/* =============================================================
   1. Tokens
   ============================================================= */
:root {
  --bg: #0f0d0c;
  --bg-raised: #171412;
  --bg-card: #1c1815;
  --border: #322b26;
  --text: #f1ece5;
  --text-dim: #a99f95;
  --text-faint: #756b62;
  --accent: #3b82f6;
  --accent-soft: #a855f7;
  --accent-contrast: #0b0f1f;
  --danger: #ff6b6b;
  --success: #7ad48b;

  --sans: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --display: "Space Grotesk", var(--sans);
  --mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --radius: 14px;
  --radius-sm: 8px;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #faf8f5;
    --bg-raised: #ffffff;
    --bg-card: #ffffff;
    --border: #e7e0d8;
    --text: #201b16;
    --text-dim: #6b5f54;
    --text-faint: #93867a;
    --accent: #2563eb;
    --accent-soft: #7c3aed;
    --accent-contrast: #ffffff;
  }
}

/* =============================================================
   2. Reset & base
   ============================================================= */
*, *::before, *::after { box-sizing: border-box; margin: 0; }
html { -webkit-text-size-adjust: 100%; tab-size: 2; overflow-x: clip; scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
  overscroll-behavior-y: none;
}
img, svg, video { 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 { font-family: var(--display); text-wrap: balance; line-height: 1.08; letter-spacing: -0.01em; }
::selection { background: var(--accent); color: var(--accent-contrast); }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

/* =============================================================
   3. Utilities
   ============================================================= */
.container { width: 100%; max-width: 980px; margin-inline: auto; padding-inline: 1.25rem; }
.visually-hidden {
  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;
  padding: .6rem 1rem; background: var(--accent); color: var(--accent-contrast);
  z-index: 9999; border-radius: var(--radius-sm); font-weight: 600;
  transition: top .2s var(--ease-out);
}
.skip-link:focus { top: 1rem; }

/* =============================================================
   4. Header / Footer
   ============================================================= */
.site-header { padding-block: 1.1rem; border-bottom: 1px solid var(--border); }
.header-row { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.logo { display: flex; align-items: center; gap: .55rem; font-family: var(--display); font-weight: 700; font-size: 1.15rem; }
.logo-mark { display: inline-flex; }
.header-tag { font-size: .82rem; color: var(--text-dim); font-family: var(--mono); }

.site-footer { border-top: 1px solid var(--border); margin-top: 3rem; padding-block: 1.5rem; color: var(--text-dim); font-size: .88rem; }
.footer-row { display: flex; flex-wrap: wrap; gap: .75rem 1.5rem; align-items: center; justify-content: space-between; }
.footer-links { display: flex; gap: 1.25rem; }
.footer-links a:hover { color: var(--text); }

/* =============================================================
   5. Hero
   ============================================================= */
.hero { padding-block: 2.25rem 1.5rem; text-align: center; }
.hero h1 { font-size: clamp(1.8rem, 4.4vw, 2.7rem); max-width: 22ch; margin-inline: auto; }
.hero-sub { margin-top: .85rem; color: var(--text-dim); font-size: 1.05rem; max-width: 46ch; margin-inline: auto; }

/* =============================================================
   6. Tool card
   ============================================================= */
.tool-section { padding-block: .5rem 2rem; }

.tool-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.4rem;
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}

.tool-controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: .9rem;
}
.control-group { display: flex; flex-direction: column; gap: .4rem; }
.control-group[hidden] { display: none; }
.control-label { font-size: .78rem; font-weight: 600; color: var(--text-dim); text-transform: uppercase; letter-spacing: .04em; }

.layout-toggle { display: flex; gap: .5rem; }
.layout-btn {
  flex: 1;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: .55rem .5rem;
  font-weight: 600;
  font-size: .92rem;
  text-align: center;
  transition: border-color .2s var(--ease-out), background .2s var(--ease-out), color .2s var(--ease-out);
}
.layout-btn small { display: block; font-weight: 500; font-size: .72rem; color: var(--text-faint); }
.layout-btn.is-active { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 14%, transparent); color: var(--text); }
.layout-btn.is-active small { color: var(--accent-soft); }
.layout-btn:hover { border-color: var(--accent); }

.control-select, .control-input {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: .55rem .65rem;
  color: var(--text);
  font-size: .92rem;
  font-family: var(--mono);
}
.control-range { accent-color: var(--accent); }

.slots-head { display: flex; align-items: center; justify-content: space-between; font-size: .88rem; color: var(--text-dim); }
.btn-link { color: var(--accent); font-weight: 600; font-size: .85rem; }
.btn-link:hover { text-decoration: underline; }

.slots-grid {
  display: grid;
  gap: .5rem;
  grid-template-columns: repeat(2, minmax(0, 130px));
  justify-content: center;
}
.slots-grid[data-cols="4"] { grid-template-columns: repeat(4, minmax(0, 130px)); }

