.audience-list li::before { content: ""; position: absolute; left: 0; top: .55em; width: .5rem; height: .5rem; border-radius: 50%; background: var(--cyan); }

/* --- 21. Hotel and map --------------------------------------------------- */
.hotel-band { padding: 3rem 0 0; }
.hotel-grid { display: grid; gap: 1.5rem; }
.hotel-card { padding: 1.75rem 1.5rem; background: var(--white); border: 1px solid var(--line); border-radius: var(--r); box-shadow: var(--sh-2); }
.hotel-title { font-size: var(--t-h2); letter-spacing: -.035em; }
.hotel-address { margin: .85rem 0 1.5rem; font-style: normal; font-size: var(--t-body); font-weight: 600; line-height: 1.65; }
.hotel-facts { display: grid; gap: .75rem; margin: 0 0 1.5rem; }
.hotel-facts > div { display: flex; flex-wrap: wrap; gap: .35rem 1rem; justify-content: space-between; align-items: center; padding: .8rem 1rem; background: var(--paper-2); border-radius: var(--r-sm); }
.hotel-facts dt { font-size: var(--t-small); font-weight: 700; color: var(--muted); }
.hotel-facts dd { margin: 0; font-size: var(--t-body); font-weight: 800; color: var(--ink); }
.hotel-facts dd.is-urgent { color: var(--maroon); }
.code-value { display: inline-block; padding: .15rem .55rem; border-radius: .4rem; background: var(--ink); color: var(--cyan); font-size: var(--t-small); font-weight: 700; letter-spacing: .06em; }

.map-wrap { border-radius: var(--r); overflow: hidden; box-shadow: var(--sh-2); background: var(--paper-2); }
.map-frame { width: 100%; height: 22rem; border: 0; }

/* --- 22. Travel codes ---------------------------------------------------- */
.codes-band { padding: 3rem 0; background: var(--ink); color: var(--muted-dark); }
.codes-band .section-title { color: var(--white); }
.codes-grid { display: grid; gap: 2rem; }
.code-list { display: grid; gap: .6rem; }
.code-row { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: .95rem 1.1rem; background: rgba(255,255,255,.07); border: 1px solid var(--line-dark); border-radius: var(--r-sm); }
.code-carrier { font-size: var(--t-body); font-weight: 700; color: var(--white); }

/* --- 23. Register -------------------------------------------------------- */
.register-main { padding: 3rem 0 0; }
.register-grid { display: grid; gap: 1.5rem; }
.register-included { padding: 1.75rem 1.5rem; background: var(--white); border: 1px solid var(--line); border-radius: var(--r); box-shadow: var(--sh-1); }
.included-list { display: grid; gap: .75rem; margin-top: 1rem; }
.included-list li { position: relative; padding-left: 1.9rem; font-size: var(--t-body); font-weight: 600; }
.included-list li::before { content: ""; position: absolute; left: 0; top: .4em; width: 1.05rem; height: .55rem; border-left: 3px solid var(--cyan); border-bottom: 3px solid var(--cyan); transform: rotate(-45deg); }
.register-action-card { padding: 1.75rem 1.5rem; background: var(--ink); color: var(--muted-dark); border-radius: var(--r); }
.register-status-lead { font-size: var(--t-lead); font-weight: 600; color: var(--white); margin-bottom: 1.5rem; }

/* --- 24. Contact band ---------------------------------------------------- */
.contact-band { padding: 3rem 0; background: var(--navy); color: var(--muted-dark); }
.contact-inner { max-width: 48rem; }
.contact-title { font-size: var(--t-h2); letter-spacing: -.035em; color: var(--white); margin-bottom: 1rem; }
.contact-band .button-row { margin-top: 1.5rem; }

/* --- 25. FAQ ------------------------------------------------------------- */
.faq-stack { display: grid; gap: .75rem; max-width: 54rem; }
.faq-item { background: var(--white); border: 1px solid var(--line); border-radius: var(--r-sm); overflow: hidden; }
.faq-q { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1.25rem; font-size: var(--t-body); font-weight: 800; color: var(--ink); cursor: pointer; list-style: none; }
.faq-q::-webkit-details-marker { display: none; }
.faq-mark { position: relative; flex-shrink: 0; width: 1.25rem; height: 1.25rem; }
.faq-mark::before, .faq-mark::after { content: ""; position: absolute; top: 50%; left: 0; width: 100%; height: 3px; margin-top: -1.5px; background: var(--cyan-deep); border-radius: 2px; transition: transform .22s var(--ease); }
.faq-mark::after { transform: rotate(90deg); }
.faq-item[open] .faq-mark::after { transform: rotate(0deg); }
.faq-a { padding: 0 1.25rem 1.35rem; }
.faq-a p { font-size: var(--t-body); color: var(--body); max-width: 64ch; }

