/* ============================================================
   VIA AHINORA — Анкетно проучване
   Premium dark/gold survey UI · front-end only
   ============================================================ */

/* ---------- Fonts ---------- */
@font-face{
  font-family:"Dream Avenue";
  src:url("../fonts/dream-avenue.woff2") format("woff2");
  font-weight:400;font-style:normal;font-display:swap;
}
@font-face{
  font-family:"Droid Serif";
  src:url("../fonts/droid-serif.woff2") format("woff2");
  font-weight:400 700;font-style:normal;font-display:swap;
}
@font-face{
  font-family:"Montserrat";
  src:url("../fonts/montserrat-vf.woff2") format("woff2");
  font-weight:200 800;font-style:normal;font-display:swap;
}

/* ---------- Tokens ---------- */
:root{
  --bg:#0c0c0d;
  --bg-2:#121213;
  --panel:#161618;
  --panel-2:#1c1c1f;
  --gold:#c5a059;
  --gold-2:#d4af37;
  --gold-hi:#fff2b0;
  --ink:#f4f1ea;
  --ink-soft:#cfcabf;
  --muted:#8c867b;
  --line:rgba(197,160,89,.22);
  --line-soft:rgba(255,255,255,.07);
  --serif:"Droid Serif",Georgia,"Times New Roman",serif;
  --sans:"Montserrat",system-ui,-apple-system,"Segoe UI",sans-serif;
  --display:"Dream Avenue",var(--serif);
  --radius:16px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --maxw:760px;
}

/* ---------- Reset ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body{
  font-family:var(--sans);
  color:var(--ink);
  background:var(--bg);
  line-height:1.6;
  min-height:100dvh;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
button{font:inherit;color:inherit;cursor:pointer;background:none;border:none}
a{color:inherit}
img{max-width:100%;display:block}

/* ---------- Atmospheric background ---------- */
.bg{position:fixed;inset:0;z-index:-2;overflow:hidden;background:var(--bg)}
.bg::before{ /* warm key light top */
  content:"";position:absolute;inset:-20%;
  background:
    radial-gradient(60% 45% at 50% 0%, rgba(197,160,89,.16), transparent 60%),
    radial-gradient(50% 50% at 85% 20%, rgba(212,175,55,.06), transparent 60%),
    radial-gradient(70% 60% at 15% 90%, rgba(197,160,89,.05), transparent 60%);
  filter:saturate(1.05);
}
.bg::after{ /* vignette */
  content:"";position:absolute;inset:0;
  background:radial-gradient(120% 90% at 50% 30%, transparent 55%, rgba(0,0,0,.55) 100%);
}
/* faint architectural verticals */
.bg-lines{position:fixed;inset:0;z-index:-1;pointer-events:none;
  background-image:repeating-linear-gradient(90deg,
     rgba(255,255,255,.018) 0 1px, transparent 1px 96px);
  mask-image:linear-gradient(180deg,transparent,#000 25%,#000 75%,transparent);
  opacity:.6;}
/* subtle grain */
.bg-grain{position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.05;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");}
/* giant ghost A watermark */
.bg-mark{position:fixed;right:-6vw;bottom:-12vh;z-index:-1;width:min(58vw,640px);
  opacity:.035;filter:grayscale(1) brightness(2);pointer-events:none;user-select:none}

/* ---------- Shell ---------- */
.shell{
  position:relative;
  min-height:100dvh;
  display:flex;flex-direction:column;
  max-width:var(--maxw);
  margin-inline:auto;
  padding:clamp(18px,4vw,34px) clamp(16px,4vw,28px) 0;
}

/* ---------- Header ---------- */
.top{display:flex;align-items:center;justify-content:center;position:relative;padding-bottom:18px}
.brand{display:inline-flex;align-items:center;gap:14px;text-decoration:none}
.brand img{height:clamp(26px,4.4vw,34px);width:auto;opacity:.96}
.brand .estd{font-family:var(--serif);font-size:.62rem;letter-spacing:.42em;color:var(--gold);
  text-transform:uppercase;padding-left:14px;border-left:1px solid var(--line);align-self:center;
  margin-top:2px}
@media(max-width:520px){.brand .estd{display:none}}

/* progress */
.progress{position:relative;height:2px;background:var(--line-soft);border-radius:2px;overflow:hidden;margin-bottom:6px}
.progress > i{position:absolute;inset:0 auto 0 0;width:0%;
  background:linear-gradient(90deg,var(--gold),var(--gold-hi));
  box-shadow:0 0 14px rgba(212,175,55,.5);
  transition:width .6s var(--ease)}
.progress-meta{display:flex;justify-content:space-between;align-items:center;
  font-size:.66rem;letter-spacing:.22em;text-transform:uppercase;color:var(--muted);
  margin:10px 2px 0;min-height:14px}
.progress-meta b{color:var(--gold);font-weight:600}
.progress-wrap{transition:opacity .4s ease}
.progress-wrap[hidden]{display:block;opacity:0;pointer-events:none;height:0;overflow:hidden;margin:0}

