/* ============================================================
   MEDOINO — design system
   Identita dosky plošných spojov: chladný "paper" podklad,
   Arduino-teal ako primárna, jantárový "signal" akcent,
   tmavé "board" pásy. Signatúra: medené traces (spoje).
   ============================================================ */

:root {
  /* Farby — pôvodná colorway medoino.sk: čierna + ružový akcent + krémová */
  --paper:      #f7f2ea;
  --paper-2:    #fffdf9;
  --card:       #ffffff;
  --ink:        #212121;
  --ink-soft:   #3d3936;
  --muted:      #7c756c;
  --line:       #e9e1d6;
  --line-soft:  #f2ece3;

  --teal:       #f06c8e;   /* primárny akcent (pôvodná ružová #F06C8E) */
  --teal-deep:  #d94e73;
  --teal-tint:  #fce7ec;
  --teal-ink:   #7d2340;

  --board:      #1b1a19;   /* tmavý charcoal pás */
  --board-2:    #2c2724;
  --board-line: rgba(240, 108, 142, 0.28);

  --signal:     #f06c8e;   /* akcent (rovnaká ružová) */
  --signal-deep:#d94e73;
  --signal-tint:#fce7ec;

  /* Typografia */
  --font-display: "Space Grotesk", system-ui, sans-serif;
  --font-body:    "IBM Plex Sans", system-ui, sans-serif;
  --font-mono:    "IBM Plex Mono", ui-monospace, Menlo, monospace;

  /* Tvary */
  --r-lg: 26px;
  --r:    18px;
  --r-sm: 11px;
  --maxw: 1200px;
  --shadow-sm: 0 2px 8px rgba(8, 19, 15, 0.05);
  --shadow:    0 18px 44px -18px rgba(8, 19, 15, 0.28);
  --shadow-lg: 0 40px 80px -30px rgba(8, 19, 15, 0.42);

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.62;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
button { font-family: inherit; }
::selection { background: var(--signal); color: var(--ink); }

h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 600; margin: 0; line-height: 1.08; letter-spacing: -0.02em; }

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 clamp(20px, 4vw, 40px); }
.section { padding: clamp(64px, 9vw, 118px) 0; }
.section-tight { padding: clamp(44px, 6vw, 80px) 0; }

/* ---------- Eyebrow (mono, s "via" nódom) ---------- */
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-mono); font-size: 12px; font-weight: 500;
  letter-spacing: 0.18em; text-transform: uppercase; color: var(--teal-deep);
}
.eyebrow::before {
  content: ""; width: 7px; height: 7px; border-radius: 50%;
  background: var(--signal); box-shadow: 0 0 0 4px var(--signal-tint);
}
.eyebrow.on-dark { color: #f6b8ca; }
.eyebrow.on-dark::before { box-shadow: 0 0 0 4px rgba(240,108,142,0.16); }

