/* QuickToolsBox — shared stylesheet for public pages, tools, and admin. */

:root {
  --bg: #ffffff;
  --surface: #f8fafc;
  --card: #ffffff;
  --text: #0f172a;
  --body: #334155;
  --muted: #64748b;
  --border: #e2e8f0;
  --input-border: #cbd5e1;
  --blue: #2563eb;
  --blue-dark: #1d4ed8;
  --link: #2563eb;
  --blue-soft: #eff6ff;
  --blue-border: #93c5fd;
  --danger: #b91c1c;
  --danger-soft: #fef2f2;
  --danger-border: #fecaca;
  --success: #047857;
  --success-soft: #ecfdf5;
  --success-border: #a7f3d0;
  --warn: #b45309;
  --warn-soft: #fffbeb;
  --mark: #fde68a;
  --code-inline: #be123c;
  --code-inline-bg: #f1f5f9;
  --header-bg: rgba(255, 255, 255, .92);
  --hero-from: #eff6ff;
  --hero-to: #f5f3ff;
  --shadow: 0 8px 24px rgba(15, 23, 42, .07);
  --star: #f59e0b;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color-scheme: light;
}

:root[data-theme="dark"] {
  --bg: #0b0f17;
  --surface: #111827;
  --card: #0f1623;
  --text: #f1f5f9;
  --body: #cbd5e1;
  --muted: #94a3b8;
  --border: #1f2a3b;
  --input-border: #334155;
  --link: #60a5fa;
  --blue-soft: rgba(37, 99, 235, .14);
  --blue-border: #1e40af;
  --danger: #f87171;
  --danger-soft: rgba(239, 68, 68, .12);
  --danger-border: #7f1d1d;
  --success: #34d399;
  --success-soft: rgba(16, 185, 129, .12);
  --success-border: #065f46;
  --warn: #fbbf24;
  --warn-soft: rgba(245, 158, 11, .1);
  --mark: rgba(250, 204, 21, .4);
  --code-inline: #fda4af;
  --code-inline-bg: #1e293b;
  --header-bg: rgba(11, 15, 23, .9);
  --hero-from: #0f1a2e;
  --hero-to: #161229;
  --shadow: 0 8px 24px rgba(0, 0, 0, .35);
  color-scheme: dark;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.65 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; }
:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }
.skip-link { position: absolute; left: -9999px; top: 8px; z-index: 100; background: var(--blue); color: #fff; padding: 8px 12px; border-radius: 8px; }
.skip-link:focus { left: 8px; }

/* ---------- Header & footer ---------- */
.site-header { position: sticky; top: 0; z-index: 20; border-bottom: 1px solid var(--border); background: var(--header-bg); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); }
.site-header .inner, .site-footer .inner { max-width: 1180px; margin: auto; padding: 14px 22px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { display: inline-flex; align-items: center; gap: 9px; font-size: 19px; font-weight: 700; color: var(--text); letter-spacing: -.01em; }
.brand:hover { text-decoration: none; }
.brand b { color: var(--blue); font-weight: 800; }
:root[data-theme="dark"] .brand b { color: #60a5fa; }
.header-right { display: flex; align-items: center; gap: 18px; }
nav { display: flex; gap: 18px; flex-wrap: wrap; }
.site-header nav a { color: var(--body); font-weight: 500; font-size: 15px; }
.site-header nav a:hover { color: var(--text); }
.icon-btn { width: 36px; height: 36px; padding: 0; display: inline-flex; align-items: center; justify-content: center; border-radius: 9px; border: 1px solid var(--border); background: transparent; color: var(--muted); cursor: pointer; }
.icon-btn:hover { background: var(--surface); color: var(--text); }
.theme-toggle .icon-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-sun { display: block; }
:root[data-theme="dark"] .theme-toggle .icon-moon { display: none; }
.site-footer { margin-top: 72px; border-top: 1px solid var(--border); color: var(--muted); font-size: 14px; }
.site-footer .inner { padding-top: 22px; padding-bottom: 22px; }
.site-footer nav { gap: 16px; }
.site-footer nav a { color: var(--muted); }
.site-footer nav a:hover { color: var(--text); }

/* ---------- Typography & generic blocks ---------- */
.container { max-width: 900px; margin: 0 auto; padding: 48px 22px; }