/* ---------- Stage / steps ---------- */
.stage{flex:1;display:flex;align-items:center;width:100%;padding:clamp(20px,5vw,40px) 0}
.step{width:100%;display:none}
.step.is-active{display:block;animation:rise .6s var(--ease) both}
@keyframes rise{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}

.eyebrow{font-family:var(--serif);font-size:.72rem;letter-spacing:.34em;text-transform:uppercase;
  color:var(--gold);display:inline-flex;align-items:center;gap:12px;margin-bottom:18px}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--gold);opacity:.7}

/* ---------- Intro ---------- */
.intro{text-align:center}
.intro .wordmark{width:min(78vw,360px);margin:6px auto 26px;opacity:.97;
  filter:drop-shadow(0 8px 30px rgba(0,0,0,.6))}
.intro .kicker{font-family:var(--serif);font-size:.74rem;letter-spacing:.44em;text-transform:uppercase;
  color:var(--gold);margin-bottom:18px}
.intro h1{font-family:var(--serif);font-weight:700;line-height:1.12;
  font-size:clamp(1.9rem,6vw,3rem);letter-spacing:.01em;margin-bottom:8px}
.intro h1 .light{display:block;font-weight:400;color:var(--ink-soft);font-size:.62em;
  letter-spacing:.04em;margin-top:8px}
.rule{width:64px;height:1px;background:var(--gold);margin:26px auto;position:relative}
.rule::before,.rule::after{content:"";position:absolute;top:50%;width:5px;height:5px;
  border:1px solid var(--gold);transform:translateY(-50%) rotate(45deg)}
.rule::before{left:-12px}.rule::after{right:-12px}
.intro p.lede{max-width:62ch;margin:0 auto;color:var(--ink-soft);font-size:clamp(.95rem,2.4vw,1.06rem);
  font-weight:300}
.badges{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin:30px 0 8px}
.badge{display:inline-flex;align-items:center;gap:8px;font-size:.74rem;letter-spacing:.06em;
  color:var(--ink-soft);border:1px solid var(--line);border-radius:999px;padding:8px 16px;
  background:rgba(255,255,255,.015)}
.badge svg{width:15px;height:15px;stroke:var(--gold);fill:none;stroke-width:1.6}

/* ---------- Question ---------- */
.q-title{font-family:var(--serif);font-weight:700;line-height:1.28;
  font-size:clamp(1.35rem,4.4vw,2rem);letter-spacing:.005em;margin-bottom:6px;max-width:24ch}
.q-hint{color:var(--muted);font-size:.82rem;letter-spacing:.04em;margin-bottom:22px;
  display:inline-flex;align-items:center;gap:10px}
.q-hint .count{color:var(--gold);border:1px solid var(--line);border-radius:999px;
  padding:2px 11px;font-size:.72rem;font-weight:600;letter-spacing:.06em;transition:.3s var(--ease)}
.q-hint .count.full{background:var(--gold);color:#1a1300;border-color:var(--gold)}

.options{display:grid;gap:11px;margin-top:4px}
.opt{
  --d:0ms;
  position:relative;display:flex;align-items:center;gap:16px;
  width:100%;text-align:left;
  padding:17px 18px;
  border:1px solid var(--line-soft);border-radius:14px;
  background:linear-gradient(180deg,rgba(255,255,255,.025),rgba(255,255,255,.008));
  color:var(--ink);
  transition:border-color .25s var(--ease),background .25s var(--ease),transform .25s var(--ease),box-shadow .25s var(--ease);
  animation:optin .5s var(--ease) both;animation-delay:var(--d);
}
@keyframes optin{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.opt:hover{border-color:var(--line);transform:translateY(-2px);
  background:linear-gradient(180deg,rgba(197,160,89,.07),rgba(197,160,89,.02))}
.opt:focus-visible{outline:none;border-color:var(--gold);box-shadow:0 0 0 3px rgba(197,160,89,.25)}
.opt .marker{flex:0 0 auto;width:24px;height:24px;border-radius:50%;
  border:1.5px solid rgba(197,160,89,.5);position:relative;transition:.25s var(--ease)}
.opt[data-multi="1"] .marker{border-radius:7px}
.opt .marker::after{content:"";position:absolute;inset:0;margin:auto;
  width:10px;height:10px;border-radius:inherit;background:var(--gold);
  transform:scale(0);transition:transform .25s var(--ease)}
.opt[data-multi="1"] .marker::after{width:13px;height:13px;border-radius:4px;
  background:none;border:solid var(--gold);border-width:0 2px 2px 0;
  transform:rotate(45deg) scale(0);margin-top:-2px;width:6px;height:11px}
.opt .label{font-size:clamp(.95rem,2.6vw,1.04rem);font-weight:400;letter-spacing:.01em}
.opt .key{position:absolute;right:16px;top:50%;transform:translateY(-50%);
  font-size:.7rem;color:var(--muted);border:1px solid var(--line-soft);border-radius:6px;
  width:20px;height:20px;display:grid;place-items:center;opacity:.7;transition:.25s var(--ease)}
@media(hover:none){.opt .key{display:none}}