.section-head { max-width: 640px; margin-bottom: clamp(32px, 5vw, 56px); }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head h2 { font-size: clamp(1.9rem, 3.6vw, 2.9rem); margin: 16px 0 14px; }
.section-head p { color: var(--muted); font-size: 1.075rem; margin: 0; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  font-family: var(--font-display); font-weight: 600; font-size: 15px;
  padding: 13px 24px; border-radius: 999px; border: 1.5px solid transparent;
  cursor: pointer; transition: transform 0.18s var(--ease), background 0.18s, box-shadow 0.2s, border-color 0.2s, color 0.18s;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--ink); color: #fff; box-shadow: 0 10px 24px -12px rgba(33,33,33,0.5); }
.btn-primary:hover { background: var(--teal); color: #fff; box-shadow: 0 14px 30px -12px rgba(240,108,142,0.6); }
.btn-dark { background: var(--ink); color: #fff; }
.btn-dark:hover { background: #12241d; }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--teal); color: var(--teal-deep); background: var(--paper-2); }
.btn-ghost.on-dark { color: #faf5f0; border-color: rgba(255,255,255,0.28); }
.btn-ghost.on-dark:hover { border-color: var(--signal); color: var(--signal); background: rgba(255,255,255,0.04); }
.btn-lg { padding: 16px 30px; font-size: 16px; }
.btn-block { width: 100%; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 60;
  background: rgba(238, 242, 240, 0.72);
  backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s, background 0.3s, box-shadow 0.3s;
}
.site-header.scrolled { border-color: var(--line); background: rgba(242, 246, 244, 0.9); box-shadow: var(--shadow-sm); }
.nav { display: flex; align-items: center; gap: 26px; height: 72px; }
.logo { display: flex; align-items: center; gap: 11px; font-family: var(--font-display); font-weight: 700; font-size: 20px; letter-spacing: -0.02em; }
.logo .mark { width: 30px; height: 30px; border-radius: 9px; background: var(--ink); display: grid; place-items: center; position: relative; }
.logo .mark::before { content: ""; width: 15px; height: 8px; border: 2px solid var(--signal); border-radius: 999px; box-shadow: 7px 0 0 -2px var(--teal); }
.logo small { font-family: var(--font-mono); font-weight: 500; font-size: 12px; color: var(--muted); letter-spacing: 0.04em; }
.nav-links { display: flex; gap: 22px; margin-left: 6px; }
.nav-links a { color: var(--ink-soft); font-weight: 500; font-size: 15px; position: relative; padding: 4px 0; }
.nav-links a::after { content: ""; position: absolute; left: 0; bottom: -2px; width: 0; height: 2px; background: var(--teal); transition: width 0.25s var(--ease); }
.nav-links a:hover::after { width: 100%; }
.nav-spacer { flex: 1; }
.cart-btn { position: relative; }
.cart-count {
  position: absolute; top: -7px; right: -7px; background: var(--signal); color: var(--ink);
  font-family: var(--font-mono); font-size: 11px; font-weight: 600; min-width: 20px; height: 20px;
  border-radius: 999px; display: grid; place-items: center; padding: 0 5px; border: 2px solid var(--paper);
}
.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--ink); border-radius: 2px; }
.nav-toggle span + span { margin-top: 5px; }

/* ---------- PCB substrate (jemná textúra spojov) ---------- */
.substrate { position: absolute; inset: 0; z-index: 0; pointer-events: none; opacity: 0.5; }

/* ---------- Hero ---------- */
.hero { position: relative; padding: clamp(56px, 8vw, 96px) 0 clamp(48px, 6vw, 80px); overflow: hidden; }
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.05fr 0.95fr; gap: clamp(32px, 5vw, 72px); align-items: center; }
.hero h1 { font-size: clamp(2.5rem, 5.6vw, 4.3rem); font-weight: 600; letter-spacing: -0.035em; margin: 22px 0 20px; }
.hero h1 .hl { color: var(--teal-deep); position: relative; white-space: nowrap; }
.hero h1 .hl::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0.08em; height: 0.12em; background: var(--signal); opacity: 0.55; border-radius: 2px; }
.hero .lead { font-size: clamp(1.05rem, 1.6vw, 1.25rem); color: var(--ink-soft); max-width: 520px; margin: 0; }
.hero-cta { display: flex; gap: 13px; margin-top: 30px; flex-wrap: wrap; }
.trust { display: flex; align-items: center; gap: 20px; margin-top: 30px; flex-wrap: wrap; }
.trust .stars { color: var(--signal); font-size: 15px; letter-spacing: 2px; }
.trust .t-txt { font-size: 14px; color: var(--muted); }
.trust .t-txt b { color: var(--ink); font-family: var(--font-mono); }

