/* =============================================================
   1. Tokens
   ============================================================= */
:root {
  --bg: #faf9f6;
  --surface: #ffffff;
  --surface-2: #f2f1ec;
  --ink: #1b1b22;
  --ink-soft: #4a4a55;
  --muted: #7a7a86;
  --border: #e4e2da;
  --accent: #d0611f;
  --accent-ink: #ffffff;
  --ok: #1f7a4d;
  --warn: #a6650a;
  --bad: #c23b3b;
  --sans: "Manrope", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
  --radius: 14px;
  --radius-sm: 8px;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --shadow: 0 1px 2px rgba(20,18,10,.04), 0 8px 24px rgba(20,18,10,.06);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16151a;
    --surface: #1e1d24;
    --surface-2: #26252d;
    --ink: #f2f1ec;
    --ink-soft: #cfcdd6;
    --muted: #9391a0;
    --border: #34333d;
    --accent: #e88a4c;
    --accent-ink: #1b1408;
    --shadow: 0 1px 2px rgba(0,0,0,.3), 0 8px 24px rgba(0,0,0,.35);
  }
}

/* =============================================================
   2. Reset & base
   ============================================================= */
*, *::before, *::after { box-sizing: border-box; margin: 0; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; tab-size: 2; scroll-behavior: smooth; overflow-x: clip; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
  overscroll-behavior-y: none;
}
img, svg, video, canvas { display: block; max-width: 100%; }
button { font: inherit; color: inherit; cursor: pointer; border: 0; background: none; }
a { color: inherit; text-decoration: none; }
p { text-wrap: pretty; }
h1, h2, h3 { text-wrap: balance; line-height: 1.1; letter-spacing: -0.01em; font-weight: 800; }
ul, ol { list-style: none; padding: 0; }
input { font: inherit; color: inherit; }
::selection { background: var(--accent); color: var(--accent-ink); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.skip-link {
  position: fixed; top: -100px; left: 1rem; z-index: 9999;
  padding: .6rem 1rem; background: var(--ink); color: var(--bg);
  border-radius: var(--radius-sm); font-weight: 600;
  transition: top .25s var(--ease-out);
}
.skip-link:focus { top: 1rem; }

.container { width: 100%; max-width: 1080px; margin-inline: auto; padding-inline: 1.25rem; }

/* =============================================================
   3. Header / nav
   ============================================================= */
.site-header {
  position: sticky; top: 0; z-index: 40;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.header-row { display: flex; align-items: center; justify-content: space-between; height: 62px; }
.brand { display: flex; align-items: center; gap: .5rem; font-weight: 800; font-size: 1.05rem; }
.brand-mark {
  display: inline-grid; place-items: center; width: 28px; height: 28px;
  background: var(--ink); color: var(--bg); border-radius: 7px; font-size: .95rem;
}
.site-nav { display: none; gap: 1.6rem; font-weight: 600; font-size: .92rem; }
.site-nav a { color: var(--ink-soft); transition: color .2s var(--ease-out); }
.site-nav a:hover { color: var(--ink); }
.nav-toggle { display: grid; place-items: center; width: 36px; height: 36px; font-size: 1.2rem; }
@media (min-width: 720px) {
  .nav-toggle { display: none; }
  .site-nav { display: flex; }
}
.site-nav.is-open { display: flex; }
@media (max-width: 719px) {
  .site-nav { position: absolute; top: 62px; left: 0; right: 0; flex-direction: column;
    background: var(--surface); border-bottom: 1px solid var(--border); padding: 1rem 1.25rem; gap: .9rem; }
}

/* =============================================================
   4. Hero
   ============================================================= */
.hero { padding-block: 2.2rem 1.2rem; text-align: center; }
.hero h1 { font-size: clamp(1.7rem, 4.4vw, 2.6rem); max-width: 22ch; margin-inline: auto; }
.hero-sub { margin-top: .8rem; color: var(--ink-soft); max-width: 56ch; margin-inline: auto; font-size: 1.02rem; }

/* =============================================================
   5. Tool card
   ============================================================= */
.tool-section { padding-block: 0.6rem 1.6rem; }
.tool-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 1.25rem;
}
@media (min-width: 720px) { .tool-card { padding: 1.75rem; } }

