/* ============================================================
   Symposium of Accessory Design 2027 — EKA
   Single stylesheet: tokens → base → nav → footer → buttons
   → hero → sections → components → open-call → responsive
   ============================================================ */

/* ===== Design tokens (spec §2–§3) ===== */
:root{
  --black:#000; --ink:#0d0d0d; --white:#fff;
  --green:#00d2a0;        /* fills / borders / underlines ONLY — 1.96:1 on white, never text */
  --green-lg:#00a07a;     /* LARGE green text only (>=24px / >=19px bold) — 3.33:1 */
  --green-tx:#007a5e;     /* normal-size green text/links — 5.32:1, passes AA */
  --paper:#f4f4f4; --line:#e4e4e4;
  --maxw:1180px;
  --f-display:'EKA-Absolution','Libre Franklin',Arial,sans-serif;
  --f-body:'Libre Franklin',Arial,Helvetica,sans-serif;
}
@font-face{
  font-family:'EKA-Absolution';
  src:url('../fonts/EKAAbsolutionRegular.woff2') format('woff2');
  font-weight:400; font-style:normal; font-display:swap;
}

/* ===== Reset / base ===== */
*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{ margin:0; background:var(--white); color:var(--black);
  font-family:var(--f-body); font-size:17px; line-height:1.5; -webkit-font-smoothing:antialiased; }
img{ max-width:100%; display:block; }
a{ color:inherit; }
h1,h2,h3{ margin:0; }
.container{ max-width:var(--maxw); margin:0 auto; padding-left:24px; padding-right:24px; }
section{ padding-top:56px; padding-bottom:56px; }
.display{ font-family:var(--f-display); text-transform:uppercase; font-weight:400; letter-spacing:.005em; line-height:.92; }
.label{ font:800 12px/1 var(--f-body); letter-spacing:.16em; text-transform:uppercase; color:var(--green-tx); margin:0 0 18px; }
.note{ margin-top:24px; font-style:italic; color:#555; }
.visually-hidden{ position:absolute; width:1px; height:1px; overflow:hidden; clip:rect(0 0 0 0); white-space:nowrap; }
:focus-visible{ outline:3px solid var(--green-tx); outline-offset:2px; }
@media (prefers-reduced-motion:reduce){ html{ scroll-behavior:auto; } }

/* ===== Skip link + header / nav ===== */
.skip{ position:absolute; left:8px; top:-44px; background:var(--black); color:var(--white); padding:8px 12px; z-index:100; text-decoration:none; transition:top .12s; }
.skip:focus{ top:8px; }
.site-header{ position:sticky; top:0; z-index:50; background:var(--white); border-bottom:1px solid var(--line); }
.site-header.is-scrolled{ box-shadow:0 2px 12px rgba(0,0,0,.08); }
.nav-row{ display:flex; align-items:center; gap:24px; min-height:64px; }
.brand{ display:flex; align-items:center; gap:12px; font:800 15px/1.1 var(--f-body); letter-spacing:.04em; text-decoration:none; text-transform:uppercase; max-width:72vw; }
.brand-logo{ height:30px; width:auto; flex:none; display:block; }
.nav{ display:flex; gap:22px; margin-left:auto; align-items:center; }
.nav a{ font:700 13px/1 var(--f-body); letter-spacing:.06em; text-transform:uppercase; text-decoration:none; padding:6px 0; border-bottom:2px solid transparent; }
.nav a:hover{ border-bottom-color:var(--green); }
.nav .nav-cta{ background:var(--black); color:var(--white); padding:11px 18px; border-bottom:none; }
.nav .nav-cta:hover{ background:var(--green); color:var(--black); }
.nav-toggle{ display:none; margin-left:auto; font-size:24px; background:none; border:0; cursor:pointer; line-height:1; }

/* ===== Footer ===== */
.site-footer{ background:var(--ink); color:var(--white); margin-top:80px; padding:56px 0; }
.foot-title{ font-size:30px; }
.foot-meta{ color:var(--green); font:700 14px/1.5 var(--f-body); margin:12px 0 22px; letter-spacing:.04em; }
.foot-net{ max-width:60ch; opacity:.85; }
.foot-contact{ margin-top:14px; }
.foot-contact a{ color:var(--green); }      /* green on dark = 10.7:1 — AA ok */
.foot-org{ opacity:.6; font-size:13px; margin-top:22px; }