/* Board card (pravá strana hero) */
.hero-stage { position: relative; }
.board-card {
  background: linear-gradient(158deg, var(--board-2), var(--board));
  border-radius: var(--r-lg); padding: 16px; box-shadow: var(--shadow-lg);
  position: relative; border: 1px solid rgba(255,255,255,0.06);
}
.board-card::before, .board-card::after {
  content: ""; position: absolute; width: 12px; height: 12px; border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #ffd0dc, var(--signal) 60%, #a83354);
  box-shadow: 0 0 12px rgba(240,108,142,0.5);
}
.board-card::before { top: 14px; right: 14px; }
.board-card::after { bottom: 78px; left: 14px; }
.board-top { display: flex; justify-content: space-between; align-items: center; padding: 4px 8px 12px; }
.board-top .tag { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.1em; color: #f6b8ca; }
.board-top .rail { display: flex; gap: 5px; }
.board-top .rail i { width: 16px; height: 5px; border-radius: 2px; background: var(--board-line); }
.board-card img { width: 100%; height: 300px; object-fit: cover; border-radius: 14px; }
.board-chips { display: flex; flex-wrap: wrap; gap: 7px; padding: 14px 6px 6px; }
.board-chips span { font-family: var(--font-mono); font-size: 12px; color: #f3d9df; background: rgba(240,108,142,0.12); border: 1px solid var(--board-line); padding: 5px 11px; border-radius: 999px; }

/* Signal flow: kit → kód → akadémia */
.flow-link { position: relative; margin-top: 14px; padding-top: 26px; display: flex; align-items: center; gap: 10px; justify-content: center; }
.flow-link .wire { position: absolute; top: -2px; left: 50%; width: 2px; height: 26px; background: repeating-linear-gradient(var(--teal) 0 5px, transparent 5px 10px); }
.flow-link .pulse { position: absolute; top: -2px; left: calc(50% - 3px); width: 8px; height: 8px; border-radius: 50%; background: var(--signal); box-shadow: 0 0 10px var(--signal); animation: flow 2.4s var(--ease) infinite; }
@keyframes flow { 0% { transform: translateY(0); opacity: 0; } 20% { opacity: 1; } 80% { opacity: 1; } 100% { transform: translateY(24px); opacity: 0; } }
.chip {
  display: inline-flex; align-items: center; gap: 7px; font-family: var(--font-mono);
  font-size: 13px; font-weight: 500; padding: 8px 14px; border-radius: 10px;
  background: var(--card); border: 1px solid var(--line); box-shadow: var(--shadow-sm);
}
.chip.kod { color: var(--teal-deep); border-color: var(--teal-tint); }
.chip.akad { background: var(--ink); color: #faf5f0; border-color: var(--ink); }
.flow-arrow { color: var(--muted); font-size: 16px; }

/* ---------- Component belt (marquee) ---------- */
.belt { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--paper-2); overflow: hidden; }
.belt-track { display: flex; gap: 48px; padding: 16px 0; white-space: nowrap; animation: belt 32s linear infinite; width: max-content; }
.belt-track span { font-family: var(--font-mono); font-size: 13px; letter-spacing: 0.08em; color: var(--muted); display: inline-flex; align-items: center; gap: 48px; }
.belt-track span::after { content: "●"; color: var(--signal); font-size: 7px; }
@keyframes belt { to { transform: translateX(-50%); } }

/* ---------- Duality ---------- */
.duality-grid { display: grid; grid-template-columns: 1fr auto 1fr; gap: clamp(14px, 3vw, 34px); align-items: stretch; }
.world {
  border-radius: var(--r-lg); overflow: hidden; position: relative; min-height: 340px;
  display: flex; flex-direction: column; justify-content: flex-end; color: #fff;
  box-shadow: var(--shadow);
}
.world img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.world .veil { position: absolute; inset: 0; background: linear-gradient(0deg, rgba(20,18,17,0.9) 8%, rgba(20,18,17,0.15) 65%); }
.world .w-body { position: relative; padding: 26px; }
.world .w-kicker { font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--signal); }
.world h3 { font-size: 1.6rem; margin: 8px 0 8px; color: #fff; }
.world p { margin: 0; color: rgba(255,255,255,0.82); font-size: 0.98rem; }
.duality-join { display: grid; place-items: center; }
.duality-join .node {
  width: 62px; height: 62px; border-radius: 50%; background: var(--card); border: 1.5px solid var(--line);
  display: grid; place-items: center; font-family: var(--font-mono); font-weight: 600; color: var(--teal-deep);
  box-shadow: var(--shadow); font-size: 20px;
}

