/* ===== ColoringBuds Print Tools — design system ===== */
:root {
  --bg: #0d1117;
  --bg-elev: #161b22;
  --bg-elev-2: #1c2330;
  --border: #2a3340;
  --text: #e6edf3;
  --text-muted: #9aa7b4;
  --primary: #ff7a85;
  --primary-hover: #ff8f98;
  --primary-contrast: #ffffff;
  --accent: #36d399;
  --danger: #f87171;
  --warn: #fbbf24;
  --radius: 14px;
  --radius-sm: 9px;
  --shadow: 0 10px 30px rgba(0, 0, 0, .35);
  --maxw: 1080px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}
[data-theme="light"] {
  --bg: #f6f8fb;
  --bg-elev: #ffffff;
  --bg-elev-2: #eef2f7;
  --border: #dbe2ea;
  --text: #0f1722;
  --text-muted: #5a6677;
  --primary: #e05060;
  --primary-hover: #c94050;
  --shadow: 0 10px 30px rgba(20, 40, 80, .08);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
.container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: 18px; }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { line-height: 1.2; font-weight: 750; letter-spacing: -.02em; }
h1 { font-size: clamp(1.7rem, 4vw, 2.5rem); margin: 0 0 .4em; }
h2 { font-size: clamp(1.3rem, 2.6vw, 1.7rem); }
.muted { color: var(--text-muted); }
.small { font-size: .875rem; }
.lead { font-size: 1.075rem; color: var(--text-muted); }

.skip-link { position: absolute; left: -999px; top: 0; background: var(--primary); color: #fff; padding: 10px 16px; z-index: 100; border-radius: 0 0 8px 0; }
.skip-link:focus { left: 0; }

/* ===== Header ===== */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
}
.header-inner { display: flex; align-items: center; gap: 18px; height: 62px; }
.brand { display: inline-flex; align-items: center; gap: 9px; color: var(--text); font-weight: 700; }
.brand:hover { text-decoration: none; }
.brand-mark { font-size: 1.35rem; filter: drop-shadow(0 0 8px var(--primary)); }
.brand-text strong { color: var(--primary); }
.main-nav { display: none; gap: 20px; margin-left: 14px; }
.main-nav a { color: var(--text-muted); font-weight: 600; font-size: .95rem; }
.main-nav a:hover { color: var(--text); text-decoration: none; }
.header-tools { display: flex; align-items: center; gap: 8px; margin-left: auto; }
.theme-toggle {
  background: var(--bg-elev); border: 1px solid var(--border);
  color: var(--text); border-radius: 999px; width: 40px; height: 40px; cursor: pointer;
  display: grid; place-items: center; font-size: 1.05rem;
}
.theme-toggle:hover { border-color: var(--primary); }
[data-theme="dark"] .theme-icon-light { display: none; }
[data-theme="light"] .theme-icon-dark { display: none; }
@media (min-width: 760px) { .main-nav { display: flex; } }

/* ===== Hero / home ===== */
.hero { padding: 56px 0 26px; text-align: center; }
.hero p.lead { max-width: 620px; margin: 0 auto; }
.search-wrap { max-width: 520px; margin: 26px auto 0; }
.search-wrap input {
  width: 100%; padding: 14px 18px; font-size: 1rem; border-radius: 999px;
  border: 1px solid var(--border); background: var(--bg-elev); color: var(--text);
}
.search-wrap input:focus { outline: 2px solid var(--primary); border-color: var(--primary); }

/* ===== Category + cards ===== */
.section { padding: 30px 0; }
.section h2 { margin: 0 0 4px; }
.section-sub { color: var(--text-muted); margin: 0 0 18px; }
.card-grid { display: grid; grid-template-columns: 1fr; gap: 14px; }
@media (min-width: 560px) { .card-grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 880px) { .card-grid { grid-template-columns: 1fr 1fr 1fr; } }
.tool-card {
  display: flex; align-items: flex-start; gap: 14px; padding: 16px 18px;
  background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius);
  color: var(--text); transition: transform .12s ease, border-color .12s ease, box-shadow .12s ease;
}
.tool-card:hover { transform: translateY(-2px); border-color: var(--primary); box-shadow: var(--shadow); text-decoration: none; }
.tool-card:hover .tool-card-icon { border-color: var(--primary); }
.tool-card-icon {
  flex: 0 0 auto; display: inline-flex; align-items: center; justify-content: center;
  width: 42px; height: 42px; border-radius: 10px; color: var(--primary);
  background: color-mix(in srgb, var(--primary) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--primary) 24%, transparent);
  transition: border-color .12s ease;
}
.tool-card-body { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.tool-card-title { font-weight: 700; }
.tool-card-cat { font-size: .8rem; color: var(--text-muted); }

/* tool page header icon */
.tool-head h1 { display: flex; align-items: center; gap: 12px; }
.tool-head-icon {
  flex: 0 0 auto; display: inline-flex; align-items: center; justify-content: center;
  width: 48px; height: 48px; border-radius: 12px; color: var(--primary);
  background: color-mix(in srgb, var(--primary) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--primary) 24%, transparent);
}
.tool-head-icon svg { width: 28px; height: 28px; }
.cat-pill { display: inline-block; font-size: .78rem; font-weight: 700; color: var(--primary); background: color-mix(in srgb, var(--primary) 14%, transparent); padding: 3px 10px; border-radius: 999px; margin-bottom: 10px; }