.narrow { max-width: 720px; }
.eyebrow { margin: 0; text-transform: uppercase; letter-spacing: .08em; font-size: 12.5px; font-weight: 700; color: var(--blue); }
:root[data-theme="dark"] .eyebrow { color: #60a5fa; }
h1 { font-size: clamp(32px, 6vw, 52px); line-height: 1.1; margin: 8px 0 18px; letter-spacing: -.025em; }
h2 { font-size: 26px; line-height: 1.25; margin: 38px 0 12px; letter-spacing: -.01em; }
h3 { font-size: 20px; margin: 28px 0 8px; }
.lead { font-size: 19px; color: var(--muted); max-width: 760px; }
.card { display: block; border: 1px solid var(--border); border-radius: 16px; padding: 24px; background: var(--card); color: inherit; margin: 18px 0; }
a.card:hover { border-color: var(--blue-border); text-decoration: none; box-shadow: var(--shadow); }
.meta { font-size: 14px; color: var(--muted); }
.badge { display: inline-block; padding: 3px 9px; border-radius: 999px; background: var(--blue-soft); color: var(--link); font-size: 12px; font-weight: 700; }
.article-body { font-size: 17.5px; }
.article-body p, .article-body li { color: var(--body); }
.article-body li { margin: 4px 0; }
.article-body pre { overflow: auto; padding: 16px 18px; border-radius: 12px; background: #0f172a; color: #e2e8f0; font-size: 14px; line-height: 1.6; }
:root[data-theme="dark"] .article-body pre { background: #070b12; border: 1px solid var(--border); }
.article-body code { font-family: var(--mono); font-size: .9em; }
.article-body :not(pre) > code { background: var(--code-inline-bg); padding: 2px 6px; border-radius: 5px; color: var(--code-inline); }
.article-body blockquote { border-left: 4px solid var(--blue-border); margin: 24px 0; padding: 4px 20px; color: var(--muted); }
.hero-image { width: 100%; max-height: 440px; object-fit: cover; border-radius: 18px; margin: 20px 0; }
.notice { padding: 12px 16px; border-radius: 10px; margin: 16px 0; background: var(--success-soft); color: var(--success); }
.notice.error, .error { background: var(--danger-soft); color: var(--danger); }

/* ---------- Buttons & form controls ---------- */
.button, button { display: inline-flex; align-items: center; justify-content: center; gap: 6px; border: 0; border-radius: 9px; background: var(--blue); color: #fff; padding: 10px 16px; font: inherit; font-size: 15px; font-weight: 650; cursor: pointer; line-height: 1.2; }
.button:hover, button:hover { background: var(--blue-dark); text-decoration: none; }
.button.secondary, button.secondary { background: var(--surface); color: var(--text); border: 1px solid var(--border); }
.button.secondary:hover, button.secondary:hover { background: var(--border); }
.button.danger, button.danger { background: #b91c1c; }
button:disabled { opacity: .5; cursor: not-allowed; }
label { display: block; font-weight: 700; margin: 18px 0 6px; }
input[type=text], input[type=password], input[type=email], input[type=number], input[type=search], input[type=datetime-local], textarea, select {
  width: 100%; border: 1px solid var(--input-border); border-radius: 9px; padding: 10px 12px; background: var(--card); color: var(--text); font: inherit;
}
input:focus, textarea:focus, select:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 3px rgba(37, 99, 235, .15); }
textarea { min-height: 360px; font-family: var(--mono); font-size: 14px; line-height: 1.6; }
.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.help { font-size: 13px; color: var(--muted); }

/* ---------- Admin ---------- */
.admin-shell { max-width: 1100px; margin: auto; padding: 32px 22px; }
.admin-bar { display: flex; justify-content: space-between; align-items: center; gap: 20px; margin-bottom: 30px; }
table { width: 100%; border-collapse: collapse; background: var(--card); border: 1px solid var(--border); }