/* ---------- Products ---------- */
.products { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.pcard {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--r);
  overflow: hidden; display: flex; flex-direction: column; position: relative;
  transition: transform 0.22s var(--ease), box-shadow 0.25s, border-color 0.25s;
}
.pcard:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: var(--teal-tint); }
.pcard.featured { border-color: var(--signal); box-shadow: 0 24px 50px -26px rgba(240,108,142,0.5); }
.pcard .shot { position: relative; aspect-ratio: 16 / 11; overflow: hidden; background: var(--board); }
.pcard .shot img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s var(--ease); }
.pcard:hover .shot img { transform: scale(1.05); }
.pcard .flag {
  position: absolute; top: 12px; left: 12px; font-family: var(--font-mono); font-size: 11px; font-weight: 600;
  letter-spacing: 0.06em; text-transform: uppercase; padding: 6px 11px; border-radius: 999px;
  background: var(--signal); color: var(--ink);
}
.pcard .lessons-tag {
  position: absolute; bottom: 12px; right: 12px; font-family: var(--font-mono); font-size: 12px;
  padding: 5px 10px; border-radius: 8px; background: rgba(20,18,17,0.7); color: #e9dcd6; backdrop-filter: blur(4px);
}
.pcard .body { padding: 22px; display: flex; flex-direction: column; gap: 12px; flex: 1; }
.pcard .tier { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--teal-deep); }
.pcard h3 { font-size: 1.32rem; }
.pcard .desc { color: var(--muted); font-size: 0.95rem; margin: -2px 0 0; }
.pcard ul { list-style: none; padding: 0; margin: 4px 0 0; display: grid; gap: 9px; }
.pcard ul li { font-size: 0.92rem; padding-left: 26px; position: relative; color: var(--ink-soft); }
.pcard ul li::before {
  content: ""; position: absolute; left: 0; top: 6px; width: 13px; height: 8px;
  border-left: 2px solid var(--teal); border-bottom: 2px solid var(--teal); transform: rotate(-45deg);
}
.pcard .price-row { display: flex; align-items: baseline; gap: 10px; margin-top: auto; padding-top: 8px; }
.pcard .price { font-family: var(--font-display); font-size: 2rem; font-weight: 600; letter-spacing: -0.03em; }
.pcard .old { color: var(--muted); text-decoration: line-through; font-size: 1rem; }
.pcard .save { font-family: var(--font-mono); font-size: 11px; color: var(--signal-deep); background: var(--signal-tint); padding: 3px 8px; border-radius: 6px; margin-left: auto; align-self: center; }
.pcard .foot { padding: 0 22px 22px; }

/* ---------- Kit contents ---------- */
.kit-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: clamp(24px, 5vw, 60px); align-items: center; }
.kit-photo { border-radius: var(--r-lg); overflow: hidden; box-shadow: var(--shadow); position: relative; }
.kit-photo img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 4 / 3; }
.kit-photo .stamp {
  position: absolute; bottom: 16px; left: 16px; font-family: var(--font-mono); font-size: 12px;
  color: var(--ink); background: var(--signal); padding: 7px 13px; border-radius: 8px; font-weight: 600;
}
.kit-list { display: grid; grid-template-columns: 1fr 1fr; gap: 2px; border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; }
.kit-item { padding: 18px 20px; background: var(--card); }
.kit-item .n { font-family: var(--font-mono); font-size: 12px; color: var(--teal-deep); }
.kit-item h4 { font-family: var(--font-display); font-size: 1.02rem; font-weight: 600; margin: 5px 0 3px; letter-spacing: -0.01em; }
.kit-item p { margin: 0; font-size: 0.85rem; color: var(--muted); }

