/* birk store Mini App — style copied from birkstore.ru (Inter + Space Grotesk, #4E73C8 / #1C1F3D, soft cards) */
:root{
  --bg:#F4F7FF; --surface:#FFFFFF; --surface-2:#EEF2FB; --line:#E1E9F8;
  --text:#0D1526; --text-2:#1C1F3D; --muted:#5B6B8C; --muted-2:#8E9AC4;
  --accent:#4E73C8; --accent-press:#3A5DAE; --accent-soft:#E8EEF9; --brand-blue:#2F6BF0; --price:#12306B;
  --danger:#FF4053; --ok:#00B357;
  --shadow:0 14px 34px -20px rgba(10,28,63,.28); --shadow-bar:0 -2px 14px rgba(31,32,63,.10);
  --hero:linear-gradient(135deg,#1C1F3D 0%,#4E73C8 100%);
  --r:16px; --safe-b:env(safe-area-inset-bottom,0px);
}
[data-theme="dark"]{
  --bg:#0F1226; --surface:#181C36; --surface-2:#222849; --line:#2A3157;
  --text:#EEF2FB; --text-2:#E1E9F8; --muted:#9AA0B4; --muted-2:#7A84AC;
  --accent:#5A80D6; --accent-press:#4E73C8; --accent-soft:#232B52; --brand-blue:#7EA2FF; --price:#BFD0FF;
  --shadow:0 14px 34px -20px rgba(0,0,0,.7); --shadow-bar:0 -2px 14px rgba(0,0,0,.35);
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,system-ui,-apple-system,sans-serif;font-size:15px;-webkit-font-smoothing:antialiased}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,textarea{font-family:inherit;font-size:16px;color:var(--text)}
svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
[hidden]{display:none!important}
body.lock{overflow:hidden}

/* header */
.topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;height:60px;padding:0 16px;background:var(--surface);box-shadow:0 4px 18px -12px rgba(31,32,63,.25)}
.logo-wrap{display:flex;align-items:center;height:40px;padding:3px 8px 3px 0;border-radius:10px}
[data-theme="dark"] .logo-wrap{background:#fff;padding:3px 8px}
.logo{height:34px;width:auto;display:block}
.top-actions{display:flex;gap:6px}
.icon-btn{position:relative;width:40px;height:40px;border-radius:50%;display:grid;place-items:center;color:var(--text-2)}
.icon-btn:active{background:var(--surface-2)}
.badge{position:absolute;top:2px;right:0;min-width:18px;height:18px;padding:0 5px;border-radius:9px;background:var(--danger);color:#fff;font:700 11px/18px Inter,sans-serif;text-align:center}

main{padding:12px 16px calc(84px + var(--safe-b))}

/* hero */
.hero{background:var(--hero);color:#fff;border-radius:20px;padding:22px 20px 20px;box-shadow:var(--shadow);position:relative;overflow:hidden}
.hero:after{content:"";position:absolute;right:-50px;top:-50px;width:180px;height:180px;border-radius:50%;background:rgba(255,255,255,.08)}
.hero-kicker{font:700 11.2px Inter;letter-spacing:.06em;text-transform:uppercase;opacity:.75}
.hero h1{margin:6px 0 6px;font:700 26px/1.15 Inter,sans-serif;letter-spacing:-.01em}
.hero p{margin:0 0 14px;opacity:.88;font-size:14px;line-height:1.45;max-width:300px}
.hero-pills{display:flex;flex-wrap:wrap;gap:8px}
.hero-pills span{background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.22);padding:6px 12px;border-radius:100px;font-size:12.5px;font-weight:600}

/* search + chips */
.search{margin:14px 0 10px;display:flex;align-items:center;gap:8px;background:var(--surface);border:1px solid var(--line);border-radius:100px;padding:0 14px;height:46px}
.search svg{width:20px;height:20px;color:var(--muted-2);flex:none}
.search input{flex:1;border:0;outline:0;background:transparent;height:100%}
.chips{display:flex;gap:8px;overflow-x:auto;margin:0 -16px;padding:2px 16px 6px;scrollbar-width:none}
.chips::-webkit-scrollbar{display:none}
.chip{flex:none;height:36px;padding:0 16px;border-radius:100px;background:var(--surface);border:1px solid var(--line);color:var(--text-2);font-weight:600;font-size:13.5px;white-space:nowrap}
.chip.active{background:var(--accent);border-color:var(--accent);color:#fff}
.section-head{display:flex;align-items:baseline;justify-content:space-between;margin:14px 2px 10px}
.section-head h2{margin:0;font:700 20px Inter;color:var(--text-2)}
.section-head span{color:var(--muted);font-size:13px}

