/* ═══════════════════════════════════════════════════════════
   SB Link Tools — shared stylesheet
   Light theme (default) + dark mode via [data-theme="dark"].
   One accent: blue. Mobile-first, fast, no web fonts.
   ═══════════════════════════════════════════════════════════ */

:root {
  --bg: #ffffff;
  --bg-soft: #f5f7fa;
  --card: #ffffff;
  --border: #e2e8f0;
  --border-strong: #cbd5e1;
  --text: #1a1d21;
  --text-soft: #3f4853;
  --muted: #5f6b7a;
  --accent: #2563eb;          /* primary blue */
  --accent-hover: #1d4ed8;
  --accent-soft: #eaf1ff;
  --on-accent: #ffffff;
  --gold: #e0b24c;            /* rare secondary */
  --good: #16a34a;
  --bad: #dc2626;
  --shadow: 0 1px 3px rgba(16, 24, 40, 0.08), 0 1px 2px rgba(16, 24, 40, 0.04);
  --shadow-lg: 0 8px 24px rgba(16, 24, 40, 0.10);
  --radius: 12px;
  --radius-sm: 8px;
}

[data-theme="dark"] {
  --bg: #0b0f14;
  --bg-soft: #111722;
  --card: #141b28;
  --border: #1f2a3d;
  --border-strong: #2c3a52;
  --text: #e8eef7;
  --text-soft: #c7d2e2;
  --muted: #8b9cb4;
  --accent: #4d8dff;
  --accent-hover: #6ba0ff;
  --accent-soft: rgba(77, 141, 255, 0.14);
  --on-accent: #0b0f14;
  --gold: #e0b24c;
  --good: #34d399;
  --bad: #f87171;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 { line-height: 1.25; color: var(--text); margin: 0 0 10px; letter-spacing: -0.2px; }
p { margin: 0 0 14px; color: var(--text-soft); }
img { max-width: 100%; }
.tabular { font-variant-numeric: tabular-nums; }

/* ── Header ── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  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-inner {
  max-width: 1140px;
  margin: 0 auto;
  padding: 10px 20px;
  display: flex;
  align-items: center;
  gap: 14px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--text);
  font-weight: 700;
  font-size: 17px;
  white-space: nowrap;
}
.brand:hover { text-decoration: none; }
.brand-logo { height: 28px; width: auto; }
.brand em { color: var(--accent); font-style: normal; }
.header-nav {
  display: flex;
  gap: 4px;
  margin-left: auto;
  align-items: center;
  flex-wrap: wrap;
}
.header-nav a {
  color: var(--muted);
  font-size: 14px;
  font-weight: 500;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
}
.header-nav a:hover { color: var(--text); background: var(--bg-soft); text-decoration: none; }
.header-nav a.active { color: var(--accent); background: var(--accent-soft); }

/* Theme toggle */
.theme-toggle {
  border: 1px solid var(--border);
  background: var(--bg-soft);
  color: var(--text-soft);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  font-size: 13px;
  cursor: pointer;
  white-space: nowrap;
}
.theme-toggle:hover { border-color: var(--border-strong); }

/* ── Layout ── */
.container { max-width: 1140px; margin: 0 auto; padding: 0 20px; }
.section { padding: 44px 0; }
.section h2 { font-size: 24px; margin-bottom: 6px; }
.section .sub { color: var(--muted); margin-bottom: 22px; }

/* ── Hero + search ── */
.hero { text-align: center; padding: 56px 20px 40px; }
.hero h1 { font-size: 40px; margin-bottom: 12px; }
.hero .lede { color: var(--muted); font-size: 18px; max-width: 640px; margin: 0 auto 26px; }
.search-wrap { max-width: 620px; margin: 0 auto; position: relative; }
.search-wrap input {
  width: 100%;
  padding: 15px 18px;
  font-size: 16px;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  background: var(--card);
  color: var(--text);
  box-shadow: var(--shadow);
}
.search-wrap input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.search-wrap .search-icon {
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
  pointer-events: none;
}
.search-results {
  max-width: 620px;
  margin: 8px auto 0;
  text-align: left;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  display: none;
}
.search-results.show { display: block; }
.search-results a {
  display: block;
  padding: 11px 16px;
  color: var(--text);
  border-bottom: 1px solid var(--border);
}
.search-results a:last-child { border-bottom: none; }
.search-results a:hover { background: var(--accent-soft); text-decoration: none; }
.search-results a .cat { color: var(--muted); font-size: 12px; }

/* ── Category cards ── */
.cat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 16px;
}
.cat-card {
  display: block;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 20px;
  color: var(--text);
  transition: border-color .15s, transform .1s, box-shadow .15s;
}
.cat-card:hover { border-color: var(--accent); transform: translateY(-2px); box-shadow: var(--shadow-lg); text-decoration: none; }
.cat-card h3 { font-size: 17px; margin-bottom: 4px; color: var(--text); }
.cat-card .cat-desc { color: var(--muted); font-size: 13.5px; margin: 0; }
.cat-card .cat-count { color: var(--accent); font-size: 12.5px; font-weight: 600; }

/* ── Tool cards (homepage lists) ── */
.tool-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 12px; }
.tool-card {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 13px 15px;
  color: var(--text);
  font-weight: 500;
  font-size: 14.5px;
  transition: border-color .15s;
}
.tool-card:hover { border-color: var(--accent); text-decoration: none; }
.tool-card .tick { color: var(--accent); font-size: 15px; }
.tool-card .tool-sub { color: var(--muted); font-weight: 400; font-size: 12.5px; display: block; }