/* ---------- How it works (routed flow) ---------- */
.flow { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; position: relative; }
.flow::before {
  content: ""; position: absolute; top: 34px; left: 12%; right: 12%; height: 2px;
  background: repeating-linear-gradient(90deg, var(--teal) 0 8px, transparent 8px 16px); opacity: 0.5; z-index: 0;
}
.fstep { position: relative; z-index: 1; text-align: center; padding: 0 8px; }
.fstep .node {
  width: 68px; height: 68px; margin: 0 auto 20px; border-radius: 20px; background: var(--card);
  border: 1.5px solid var(--line); display: grid; place-items: center; box-shadow: var(--shadow-sm);
  font-family: var(--font-display); font-weight: 700; font-size: 1.4rem; color: var(--teal-deep);
}
.fstep.active .node { background: var(--ink); color: var(--signal); border-color: var(--ink); }
.fstep h3 { font-size: 1.2rem; margin-bottom: 8px; }
.fstep p { margin: 0; color: var(--muted); font-size: 0.95rem; }
.fstep .code-line { font-family: var(--font-mono); font-size: 12px; color: var(--teal-deep); background: var(--teal-tint); display: inline-block; padding: 4px 10px; border-radius: 7px; margin-top: 10px; }

/* ---------- Academy preview band ---------- */
.apreview { background: var(--board); color: #faf5f0; border-radius: var(--r-lg); overflow: hidden; }
.apreview-grid { display: grid; grid-template-columns: 1fr 1fr; }
.apreview .left { padding: clamp(30px, 5vw, 56px); }
.apreview .left h2 { color: #fff; font-size: clamp(1.7rem, 3vw, 2.5rem); }
.apreview .left p { color: rgba(255,255,255,0.78); }
.apreview .mods { margin: 24px 0 0; display: grid; gap: 10px; }
.apreview .modrow { display: flex; align-items: center; gap: 12px; font-family: var(--font-mono); font-size: 13px; color: #e9dcd6; border: 1px solid var(--board-line); border-radius: 10px; padding: 12px 14px; }
.apreview .modrow .lock { margin-left: auto; opacity: 0.7; }
.apreview .right { position: relative; min-height: 320px; }
.apreview .right img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.apreview .right .veil { position: absolute; inset: 0; background: linear-gradient(90deg, var(--board), rgba(6,35,26,0.1)); }

/* ---------- Testimonials ---------- */
.tgrid { columns: 3; column-gap: 20px; }
.tcard { break-inside: avoid; background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: 22px; margin-bottom: 20px; }
.tcard .stars { color: var(--signal); letter-spacing: 2px; font-size: 14px; }
.tcard p { margin: 12px 0 16px; font-size: 0.98rem; color: var(--ink-soft); }
.tcard .who { display: flex; align-items: center; gap: 11px; }
.tcard .av { width: 38px; height: 38px; border-radius: 50%; background: var(--teal-tint); color: var(--teal-deep); display: grid; place-items: center; font-family: var(--font-display); font-weight: 700; }
.tcard .who b { font-size: 0.92rem; display: block; }
.tcard .who small { font-family: var(--font-mono); font-size: 11px; color: var(--muted); }

/* ---------- Story ---------- */
.story-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(24px, 5vw, 60px); align-items: center; }
.story-photo { border-radius: var(--r-lg); overflow: hidden; box-shadow: var(--shadow); }
.story-photo img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.story-stats { display: flex; gap: 30px; margin-top: 26px; }
.story-stats .num { font-family: var(--font-display); font-size: 2.1rem; font-weight: 600; letter-spacing: -0.02em; }
.story-stats .num .u { color: var(--teal-deep); }
.story-stats .lbl { font-size: 13px; color: var(--muted); }