/* grid + cards (site .product-card) */
.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
@media (min-width:640px){.grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.card{background:var(--surface);border-radius:var(--r);box-shadow:var(--shadow);overflow:hidden;display:flex;flex-direction:column;text-align:left}
.card:active{transform:scale(.985)}
.ph{aspect-ratio:1/1;background:var(--surface-2);display:grid;place-items:center;overflow:hidden}
.ph img{width:100%;height:100%;object-fit:cover;display:block}
.ph.empty{color:var(--muted-2);text-align:center;font-size:11.5px;font-weight:600;gap:4px;align-content:center}
.ph.empty svg{width:34px;height:34px;stroke-width:1.5;margin:0 auto}
.card-body{padding:10px 12px 12px;display:flex;flex-direction:column;flex:1}
.cat{font:700 11.2px Inter;letter-spacing:.05em;text-transform:uppercase;color:var(--brand-blue);margin-bottom:4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.name{font-weight:600;font-size:14.08px;line-height:1.3;color:var(--text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:2.6em}
.tiers{margin:8px 0 6px;display:flex;flex-direction:column;gap:2px}
.tier{display:flex;justify-content:space-between;gap:6px;font-size:12.5px;color:var(--muted)}
.tier b{font:700 13px "Space Grotesk",sans-serif;color:var(--price);white-space:nowrap}
.tier.main{font-size:12.5px}
.tier.main b{font-size:16.8px}
.meta{font-size:12px;color:var(--muted);line-height:1.5}
.meta .retail{color:var(--muted)}
.meta .retail s{opacity:.9}
.btn{height:44px;border-radius:100px;background:var(--accent);color:#fff;font-weight:600;font-size:15px;display:flex;align-items:center;justify-content:center;gap:8px;width:100%}
.btn:active{background:var(--accent-press)}
.btn.small{height:38px;font-size:14px;margin-top:auto}
.card .btn.small{margin-top:10px}
.btn.outline{background:var(--surface);color:var(--accent);border:1.5px solid var(--accent)}
.btn.dark{background:#1C1F3D}
[data-theme="dark"] .btn.dark{background:#fff;color:#1C1F3D}
.btn:disabled{opacity:.5}

.empty{margin:30px 0;text-align:center;color:var(--muted);background:var(--surface);border-radius:var(--r);padding:36px 20px;box-shadow:var(--shadow)}
.empty .big{font-size:40px;margin-bottom:8px}
.empty h3{margin:0 0 6px;color:var(--text-2);font-size:17px}

/* bottom bar (site t975) */
.bottombar{position:fixed;left:0;right:0;bottom:0;z-index:30;display:flex;background:var(--surface);box-shadow:var(--shadow-bar);padding:6px 0 calc(6px + var(--safe-b))}
.tab{position:relative;flex:1;display:flex;flex-direction:column;align-items:center;gap:3px;font-size:12px;color:var(--text-2);letter-spacing:.02em}
.tab svg{width:24px;height:24px}
.tab.active{color:var(--accent)}
.tab .badge{top:-2px;right:calc(50% - 22px)}