.tool-block { padding-block: 1.1rem; border-bottom: 1px solid var(--border); }
.tool-block:last-child { border-bottom: 0; padding-bottom: .2rem; }
.tool-block-title { display: flex; align-items: center; gap: .6rem; font-size: 1.05rem; margin-bottom: .9rem; }
.step-num {
  display: inline-grid; place-items: center; width: 24px; height: 24px; border-radius: 50%;
  background: var(--accent); color: var(--accent-ink); font-size: .8rem; font-weight: 800; flex: none;
}

.segmented { display: inline-flex; background: var(--surface-2); border-radius: 999px; padding: 3px; margin-bottom: .9rem; }
.segmented-btn { padding: .5rem 1rem; border-radius: 999px; font-weight: 600; font-size: .88rem; color: var(--muted); transition: all .2s var(--ease-out); }
.segmented-btn.is-active { background: var(--surface); color: var(--ink); box-shadow: var(--shadow); }

.field-group { margin-top: .4rem; }
.field-row { display: grid; gap: .8rem; margin-top: .7rem; }
@media (min-width: 540px) { .field-row { grid-template-columns: 1fr 1fr; } }
.field-label { display: block; font-size: .82rem; font-weight: 600; color: var(--ink-soft); margin-bottom: .35rem; }
.field-input {
  width: 100%; padding: .68rem .85rem; border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: var(--bg); color: var(--ink); font-size: .95rem; transition: border-color .2s var(--ease-out);
}
.field-input:focus { border-color: var(--accent); }

.design-grid { display: grid; gap: 1.4rem; margin-top: .3rem; }
@media (min-width: 860px) { .design-grid { grid-template-columns: 1fr 320px; align-items: start; } }

.style-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: .5rem; margin-top: .4rem; }
@media (min-width: 480px) { .style-grid { grid-template-columns: repeat(4, 1fr); } }
.style-btn {
  padding: .6rem .4rem; border: 1px solid var(--border); border-radius: var(--radius-sm);
  font-size: .85rem; font-weight: 600; text-align: center; transition: all .2s var(--ease-out);
}
.style-btn:hover { border-color: var(--accent); }
.style-btn.is-active { background: var(--ink); color: var(--bg); border-color: var(--ink); }

.color-row { display: flex; gap: 1.2rem; margin: 1rem 0 1.1rem; flex-wrap: wrap; }
.color-field { display: flex; align-items: center; gap: .55rem; font-size: .85rem; font-weight: 600; color: var(--ink-soft); }
.color-field input[type="color"] {
  width: 38px; height: 38px; border: 1px solid var(--border); border-radius: 8px; padding: 2px; background: var(--surface);
}

.emoji-grid { display: grid; grid-template-columns: repeat(8, 1fr); gap: .35rem; margin-top: .4rem; }
.emoji-btn {
  aspect-ratio: 1; display: grid; place-items: center; font-size: 1.15rem;
  border: 1px solid var(--border); border-radius: var(--radius-sm); transition: all .2s var(--ease-out);
}
.emoji-btn:hover { border-color: var(--accent); }
.emoji-btn.is-active { background: var(--accent); border-color: var(--accent); }
.center-row { grid-template-columns: 1fr; margin-top: .6rem; }
@media (min-width: 480px) { .center-row { grid-template-columns: 1fr auto auto; align-items: center; } }
.upload-btn {
  display: inline-flex; align-items: center; justify-content: center; padding: .62rem 1rem;
  border: 1px solid var(--border); border-radius: var(--radius-sm); font-size: .88rem; font-weight: 600;
  white-space: nowrap; cursor: pointer; transition: border-color .2s var(--ease-out);
}
.upload-btn:hover { border-color: var(--accent); }
.text-btn { font-size: .85rem; font-weight: 600; color: var(--muted); text-decoration: underline; text-underline-offset: 3px; white-space: nowrap; }

