/* MyTools design system — vanilla CSS, dark mode default */

:root {
  --bg: #0a0a0c;
  --bg-elevated: #121215;
  --card: #17171b;
  --card-hover: #1d1d22;
  --border: #27272e;
  --border-strong: #35353e;
  --text: #f2f2f5;
  --text-muted: #a3a3ad;
  --text-faint: #6f6f7a;
  --accent: #6366f1;
  --accent-hover: #7880f5;
  --accent-text: #ffffff;
  --accent-soft: rgba(99, 102, 241, 0.14);
  --success: #22c55e;
  --warning: #f59e0b;
  --danger: #ef4444;
  --danger-soft: rgba(239, 68, 68, 0.12);
  --success-soft: rgba(34, 197, 94, 0.12);
  --warning-soft: rgba(245, 158, 11, 0.12);
  --code-bg: #0e0e11;
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 16px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --header-h: 64px;
  color-scheme: dark;
}

:root[data-theme="light"] {
  --bg: #f7f7f9;
  --bg-elevated: #ffffff;
  --card: #ffffff;
  --card-hover: #f0f0f4;
  --border: #e4e4ea;
  --border-strong: #d1d1db;
  --text: #17171b;
  --text-muted: #52525b;
  --text-faint: #8b8b96;
  --accent: #4f46e5;
  --accent-hover: #4338ca;
  --accent-text: #ffffff;
  --accent-soft: rgba(79, 70, 229, 0.09);
  --code-bg: #f1f1f5;
  --shadow: 0 4px 24px rgba(20, 20, 30, 0.08);
  --shadow-sm: 0 2px 8px rgba(20, 20, 30, 0.06);
  color-scheme: light;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  transition: background-color .15s ease, color .15s ease;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }

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

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent);
  color: #fff;
  padding: 10px 16px;
  border-radius: 0 0 8px 0;
  z-index: 1000;
}
.skip-link:focus { left: 0; }

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 20px;
}

.container-narrow {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.site-header .container {
  display: flex;
  align-items: center;
  gap: 20px;
  width: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  flex-shrink: 0;
}
.logo .logo-mark {
  width: 30px; height: 30px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), #a855f7);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 800; font-size: 0.95rem;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}
.main-nav a {
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 0.92rem;
  font-weight: 500;
}
.main-nav a:hover, .main-nav a[aria-current="page"] {
  color: var(--text);
  background: var(--card-hover);
}

.header-spacer { flex: 1; }

.header-search {
  position: relative;
  width: 240px;
}
.header-search input {
  width: 100%;
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px; height: 38px;
  border-radius: var(--radius-sm);
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-muted);
  cursor: pointer;
}
.icon-btn:hover { background: var(--card-hover); color: var(--text); border-color: var(--border); }
.icon-btn svg { width: 19px; height: 19px; }

.theme-toggle .icon-moon { display: none; }
:root[data-theme="light"] .theme-toggle .icon-sun { display: none; }
:root[data-theme="light"] .theme-toggle .icon-moon { display: block; }

.nav-toggle { display: none; }

/* ---------- Search dropdown ---------- */
.search-results {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  right: 0;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  max-height: 400px;
  overflow-y: auto;
  z-index: 200;
  display: none;
}
.search-results.open { display: block; }
.search-results a {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
}
.search-results a:last-child { border-bottom: none; }
.search-results a:hover, .search-results a.active { background: var(--card-hover); }
.search-results .sr-name { font-weight: 600; font-size: 0.92rem; }
.search-results .sr-desc { font-size: 0.8rem; color: var(--text-muted); }
.search-results .sr-empty { padding: 16px 14px; color: var(--text-muted); font-size: 0.88rem; }
.search-results .sr-cat {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent);
  font-weight: 600;
}

/* ---------- Buttons & Forms ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  font-weight: 600;
  font-size: 0.92rem;
  cursor: pointer;
  transition: background-color .12s ease, border-color .12s ease, transform .05s ease;
  white-space: nowrap;
}
.btn:hover { background: var(--card-hover); border-color: var(--border-strong); }
.btn:active { transform: translateY(1px); }
.btn svg { width: 16px; height: 16px; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn-sm { padding: 7px 12px; font-size: 0.82rem; }
.btn-block { width: 100%; }
.btn[disabled] { opacity: 0.5; cursor: not-allowed; }