/* ---------- FAQ ---------- */
.faq { max-width: 760px; margin: 0 auto; }
.qa { border-bottom: 1px solid var(--line); }
.qa summary { list-style: none; cursor: pointer; padding: 22px 44px 22px 4px; position: relative; font-family: var(--font-display); font-weight: 600; font-size: 1.1rem; letter-spacing: -0.01em; }
.qa summary::-webkit-details-marker { display: none; }
.qa summary::after { content: "+"; position: absolute; right: 8px; top: 18px; font-size: 24px; color: var(--teal-deep); font-weight: 400; transition: transform 0.2s; }
.qa[open] summary::after { transform: rotate(45deg); }
.qa .a { padding: 0 44px 22px 4px; color: var(--muted); margin: 0; }

/* ---------- CTA band ---------- */
.cta-band { position: relative; overflow: hidden; background: linear-gradient(150deg, var(--board-2), var(--board)); color: #fff; border-radius: var(--r-lg); padding: clamp(40px, 6vw, 72px); text-align: center; }
.cta-band h2 { color: #fff; font-size: clamp(1.9rem, 4vw, 3rem); margin-bottom: 14px; }
.cta-band p { color: rgba(255,255,255,0.8); max-width: 480px; margin: 0 auto 28px; }
.cta-band .btn-row { display: flex; gap: 13px; justify-content: center; flex-wrap: wrap; }

/* ---------- Footer ---------- */
.site-footer { background: var(--ink); color: #a7b8b0; padding: clamp(48px, 6vw, 72px) 0 32px; }
.foot-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 32px; }
.site-footer .logo { color: #fff; margin-bottom: 14px; }
.site-footer .logo small { color: #7d8f87; }
.site-footer p { font-size: 0.9rem; max-width: 280px; }
.foot-col h5 { font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.12em; text-transform: uppercase; color: #7d8f87; margin: 0 0 14px; font-weight: 500; }
.foot-col a { display: block; color: #c3d2cb; font-size: 0.94rem; padding: 5px 0; }
.foot-col a:hover { color: var(--signal); }
.foot-bottom { display: flex; justify-content: space-between; align-items: center; margin-top: 40px; padding-top: 24px; border-top: 1px solid rgba(255,255,255,0.08); flex-wrap: wrap; gap: 12px; }
.foot-bottom small { font-family: var(--font-mono); font-size: 12px; color: #7d8f87; }

/* ---------- Cart drawer ---------- */
.overlay { position: fixed; inset: 0; background: rgba(20,18,17,0.55); opacity: 0; pointer-events: none; transition: opacity 0.25s; z-index: 90; backdrop-filter: blur(2px); }
.overlay.open { opacity: 1; pointer-events: auto; }
.drawer { position: fixed; top: 0; right: 0; height: 100%; width: 440px; max-width: 92vw; background: var(--paper-2); z-index: 100; transform: translateX(100%); transition: transform 0.32s var(--ease); display: flex; flex-direction: column; box-shadow: var(--shadow-lg); }
.drawer.open { transform: none; }
.drawer > header { padding: 22px 24px; border-bottom: 1px solid var(--line); display: flex; align-items: center; justify-content: space-between; }
.drawer > header h3 { font-size: 1.25rem; }
.drawer .items { flex: 1; overflow-y: auto; padding: 14px 24px; }
.drawer .foot { padding: 22px 24px; border-top: 1px solid var(--line); background: var(--card); }
.cart-item { display: flex; gap: 13px; padding: 14px 0; border-bottom: 1px solid var(--line-soft); }
.cart-item img { width: 80px; height: 60px; object-fit: cover; border-radius: 10px; }
.cart-item h4 { margin: 0 0 4px; font-size: 0.95rem; font-family: var(--font-display); }
.cart-item .ci-price { color: var(--muted); font-size: 0.9rem; font-family: var(--font-mono); }
.qty { display: inline-flex; align-items: center; gap: 10px; margin-top: 8px; }
.qty button { width: 27px; height: 27px; border-radius: 8px; border: 1px solid var(--line); background: var(--card); cursor: pointer; font-weight: 600; font-size: 15px; }
.qty button:hover { border-color: var(--teal); color: var(--teal-deep); }
.qty span { font-family: var(--font-mono); min-width: 16px; text-align: center; }
.link-remove { background: none; border: none; color: #b03a2e; cursor: pointer; font-size: 12px; padding: 0; font-family: var(--font-mono); }
.close-x { background: none; border: none; font-size: 26px; cursor: pointer; color: var(--muted); line-height: 1; padding: 0 4px; }
.close-x:hover { color: var(--ink); }
.total-row { display: flex; justify-content: space-between; align-items: baseline; font-family: var(--font-display); font-size: 1.35rem; font-weight: 600; margin-bottom: 16px; }
.total-row .sm { font-size: 0.8rem; color: var(--muted); font-family: var(--font-mono); }
.empty-cart { text-align: center; color: var(--muted); padding: 56px 20px; }
.empty-cart .ic { font-size: 34px; margin-bottom: 10px; }
.field { margin-bottom: 13px; }
.field label { display: block; font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.06em; text-transform: uppercase; font-weight: 500; margin-bottom: 6px; color: var(--ink-soft); }
.field input { width: 100%; padding: 12px 14px; border: 1.5px solid var(--line); border-radius: 11px; font-size: 15px; font-family: var(--font-body); background: var(--card); transition: border-color 0.18s; }
.field input:focus { outline: none; border-color: var(--teal); box-shadow: 0 0 0 4px var(--teal-tint); }
.drawer .items h4.step-title { font-family: var(--font-display); font-size: 1.05rem; margin: 6px 0 16px; }