/* ── Tool page ── */
.tool-page { max-width: 860px; margin: 0 auto; padding: 30px 20px 50px; }
.breadcrumb { font-size: 13px; color: var(--muted); margin-bottom: 14px; }
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--accent); }
.tool-page h1 { font-size: 32px; margin-bottom: 6px; }
.tool-page .lede { color: var(--muted); font-size: 16px; margin-bottom: 22px; }

.tool-panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
  margin-bottom: 24px;
}
.tool-panel label { display: block; font-size: 14px; font-weight: 600; margin: 0 0 6px; color: var(--text); }
.tool-panel textarea, .tool-panel input[type="text"], .tool-panel input[type="number"], .tool-panel select {
  width: 100%;
  padding: 11px 13px;
  font-size: 15px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--text);
  font-family: inherit;
}
.tool-panel textarea:focus, .tool-panel input:focus, .tool-panel select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.tool-panel .field { margin-bottom: 16px; }
.tool-panel .field-row { display: flex; gap: 14px; flex-wrap: wrap; }
.tool-panel .field-row .field { flex: 1 1 180px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background .15s, border-color .15s, transform .05s;
  font-family: inherit;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--accent); color: var(--on-accent); }
.btn-primary:hover { background: var(--accent-hover); }
.btn-ghost { background: transparent; border-color: var(--border-strong); color: var(--text); }
.btn-ghost:hover { border-color: var(--muted); }
.btn-sm { padding: 8px 14px; font-size: 13.5px; }
.btn-block { width: 100%; }

.result {
  margin-top: 16px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  font-family: "Cascadia Code", Consolas, "SF Mono", monospace;
  font-size: 13.5px;
  white-space: pre-wrap;
  word-break: break-word;
  min-height: 20px;
  color: var(--text);
}
.result:empty { display: none; }
.result-row { display: flex; justify-content: space-between; padding: 8px 0; border-bottom: 1px dashed var(--border); }
.result-row:last-child { border-bottom: none; }
.result-row .k { color: var(--muted); }
.result-row .v { font-weight: 600; font-variant-numeric: tabular-nums; }

.range-row { display: flex; align-items: center; gap: 12px; }
.range-row input[type="range"] { flex: 1; }

/* ── Ad slot placeholder (empty until AdSense approved) ── */
.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(--muted);
  font-size: 12px;
  letter-spacing: .3px;
  text-transform: uppercase;
  margin: 24px 0;
  background: var(--bg-soft);
}

/* ── Content / prose ── */
.content h2 { font-size: 21px; margin-top: 28px; }
.content h3 { font-size: 17px; margin-top: 20px; }
.content ul, .content ol { padding-left: 22px; color: var(--text-soft); }
.content li { margin-bottom: 6px; }
.content table { width: 100%; border-collapse: collapse; margin: 16px 0; font-size: 14px; }
.content th, .content td { padding: 9px 12px; border: 1px solid var(--border); text-align: left; }
.content th { background: var(--bg-soft); font-weight: 600; }

/* ── FAQ ── */
.faq-item { border: 1px solid var(--border); border-radius: var(--radius-sm); margin-bottom: 10px; overflow: hidden; }
.faq-q {
  width: 100%;
  text-align: left;
  background: var(--card);
  border: none;
  padding: 14px 18px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: inherit;
}
.faq-q .chev { color: var(--accent); transition: transform .2s; }
.faq-item.open .chev { transform: rotate(180deg); }
.faq-a { display: none; padding: 0 18px 14px; color: var(--text-soft); font-size: 14.5px; }
.faq-item.open .faq-a { display: block; }

/* ── Related tools ── */
.related-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 10px; }
.related-grid a {
  display: block;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
}
.related-grid a:hover { border-color: var(--accent); text-decoration: none; background: var(--accent-soft); }

/* ── Footer ── */
.site-footer {
  border-top: 1px solid var(--border);
  background: var(--bg-soft);
  margin-top: 40px;
}
.footer-inner { max-width: 1140px; margin: 0 auto; padding: 36px 20px 24px; }
.footer-cols { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 26px; margin-bottom: 24px; }
.footer-cols h4 { font-size: 14px; margin-bottom: 10px; color: var(--text); }
.footer-cols ul { list-style: none; padding: 0; margin: 0; }
.footer-cols li { margin-bottom: 7px; }
.footer-cols a { color: var(--muted); font-size: 14px; }
.footer-cols a:hover { color: var(--accent); text-decoration: none; }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 18px;
  text-align: center;
  color: var(--muted);
  font-size: 13px;
}

/* ── Cookie / consent banner ── */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: var(--card);
  border-top: 1px solid var(--border);
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.12);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.cookie-banner.hidden { display: none; }
.cookie-banner p { margin: 0; flex: 1 1 260px; font-size: 13.5px; color: var(--text-soft); }
.cookie-banner .cookie-actions { display: flex; gap: 10px; }

/* ── Responsive ── */
@media (max-width: 640px) {
  .hero h1 { font-size: 30px; }
  .tool-page h1 { font-size: 26px; }
  .header-nav { display: none; }   /* compact: nav lives in footer on mobile */
  .header-nav.mobile-open { display: flex; flex-direction: column; position: absolute; top: 100%; left: 0; right: 0; background: var(--card); border-bottom: 1px solid var(--border); padding: 10px 20px; }
  .tool-panel { padding: 18px; }
  .tool-panel .field-row { flex-direction: column; gap: 0; }
}

/* Menu button (mobile) */
.menu-btn { display: none; border: 1px solid var(--border); background: var(--bg-soft); border-radius: var(--radius-sm); padding: 6px 10px; cursor: pointer; color: var(--text); }
@media (max-width: 640px) { .menu-btn { display: inline-flex; } }