/* sheets */
.backdrop{position:fixed;inset:0;background:rgba(13,21,38,.45);z-index:40;backdrop-filter:blur(2px)}
.sheet{position:fixed;left:0;right:0;bottom:0;z-index:50;max-height:94vh;overflow-y:auto;background:var(--bg);border-radius:22px 22px 0 0;transform:translateY(105%);transition:transform .28s cubic-bezier(.2,.8,.2,1);padding-bottom:calc(16px + var(--safe-b));overscroll-behavior:contain}
.sheet.open{transform:none}
.grab{width:40px;height:5px;border-radius:3px;background:var(--line);margin:8px auto 0}
.sheet-close{position:absolute;top:12px;right:12px;width:36px;height:36px;border-radius:50%;background:rgba(255,255,255,.9);color:#1C1F3D;display:grid;place-items:center;z-index:2;box-shadow:0 2px 10px rgba(0,0,0,.12)}
.sheet-close svg{width:20px;height:20px}
.detail-ph{aspect-ratio:1/1;max-height:52vh;width:100%;margin-top:8px}
.detail-ph.ph img{object-fit:contain;background:#fff}
.pad{padding:16px}
.detail-name{font:700 21px/1.25 Inter;margin:2px 0 12px;color:var(--text-2)}
.box{background:var(--surface);border-radius:var(--r);padding:14px;box-shadow:var(--shadow);margin-bottom:12px}
.box h4{margin:0 0 8px;font-size:13px;text-transform:uppercase;letter-spacing:.05em;color:var(--muted)}
.tier-row{display:flex;justify-content:space-between;align-items:center;padding:9px 10px;border-radius:12px;font-size:14.5px;color:var(--text)}
.tier-row b{font:700 17px "Space Grotesk",sans-serif;color:var(--price)}
.tier-row.on{background:var(--accent-soft);outline:1.5px solid var(--accent)}
.kv{display:flex;justify-content:space-between;font-size:14px;padding:6px 10px;color:var(--muted)}
.kv b{color:var(--text);font-weight:600}
.desc{white-space:pre-line;line-height:1.55;font-size:14.5px;color:var(--text)}
.colors{display:flex;flex-wrap:wrap;gap:8px}
.colors .chip{height:34px;font-size:13px}
.qty-row{display:flex;align-items:center;justify-content:space-between;gap:12px}
.stepper{display:flex;align-items:center;background:var(--surface-2);border-radius:100px;padding:4px}
.stepper button{width:38px;height:38px;border-radius:50%;background:var(--surface);font-size:20px;font-weight:600;color:var(--accent);box-shadow:0 1px 4px rgba(0,0,0,.06)}
.stepper input{width:64px;text-align:center;border:0;background:transparent;font:700 17px "Space Grotesk",sans-serif;outline:0}
.sum{text-align:right}
.sum small{display:block;color:var(--muted);font-size:12px}
.sum b{font:700 20px "Space Grotesk",sans-serif;color:var(--price)}
.hint{font-size:12.5px;color:var(--muted);margin-top:8px}
.hint.warn{color:var(--danger)}
.actions{display:flex;gap:10px;position:sticky;bottom:0;padding:12px 16px calc(4px + var(--safe-b));background:linear-gradient(transparent,var(--bg) 30%)}
.actions .btn{flex:1}

