:root {
  --page-bg: #111827;
  --card-bg: #1f2937;
  --sidebar-bg: #0d1117;
  --primary: #38bdf8;
  --primary-hover: #7dd3fc;
  --primary-dim: rgba(56, 189, 248, 0.12);
  --text: #f1f5f9;
  --muted: #94a3b8;
  --border: #374151;
  --input-bg: #0d1117;
  --code-bg: #0d1117;
  --success-bg: #052e16;
  --success-border: #166534;
  --success-text: #4ade80;
  --error-bg: #450a0a;
  --error-border: #991b1b;
  --error-text: #f87171;
  --topbar-bg: #0d1117;
  --radius: 8px;
  --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.4), 0 1px 2px rgba(0, 0, 0, 0.3);

  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* Visually hidden but readable by screen readers and search engine crawlers */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 15px;
  line-height: 1.6;
  background: var(--page-bg);
  color: var(--text);
  min-height: 100vh;
}

/* ── Top bar ──────────────────────────────────────────────── */

.topbar {
  background: var(--topbar-bg);
  height: 52px;
  padding: 0 32px;
  display: flex;
  align-items: center;
  gap: 24px;
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid #1f2937;
}

.topbar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
}

.topbar-logo-icon {
  width: 28px;
  height: 28px;
  background: var(--primary);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--topbar-bg);
}

.topbar-logo-text {
  font-size: 15px;
  font-weight: 600;
  color: #e2e8f0;
  letter-spacing: -0.01em;
}

.topbar-analytics-link {
  margin-left: auto;
  font-size: 13px;
  font-weight: 500;
  color: #64748b;
  text-decoration: none;
  padding: 4px 10px;
  border-radius: 6px;
  transition: color 0.15s, background 0.15s;
}

.topbar-analytics-link:hover {
  color: #e2e8f0;
  background: rgba(255, 255, 255, 0.06);
}

/* ── Breadcrumb ───────────────────────────────────────────── */

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
}

.breadcrumb a {
  color: #64748b;
  text-decoration: none;
  transition: color 0.12s;
}

.breadcrumb a:hover {
  color: #e2e8f0;
}

.breadcrumb-sep {
  color: #374151;
  font-size: 15px;
}

.breadcrumb-current {
  color: #cbd5e1;
  font-weight: 500;
}

/* ── Main ─────────────────────────────────────────────────── */

.main {
  min-height: calc(100vh - 52px);
  background: var(--page-bg);
}

/* ── Home layout ──────────────────────────────────────────── */

.home-layout {
  display: flex;
  min-height: calc(100vh - 52px);
}

/* ── Sidebar ──────────────────────────────────────────────── */

.sidebar {
  width: 200px;
  flex-shrink: 0;
  border-right: 1px solid #1a2332;
  background: var(--sidebar-bg);
  padding: 0;
  overflow: hidden;
  transition: width 0.25s ease;
}

.sidebar--closed {
  width: 0;
  border-right: none;
}

.sidebar-content {
  padding: 16px;
  min-width: 168px;
}

.sidebar-toggle {
  position: absolute;
  top: 8px;
  left: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--card-bg);
  color: var(--muted);
  cursor: pointer;
  transition: background 0.12s, color 0.12s, border-color 0.12s;
  z-index: 10;
}

.sidebar-toggle:hover {
  background: #374151;
  border-color: var(--primary);
  color: var(--text);
}

.sidebar-toggle svg {
  flex-shrink: 0;
  transition: transform 0.25s ease;
}

.sidebar-toggle--closed svg {
  transform: rotate(180deg);
}

.sidebar-title {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #4b5563;
  margin-bottom: 12px;
}

.sidebar-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.tag-chip {
  display: inline-block;
  text-align: center;
  padding: 4px 10px;
  border: 1px solid #2d3748;
  border-radius: 6px;
  background: transparent;
  color: var(--muted);
  font-size: 12.5px;
  font-family: inherit;
  cursor: pointer;
  transition: background 0.12s, border-color 0.12s, color 0.12s;
}

.tag-chip:hover {
  background: rgba(56, 189, 248, 0.06);
  border-color: #4b5563;
  color: var(--text);
}

.tag-chip--active {
  background: rgba(56, 189, 248, 0.15);
  border-color: var(--primary);
  color: var(--primary);
}

.tag-chip--active:hover {
  background: rgba(56, 189, 248, 0.2);
  border-color: var(--primary-hover);
  color: var(--primary-hover);
}

/* ── Home main area ───────────────────────────────────────── */

.home-main {
  flex: 1;
  min-width: 0;
  position: relative;
}

.no-tags-area {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - 52px);
  transition: min-height 0.2s ease, padding 0.2s ease;
}

