/* ── Theme variables ──────────────────────────────────────────────────── */

:root {
  --bg:          #ffffff;
  --bg-subtle:   #f6f8fa;
  --bg-inset:    #f0f2f4;
  --border:      #d0d7de;
  --border-muted:#e1e4e8;
  --text:        #24292f;
  --text-muted:  #57606a;
  --text-faint:  #8c959f;
  --accent:      #0969da;
  --accent-bg:   #dbeafe;
  --green:       #1a7f37;
  --green-bg:    #d1fae5;
  --green-border:#a7f3d0;
  --red:         #cf222e;
  --orange:      #9a6700;
  --orange-bg:   #fff8c5;
  --orange-border:#e3b341;
  --code-bg:     #f6f8fa;
  --code-text:   #24292f;
  --code-keyword:#0550ae;
  --code-var:    #953800;
  --shadow:      0 1px 3px rgba(0,0,0,.08);
}

[data-theme="dark"] {
  --bg:          #0d1117;
  --bg-subtle:   #161b22;
  --bg-inset:    #1c2128;
  --border:      #30363d;
  --border-muted:#21262d;
  --text:        #e6edf3;
  --text-muted:  #8b949e;
  --text-faint:  #6e7681;
  --accent:      #58a6ff;
  --accent-bg:   #1f3a5f;
  --green:       #3fb950;
  --green-bg:    #12261e;
  --green-border:#238636;
  --red:         #f85149;
  --orange:      #d29922;
  --orange-bg:   #2d2000;
  --orange-border:#9e6a03;
  --code-bg:     #161b22;
  --code-text:   #e6edf3;
  --code-keyword:#79c0ff;
  --code-var:    #f0883e;
  --shadow:      0 1px 3px rgba(0,0,0,.4);
}

/* ── Reset & base ─────────────────────────────────────────────────────── */

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 14px;
  line-height: 1.5;
  background: var(--bg);
  color: var(--text);
  transition: background .15s, color .15s;
}

/* ── Header ───────────────────────────────────────────────────────────── */

.site-header {
  background: var(--bg-subtle);
  border-bottom: 1px solid var(--border);
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header .brand { display: flex; align-items: baseline; gap: 6px; }
.site-header .brand-name { font-size: 16px; font-weight: 600; }
.site-header .brand-sub { font-size: 13px; color: var(--text-muted); }

.header-links { display: flex; align-items: center; gap: 16px; }
.header-links a {
  font-size: 13px;
  color: var(--accent);
  text-decoration: none;
}
.header-links a:hover { text-decoration: underline; }

.theme-toggle {
  background: var(--bg-inset);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 4px 10px;
  font-size: 12px;
  color: var(--text-muted);
  cursor: pointer;
  white-space: nowrap;
}
.theme-toggle:hover { border-color: var(--text-faint); color: var(--text); }

/* ── Layout ───────────────────────────────────────────────────────────── */

.page { max-width: 860px; margin: 0 auto; padding: 24px 20px 60px; }

/* ── Tabs ─────────────────────────────────────────────────────────────── */

.tabs {
  display: flex;
  border-bottom: 1px solid var(--border);
  margin-bottom: 20px;
  gap: 0;
}

.tab-btn {
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  cursor: pointer;
  transition: color .1s, border-color .1s;
}
.tab-btn:hover { color: var(--text); }
.tab-btn.active {
  color: var(--text);
  border-bottom-color: var(--accent);
}

.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ── Cards (form sections) ────────────────────────────────────────────── */

.card {
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 12px;
}

.card-title {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .4px;
  color: var(--text-muted);
  margin-bottom: 12px;
}

/* ── Grid helpers ─────────────────────────────────────────────────────── */

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 10px; }
.platform-row { display: grid; grid-template-columns: 1fr 28px 1fr; gap: 8px; align-items: end; }
.platform-arrow { font-size: 18px; color: var(--text-faint); text-align: center; padding-bottom: 6px; }

@media (max-width: 560px) {
  .grid-2, .grid-3, .platform-row { grid-template-columns: 1fr; }
  .platform-arrow { display: none; }
}

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

.field { display: flex; flex-direction: column; gap: 4px; }

.field label {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .3px;
}

.field label .req { color: var(--red); margin-left: 2px; }

.field input[type="text"],
.field input[type="url"],
.field select {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 10px;
  font-size: 13px;
  color: var(--text);
  width: 100%;
  appearance: none;
  -webkit-appearance: none;
}