/* --- 26. Policies -------------------------------------------------------- */
.policy-layout { display: grid; gap: 2rem; }
.policy-nav { padding: 1.25rem; background: var(--white); border: 1px solid var(--line); border-radius: var(--r); }
.policy-nav-title { margin-bottom: .75rem; font-size: var(--t-small); font-weight: 800; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
.policy-nav ul { display: grid; gap: .2rem; }
.policy-nav a { display: block; padding: .65rem .5rem; min-height: 2.75rem; border-radius: var(--r-sm); font-size: var(--t-small); font-weight: 700; color: var(--cyan-deep); text-decoration: none; }
.policy-nav a:hover { background: var(--paper-2); }
.policy-stack { display: grid; gap: 1.25rem; }
.policy { padding: 1.75rem 1.5rem; background: var(--white); border: 1px solid var(--line); border-radius: var(--r); scroll-margin-top: 7rem; }
.policy-title { margin-bottom: .85rem; font-size: var(--t-h3); letter-spacing: -.02em; }
.policy p { max-width: 72ch; }

/* --- 27. Footer ---------------------------------------------------------- */
.site-footer { padding: 3rem 0 2rem; background: var(--ink); color: var(--muted-dark); }
.footer-top { display: grid; gap: 2.5rem; }
.footer-mark { width: auto; height: 3rem; filter: brightness(0) invert(1); }
.footer-theme { margin: 1rem 0 .25rem; font-size: var(--t-h3); font-weight: 900; color: var(--white); letter-spacing: -.02em; }
.footer-tagline { max-width: 34ch; font-size: var(--t-small); color: var(--muted-dark); }
.footer-h { margin-bottom: 1rem; font-size: var(--t-small); font-weight: 800; letter-spacing: .12em; text-transform: uppercase; color: var(--cyan); }
.footer-links ul { display: grid; gap: .2rem; }
.footer-links a { display: inline-flex; align-items: center; min-height: 2.75rem; font-size: var(--t-small); font-weight: 700; color: var(--muted-dark); text-decoration: none; }
.footer-links a:hover { color: var(--white); text-decoration: underline; }
.footer-contact p { font-size: var(--t-small); }
.footer-label { margin: 1.25rem 0 .35rem; font-size: var(--t-small); font-weight: 800; color: var(--white); }
.footer-contact a { color: var(--cyan); }
.footer-out { display: inline-flex; align-items: center; gap: .35rem; min-height: 2.75rem; font-weight: 700; }
.footer-base { display: grid; gap: .5rem; margin-top: 2.5rem; padding-top: 1.5rem; border-top: 1px solid var(--line-dark); }
.footer-base p { margin: 0; font-size: var(--t-small); color: var(--muted-dark); }
.footer-base a { color: var(--white); }

/* =============================================================================
   BREAKPOINTS
   ============================================================================= */

@media (min-width: 40rem) {
  :root { --gutter: 2rem; }
  .fact-grid { grid-template-columns: repeat(4, 1fr); }
  .stream-grid, .info-grid, .shot-grid { grid-template-columns: repeat(2, 1fr); }
  .speaker-strip, .speaker-grid { grid-template-columns: repeat(3, 1fr); }
  .run-grid { grid-template-columns: repeat(2, 1fr); }
  .hero { padding: 8rem 0 4rem; }
  .info-card, .register-included, .register-action-card, .hotel-card,
  .stream-detail, .policy, .run-day { padding: 2rem; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .footer-base { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem; }
  .run-row { grid-template-columns: 13rem 1fr; align-items: baseline; gap: 1rem; }
}

@media (min-width: 62rem) {
  :root { --gutter: 2.5rem; }
  .nav { min-height: 5.25rem; }
  .brand-mark { height: 2.75rem; }