.code-box { background: linear-gradient(150deg, var(--board-2), var(--board)); color: #f3d9df; border-radius: 16px; padding: 26px; text-align: center; margin: 16px 0; position: relative; overflow: hidden; }
.code-box .lab { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.14em; opacity: 0.8; }
.code-box .code { font-family: var(--font-mono); font-size: 1.7rem; font-weight: 600; letter-spacing: 3px; color: #fff; margin: 10px 0; }
.code-box .lvl { font-size: 13px; opacity: 0.85; }
.code-box .lvl b { color: var(--signal); }
.notice { background: var(--teal-tint); border: 1px solid #bfe6d5; color: var(--teal-ink); padding: 13px 15px; border-radius: 11px; font-size: 0.9rem; }
.err { background: #fdecea; border: 1px solid #f3c9c3; color: #8f2318; padding: 13px 15px; border-radius: 11px; font-size: 0.9rem; margin-bottom: 12px; }

/* ---------- Reveal on scroll ---------- */
[data-reveal] { opacity: 0; transform: translateY(22px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
[data-reveal].is-visible { opacity: 1; transform: none; }
[data-reveal][data-delay="1"] { transition-delay: 0.08s; }
[data-reveal][data-delay="2"] { transition-delay: 0.16s; }
[data-reveal][data-delay="3"] { transition-delay: 0.24s; }

/* ---------- Responsive ---------- */
@media (max-width: 940px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-stage { max-width: 460px; margin: 0 auto; }
  .duality-grid { grid-template-columns: 1fr; }
  .duality-join { transform: rotate(90deg); padding: 4px 0; }
  .apreview-grid, .kit-grid, .story-grid { grid-template-columns: 1fr; }
  .apreview .right { min-height: 220px; }
  .tgrid { columns: 2; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 680px) {
  .nav-links { display: none; }
  .nav-toggle { display: block; }
  .nav-links.open { display: flex; position: absolute; top: 72px; left: 0; right: 0; flex-direction: column; background: var(--paper-2); padding: 16px 24px; border-bottom: 1px solid var(--line); gap: 6px; }
  .nav-cta-desktop { display: none; }
  .products { grid-template-columns: 1fr; }
  .flow { grid-template-columns: 1fr; gap: 30px; }
  .flow::before { display: none; }
  .kit-list { grid-template-columns: 1fr; }
  .tgrid { columns: 1; }
  .foot-grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
  [data-reveal] { opacity: 1; transform: none; }
}