.preview-col { display: flex; flex-direction: column; align-items: center; gap: .9rem; }
.qr-preview {
  width: 100%; max-width: 280px; aspect-ratio: 1; border-radius: var(--radius-sm);
  overflow: hidden; border: 1px solid var(--border); background: #fff; display: grid; place-items: center;
}
.qr-preview canvas, .qr-preview svg { width: 100%; height: 100%; }
.download-row { display: flex; gap: .6rem; flex-wrap: wrap; justify-content: center; width: 100%; }
.download-row-3d { justify-content: flex-start; margin-top: 1.1rem; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  padding: .78rem 1.3rem; border-radius: 999px; font-weight: 700; font-size: .92rem;
  transition: transform .18s var(--ease-out), box-shadow .18s var(--ease-out), opacity .18s var(--ease-out);
}
.btn:active { transform: scale(.98); }
.btn-primary { background: var(--accent); color: var(--accent-ink); box-shadow: 0 6px 18px color-mix(in srgb, var(--accent) 40%, transparent); }
.btn-primary:hover { opacity: .92; }
.btn-secondary { background: var(--surface-2); color: var(--ink); }
.btn-secondary:hover { background: var(--border); }
.btn-ghost { background: transparent; border: 1px solid var(--border); color: var(--ink-soft); }
.btn-ghost:hover { border-color: var(--accent); color: var(--ink); }

.privacy-badge { font-size: .82rem; color: var(--muted); text-align: center; max-width: 34ch; }

.format-grid { display: grid; gap: .7rem; margin-top: .5rem; margin-bottom: 1.2rem; }
@media (min-width: 720px) { .format-grid { grid-template-columns: repeat(3, 1fr); } }
.format-card {
  text-align: left; padding: 1rem; border: 1px solid var(--border); border-radius: var(--radius-sm);
  display: flex; flex-direction: column; gap: .3rem; transition: all .2s var(--ease-out);
}
.format-card strong { font-size: .98rem; }
.format-card span { font-size: .83rem; color: var(--muted); line-height: 1.45; }
.format-card:hover { border-color: var(--accent); }
.format-card.is-active { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 8%, var(--surface)); }

input[type="range"] { width: 100%; accent-color: var(--accent); margin: .5rem 0 1rem; }

.warnings-list { display: flex; flex-direction: column; gap: .45rem; margin-top: 1rem; }
.warn-item { font-size: .84rem; padding: .55rem .75rem; border-radius: var(--radius-sm); border: 1px solid var(--border); }
.warn-item.warn-ok { color: var(--ok); border-color: color-mix(in srgb, var(--ok) 35%, var(--border)); }
.warn-item.warn-warn { color: var(--warn); border-color: color-mix(in srgb, var(--warn) 35%, var(--border)); }
.warn-item.warn-bad { color: var(--bad); border-color: color-mix(in srgb, var(--bad) 35%, var(--border)); }
.plate-info { margin-top: .6rem; font-size: .82rem; color: var(--muted); font-family: var(--mono); }

.viewer-col { display: flex; flex-direction: column; gap: .6rem; }
.viewer-box {
  position: relative; width: 100%; aspect-ratio: 1; border-radius: var(--radius-sm);
  border: 1px solid var(--border); background: radial-gradient(circle at 50% 30%, color-mix(in srgb, var(--surface-2) 70%, transparent), var(--surface-2));
  overflow: hidden;
}
.viewer-box canvas { width: 100%; height: 100%; touch-action: none; }
.viewer-status {
  position: absolute; inset: 0; display: grid; place-items: center; text-align: center; padding: 1rem;
  font-size: .85rem; color: var(--muted); pointer-events: none;
}
.viewer-hint { font-size: .78rem; color: var(--muted); text-align: center; }
.limits-note { margin-top: .9rem; font-size: .8rem; color: var(--muted); }

/* =============================================================
   6. Ad slots
   ============================================================= */
.ad-slot {
  display: grid; place-items: center; min-height: 90px; border: 1px dashed var(--border);
  border-radius: var(--radius-sm); color: var(--muted); font-weight: 700; font-size: .78rem;
  letter-spacing: .08em; background: color-mix(in srgb, var(--surface-2) 60%, transparent);
}
.ad-slot-banner { margin-top: 1.2rem; }
.ad-slot-content { margin-block: 2rem; min-height: 120px; }
.ad-slot-dialog { min-height: 140px; margin-block: .8rem; }