/* ===== Buttons ===== */
.btn{ display:inline-block; font:800 13px/1 var(--f-body); letter-spacing:.1em; text-transform:uppercase; padding:16px 28px; text-decoration:none; }
.btn-primary{ background:var(--black); color:var(--white); }
.btn-primary:hover{ background:var(--green); color:var(--black); }
.btn-outline{ background:var(--white); color:var(--black); box-shadow:inset 0 0 0 2px var(--green); }
.btn-outline:hover{ background:var(--green); }

/* ===== Hero (editorial split) ===== */
.hero{ display:grid; grid-template-columns:1.15fr .85fr; gap:48px; align-items:center; padding-top:64px; padding-bottom:72px; }
.hero-h1{ font-size:clamp(40px,6vw,84px); margin:16px 0 20px; }
.hero-sub{ font-size:19px; max-width:46ch; }
.hero .btn{ margin-top:28px; }
.hero-media img{ width:100%; height:auto; }   /* landscape representative photo — show in full, right edge flush with content */
.hero-sm{ grid-template-columns:1fr; padding-top:48px; padding-bottom:32px; }
/* photo hero (Tallinn) — CC BY-SA background with text overlay */
.hero-photo{ position:relative; isolation:isolate; background:#0d0d0d center/cover no-repeat; background-image:url('/img/tallinn-hero.jpg'); color:#fff; }
.hero-photo::before{ content:''; position:absolute; inset:0; background:linear-gradient(180deg, rgba(0,0,0,.40), rgba(0,0,0,.75)); z-index:0; }
.hero-photo > .container{ position:relative; z-index:1; padding-top:96px; padding-bottom:88px; }
.hero-photo .label{ color:var(--green); }
.hero-photo .hero-h1{ color:#fff; margin:16px 0 18px; }
.hero-photo .hero-sub{ color:#fff; opacity:.95; text-shadow:0 1px 2px rgba(0,0,0,.4); }
/* photo credit revealed by an info icon (hover / press → 4s) */
.credit-info{ position:absolute; right:14px; bottom:12px; z-index:2; }
.credit-btn{ width:22px; height:22px; border-radius:50%; border:1px solid rgba(255,255,255,.75); background:rgba(0,0,0,.4); color:#fff; font:italic 700 12px/1 Georgia,serif; cursor:pointer; display:grid; place-items:center; padding:0; }
.credit-btn:hover, .credit-btn:focus-visible{ background:rgba(0,0,0,.7); }
.credit-tip{ position:absolute; right:32px; top:50%; white-space:nowrap; background:rgba(0,0,0,.82); color:#fff; padding:7px 11px; font:600 11px/1.4 var(--f-body); opacity:0; visibility:hidden; transform:translate(6px,-50%); transition:opacity .15s, transform .15s; pointer-events:none; }
.credit-tip a{ color:#fff; }
.credit-info.show .credit-tip,
.credit-btn:focus-visible + .credit-tip{ opacity:1; visibility:visible; transform:translate(0,-50%); pointer-events:auto; }
@media (max-width:520px){ .credit-tip{ white-space:normal; width:200px; } }

/* ===== Intro ===== */
.intro .lead{ font-size:clamp(26px,3.4vw,40px); line-height:1.05; margin-bottom:20px; max-width:20ch; }
.intro p{ font-size:19px; max-width:62ch; }

/* ===== Grids / themes / expect ===== */
.grid-3{ display:grid; grid-template-columns:repeat(3,1fr); gap:32px; margin-top:20px; }
.grid-3 h3{ font:800 22px/1.1 var(--f-body); border-top:3px solid var(--green); padding-top:14px; }
.grid-3 p{ margin-top:10px; }

/* ===== Programme day cards ===== */
.grid-4{ display:grid; grid-template-columns:repeat(4,1fr); gap:24px; margin-top:20px; }
.days article{ border-top:3px solid var(--black); padding-top:14px; }
.days .day{ font:800 12px/1 var(--f-body); letter-spacing:.12em; text-transform:uppercase; color:var(--green-tx); }
.days h3{ font:800 19px/1.15 var(--f-body); margin:8px 0; }