  .intro { padding: 5.5rem 0; }
  .intro-grid { grid-template-columns: 1.05fr .95fr; gap: 4rem; align-items: center; }
  .fact-grid { grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }

  .streams, .gallery, .speakers-band, .cta-band, .run-of-show, .codes-band { padding: 5.5rem 0; }
  .stream-grid { grid-template-columns: repeat(4, 1fr); gap: 1.25rem; }
  .stream { min-height: 18rem; padding: 2rem 1.75rem; }
  .section-head { grid-template-columns: 1.15fr .85fr; align-items: end; gap: 3rem; margin-bottom: 3rem; }

  .speaker-strip { grid-template-columns: repeat(6, 1fr); }
  .speaker-grid { grid-template-columns: repeat(5, 1fr); gap: 1.75rem 1.25rem; }
  .shot-grid { grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }

  .venue-band { padding: 7rem 0; }
  .venue-card { padding: 2.75rem 2.5rem; }
  .cta-grid { grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; }

  .page-hero { padding: 5.5rem 0 5rem; }
  .page-main { padding: 4.5rem 0; }
  .info-grid { grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }

  .stream-detail { padding: 3rem 2.75rem; }
  .stream-detail-head { grid-template-columns: 18rem 1fr; align-items: center; gap: 2rem; }
  .stream-detail-body { grid-template-columns: 1.4fr .6fr; gap: 3rem; }

  .hotel-band { padding: 4.5rem 0 0; }
  .hotel-grid { grid-template-columns: .95fr 1.05fr; gap: 2.5rem; align-items: stretch; }
  .map-frame { height: 100%; min-height: 30rem; }
  .codes-grid { grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; }

  .register-main { padding: 4.5rem 0 0; }
  .register-grid { grid-template-columns: 1.1fr .9fr; gap: 2.5rem; align-items: start; }

  .policy-layout { grid-template-columns: 17rem 1fr; gap: 3rem; align-items: start; }
  .policy-nav { position: sticky; top: 7rem; }

  .contact-band { padding: 5.5rem 0; }
  .site-footer { padding: 5rem 0 2.5rem; }
  .footer-top { grid-template-columns: 1.2fr .8fr 1fr; gap: 3rem; }
}

/* Nav gets its OWN breakpoint, wider than the layout breakpoint. French labels
   are materially longer than English ("Lieu et déplacements" against "Venue &
   travel"), and at 1024px the French bar pushed Register off-screen. Rather
   than shrink the nav below the 16px floor, the drawer stays until there is
   genuinely room for the longer of the two languages. */
@media (min-width: 82rem) {
  .nav-toggle { display: none; }
  .brand-lockup { display: block; }
  .brand-mark { display: none; }
  .primary-nav {
    position: static; display: flex !important; align-items: center; gap: 1.1rem;
    padding: 0; background: none; border: 0; box-shadow: none;
  }
  .nav-list { display: flex; align-items: center; gap: .1rem; margin-bottom: 0; }
  .nav-link { padding: .6rem .65rem; font-size: var(--t-small); white-space: nowrap; }
  .nav-tail { flex-wrap: nowrap; gap: .5rem; }
}

@media (min-width: 90rem) {
  .hero { min-height: min(92svh, 54rem); }
}

/* =============================================================================
   PREFERENCES
   ============================================================================= */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important; animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
  .btn:hover, .stream:hover, .info-card:hover { transform: none; }
  .hero-video { display: none; }
  /* Reveal must never leave content invisible when motion is suppressed. */
  [data-motion="on"] .reveal { opacity: 1 !important; transform: none !important; }
}

@media (prefers-contrast: more) {
  :root { --muted: #2f4257; --muted-dark: #ffffff; --line: rgba(11,27,51,.42); }
  .hero-scrim { background: rgba(11,27,51,.86); }
}

@media print {
  .site-header, .cta-band, .skip-link, .hero-media, .breadcrumbs,
  .page-hero-media, .map-wrap { display: none; }
  body { background: #fff; color: #000; font-size: 12pt; }
  .hero { min-height: auto; padding: 1rem 0; background: #fff; }
  .hero-title, .hero-sub, .page-title, .page-lead { color: #000; }
  [data-motion="on"] .reveal { opacity: 1 !important; transform: none !important; }
}