/* ── share-tokens.css — brand tokens for share.refueler.io ──────────────────
   Single token source for all Share pages. Equivalent of global.css on
   refueler.io. Loaded via head.njk <link> on every Eleventy Share page and
   linked directly from frontend/index.html.
   Rule: no Share page may define its own :root token block.
   Token reference: REFUELER-BRIDGE.md § Design system
   Theme detection: document.documentElement.dataset.theme === 'carbon'
   Theme persistence: cookie rs-theme scoped to .refueler.io (30-day rolling)
   Paper is default. Carbon is user toggle only.
   ──────────────────────────────────────────────────────────────────────────── */

/* ── Brand tokens — Paper default ──────────────────────────────────────────── */
:root {
  --carbon:          #1A1A1A;
  --paper:           #F5F0E8;
  --gold:            #C8A96E;
  --gold-dim:        #9E8050;

  /* Paper mode (default) */
  --bg:              var(--paper);
  --fg:              var(--carbon);
  --fg-muted:        #5A5550;
  --fg-subtle:       #9A9590;
  --border:          rgba(26,26,26,0.12);
  --nav-bg:          #F5F0E8;
  --card-bg:         rgba(26,26,26,0.04);
  --card-border:     rgba(26,26,26,0.08);
  --input-bg:        #FFFFFF;
  --input-border:    rgba(26,26,26,0.18);
  --drop-border:     rgba(26,26,26,0.20);
  --drop-hover-bg:   rgba(26,26,26,0.03);
  --tag-bg:          rgba(26,26,26,0.07);
  --link-box-bg:     rgba(245,240,232,0.05);

  --radius:          6px;
  --mono:            'IBM Plex Mono', monospace;
  --sans:            'DM Sans', sans-serif;
  --display:         'Satoshi', 'DM Sans', sans-serif;
  --heading:         'Satoshi', 'DM Sans', sans-serif;
  --serif:           'Source Serif 4', Georgia, serif;

  /* Token aliases — DESIGN-TOKENS.md canonical names */
  --accent:          var(--gold);
  --inset-rule:      var(--border);
  --text-primary:    var(--fg);
  --text-secondary:  var(--fg-muted);
  --border-mid:      rgba(26,26,26,0.22);
  --surface:         rgba(26,26,26,0.04);

  /* Status colours */
  --c-amber:         #C8943A;
  --c-amber-bg:      rgba(200,148,58,0.08);
  --c-red:           #E05252;
  --c-red-bg:        rgba(224,82,82,0.08);
}

/* ── Carbon override ────────────────────────────────────────────────────────── */
[data-theme="carbon"] {
  --bg:              var(--carbon);
  --fg:              var(--paper);
  --fg-muted:        #B0AAA2;
  --fg-subtle:       #6A6560;
  --border:          rgba(245,240,232,0.10);
  --nav-bg:          #1A1A1A;
  --card-bg:         rgba(245,240,232,0.04);
  --card-border:     rgba(245,240,232,0.08);
  --input-bg:        #252525;
  --input-border:    rgba(245,240,232,0.18);
  --drop-border:     rgba(245,240,232,0.22);
  --drop-hover-bg:   rgba(245,240,232,0.03);
  --tag-bg:          rgba(245,240,232,0.08);
  --link-box-bg:     rgba(245,240,232,0.05);

  --inset-rule:      var(--gold);
  --text-primary:    var(--fg);
  --text-secondary:  var(--fg-muted);
  --border-mid:      rgba(245,240,232,0.22);
  --surface:         rgba(245,240,232,0.04);
}

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

html, body {
  min-height: 100%;
  background-color: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.6;
  font-weight: 300;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.35s ease, color 0.25s ease;
}

/* ── Site header ────────────────────────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--nav-bg);
  border-bottom: 1px solid var(--inset-rule);
  padding: 0 clamp(1.25rem, 4vw, 3rem);
  transition: background 0.35s ease, border-color 0.25s ease;
}
.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.wordmark {
  font-family: var(--display);
  font-weight: 600;
  font-size: 0.875rem;
  letter-spacing: 0.06em;
  color: var(--fg);
  text-decoration: none;
  white-space: nowrap;
  text-transform: none;
}
.wordmark-divider {
  font-weight: 300;
  opacity: 0.3;
  margin: 0 0.5rem;
}
.wordmark-section {
  font-weight: 400;
  letter-spacing: 0.08em;
  opacity: 0.55;
  text-transform: none;
}
.site-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}
.site-nav a {
  font-family: var(--display);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-muted);
  text-decoration: none;
  transition: color 0.2s;
}
.site-nav a:hover { color: var(--fg); }
.site-nav a.active { color: var(--fg); }
.theme-pill {
  font-family: var(--display);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 0.35rem 0.85rem;
  background: transparent;
  color: var(--fg-muted);
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s;
  white-space: nowrap;
  user-select: none;
}
.theme-pill:hover {
  border-color: var(--fg-muted);
  color: var(--fg);
}