/* ===== Day-by-day list (Tallinn cultural programme) ===== */
.daylist{ margin-top:20px; }
.dayrow{ display:grid; grid-template-columns:220px 1fr; gap:28px; border-top:3px solid var(--black); padding-top:16px; margin-bottom:22px; }
.dayrow .dayhead .day{ font:800 12px/1 var(--f-body); letter-spacing:.12em; text-transform:uppercase; color:var(--green-tx); }
.dayrow .dayhead h3{ font:800 20px/1.15 var(--f-body); margin-top:8px; }
.dayrow ul{ margin:0; padding-left:18px; }
.dayrow li{ margin-bottom:8px; }

/* ===== Who / audience ===== */
.who{ list-style:none; padding:0; margin:20px 0 0; display:grid; grid-template-columns:repeat(2,1fr); gap:10px 32px; max-width:900px; }
.who li{ border-left:3px solid var(--green); padding:6px 0 6px 14px; font-weight:600; }

/* ===== Timeline / key dates ===== */
.timeline{ list-style:none; padding:0; margin:20px 0 0; display:grid; grid-template-columns:repeat(5,1fr); gap:0; }
.timeline li{ border-top:3px solid var(--line); padding:16px 14px 0 0; }
.timeline li.is-event{ border-top-color:var(--green); }
.timeline .when{ display:block; font:800 14px/1.2 var(--f-body); }
.timeline .what{ display:block; color:#555; margin-top:4px; font-size:14px; }

/* ===== Open Call CTA box (content-width green box, black text) ===== */
.callband{ background:var(--green); color:var(--black); padding:44px; }
.callband .label{ color:var(--black); }          /* black on green = 10.7:1 */
.callband-in{ display:flex; align-items:center; justify-content:space-between; gap:32px; flex-wrap:wrap; }
.callband-h{ color:var(--black); font-size:clamp(30px,4vw,52px); margin:12px 0 10px; }
.callband-sub{ color:var(--black); max-width:42ch; }
.callband .btn-primary{ background:var(--black); color:var(--white); }   /* black button on green box */
.callband .btn-primary:hover{ background:var(--white); color:var(--black); }

/* ===== Open Call page ===== */
.topics{ list-style:none; padding:0; margin:20px 0 0; display:grid; gap:22px; }
.topics h3{ font:800 20px/1.2 var(--f-body); }
.topics p{ max-width:70ch; margin-top:6px; }
.req{ columns:2; column-gap:32px; list-style:none; padding:0; max-width:700px; }
.req li{ border-left:3px solid var(--green); padding:6px 0 6px 14px; margin-bottom:10px; font-weight:600; break-inside:avoid; }

/* ===== Responsive ===== */
@media (max-width:900px){
  .hero{ grid-template-columns:1fr; gap:28px; }
  .hero-media{ order:-1; }
  .grid-4{ grid-template-columns:repeat(2,1fr); }
  .timeline{ grid-template-columns:repeat(2,1fr); gap:0 24px; }
  .timeline li{ border-top:none; border-left:3px solid var(--line); padding:8px 0 8px 14px; margin-bottom:8px; }
  .timeline li.is-event{ border-left-color:var(--green); }
}
@media (max-width:680px){
  .grid-3,.grid-4{ grid-template-columns:1fr; }
  .who{ grid-template-columns:1fr; } .req{ columns:1; }
  .dayrow{ grid-template-columns:1fr; gap:10px; }
  .hero-photo > .container{ padding-top:64px; padding-bottom:56px; }
  /* No-JS: nav visible & stacked — every link reachable. */
  .nav{ display:flex; flex-direction:column; align-items:flex-start; gap:6px; margin-left:0; width:100%; padding-bottom:10px; }
  .nav-toggle{ display:none; }
  /* JS present (html.js): collapse into a toggled menu. */
  .js .nav{ display:none; position:absolute; top:64px; left:0; right:0; background:var(--white); border-bottom:1px solid var(--line); padding:12px 24px; width:auto; }
  .js .nav.is-open{ display:flex; }
  .js .nav-toggle{ display:block; }
  .callband-in{ flex-direction:column; align-items:flex-start; }
}