/* When tags are active the hero collapses to a compact search bar at the top */
.tags-active .no-tags-area {
  min-height: unset;
  align-items: flex-start;
  justify-content: flex-start;
  padding: 28px 32px 0;
}

.tags-active .home-title,
.tags-active .home-subtitle {
  display: none;
}

.tags-active .home-hero {
  text-align: left;
  max-width: 100%;
  padding: 0;
}

.tags-active .search-wrap {
  margin-top: 0;
  margin-left: 0;
}

.tags-area {
  padding: 16px 32px 48px;
}

/* ── Home page ────────────────────────────────────────────── */

.home-hero {
  padding: 0 32px;
  text-align: center;
  width: 100%;
  max-width: 560px;
}

.home-title {
  font-size: 34px;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text);
  margin-bottom: 8px;
}

.home-subtitle {
  font-size: 16px;
  color: var(--muted);
}

/* ── Search bar ───────────────────────────────────────────── */

.search-wrap {
  position: relative;
  max-width: 480px;
  margin: 28px auto 0;
  text-align: left;
}

.search-box {
  position: relative;
  display: flex;
  align-items: center;
}

.search-icon {
  position: absolute;
  right: 14px;
  width: 16px;
  height: 16px;
  color: #4b5563;
  pointer-events: none;
}

.search-input {
  width: 100%;
  padding: 11px 42px 11px 16px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--card-bg);
  color: var(--text);
  font-size: 14px;
  font-family: inherit;
  box-shadow: var(--card-shadow);
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.search-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.15);
}

.search-input::placeholder {
  color: #4b5563;
}

.search-dropdown {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  right: 0;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
  list-style: none;
  z-index: 200;
  overflow: hidden;
  padding: 4px 0;
}

.search-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  cursor: pointer;
  transition: background 0.1s;
}

.search-item.active {
  background: #374151;
}

.search-item-icon {
  font-size: 17px;
  width: 28px;
  text-align: center;
  flex-shrink: 0;
  color: var(--muted);
}

.search-item-text {
  display: flex;
  flex-direction: column;
  gap: 1px;
  min-width: 0;
}

.search-item-name {
  font-size: 13.5px;
  font-weight: 500;
  color: var(--text);
}

.search-item-cat {
  font-size: 11.5px;
  color: var(--muted);
}

/* ── Tool tags ────────────────────────────────────────────── */

.tool-block-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-top: 10px;
}

.tool-tag {
  font-size: 11px;
  font-weight: 500;
  color: #7dd3fc;
  background: rgba(56, 189, 248, 0.1);
  border: 1px solid rgba(56, 189, 248, 0.18);
  border-radius: 4px;
  padding: 2px 7px;
  text-transform: lowercase;
  letter-spacing: 0.02em;
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
  padding: 28px 32px 48px;
  max-width: 1100px;
}

.tool-block {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 22px;
  text-decoration: none;
  color: inherit;
  display: block;
  transition: border-color 0.15s, background 0.15s, transform 0.15s;
}

.tool-block:hover {
  border-color: var(--primary);
  background: #243347;
  transform: translateY(-1px);
}

.tool-block-icon {
  font-size: 26px;
  margin-bottom: 10px;
  line-height: 1;
}

.tool-block-name {
  font-size: 14.5px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
}

.tool-block-desc {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.5;
}

/* ── Tool page ────────────────────────────────────────────── */

.tool-page-header {
  padding: 28px 32px 24px;
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
}

.tool-page-title {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 4px;
}

.tool-page-desc {
  font-size: 14px;
  color: var(--muted);
}

.tool-page-body {
  padding: 28px 32px;
  max-width: 860px;
}

/* ── Card ─────────────────────────────────────────────────── */

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}

.card + .card {
  margin-top: 20px;
}

.card-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

/* ── Form ─────────────────────────────────────────────────── */

.form-group {
  margin-bottom: 16px;
}

.form-group:last-child {
  margin-bottom: 0;
}

label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--muted);
  margin-bottom: 6px;
}

input[type="text"],
input[type="number"],
input[type="url"],
select,
textarea {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--input-bg);
  color: var(--text);
  font-size: 13.5px;
  font-family: inherit;
  transition: border-color 0.15s, box-shadow 0.15s;
  outline: none;
}

input[type="text"]:focus,
input[type="number"]:focus,
input[type="url"]:focus,
select:focus,
textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.12);
}

input[type="text"]::placeholder,
input[type="url"]::placeholder,
textarea::placeholder {
  color: #4b5563;
}

textarea {
  font-family: "SFMono-Regular", "SF Mono", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 12.5px;
  resize: vertical;
  min-height: 140px;
}

input[type="file"] {
  width: 100%;
  padding: 8px 12px;
  border: 1px dashed var(--border);
  border-radius: 6px;
  background: var(--input-bg);
  color: var(--muted);
  font-size: 13px;
  cursor: pointer;
}

input[type="file"]:hover {
  border-color: var(--primary);
  color: var(--text);
}

select {
  cursor: pointer;
}

.hint {
  margin-top: 4px;
  font-size: 12px;
  color: var(--muted);
}

/* ── Button ───────────────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  background: #0284c7;
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: 13.5px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s;
  font-family: inherit;
}