.ad-toast {
  position: fixed; right: 1rem; bottom: 1rem; z-index: 60;
  display: flex; align-items: center; gap: .6rem; padding: .7rem 2.1rem .7rem 1rem;
  background: var(--surface); border: 1px dashed var(--border); border-radius: var(--radius-sm);
  box-shadow: var(--shadow); font-size: .72rem; font-weight: 700; letter-spacing: .08em; color: var(--muted);
  opacity: 0; transform: translateY(12px); pointer-events: none; transition: opacity .3s var(--ease-out), transform .3s var(--ease-out);
}
.ad-toast.is-visible { opacity: 1; transform: translateY(0); pointer-events: auto; }
.ad-toast-close {
  position: absolute; top: 4px; right: 4px; width: 20px; height: 20px; display: grid; place-items: center;
  font-size: .95rem; color: var(--muted); border-radius: 50%;
}
.ad-toast-close:hover { background: var(--surface-2); }

.ad-dialog {
  border: 1px solid var(--border); border-radius: var(--radius); padding: 1.3rem; max-width: 380px; width: calc(100% - 2rem);
  background: var(--surface); color: var(--ink); box-shadow: var(--shadow);
}
.ad-dialog::backdrop { background: rgba(10,9,6,.5); backdrop-filter: blur(2px); }
.ad-dialog-label { font-size: .72rem; font-weight: 800; letter-spacing: .1em; color: var(--muted); margin-bottom: .6rem; }
.ad-dialog-close { position: absolute; top: 10px; right: 12px; font-size: 1.2rem; color: var(--muted); width: 28px; height: 28px; }
.ad-dialog-close:hover { color: var(--ink); }
.ad-dialog .btn { width: 100%; margin-top: 1rem; }

/* =============================================================
   7. Content sections
   ============================================================= */
.section { padding-block: 2.4rem; }
.section h2 { font-size: clamp(1.35rem, 3vw, 1.7rem); margin-bottom: 1.3rem; }

.steps-grid { display: grid; gap: 1.2rem; }
@media (min-width: 720px) { .steps-grid { grid-template-columns: repeat(3, 1fr); } }
.steps-grid li { padding: 1.2rem; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); }
.step-icon { font-size: 1.6rem; display: block; margin-bottom: .6rem; }
.steps-grid h3 { font-size: 1.02rem; margin-bottom: .4rem; }
.steps-grid p { font-size: .88rem; color: var(--ink-soft); }

.ideas-grid { display: grid; gap: 1rem; grid-template-columns: 1fr; }
@media (min-width: 620px) { .ideas-grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 960px) { .ideas-grid { grid-template-columns: repeat(3, 1fr); } }
.idea-card { padding: 1.1rem; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); }
.idea-card span { font-size: 1.5rem; display: block; margin-bottom: .5rem; }
.idea-card h3 { font-size: .98rem; margin-bottom: .35rem; }
.idea-card p { font-size: .86rem; color: var(--ink-soft); }

.faq-list { display: flex; flex-direction: column; gap: .6rem; max-width: 74ch; }
.faq-list details {
  border: 1px solid var(--border); border-radius: var(--radius-sm); padding: .9rem 1.05rem; background: var(--surface);
}
.faq-list summary { font-weight: 700; cursor: pointer; font-size: .96rem; }
.faq-list p { margin-top: .6rem; font-size: .89rem; color: var(--ink-soft); }

/* =============================================================
   8. Footer
   ============================================================= */
.site-footer { border-top: 1px solid var(--border); padding-block: 1.6rem; margin-top: 1rem; }
.footer-row { display: flex; flex-direction: column; gap: .6rem; align-items: center; text-align: center; font-size: .82rem; color: var(--muted); }
@media (min-width: 620px) { .footer-row { flex-direction: row; justify-content: space-between; text-align: left; } }
.footer-nav { display: flex; gap: 1rem; }
.footer-nav a { color: var(--muted); }
.footer-nav a:hover { color: var(--ink); }

/* =============================================================
   9. Reduced motion — only the truly intrusive bits
   ============================================================= */
@media (prefers-reduced-motion: reduce) {
  .ad-toast { transition: opacity .01s linear; }
}