.btn-row { display: flex; flex-wrap: wrap; gap: 10px; }

input[type="text"], input[type="search"], input[type="number"], input[type="url"], input[type="password"],
textarea, select {
  width: 100%;
  padding: 10px 13px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 0.95rem;
  font-family: var(--font-sans);
}
textarea { font-family: var(--font-mono); resize: vertical; min-height: 140px; line-height: 1.5; }
input:focus, textarea:focus, select:focus { border-color: var(--accent); }
input::placeholder, textarea::placeholder { color: var(--text-faint); }

label { display: block; font-size: 0.85rem; font-weight: 600; margin-bottom: 6px; color: var(--text-muted); }
.field { margin-bottom: 16px; }
.field-row { display: flex; gap: 12px; flex-wrap: wrap; }
.field-row > .field { flex: 1; min-width: 160px; }
.field-hint { font-size: 0.78rem; color: var(--text-faint); margin-top: 5px; }

.checkbox-group { display: flex; flex-wrap: wrap; gap: 14px; }
.checkbox-item { display: flex; align-items: center; gap: 8px; font-size: 0.9rem; }
.checkbox-item input { width: 17px; height: 17px; accent-color: var(--accent); }

input[type="range"] { accent-color: var(--accent); width: 100%; }

/* ---------- Cards ---------- */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

.tool-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  display: flex;
  gap: 14px;
  align-items: flex-start;
  transition: border-color .12s ease, transform .12s ease, background-color .12s ease;
}
.tool-card:hover { border-color: var(--border-strong); background: var(--card-hover); transform: translateY(-2px); }
.tool-card .tool-icon {
  width: 40px; height: 40px;
  border-radius: var(--radius-sm);
  background: var(--accent-soft);
  color: var(--accent);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.tool-card .tool-icon svg { width: 20px; height: 20px; }
.tool-card h3 { margin: 0 0 4px; font-size: 1rem; }
.tool-card p { margin: 0; font-size: 0.85rem; color: var(--text-muted); }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 14px;
}

.category-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  display: block;
}
.category-card:hover { border-color: var(--border-strong); background: var(--card-hover); }
.category-card h3 { margin: 0 0 6px; font-size: 1.05rem; }
.category-card p { margin: 0; font-size: 0.85rem; color: var(--text-muted); }
.category-card .cat-count { font-size: 0.75rem; color: var(--accent); font-weight: 600; margin-top: 8px; display: block; }

/* ---------- Hero ---------- */
.hero { padding: 64px 0 40px; text-align: center; }
.hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  letter-spacing: -0.03em;
  margin: 0 0 14px;
  font-weight: 800;
}
.hero p { color: var(--text-muted); font-size: 1.1rem; max-width: 560px; margin: 0 auto 28px; }

.hero-search { max-width: 560px; margin: 0 auto; position: relative; }
.hero-search input {
  padding: 15px 18px 15px 46px;
  font-size: 1rem;
  border-radius: var(--radius);
}
.hero-search .search-icon {
  position: absolute; left: 16px; top: 50%; transform: translateY(-50%);
  color: var(--text-faint); width: 19px; height: 19px; pointer-events: none;
}

section { padding: 36px 0; }
.section-title { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 18px; gap: 12px; flex-wrap: wrap; }
.section-title h2 { font-size: 1.4rem; margin: 0; letter-spacing: -0.02em; }
.section-title a { font-size: 0.88rem; color: var(--accent); font-weight: 600; }

/* ---------- Breadcrumbs ---------- */
.breadcrumbs { font-size: 0.82rem; color: var(--text-faint); margin-bottom: 18px; display: flex; gap: 6px; flex-wrap: wrap; }
.breadcrumbs a { color: var(--text-muted); }
.breadcrumbs a:hover { color: var(--accent); }

/* ---------- Tool page ---------- */
.tool-header { margin-bottom: 24px; }
.tool-header h1 { font-size: 1.9rem; margin: 0 0 8px; letter-spacing: -0.02em; }
.tool-header p { color: var(--text-muted); margin: 0 0 12px; max-width: 640px; }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.74rem;
  font-weight: 600;
  border: 1px solid var(--border);
}
.badge-local { background: var(--success-soft); color: var(--success); border-color: transparent; }
.badge-server { background: var(--warning-soft); color: var(--warning); border-color: transparent; }
.badge svg { width: 12px; height: 12px; }

.tool-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; align-items: start; }
.tool-grid.single { grid-template-columns: 1fr; }