.btn:hover {
  background: #0369a1;
}

.btn:active {
  transform: translateY(1px);
}

/* ── Result boxes ─────────────────────────────────────────── */

.result {
  margin-top: 20px;
}

.result-header {
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--text);
}

.result-success {
  background: var(--success-bg);
  border: 1px solid var(--success-border);
  border-radius: var(--radius);
  padding: 16px 20px;
  color: var(--success-text);
}

.result-error {
  background: var(--error-bg);
  border: 1px solid var(--error-border);
  border-radius: var(--radius);
  padding: 16px 20px;
  color: var(--error-text);
  font-size: 13px;
}

.result-error .result-label {
  font-weight: 600;
  margin-bottom: 4px;
}

.code-block {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 14px 16px;
  font-family: "SFMono-Regular", "SF Mono", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 12.5px;
  color: var(--text);
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-all;
}

/* ── Stat grid ────────────────────────────────────────────── */

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 12px;
}

.stat-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  text-align: center;
}

.stat-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: 4px;
}

.stat-label {
  font-size: 11.5px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 500;
}

/* ── Key-value table ──────────────────────────────────────── */

.kv-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
}

.kv-table tr + tr td {
  border-top: 1px solid var(--border);
}

.kv-table td {
  padding: 9px 4px;
  vertical-align: top;
}

.kv-table td:first-child {
  font-weight: 500;
  color: var(--muted);
  width: 140px;
  padding-right: 16px;
}

.kv-table a {
  color: var(--primary);
  text-decoration: none;
}

.kv-table a:hover {
  color: var(--primary-hover);
  text-decoration: underline;
}

/* ── Responsive ───────────────────────────────────────────── */

@media (max-width: 640px) {
  /* ── Topbar ── */
  .topbar {
    padding: 0 12px;
    gap: 10px;
  }

  /* Hide the text label so breadcrumb + analytics fit on narrow screens */
  .topbar-logo-text {
    display: none;
  }

  .topbar-analytics-link {
    font-size: 12px;
    padding: 4px 8px;
    white-space: nowrap;
  }

  /* ── Sidebar: fixed overlay drawer instead of flex child ── */
  .sidebar {
    position: fixed;
    top: 52px;
    left: 0;
    height: calc(100vh - 52px);
    width: 220px;
    z-index: 50;
    /* Switch from width-based to transform-based open/close */
    transform: translateX(0);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
    box-shadow: 4px 0 24px rgba(0, 0, 0, 0.4);
    border-right: 1px solid var(--border);
    overflow-y: auto;
  }

  .sidebar--closed {
    /* Keep width intact; hide by sliding off-screen */
    width: 220px;
    transform: translateX(-100%);
    box-shadow: none;
    border-right: none;
  }

  /* ── Sidebar toggle: fixed so it's always reachable ── */
  .sidebar-toggle {
    position: fixed;
    top: calc(52px + 10px);
    left: 10px;
    z-index: 51; /* above the sidebar overlay */
  }

  /* Push sidebar content below the fixed toggle button.
     Button occupies top: 10px–38px relative to the sidebar top (62px–90px viewport),
     so 48px of top padding clears it with a small gap. */
  .sidebar-content {
    padding-top: 48px;
  }

  /* ── Home layout: single column, sidebar no longer a flex child ── */
  .home-layout {
    display: block;
  }

  /* ── Hero / centered search ── */
  .no-tags-area {
    min-height: calc(100vh - 52px);
    padding: 0 16px;
  }

  .home-hero {
    padding: 0;
    max-width: 100%;
  }

  .home-title {
    font-size: 24px;
  }

  .home-subtitle {
    font-size: 14px;
  }

  .search-wrap {
    max-width: 100%;
    margin: 20px 0 0;
  }

  /* ── Tags-active: compact search bar at top ──
     Left padding clears the fixed toggle button (10px left + 28px wide + 10px gap = 48px) */
  .tags-active .no-tags-area {
    padding: 12px 12px 0 48px;
  }

  .tags-active .home-hero {
    padding: 0;
    text-align: left;
  }

  .tags-active .search-wrap {
    margin: 0;
  }

  /* ── Tool grid ── */
  .tags-area {
    padding: 12px 12px 32px;
  }

  .tool-grid {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 0; /* tags-area already provides the outer padding */
  }

  /* ── Tool pages ── */
  .tool-page-header {
    padding: 16px;
  }

  .tool-page-body {
    padding: 16px;
  }

  .card {
    padding: 16px;
  }
}