.field select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%238c959f' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 8px center;
  padding-right: 28px;
}

.field input:focus, .field select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-bg);
}

.field input:disabled, .field select:disabled {
  opacity: .4;
  cursor: not-allowed;
}

.field .hint {
  font-size: 11px;
  color: var(--text-faint);
  margin-top: 1px;
}

/* ── Checkboxes ───────────────────────────────────────────────────────── */

.checkbox-group {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 4px;
}

.checkbox-item {
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  font-size: 13px;
  color: var(--text);
  user-select: none;
}

.checkbox-item input[type="checkbox"] {
  width: 14px;
  height: 14px;
  accent-color: var(--accent);
  cursor: pointer;
}

.checkbox-item .badge {
  font-size: 10px;
  padding: 1px 6px;
  border-radius: 10px;
  font-weight: 600;
}
.badge-recommended { background: var(--green-bg); color: var(--green); border: 1px solid var(--green-border); }
.badge-warning { background: var(--orange-bg); color: var(--orange); border: 1px solid var(--orange-border); }

/* ── Notes / info boxes ───────────────────────────────────────────────── */

.note {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 10px;
  line-height: 1.5;
}

.info-note {
  font-size: 12px;
  color: var(--text-muted);
  background: var(--bg-inset);
  border: 1px solid var(--border-muted);
  border-radius: 6px;
  padding: 8px 12px;
  margin-top: 6px;
}

.warning-banner {
  background: var(--orange-bg);
  border: 1px solid var(--orange-border);
  border-radius: 6px;
  padding: 10px 14px;
  font-size: 13px;
  color: var(--orange);
  margin-bottom: 16px;
  display: flex;
  gap: 8px;
  align-items: flex-start;
}

.inline-warning {
  background: var(--orange-bg);
  border: 1px solid var(--orange-border);
  border-radius: 6px;
  padding: 6px 10px;
  font-size: 12px;
  color: var(--orange);
  margin-top: 6px;
}

/* ── Collapsible sections ─────────────────────────────────────────────── */

.collapsible {
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 12px;
  overflow: hidden;
}

.collapsible-header {
  padding: 12px 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  user-select: none;
  transition: color .1s;
}
.collapsible-header:hover { color: var(--text); }

.collapsible-header .caret {
  font-size: 10px;
  transition: transform .15s;
  color: var(--text-faint);
}
.collapsible.open .collapsible-header .caret { transform: rotate(90deg); }
.collapsible-header .sub { font-size: 11px; font-weight: 400; color: var(--text-faint); margin-left: 2px; }

.collapsible-body {
  display: none;
  padding: 0 16px 16px;
  border-top: 1px solid var(--border-muted);
}
.collapsible.open .collapsible-body { display: block; padding-top: 14px; }

/* ── Hidden helper ────────────────────────────────────────────────────── */

.hidden { display: none !important; }

/* ── Output block ─────────────────────────────────────────────────────── */

.output-card {
  background: var(--bg-subtle);
  border: 1px solid var(--green-border);
  border-radius: 8px;
  padding: 16px;
  margin-top: 4px;
}

.output-title {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .4px;
  color: var(--green);
  margin-bottom: 14px;
}

.output-placeholder {
  font-size: 13px;
  color: var(--text-faint);
  text-align: center;
  padding: 24px 0;
}

.output-section { margin-bottom: 14px; }
.output-section:last-of-type { margin-bottom: 0; }

.output-label {
  font-size: 11px;
  color: var(--text-muted);
  margin-bottom: 5px;
  font-weight: 500;
}

.code-block {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 10px 12px;
  font-family: ui-monospace, SFMono-Regular, "Cascadia Code", Menlo, monospace;
  font-size: 12px;
  line-height: 1.7;
  color: var(--code-text);
  white-space: pre;
  overflow-x: auto;
}

.code-keyword { color: var(--code-keyword); }
.code-var     { color: var(--red); font-weight: 600; }
.code-placeholder { color: var(--red); font-style: italic; }
.code-cmd     { color: var(--code-keyword); }

.copy-row {
  display: flex;
  justify-content: flex-end;
  margin-top: 6px;
}

.btn-copy {
  background: var(--bg-inset);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 4px 12px;
  font-size: 12px;
  color: var(--text-muted);
  cursor: pointer;
  transition: border-color .1s, color .1s;
}
.btn-copy:hover { border-color: var(--text-faint); color: var(--text); }
.btn-copy.copied { color: var(--green); border-color: var(--green-border); }