.output-box {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  white-space: pre-wrap;
  word-break: break-word;
  min-height: 60px;
  max-height: 480px;
  overflow: auto;
}
.output-box:empty::before { content: attr(data-placeholder); color: var(--text-faint); }

table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
th, td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--border); }
th { color: var(--text-muted); font-weight: 600; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.04em; }
td { font-family: var(--font-mono); }
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius-sm); }
.table-wrap table { border: none; }
.table-wrap th, .table-wrap td { border-bottom: 1px solid var(--border); }
.table-wrap tr:last-child td { border-bottom: none; }

.result-list { display: flex; flex-direction: column; gap: 10px; }
.result-item {
  display: flex; justify-content: space-between; align-items: center; gap: 10px;
  padding: 10px 12px; background: var(--bg-elevated); border: 1px solid var(--border); border-radius: var(--radius-sm);
}
.result-item .r-label { font-size: 0.78rem; color: var(--text-muted); }
.result-item .r-value { font-family: var(--font-mono); font-size: 0.92rem; font-weight: 600; }

.copy-mini { background: none; border: none; color: var(--text-faint); cursor: pointer; padding: 4px; border-radius: 6px; }
.copy-mini:hover { color: var(--accent); background: var(--card-hover); }
.copy-mini svg { width: 15px; height: 15px; }

.error-box {
  background: var(--danger-soft);
  border: 1px solid transparent;
  color: var(--danger);
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  margin-top: 10px;
  display: none;
}
.error-box.visible { display: block; }

.info-note {
  background: var(--accent-soft);
  color: var(--text);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font-size: 0.85rem;
  margin-top: 14px;
}
.info-note strong { color: var(--accent); }

.strength-meter { height: 8px; border-radius: 999px; background: var(--border); overflow: hidden; margin-top: 8px; }
.strength-meter > span { display: block; height: 100%; border-radius: 999px; transition: width .15s ease, background-color .15s ease; }

.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(110px, 1fr)); gap: 10px; margin-top: 14px; }
.stat-box { background: var(--bg-elevated); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 12px; text-align: center; }
.stat-box .stat-num { font-size: 1.4rem; font-weight: 700; }
.stat-box .stat-label { font-size: 0.72rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.04em; }

.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 18px; }
.tab-btn {
  background: none; border: none; padding: 10px 16px; color: var(--text-muted); font-weight: 600;
  font-size: 0.9rem; cursor: pointer; border-bottom: 2px solid transparent; margin-bottom: -1px;
}
.tab-btn.active { color: var(--accent); border-color: var(--accent); }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

.related-tools { margin-top: 40px; }

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--text);
  color: var(--bg);
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 600;
  opacity: 0;
  pointer-events: none;
  transition: opacity .18s ease, transform .18s ease;
  z-index: 1000;
  box-shadow: var(--shadow);
}
.toast.visible { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 40px 0 28px;
  margin-top: 60px;
  color: var(--text-muted);
  font-size: 0.88rem;
}
.footer-grid { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; margin-bottom: 24px; }
.footer-col h4 { color: var(--text); font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.05em; margin: 0 0 12px; }
.footer-col a { display: block; color: var(--text-muted); padding: 4px 0; font-size: 0.88rem; }
.footer-col a:hover { color: var(--accent); }
.footer-bottom { border-top: 1px solid var(--border); padding-top: 20px; font-size: 0.8rem; color: var(--text-faint); }

/* ---------- Misc pages ---------- */
.prose h2 { font-size: 1.3rem; margin-top: 32px; }
.prose p, .prose li { color: var(--text-muted); }
.prose ul { padding-left: 22px; }

.empty-state { text-align: center; padding: 60px 20px; color: var(--text-muted); }
.empty-state h1 { font-size: 4rem; margin: 0; color: var(--border-strong); }

.kv-list { display: grid; grid-template-columns: max-content 1fr; gap: 8px 16px; font-size: 0.9rem; }
.kv-list dt { color: var(--text-muted); }
.kv-list dd { margin: 0; font-family: var(--font-mono); }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .tool-grid { grid-template-columns: 1fr; }
  .header-search { display: none; }
}

@media (max-width: 720px) {
  .main-nav { display: none; }
  .nav-toggle { display: inline-flex; }
  .site-header.nav-open .main-nav {
    display: flex;
    position: absolute;
    top: var(--header-h);
    left: 0; right: 0;
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 10px;
    gap: 2px;
  }
  .site-header.nav-open .main-nav a { padding: 12px 14px; }
  .hero { padding: 40px 0 28px; }
  .footer-grid { flex-direction: column; gap: 20px; }
}

@media (max-width: 480px) {
  .btn-row { flex-direction: column; }
  .btn-row .btn { width: 100%; }
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
}