th, td { text-align: left; padding: 13px; border-bottom: 1px solid var(--border); }
th { background: var(--surface); }
.actions { display: flex; gap: 8px; align-items: center; }
.actions form { margin: 0; }
.actions button { padding: 7px 10px; }
.login-box { max-width: 430px; margin: 10vh auto; padding: 30px; border: 1px solid var(--border); border-radius: 16px; }

/* ---------- Home ---------- */
.home-hero { background: linear-gradient(145deg, var(--hero-from) 0%, var(--bg) 55%, var(--hero-to) 100%); border-bottom: 1px solid var(--border); }
.home-hero-inner { max-width: 980px; margin: auto; padding: 84px 22px 74px; text-align: center; }
.home-hero .lead { margin: 0 auto 26px; }
.hero-actions { display: flex; justify-content: center; gap: 12px; flex-wrap: wrap; }
.home-section { max-width: 1180px; margin: 0 auto; padding: 64px 22px 0; }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 30px; margin-bottom: 24px; }
.section-heading h2 { margin: 4px 0 0; font-size: 32px; }
.section-heading > p { max-width: 500px; color: var(--muted); margin: 0; }
.tool-search { max-width: 420px; margin: 0 0 8px; }
.tool-search input { padding-left: 38px; background: var(--card) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2'%3E%3Ccircle cx='11' cy='11' r='8'/%3E%3Cpath d='m21 21-4.3-4.3'/%3E%3C/svg%3E") no-repeat 13px center; }
.tool-search-empty { color: var(--muted); display: none; }
.personal-block { margin-top: 30px; }
.personal-block[hidden] { display: none; }
.personal-block h3, .tool-category h3 { display: flex; align-items: center; gap: 8px; font-size: 14px; text-transform: uppercase; letter-spacing: .07em; color: var(--muted); margin: 0 0 14px; }
.personal-block h3 svg { fill: var(--star); }
.personal-block .clear-link { margin-left: auto; font-size: 12px; text-transform: none; letter-spacing: 0; font-weight: 500; background: none; color: var(--muted); padding: 0; }
.personal-block .clear-link:hover { color: var(--text); background: none; text-decoration: underline; }
.tool-category { margin-top: 38px; scroll-margin-top: 90px; }
.tool-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.tool-card-wrap { position: relative; }
.tool-card-wrap[hidden] { display: none; }
.tool-card { display: flex; gap: 14px; align-items: flex-start; height: 100%; border: 1px solid var(--border); border-radius: 14px; padding: 18px 44px 18px 18px; color: var(--text); background: var(--card); min-height: 108px; transition: border-color .15s, box-shadow .15s, transform .15s; }
.tool-card:hover { border-color: var(--blue-border); box-shadow: var(--shadow); text-decoration: none; transform: translateY(-1px); }
.tool-card strong { display: flex; align-items: center; gap: 8px; font-size: 16px; }
.tool-card small { display: block; color: var(--muted); font-size: 14px; line-height: 1.45; margin-top: 5px; }
.new-badge { font-size: 10px; font-weight: 800; text-transform: uppercase; letter-spacing: .05em; padding: 2px 6px; border-radius: 999px; background: var(--blue); color: #fff; }
.tool-icon { flex: 0 0 42px; height: 42px; display: flex; align-items: center; justify-content: center; border: 1px solid var(--border); border-radius: 10px; background: var(--surface); font: 700 13px var(--mono); color: var(--muted); }
.tool-card:hover .tool-icon { color: var(--link); border-color: var(--blue-border); }
.tool-icon-lg { flex-basis: 52px; height: 52px; font-size: 15px; border-radius: 12px; }
.tool-icon-sm { flex: 0 0 30px; height: 30px; font-size: 11px; border-radius: 8px; }
.fav-btn { position: absolute; top: 10px; right: 10px; width: 30px; height: 30px; padding: 0; border-radius: 8px; background: transparent; color: var(--muted); }
