/*
 * RBClauneck site styles.
 * Every value here derives from DESIGN.md (White · Silver · Transparent).
 * Do not hard-code colors in components — use these tokens.
 */

:root {
  --color-white: #ffffff;
  --color-white-soft: #f6f7f9;
  --color-silver-100: #e9ebee;
  --color-silver-200: #d6d9de;
  --color-silver-300: #c0c4cc;
  --color-silver-500: #9aa0a6;
  --color-silver-700: #5f636a;
  --color-ink: #2b2e33;

  --glass-fill: rgba(255, 255, 255, 0.55);
  --glass-border: rgba(255, 255, 255, 0.65);
  --glass-shadow: rgba(120, 125, 135, 0.18);
  --silver-gradient: linear-gradient(135deg, #ffffff 0%, #d6d9de 45%, #c0c4cc 100%);

  --status-gain: #4f9d6b;
  --status-loss: #b06a6a;

  --radius-card: 16px;
  --radius-control: 10px;
  --shadow-soft: 0 8px 30px var(--glass-shadow);

  --font-stack: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-stack);
  color: var(--color-silver-700);
  line-height: 1.6;
  /* White base with a soft silver wash, per DESIGN.md §1. */
  background:
    radial-gradient(1200px 600px at 80% -10%, var(--color-silver-100), transparent 60%),
    var(--color-white-soft);
  min-height: 100vh;
}

.wrap {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---- Header ---- */
.site-header {
  padding: 48px 0 24px;
}

.site-header__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--color-ink);
}

/* ---- Nav ---- */
.site-nav {
  display: inline-flex;
  gap: 20px;
}

.site-nav a {
  color: var(--color-silver-700);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.site-nav a:hover {
  color: var(--color-ink);
}

.site-nav a[aria-current="page"] {
  color: var(--color-ink);
  border-bottom: 1px solid var(--color-silver-300);
  padding-bottom: 2px;
}

.brand-mark {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: var(--silver-gradient);
  border: 1px solid var(--color-silver-300);
  box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.8);
}

/* ---- Hero ---- */
.hero {
  padding: 32px 0 16px;
}

.hero h1 {
  font-size: 2.5rem;
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--color-ink);
  font-weight: 600;
  margin: 0 0 12px;
}

.hero p {
  font-size: 1.25rem;
  color: var(--color-silver-700);
  margin: 0;
  max-width: 60ch;
}

/* ---- Section heading ---- */
.section-head {
  margin: 48px 0 16px;
}

.section-head h2 {
  font-size: 1.75rem;
  color: var(--color-ink);
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0 0 4px;
}

.section-head .meta {
  color: var(--color-silver-500);
  font-size: 0.875rem;
}

/* ---- Glass panel (DESIGN.md §3) ---- */
.glass {
  background: var(--glass-fill);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border: 1px solid var(--color-silver-200);
  border-top-color: var(--glass-border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-soft);
}

/* Fallback where backdrop-filter is unsupported (DESIGN.md §3). */
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .glass { background: rgba(255, 255, 255, 0.9); }
}

/* ---- Economy Showcase plugin ---- */
.showcase {
  padding: 24px;
}

.wallet-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.wallet-card {
  background: var(--color-white);
  border: 1px solid var(--color-silver-200);
  border-radius: var(--radius-control);
  padding: 16px;
  transition: transform 180ms ease-out, background-color 180ms ease-out;
}

.wallet-card:hover {
  transform: translateY(-2px);
  background: var(--color-white-soft);
}

.wallet-card__top {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}

.wallet-card__dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--silver-gradient);
  border: 1px solid var(--color-silver-300);
  flex: 0 0 auto;
}

.wallet-card__name {
  color: var(--color-silver-700);
  font-size: 0.875rem;
}

.wallet-card__balance {
  color: var(--color-ink);
  font-size: 1.75rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.wallet-card__delta {
  font-size: 0.875rem;
  margin-top: 4px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* Functional status color only — DESIGN.md §6. Paired with a +/- sign. */
.wallet-card__delta.is-gain { color: var(--status-gain); }
.wallet-card__delta.is-loss { color: var(--status-loss); }
.wallet-card__delta.is-flat { color: var(--color-silver-500); }

.showcase__empty {
  color: var(--color-silver-500);
  text-align: center;
  padding: 24px;
}

/* ---- API usage page ---- */
.api-block {
  padding: 24px;
  margin-bottom: 24px;
}

.api-block p {
  margin: 0 0 16px;
  color: var(--color-silver-700);
}

.api-block code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  background: var(--color-silver-100);
  border-radius: 4px;
  padding: 1px 5px;
  font-size: 0.9em;
}

.api-code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--color-ink);
  background: var(--color-white);
  border: 1px solid var(--color-silver-200);
  border-radius: var(--radius-control);
  padding: 16px;
  margin: 0;
  overflow-x: auto;
}

.api-code code {
  background: none;
  padding: 0;
  font-size: inherit;
}

/* ---- Footer ---- */
.site-footer {
  margin: 64px 0 48px;
  padding-top: 24px;
  border-top: 1px solid var(--color-silver-200);
  color: var(--color-silver-500);
  font-size: 0.875rem;
}

.site-footer a { color: var(--color-silver-700); }

/* ---- Focus + motion (DESIGN.md §7, §8) ---- */
a:focus-visible,
.wallet-card:focus-visible {
  outline: 2px solid var(--color-silver-500);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  .wallet-card { transition: none; }
  .wallet-card:hover { transform: none; }
}