/* ===== Tool page ===== */
.tool-page { padding: 26px 18px 60px; max-width: 760px; }
.breadcrumb { font-size: .85rem; color: var(--text-muted); margin-bottom: 16px; }
.breadcrumb a { color: var(--text-muted); }
.eyebrow { text-transform: uppercase; letter-spacing: .08em; font-size: .75rem; font-weight: 700; color: var(--primary); margin: 0 0 6px; }
.tool-head { margin-bottom: 24px; }

/* widget */
.tool-widget { background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow); }
.field { margin-bottom: 16px; }
.field > label { display: block; font-weight: 650; margin-bottom: 7px; font-size: .95rem; }
.field .hint { font-weight: 400; color: var(--text-muted); font-size: .85rem; }
.input, select, .tool-widget input[type="number"], .tool-widget input[type="text"] {
  width: 100%; padding: 12px 14px; font-size: 1rem; color: var(--text);
  background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius-sm);
}
.input:focus, select:focus, .tool-widget input:focus { outline: 2px solid var(--primary); border-color: var(--primary); }
.input-row { display: flex; gap: 10px; }
.input-row > * { flex: 1; }
.inline-unit { display: flex; gap: 8px; }
.inline-unit input { flex: 2; }
.inline-unit select { flex: 1; min-width: 96px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 520px) { .grid-2 { grid-template-columns: 1fr; } }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  background: var(--primary); color: var(--primary-contrast); border: 0; cursor: pointer;
  padding: 12px 20px; font-size: 1rem; font-weight: 700; border-radius: var(--radius-sm);
}
.btn:hover { background: var(--primary-hover); }
.btn-ghost { background: transparent; color: var(--primary); border: 1px solid var(--border); }
.btn-ghost:hover { background: color-mix(in srgb, var(--primary) 12%, transparent); border-color: var(--primary); color: var(--primary); }
.btn-row { display: flex; gap: 10px; flex-wrap: wrap; }

/* results */
.result { margin-top: 20px; border-top: 1px dashed var(--border); padding-top: 18px; }
.result-primary {
  background: linear-gradient(135deg, color-mix(in srgb, var(--primary) 18%, transparent), transparent);
  border: 1px solid color-mix(in srgb, var(--primary) 35%, var(--border));
  border-radius: var(--radius-sm); padding: 16px 18px; margin-bottom: 14px;
}
.result-primary .r-label { font-size: .8rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: .06em; }
.result-primary .r-value { font-size: clamp(1.8rem, 6vw, 2.6rem); font-weight: 800; font-variant-numeric: tabular-nums; color: var(--text); line-height: 1.1; }
.result-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 520px) { .result-grid { grid-template-columns: 1fr; } }
.stat { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 12px 14px; }
.stat .s-label { font-size: .78rem; color: var(--text-muted); }
.stat .s-value { font-size: 1.25rem; font-weight: 750; font-variant-numeric: tabular-nums; }
.meter { height: 10px; border-radius: 999px; background: var(--bg-elev-2); overflow: hidden; margin-top: 6px; }
.meter > i { display: block; height: 100%; background: linear-gradient(90deg, var(--primary), var(--accent)); }
.notice { color: var(--warn); font-size: .9rem; }
.pills { display: flex; flex-wrap: wrap; gap: 8px; }
.pill { background: var(--bg); border: 1px solid var(--border); border-radius: 999px; padding: 6px 12px; cursor: pointer; font-size: .85rem; color: var(--text); }
.pill[aria-pressed="true"], .pill.active { border-color: var(--primary); color: var(--primary); background: color-mix(in srgb, var(--primary) 12%, transparent); }

/* quality indicator */
.quality-good { color: var(--accent); font-weight: 700; }
.quality-ok { color: var(--warn); font-weight: 700; }
.quality-low { color: var(--danger); font-weight: 700; }

table.cost-table { width: 100%; border-collapse: collapse; margin-top: 8px; }
table.cost-table th, table.cost-table td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--border); font-variant-numeric: tabular-nums; }
table.cost-table td:last-child, table.cost-table th:last-child { text-align: right; }

/* ===== Result toolbar (copy / save image / clear) ===== */
.result-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.act-btn { padding: 9px 14px; font-size: .9rem; }
.act-btn .act-ic { font-size: 1rem; line-height: 1; }