.fav-btn svg { fill: none; stroke: currentColor; stroke-width: 2; }
.fav-btn:hover { background: var(--surface); color: var(--star); }
.fav-btn[aria-pressed="true"] { color: var(--star); }
.fav-btn[aria-pressed="true"] svg { fill: var(--star); stroke: var(--star); }
.guide-highlight { margin-top: 70px; padding-top: 58px; padding-bottom: 58px; max-width: none; background: var(--surface); border: solid var(--border); border-width: 1px 0; }
.guide-highlight > .section-heading, .guide-grid { max-width: 1136px; margin-left: auto; margin-right: auto; }
.guide-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.guide-card { display: block; background: var(--card); border: 1px solid var(--border); border-radius: 16px; padding: 24px; color: var(--text); }
.guide-card:hover { text-decoration: none; border-color: var(--blue-border); }
.guide-card h3 { margin: 12px 0 8px; }
.guide-card p { color: var(--muted); }
.trust-panel { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; }
.trust-panel h2 { font-size: 19px; margin: 0 0 8px; }
.trust-panel p { color: var(--muted); margin: 0; }

/* ---------- Tool pages ---------- */
.tool-page { max-width: 1080px; margin: 0 auto; padding: 28px 22px 0; }
.breadcrumb { display: flex; flex-wrap: wrap; gap: 8px; font-size: 14px; color: var(--muted); margin-bottom: 22px; }
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--text); }
.breadcrumb [aria-current] { color: var(--text); }
.tool-head { display: flex; align-items: center; gap: 16px; margin-bottom: 22px; }
.tool-head h1 { font-size: clamp(26px, 4vw, 34px); margin: 0 0 2px; }
.tool-head p { margin: 0; color: var(--muted); }
.tool-head-text { flex: 1; min-width: 0; }
.tool-head-actions { display: flex; gap: 8px; }
.btn { padding: 8px 14px; font-size: 14px; border-radius: 9px; }
.btn-ghost { background: transparent; color: var(--muted); border: 1px solid var(--border); }
.btn-ghost:hover { background: var(--surface); color: var(--text); }
.fav-btn-inline { position: static; width: auto; height: auto; padding: 8px 14px; }
.tool-panel { border: 1px solid var(--border); border-radius: 18px; background: var(--card); padding: 22px; box-shadow: 0 1px 2px rgba(15, 23, 42, .04); }
.privacy-note { font-size: 13px; color: var(--muted); margin: 12px 4px 0; }
.privacy-note svg { vertical-align: -2px; margin-right: 4px; }
.privacy-note a { color: var(--muted); text-decoration: underline; }
.tool-layout { display: grid; grid-template-columns: minmax(0, 1fr) 280px; gap: 48px; margin-top: 46px; }
.tool-content > h2:first-child { margin-top: 0; }
.tool-content h2 { font-size: 24px; }
.tool-content h3 { font-size: 18.5px; }
.tool-aside { display: flex; flex-direction: column; gap: 16px; }
.aside-card { display: block; position: sticky; top: 88px; border: 1px solid var(--border); border-radius: 14px; padding: 18px; background: var(--surface); color: var(--text); }
.aside-card + .aside-card { position: static; }
.guide-link:hover { text-decoration: none; border-color: var(--blue-border); }
.aside-card strong { display: block; margin: 6px 0 4px; line-height: 1.35; }
.aside-card small { display: block; color: var(--muted); font-size: 13.5px; line-height: 1.5; }
.related-list { list-style: none; margin: 10px 0 0; padding: 0; }
.related-list a { display: flex; align-items: center; gap: 10px; padding: 7px 0; color: var(--text); font-size: 15px; }

/* Tool UI building blocks */
.stack > * + * { margin-top: 16px; }
.row { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.row-end { margin-left: auto; }
.io-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { display: flex; flex-direction: column; gap: 7px; min-width: 0; }
.field-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; min-height: 30px; }