.opt.is-selected{
  border-color:var(--gold);
  background:linear-gradient(180deg,rgba(197,160,89,.16),rgba(197,160,89,.05));
  box-shadow:0 6px 26px rgba(0,0,0,.35),inset 0 0 0 1px rgba(255,242,176,.12);
}
.opt.is-selected .marker{border-color:var(--gold)}
.opt.is-selected .marker::after{transform:scale(1)}
.opt[data-multi="1"].is-selected .marker::after{transform:rotate(45deg) scale(1)}
.opt.is-selected .label{color:#fff}
.opt.is-disabled{opacity:.42;pointer-events:none}

/* ---------- Footer nav ---------- */
.nav{display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:18px 0 max(18px,env(safe-area-inset-bottom));margin-top:auto;
  border-top:1px solid var(--line-soft)}
.nav[hidden]{display:none}
.btn{display:inline-flex;align-items:center;gap:11px;border-radius:999px;
  padding:13px 26px;font-size:.82rem;letter-spacing:.16em;text-transform:uppercase;font-weight:600;
  transition:.28s var(--ease)}
.btn svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.8}
.btn-ghost{color:var(--muted)}
.btn-ghost:hover{color:var(--ink)}
.btn-ghost[hidden]{visibility:hidden;display:inline-flex}
/* double-frame gold button (brand element) */
.btn-gold{position:relative;color:#1c1503;background:linear-gradient(180deg,var(--gold-hi),var(--gold));
  box-shadow:0 8px 26px rgba(197,160,89,.28)}
.btn-gold::after{content:"";position:absolute;inset:4px;border:1px solid rgba(28,21,3,.35);border-radius:999px;pointer-events:none}
.btn-gold:hover{transform:translateY(-2px);box-shadow:0 12px 32px rgba(197,160,89,.4);
  background:linear-gradient(180deg,#fff7cf,var(--gold-2))}
.btn-gold:disabled{opacity:.35;cursor:not-allowed;transform:none;box-shadow:none;
  background:var(--panel-2);color:var(--muted)}
.btn-gold:disabled::after{border-color:var(--line-soft)}
.btn.is-cta{padding:16px 40px;font-size:.86rem}

/* ---------- Thank you ---------- */
.done{text-align:center}
.seal{width:108px;height:108px;margin:0 auto 26px;border-radius:50%;
  display:grid;place-items:center;position:relative;
  border:1px solid var(--line);background:radial-gradient(circle at 50% 35%,rgba(197,160,89,.18),transparent 70%)}
.seal::before{content:"";position:absolute;inset:8px;border:1px solid var(--line);border-radius:50%}
.seal svg{width:46px;height:46px;stroke:var(--gold);fill:none;stroke-width:1.6}
.done h2{font-family:var(--serif);font-weight:700;font-size:clamp(1.7rem,5vw,2.4rem);margin-bottom:12px}
.done p{color:var(--ink-soft);max-width:50ch;margin:0 auto;font-weight:300}
.done .home{margin-top:30px;display:inline-flex}

/* ---------- Page footer credit ---------- */
.credit{display:flex;align-items:center;justify-content:center;gap:8px;
  padding:16px 0 22px;font-size:.66rem;letter-spacing:.18em;text-transform:uppercase;
  color:rgba(140,134,123,.5)}
.credit a{color:rgba(197,160,89,.55);text-decoration:none;transition:.25s}
.credit a:hover{color:var(--gold)}
.credit .dot{width:3px;height:3px;border-radius:50%;background:currentColor;opacity:.5}

/* ---------- Motion preference ---------- */
@media(prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;transition-duration:.001ms!important}
}

/* ---------- Small screens ---------- */
@media(max-width:560px){
  .stage{padding:18px 0}
  .nav{position:sticky;bottom:0;background:linear-gradient(180deg,rgba(12,12,13,0),var(--bg) 30%);
    backdrop-filter:blur(2px)}
  .btn{padding:13px 20px}
  .btn.is-cta{width:100%;justify-content:center}
}