/* ===== Client-only calculation history ===== */
.calc-history { margin-top: 18px; border-top: 1px dashed var(--border); padding-top: 14px; }
.calc-history-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 10px; }
.calc-history-head h3 { font-size: .78rem; text-transform: uppercase; letter-spacing: .07em; color: var(--text-muted); margin: 0; font-weight: 700; }
.hist-clear { background: none; border: 0; color: var(--text-muted); cursor: pointer; font-size: .8rem; text-decoration: underline; padding: 0; }
.hist-clear:hover { color: var(--danger); }
.hist-empty { color: var(--text-muted); font-size: .85rem; margin: 0; }
.hist-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.hist-item { display: flex; gap: 10px; align-items: flex-start; background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 10px 12px; }
.hist-main { flex: 1; min-width: 0; }
.hist-val { font-weight: 750; font-variant-numeric: tabular-nums; word-break: break-word; }
.hist-label { color: var(--text-muted); font-size: .85rem; }
.hist-meta { color: var(--text-muted); font-size: .75rem; margin-top: 3px; word-break: break-word; }
.hist-actions { display: flex; gap: 6px; flex-shrink: 0; }
.hist-actions button { background: none; border: 1px solid var(--border); border-radius: 7px; color: var(--text-muted); cursor: pointer; padding: 4px 9px; font-size: .75rem; }
.hist-actions button:hover { border-color: var(--primary); color: var(--primary); }

/* ===== Long-form tool content ===== */
.tool-content { margin-top: 44px; }
.tool-content h2 { margin: 0 0 12px; scroll-margin-top: 84px; }
.tool-content .tc-section { margin-bottom: 34px; }
.tool-content p { margin: 0 0 14px; }
.tool-content ul, .tool-content ol { margin: 0 0 16px; padding-left: 22px; }
.tool-content li { margin: 6px 0; }
.tool-content a { text-decoration: underline; text-underline-offset: 2px; }

/* Formula callout */
.formula {
  font-family: var(--mono); font-size: .98rem; background: var(--bg-elev-2);
  border: 1px solid var(--border); border-left: 3px solid var(--primary);
  border-radius: var(--radius-sm); padding: 12px 14px; margin: 0 0 14px; overflow-x: auto;
}

/* Numbered how-to steps */
ol.steps { counter-reset: step; list-style: none; padding-left: 0; }
ol.steps li { margin: 0 0 10px; padding-left: 6px; }

/* Responsive table wrapper */
.table-wrap { overflow-x: auto; margin: 0 0 16px; }

/* FAQ */
.faq { margin-top: 40px; }
.faq details { border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 0 16px; margin-bottom: 10px; background: var(--bg-elev); }
.faq summary { cursor: pointer; font-weight: 650; padding: 14px 0; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "＋"; float: right; color: var(--text-muted); }
.faq details[open] summary::after { content: "－"; }
.faq .faq-a { padding-bottom: 14px; color: var(--text-muted); }
.related { margin-top: 44px; }

/* ===== Language switcher ===== */
.lang-switcher { display: flex; gap: 4px; align-items: center; }
.lang-link {
  font-size: .8rem; font-weight: 600; padding: 4px 8px;
  border-radius: 6px; color: var(--text-muted);
  border: 1px solid transparent; transition: all .12s ease;
}
.lang-link:hover { color: var(--text); text-decoration: none; border-color: var(--border); }
.lang-link.active { color: var(--primary); background: color-mix(in srgb, var(--primary) 12%, transparent); border-color: var(--primary); }
@media (max-width: 560px) { .lang-switcher { display: none; } }

/* ===== Footer ===== */
.site-footer { border-top: 1px solid var(--border); margin-top: 50px; padding: 36px 0 28px; background: var(--bg-elev); }
.footer-grid { display: grid; grid-template-columns: 1fr; gap: 24px; }
@media (min-width: 640px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 860px) { .footer-grid { grid-template-columns: 2fr 1fr 1fr; } }
.footer-h { font-size: .95rem; margin: 0 0 10px; }
.site-footer nav a { display: block; color: var(--text-muted); padding: 3px 0; }
.copyright { margin-top: 26px; font-size: .85rem; }

/* ===== Content / legal pages ===== */
.page-prose h2 { margin: 30px 0 10px; }
.page-prose p { margin: 0 0 14px; }
.page-prose ul { margin: 0 0 16px; padding-left: 22px; }
.page-prose li { margin: 4px 0; }
.page-prose .btn { margin-bottom: 8px; }

/* ===== Cookie / ads consent banner ===== */
.consent[hidden] { display: none; }
.consent {
  position: fixed; left: 12px; right: 12px; bottom: 12px; z-index: 80;
  max-width: var(--maxw); margin-inline: auto;
  display: flex; flex-wrap: wrap; align-items: center; gap: 12px 18px;
  background: var(--bg-elev); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow); padding: 16px 18px;
}
.consent-msg { margin: 0; flex: 1; min-width: 240px; font-size: .9rem; color: var(--text-muted); }
.consent-msg a { color: var(--primary); }
.consent-actions { display: flex; gap: 10px; flex-shrink: 0; }
.consent-actions .btn { padding: 10px 18px; font-size: .9rem; }
@media (max-width: 520px) { .consent-actions { width: 100%; } .consent-actions .btn { flex: 1; } }

/* utilities */
.hidden { display: none !important; }
:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }


/* Mobile: wide content tables scroll within their box instead of the page */
@media (max-width: 600px) {
  .tool-content table { display: block; max-width: 100%; overflow-x: auto; }
}