.field-label, .tool-panel label.field-label { margin: 0; font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
.tool-panel textarea { min-height: 0; height: 260px; resize: vertical; background: var(--surface); }
.tool-panel textarea.short { height: 140px; }
.tool-panel textarea.tall { height: 440px; }
.tool-panel textarea.prose { font-family: inherit; font-size: 15.5px; }
.tool-panel textarea[readonly] { background: var(--surface); }
.tool-panel input[type=text], .tool-panel input[type=number], .tool-panel select, .tool-panel input[type=datetime-local] { background: var(--card); }
.mono { font-family: var(--mono); }
.inline-label { display: inline-flex; align-items: center; gap: 8px; margin: 0; font-weight: 500; font-size: 14px; color: var(--muted); }
.inline-label select, .inline-label input { width: auto; padding: 6px 10px; font-size: 14px; }
.check { display: inline-flex; align-items: center; gap: 8px; margin: 0; font-weight: 500; font-size: 14.5px; color: var(--body); cursor: pointer; }
.check input { width: 16px; height: 16px; accent-color: var(--blue); }
.seg { display: inline-flex; padding: 3px; gap: 3px; border-radius: 11px; background: var(--surface); border: 1px solid var(--border); flex-wrap: wrap; }
.seg button { background: transparent; color: var(--muted); padding: 7px 14px; font-size: 14px; font-weight: 600; border-radius: 8px; }
.seg button:hover { color: var(--text); background: transparent; }
.seg button[aria-pressed="true"] { background: var(--blue); color: #fff; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { background: var(--card); color: var(--body); border: 1px solid var(--border); padding: 7px 12px; font-size: 14px; font-weight: 600; font-family: var(--mono); border-radius: 8px; }
.chip:hover { background: var(--surface); color: var(--text); }
.chip[aria-pressed="true"] { background: var(--blue); border-color: var(--blue); color: #fff; }
.copy-btn { background: transparent; color: var(--muted); border: 1px solid var(--border); padding: 5px 10px; font-size: 12.5px; font-weight: 600; border-radius: 7px; }
.copy-btn:hover { background: var(--surface); color: var(--text); }
.copy-btn.copied { color: var(--success); border-color: var(--success); }
.output-error { padding: 12px 14px; border-radius: 10px; border: 1px solid var(--danger-border); background: var(--danger-soft); color: var(--danger); font-family: var(--mono); font-size: 13.5px; white-space: pre-wrap; }
.output-ok { padding: 10px 14px; border-radius: 10px; border: 1px solid var(--success-border); background: var(--success-soft); color: var(--success); font-size: 14px; }
.output-box { padding: 14px 16px; border-radius: 10px; border: 1px solid var(--border); background: var(--surface); font-family: var(--mono); font-size: 14px; white-space: pre-wrap; word-break: break-word; }
.hint { font-size: 13.5px; color: var(--muted); margin: 0; }
.warn-box { padding: 10px 14px; border-radius: 10px; background: var(--warn-soft); color: var(--warn); font-size: 13.5px; }
.stat-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; }
.stat { padding: 14px; border: 1px solid var(--border); border-radius: 12px; background: var(--surface); text-align: center; }
.stat b { display: block; font-size: 24px; color: var(--link); font-variant-numeric: tabular-nums; }
.stat span { font-size: 12.5px; color: var(--muted); }
.kv { display: grid; grid-template-columns: max-content minmax(0, 1fr) auto; gap: 8px 14px; align-items: center; padding: 12px 16px; border: 1px solid var(--border); border-radius: 12px; background: var(--surface); }
.kv dt { font-size: 12.5px; font-weight: 700; color: var(--muted); text-transform: uppercase; letter-spacing: .05em; }
.kv dd { margin: 0; font-family: var(--mono); font-size: 14px; word-break: break-all; }