.slot {
  position: relative;
  aspect-ratio: 1;
  border: 1.5px dashed var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-raised);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  transition: border-color .18s var(--ease-out), background .18s var(--ease-out);
}
.slot:hover, .slot.is-dragover { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 10%, var(--bg-raised)); }
.slot-plus { color: var(--text-faint); font-size: 1.6rem; font-weight: 300; pointer-events: none; }
.slot.has-image { border-style: solid; border-color: var(--border); }
.slot img { width: 100%; height: 100%; object-fit: cover; display: block; }
.slot-remove {
  position: absolute; top: 4px; right: 4px;
  width: 22px; height: 22px; border-radius: 50%;
  background: rgba(15,13,12,.75); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: .8rem; line-height: 1; opacity: 0;
  transition: opacity .15s var(--ease-out);
}
.slot.has-image:hover .slot-remove, .slot-remove:focus-visible { opacity: 1; }

.privacy-badge { font-size: .88rem; color: var(--text-dim); }
.limits-note { font-size: .82rem; color: var(--text-faint); margin-top: -.6rem; }

.preview-row { display: flex; gap: 1.25rem; align-items: flex-start; flex-wrap: wrap; }
.preview-frame {
  position: relative;
  flex: 1 1 260px;
  max-width: 320px;
  aspect-ratio: 1;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background:
    linear-gradient(45deg, var(--bg-raised) 25%, transparent 25%) -8px 0/16px 16px,
    linear-gradient(-45deg, var(--bg-raised) 25%, transparent 25%) -8px 0/16px 16px,
    linear-gradient(45deg, transparent 75%, var(--bg-raised) 75%) -8px 0/16px 16px,
    linear-gradient(-45deg, transparent 75%, var(--bg-raised) 75%) -8px 0/16px 16px,
    var(--bg);
  overflow: hidden;
}
#preview-canvas { width: 100%; height: 100%; display: block; object-fit: contain; }
.preview-empty {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  text-align: center; padding: 1rem; font-size: .85rem; color: var(--text-faint);
}
.tool-card[data-state="ready"] .preview-empty { display: none; }

.preview-actions { flex: 1 1 220px; display: flex; flex-direction: column; gap: .6rem; align-self: center; }
.btn-primary {
  background: var(--accent);
  color: var(--accent-contrast);
  font-weight: 700;
  font-size: 1rem;
  padding: .85rem 1.1rem;
  border-radius: var(--radius-sm);
  text-align: center;
  transition: transform .15s var(--ease-out), opacity .15s var(--ease-out);
}
.btn-primary:hover:not(:disabled) { transform: translateY(-1px); }
.btn-primary:disabled { opacity: .45; cursor: not-allowed; }
.error-msg { color: var(--danger); font-size: .85rem; }

.ad-slot {
  min-height: 90px;
  border: 1px dashed var(--border);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-faint); font-size: .78rem; letter-spacing: .04em; text-transform: uppercase;
  margin-top: 1.25rem;
}

/* =============================================================
   7. How it works
   ============================================================= */
.how { padding-block: 2rem; }
.how h2 { text-align: center; font-size: clamp(1.4rem, 3vw, 1.9rem); margin-bottom: 1.5rem; }
.how-steps { list-style: none; display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1.25rem; }
.how-steps li { border: 1px solid var(--border); border-radius: var(--radius); padding: 1.2rem; background: var(--bg-card); }
.how-steps svg { color: var(--accent); margin-bottom: .6rem; }
.how-steps h3 { font-size: 1.05rem; margin-bottom: .35rem; }
.how-steps p { color: var(--text-dim); font-size: .92rem; }

/* =============================================================
   8. SEO text / FAQ
   ============================================================= */
.seo { padding-block: 1.5rem; }
.seo h2 { font-size: clamp(1.3rem, 2.6vw, 1.7rem); margin-bottom: 1rem; }
.seo p { color: var(--text-dim); margin-bottom: 1rem; max-width: 72ch; }

.faq { padding-block: 2rem; }
.faq h2 { font-size: clamp(1.3rem, 2.6vw, 1.7rem); margin-bottom: 1.25rem; }
.faq-item { border-bottom: 1px solid var(--border); padding-block: .9rem; }
.faq-item summary { cursor: pointer; font-weight: 600; list-style: none; display: flex; justify-content: space-between; gap: 1rem; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; color: var(--accent); font-size: 1.2rem; flex-shrink: 0; }
.faq-item[open] summary::after { content: "\2212"; }
.faq-item p { margin-top: .6rem; color: var(--text-dim); font-size: .94rem; }

/* =============================================================
   9. Legal pages
   ============================================================= */
.legal { padding-block: 2rem; }
.legal h1 { font-size: 1.8rem; margin-bottom: 1rem; }
.legal h2 { font-size: 1.2rem; margin-top: 1.5rem; margin-bottom: .5rem; }
.legal p, .legal li { color: var(--text-dim); margin-bottom: .75rem; }

/* =============================================================
   10. Responsive
   ============================================================= */
@media (min-width: 540px) {
  .slot-plus { font-size: 1.8rem; }
}
@media (min-width: 720px) {
  .preview-row { flex-wrap: nowrap; }
}
@media (min-width: 960px) {
  .tool-card { padding: 1.8rem; }
}