/* FN Shipping — shared visual theme (dashboard, login, docs, admin) */
:root {
  --fn-bg: #050a14;
  --fn-panel: rgba(15, 26, 46, 0.72);
  --fn-panel-solid: #0f1a2e;
  --fn-text: #f0f4fc;
  --fn-muted: #8b9cb8;
  --fn-gold: #e4b85a;
  --fn-gold-dim: rgba(228, 184, 90, 0.14);
  --fn-gold-glow: rgba(228, 184, 90, 0.35);
  --fn-line: rgba(255, 255, 255, 0.07);
  --fn-line-strong: rgba(255, 255, 255, 0.12);
  --fn-ok: #42d392;
  --fn-warn: #f5c14a;
  --fn-err: #ff7b7b;
  --fn-mono: "JetBrains Mono", ui-monospace, Menlo, Consolas, monospace;
  --fn-sans: "DM Sans", "Segoe UI", system-ui, sans-serif;
  --fn-radius: 18px;
  --fn-radius-sm: 12px;
  --fn-shadow-sm: 0 8px 24px rgba(0, 0, 0, 0.25);
}

.fn-page {
  font-family: var(--fn-sans);
  -webkit-font-smoothing: antialiased;
}

.fn-bg-mesh {
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(228, 184, 90, 0.12), transparent 55%),
    radial-gradient(ellipse 60% 40% at 100% 50%, rgba(66, 211, 146, 0.06), transparent 50%),
    linear-gradient(180deg, #050a14 0%, #071018 40%, #050a14 100%);
  pointer-events: none;
}

.fn-bg-grid {
  position: fixed;
  inset: 0;
  z-index: -1;
  opacity: 0.32;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, black, transparent);
  pointer-events: none;
}

.fn-topbar {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 0.85rem 1.15rem;
  background: var(--fn-panel);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--fn-line);
  border-radius: var(--fn-radius);
  box-shadow: var(--fn-shadow-sm);
}

.fn-brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.fn-brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: linear-gradient(145deg, var(--fn-gold-dim), rgba(255, 255, 255, 0.04));
  border: 1px solid var(--fn-line-strong);
  display: grid;
  place-items: center;
  overflow: hidden;
}

.fn-brand-mark img {
  width: 28px;
  height: 28px;
  object-fit: contain;
}

.fn-eyebrow {
  color: var(--fn-gold);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-weight: 700;
}

.fn-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.55rem 1rem;
  border-radius: var(--fn-radius-sm);
  border: 1px solid var(--fn-line-strong);
  background: rgba(255, 255, 255, 0.03);
  color: var(--fn-text);
  text-decoration: none;
  cursor: pointer;
  font: inherit;
  font-weight: 500;
  font-size: 0.88rem;
  transition: background 0.2s, border-color 0.2s, transform 0.15s;
}

.fn-btn:hover {
  background: rgba(255, 255, 255, 0.07);
  border-color: rgba(255, 255, 255, 0.18);
  transform: translateY(-1px);
}

.fn-btn-gold {
  background: linear-gradient(135deg, #e8c066 0%, #d4a84b 50%, #c9983f 100%);
  color: #0a0f18;
  border-color: transparent;
  font-weight: 700;
  box-shadow: 0 4px 20px var(--fn-gold-glow);
}

.fn-btn-gold:hover {
  background: linear-gradient(135deg, #f0cc78 0%, #e4b85a 100%);
}

.fn-chip {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.28rem 0.65rem;
  border-radius: 999px;
  border: 1px solid var(--fn-line);
  color: var(--fn-muted);
  background: rgba(255, 255, 255, 0.03);
}

.fn-footer-legal {
  margin-top: 2rem;
  padding: 1.25rem 0;
  border-top: 1px solid var(--fn-line);
  text-align: center;
  color: var(--fn-muted);
  font-size: 0.78rem;
  line-height: 1.65;
  max-width: 52rem;
  margin-left: auto;
  margin-right: auto;
}

.fn-footer-legal a {
  color: var(--fn-gold);
}

/* Docs: upgrade app-bar when body has fn-docs */
body.fn-docs .app-bar {
  background: var(--fn-panel);
  backdrop-filter: blur(16px);
  border: 1px solid var(--fn-line);
  border-radius: var(--fn-radius);
  padding: 1rem 1.15rem;
  box-shadow: var(--fn-shadow-sm);
}

body.fn-docs .app-btn {
  border-radius: var(--fn-radius-sm);
  transition: background 0.2s, transform 0.15s;
}

body.fn-docs .app-btn:hover {
  background: rgba(255, 255, 255, 0.06);
  transform: translateY(-1px);
}

body.fn-docs nav.toc a {
  transition: border-color 0.2s, background 0.2s;
}

body.fn-docs nav.toc a:hover {
  border-color: rgba(228, 184, 90, 0.4);
  background: var(--fn-gold-dim);
}

body.fn-docs #docs-gate {
  min-height: 40vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

body.fn-docs #docs-gate::after {
  content: "";
  display: block;
  width: 26px;
  height: 26px;
  margin: 1rem auto 0;
  border: 2px solid var(--fn-line-strong);
  border-top-color: var(--fn-gold);
  border-radius: 50%;
  animation: fn-spin 0.7s linear infinite;
}

@keyframes fn-spin {
  to { transform: rotate(360deg); }
}