.status-pill { display: inline-flex; align-items: center; gap: 6px; padding: 4px 11px; border-radius: 999px; font-size: 13px; font-weight: 600; }
.status-pill::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.status-ok { background: var(--success-soft); color: var(--success); }
.status-bad { background: var(--danger-soft); color: var(--danger); }
.status-neutral { background: var(--surface); color: var(--muted); border: 1px solid var(--border); }
.swatch { height: 120px; border-radius: 14px; border: 1px solid var(--border); }
.color-cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.color-card { padding: 14px; border: 1px solid var(--border); border-radius: 12px; background: var(--surface); }
.triple { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; }
.triple label { margin: 0 0 4px; font-size: 11.5px; color: var(--muted); }
.color-input { width: 52px; height: 42px; padding: 2px; border: 1px solid var(--input-border); border-radius: 9px; background: var(--card); cursor: pointer; }
.gradient-preview { height: 220px; border-radius: 16px; border: 1px solid var(--border); }
.stop-row { display: grid; grid-template-columns: 52px 120px minmax(0, 1fr) 46px 36px; gap: 10px; align-items: center; }
.stop-row input[type=range] { width: 100%; accent-color: var(--blue); }
.range { width: 100%; accent-color: var(--blue); }
.mark-preview { min-height: 90px; line-height: 1.7; }
.mark-preview mark { background: var(--mark); color: inherit; border-radius: 3px; padding: 0 1px; }
.match-list { border: 1px solid var(--border); border-radius: 12px; overflow: hidden; }
.match-list > div { display: grid; grid-template-columns: 44px minmax(0, 1fr) auto; gap: 10px; padding: 9px 14px; border-top: 1px solid var(--border); font-size: 14px; }
.match-list > div:first-child { border-top: 0; }
.match-list .idx { color: var(--muted); font-family: var(--mono); font-size: 12.5px; }
.match-list .val { font-family: var(--mono); word-break: break-all; }
.match-list .groups { display: block; margin-top: 3px; font-size: 12.5px; color: var(--muted); }
.diff-table-wrap { border: 1px solid var(--border); border-radius: 12px; overflow: auto; max-height: 520px; background: var(--card); }
.diff-table { border: 0; width: 100%; font-family: var(--mono); font-size: 13.5px; background: transparent; }
.diff-table td { padding: 1px 10px; border: 0; white-space: pre; vertical-align: top; }
.diff-table .ln { width: 1%; color: var(--muted); text-align: right; user-select: none; font-size: 12px; }
.diff-table .sign { width: 1%; user-select: none; font-weight: 700; }
.diff-add { background: var(--success-soft); }
.diff-add .sign, .diff-add .txt { color: var(--success); }
.diff-del { background: var(--danger-soft); }
.diff-del .sign, .diff-del .txt { color: var(--danger); }
.md-preview { height: 440px; overflow: auto; padding: 18px 22px; border: 1px solid var(--border); border-radius: 9px; background: var(--card); font-size: 15.5px; }
.md-preview > :first-child { margin-top: 0; }
.md-preview h1 { font-size: 28px; margin: 18px 0 10px; }
.md-preview h2 { font-size: 22px; margin: 22px 0 8px; }
.md-preview h3 { font-size: 18px; }
.md-preview pre { background: var(--surface); border: 1px solid var(--border); padding: 12px 14px; border-radius: 9px; overflow: auto; }
.md-preview code { font-family: var(--mono); font-size: .88em; }
.md-preview :not(pre) > code { background: var(--code-inline-bg); padding: 1px 5px; border-radius: 4px; }
.md-preview blockquote { margin: 12px 0; padding: 2px 16px; border-left: 4px solid var(--blue-border); color: var(--muted); }
.md-preview table { width: auto; font-size: 14.5px; }
.md-preview th, .md-preview td { padding: 6px 10px; border: 1px solid var(--border); }