/* ── Shared components ──────────────────────────────────────────────────────── */
.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 24px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.03em;
  padding: 10px 20px;
  transition: opacity 0.2s, background 0.2s;
}
.btn:disabled { opacity: 0.35; cursor: not-allowed; }
.btn-primary { background: var(--fg); color: var(--bg); }
.btn-primary:hover:not(:disabled) { opacity: 0.85; }
.btn-ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--fg-muted);
}
.btn-ghost:hover:not(:disabled) { border-color: var(--fg-muted); color: var(--fg); }
.btn-full { width: 100%; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field label {
  font-size: 11px;
  font-weight: 500;
  color: var(--fg-subtle);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
input[type="text"],
input[type="password"],
input[type="email"] {
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: var(--radius);
  color: var(--fg);
  font-family: var(--mono);
  font-size: 13px;
  padding: 10px 14px;
  width: 100%;
  outline: none;
  transition: border-color 0.2s;
}
input[type="text"]:focus,
input[type="password"]:focus,
input[type="email"]:focus { border-color: var(--fg-muted); }
.tag {
  display: inline-block;
  background: var(--tag-bg);
  color: var(--fg);
  font-family: var(--mono);
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 3px;
  letter-spacing: 0.03em;
}

/* ── Utility ────────────────────────────────────────────────────────────────── */
.muted      { color: var(--fg-muted); }
.subtle     { color: var(--fg-subtle); }
.mono       { font-family: var(--mono); }
.small      { font-size: 12px; }
.cap-warn   { color: #D97706; font-size: 13px; line-height: 1.5; }
.success-txt{ color: #27AE60; }
.danger-txt { color: #C0392B; }
.hidden     { display: none !important; }
.flex-row   { display: flex; align-items: center; gap: 10px; }
.mt4        { margin-top: 4px; }
.mt8        { margin-top: 8px; }
.mt12       { margin-top: 12px; }
.mt16       { margin-top: 16px; }

/* ── Site footer ────────────────────────────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--inset-rule);
  padding: 20px clamp(1.25rem, 4vw, 3rem);
  margin-top: auto;
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.footer-note {
  font-size: 0.65rem;
  letter-spacing: 0.06em;
  color: var(--fg-subtle);
  font-family: var(--display);
}
.footer-links { display: flex; gap: 1.5rem; }
.footer-links a {
  font-family: var(--display);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-subtle);
  text-decoration: none;
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--fg); }

/* ── Status banner ──────────────────────────────────────────────────────────── */
.status-banner {
  position: sticky;
  top: 56px;
  z-index: 90;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  font-size: 13px;
  line-height: 1.4;
  border-bottom: 1px solid transparent;
  animation: banner-in 0.25s ease;
}
@keyframes banner-in {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}
.status-banner[data-state="maintenance"] {
  background: color-mix(in srgb, #C8A951 12%, var(--bg));
  border-color: color-mix(in srgb, #C8A951 30%, transparent);
  color: var(--fg);
}
.status-banner[data-state="degraded"] {
  background: color-mix(in srgb, #C0392B 10%, var(--bg));
  border-color: color-mix(in srgb, #C0392B 25%, transparent);
  color: var(--fg);
}
.status-banner-icon { flex-shrink: 0; font-size: 15px; }
.status-banner-text { flex: 1; }
.status-banner-link {
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 2px;
  white-space: nowrap;
}
.status-banner-link:hover { opacity: 0.75; }
.status-banner-dismiss {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--fg-subtle);
  font-size: 14px;
  line-height: 1;
  padding: 0;
  flex-shrink: 0;
}
.status-banner-dismiss:hover { color: var(--fg); }
.status-banner.hidden { display: none; }

/* ── Responsive ─────────────────────────────────────────────────────────────── */
@media (max-width: 600px) {
  .shell { padding: 32px 16px 60px; }
  .site-nav { gap: 1.25rem; }
  .site-nav a:not(:last-of-type) { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  .progress-bar, .btn, .slider, .slider::before,
  html, body { transition: none; }
}