.cart-title{font:700 21px Inter;margin:14px 16px 10px;color:var(--text-2)}
.line{display:flex;gap:12px;background:var(--surface);border-radius:var(--r);padding:10px;box-shadow:var(--shadow);margin:0 16px 10px}
.line .ph{width:72px;height:72px;flex:none;border-radius:12px;aspect-ratio:auto}
.line .ph.empty svg{width:22px;height:22px}
.line-body{flex:1;min-width:0}
.line-name{font-weight:600;font-size:14px;line-height:1.3}
.line-sub{font-size:12px;color:var(--muted);margin:2px 0 6px}
.line-foot{display:flex;align-items:center;justify-content:space-between;gap:8px}
.line .stepper{padding:2px}
.line .stepper button{width:30px;height:30px;font-size:17px}
.line .stepper input{width:48px;font-size:15px}
.line-sum{font:700 15px "Space Grotesk";color:var(--price);white-space:nowrap}
.rm{color:var(--muted-2);font-size:12px;text-decoration:underline;margin-top:4px}
.field{display:block;margin:0 0 10px}
.field span{display:block;font-size:12.5px;color:var(--muted);margin:0 0 5px 4px}
.field input,.field textarea{width:100%;border:1px solid var(--line);background:var(--surface);border-radius:14px;padding:12px 14px;outline:0}
.field input:focus,.field textarea:focus{border-color:var(--accent)}
.field textarea{min-height:72px;resize:vertical}
.total-row{display:flex;justify-content:space-between;align-items:baseline;font-size:15px;margin:4px 2px}
.total-row b{font:700 24px "Space Grotesk";color:var(--price)}
.success{text-align:center;padding:40px 24px}
.success .big{font-size:56px}
.success h3{font-size:21px;margin:10px 0 6px;color:var(--text-2)}
.success p{color:var(--muted);line-height:1.5}
.toast{position:fixed;left:50%;bottom:calc(84px + var(--safe-b));transform:translateX(-50%);background:#1C1F3D;color:#fff;padding:10px 16px;border-radius:100px;font-size:14px;z-index:60;box-shadow:0 8px 24px rgba(0,0,0,.25);max-width:90vw;text-align:center}
.mode-box{margin:0 16px 10px;padding:12px 14px;border-radius:var(--r);background:var(--accent-soft);border:1px solid var(--line)}
.mode-box b{display:block;font-size:15px;color:var(--text-2)}
.mode-box span{display:block;font-size:12.5px;color:var(--muted);margin-top:3px}
.mode-box.opt b{color:var(--ok)}
.mode-box.retail b{color:var(--accent)}
.mode-box.warn{border-color:var(--danger)}
.mode-box.warn b{color:var(--danger)}
.tg-me{font-size:13px;color:var(--text-2);margin:0 4px 12px;line-height:1.4}
.tg-me a{color:var(--accent)}
.tg-me small{display:block;color:var(--muted);font-size:11.5px}
.btn:disabled{opacity:.55;pointer-events:none}
/* model / compatibility line — subtle */
.model{display:flex;align-items:flex-start;gap:4px;margin:3px 0 6px;font-size:12px;line-height:1.35;font-weight:400;color:var(--muted);letter-spacing:.01em}
.model svg{flex:none;width:12px;height:12px;margin-top:1.5px;fill:none;stroke:currentColor;stroke-width:1.6;opacity:.75}
.model span{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.model.full{font-size:13px;margin:4px 0 10px}
.model.full span{-webkit-line-clamp:unset;display:block}
.line .model{margin:1px 0 2px;font-size:11.5px}
/* price on request — subtle caption */
.on-req{display:flex;align-items:center;gap:5px;margin:6px 0 10px;font-size:12.5px;font-weight:400;color:var(--muted);line-height:1.35}
.on-req svg{flex:none;width:13px;height:13px;fill:none;stroke:currentColor;stroke-width:1.6;opacity:.8}
.on-req.big{font-size:14px;margin:2px 0 14px;padding:10px 12px;border-radius:12px;background:var(--accent-soft)}

/* «Акции и товары недели» */
.feat{margin:6px 0 4px}
.feat .section-head{margin-top:6px}
.link-btn{color:var(--accent);font:600 14px Inter,sans-serif;background:none;border:0;padding:4px 2px}
.feat-row{display:grid;grid-auto-flow:column;grid-auto-columns:minmax(150px,44%);gap:12px;overflow-x:auto;scroll-snap-type:x mandatory;padding:2px 2px 10px;margin:0 -2px;scrollbar-width:none}
.feat-row::-webkit-scrollbar{display:none}
.feat-row .card{scroll-snap-align:start}
@media (min-width:640px){.feat-row{grid-auto-columns:minmax(170px,30%)}}
.tab-l{display:block;max-width:100%;padding:0 4px;font-size:11px;line-height:1.15;text-align:center;white-space:normal}
.tab[hidden]{display:none}

/* promo code */
.promo-box{margin:6px 0 12px}
.promo-row{display:flex;gap:8px}
.promo-row input{flex:1;min-width:0;height:42px;border-radius:12px;border:1px solid var(--line,rgba(127,127,127,.25));background:var(--surface);color:var(--text);padding:0 12px;font:500 15px Inter,sans-serif;text-transform:uppercase}
.promo-row .btn.small{margin:0;width:auto;padding:0 14px;height:42px}
.promo-ok{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:10px 12px;border-radius:12px;background:rgba(52,168,83,.12);color:var(--text);font-size:14px}
.total-row s.old{color:var(--muted);font-weight:500;font-size:.85em;margin-right:4px}