.md-preview img { max-width: 100%; }
.pw-list { display: flex; flex-direction: column; gap: 8px; }
.pw-item { display: flex; align-items: center; gap: 10px; padding: 10px 14px; border: 1px solid var(--border); border-radius: 10px; background: var(--surface); font-family: var(--mono); font-size: 15px; }
.pw-item span { flex: 1; word-break: break-all; }
.meter { height: 8px; border-radius: 99px; background: var(--border); overflow: hidden; flex: 1; }
.meter i { display: block; height: 100%; border-radius: 99px; transition: width .2s; }
.hash-rows { display: flex; flex-direction: column; gap: 10px; }
.hash-row { padding: 12px 14px; border: 1px solid var(--border); border-radius: 12px; background: var(--surface); }
.hash-row.match { border-color: var(--success); background: var(--success-soft); }
.hash-row .head { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 4px; }
.hash-row .head b { font-size: 13px; letter-spacing: .03em; }
.hash-row code { display: block; font-family: var(--mono); font-size: 13.5px; word-break: break-all; color: var(--text); }
.hash-row code:empty::before { content: "—"; color: var(--muted); }
.entity-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px; }
.entity-grid div { display: flex; justify-content: space-between; padding: 7px 10px; border: 1px solid var(--border); border-radius: 8px; font-family: var(--mono); font-size: 13px; background: var(--surface); }
.unit-grid { display: grid; grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr); gap: 14px; align-items: end; }
.unit-grid .pair { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 8px; }
.big-result { font-size: 18px; text-align: center; color: var(--body); }
.big-result b { color: var(--text); }
.panel-section + .panel-section { border-top: 1px solid var(--border); margin-top: 22px; padding-top: 22px; }
.panel-section h2 { font-size: 16px; margin: 0 0 12px; }
.live-clock { font-family: var(--mono); font-size: 15px; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .tool-layout { grid-template-columns: 1fr; gap: 28px; }
  .aside-card { position: static; }
  .stat-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (max-width: 800px) {
  .tool-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .trust-panel { grid-template-columns: 1fr; }
  .section-heading { align-items: flex-start; flex-direction: column; }
  .guide-grid { grid-template-columns: 1fr; }
  .io-grid, .color-cards { grid-template-columns: 1fr; }
  .entity-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 640px) {
  .site-header .inner { flex-wrap: wrap; gap: 10px; }
  .header-right { width: 100%; justify-content: space-between; }
  .site-header nav { gap: 14px; }
  .site-footer .inner { flex-direction: column; align-items: flex-start; }
  .tool-head { flex-wrap: wrap; }
  .tool-head-actions { width: 100%; }
  .tool-panel { padding: 16px; border-radius: 14px; }
  .stat-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .unit-grid { grid-template-columns: 1fr; }
  .unit-grid .swap { justify-self: center; transform: rotate(90deg); }
  .stop-row { grid-template-columns: 44px minmax(0, 1fr) 40px 32px; }
  .stop-row .stop-hex { display: none; }
}
@media (max-width: 560px) {
  .grid, .tool-grid { grid-template-columns: 1fr; }
  .admin-bar { align-items: flex-start; flex-direction: column; }
  .home-hero-inner { padding-top: 56px; }
  .home-section { padding-top: 48px; }
  .admin-shell table, .admin-shell thead, .admin-shell tbody, .admin-shell tr, .admin-shell th, .admin-shell td { display: block; }
  .admin-shell thead { display: none; }
  .admin-shell td { border: 0; padding: 8px 12px; }
  .admin-shell tr { display: block; border-bottom: 1px solid var(--border); padding: 10px 0; }
}