/* ============================================================
   Resource Helper — shared stylesheet
   Used by every page in this project. Keep selectors generic
   so new pages can opt into the same look with minimal markup.
   ============================================================ */

:root {
  --color-bg: #f4f5f7;
  --color-surface: #ffffff;
  --color-border: #e2e4e9;
  --color-text: #1c1e21;
  --color-text-muted: #62666f;
  --color-accent: #2563eb;
  --color-accent-hover: #1d4ed8;
  --color-success: #16a34a;
  --color-success-bg: #ecfdf3;
  --color-error: #dc2626;
  --color-error-bg: #fef2f2;
  --shadow-card: 0 1px 2px rgba(16, 24, 40, 0.04), 0 8px 24px rgba(16, 24, 40, 0.06);
  --radius: 12px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #15161a;
    --color-surface: #1e2025;
    --color-border: #2c2f36;
    --color-text: #edeef0;
    --color-text-muted: #9a9ea7;
    --color-accent: #5b8def;
    --color-accent-hover: #7ba3f2;
    --color-success: #4ade80;
    --color-success-bg: #0f2a1b;
    --color-error: #f87171;
    --color-error-bg: #2a1414;
    --shadow-card: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.35);
  }
}

* {
  box-sizing: border-box;
}

html, body {
  height: 100%;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
}

/* Utility page layout: centered card, used by redirect/confirmation/etc. */
body.centered {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  padding: 40px 36px;
  max-width: 440px;
  width: 100%;
  text-align: center;
}

.card h1 {
  font-size: 1.25rem;
  margin: 0 0 8px;
}

.card p {
  margin: 0 0 4px;
  color: var(--color-text-muted);
}

.card .primary-message {
  color: var(--color-text);
  font-size: 1.05rem;
  margin-bottom: 12px;
}

.icon-badge {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 24px;
}

.icon-badge.success {
  background: var(--color-success-bg);
  color: var(--color-success);
}

.icon-badge.error {
  background: var(--color-error-bg);
  color: var(--color-error);
}

.icon-badge.loading {
  background: var(--color-bg);
  color: var(--color-text-muted);
}

.verify-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: 999px;
  margin-bottom: 16px;
}

.verify-status.valid {
  background: var(--color-success-bg);
  color: var(--color-success);
}

.verify-status.invalid {
  background: var(--color-error-bg);
  color: var(--color-error);
}

.detail-list {
  text-align: left;
  margin: 20px 0 0;
  padding: 16px 18px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  font-size: 0.9rem;
}

.detail-list dt {
  color: var(--color-text-muted);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-top: 10px;
}

.detail-list dt:first-child {
  margin-top: 0;
}

.detail-list dd {
  margin: 2px 0 0;
  font-weight: 600;
}

.timestamp {
  display: inline-block;
  margin-top: 16px;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* ---- Home/index page layout ---- */
.wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 56px 24px 80px;
}

.wrap header {
  margin-bottom: 40px;
}

.wrap h1 {
  font-size: 1.75rem;
  margin: 0 0 8px;
}

.wrap header p {
  color: var(--color-text-muted);
  margin: 0;
}

.page-list {
  display: grid;
  gap: 16px;
}

.page-card {
  display: block;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px 22px;
  text-decoration: none;
  color: inherit;
  box-shadow: var(--shadow-card);
  transition: transform 0.12s ease, border-color 0.12s ease;
}

.page-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-1px);
}

.page-card h2 {
  font-size: 1.05rem;
  margin: 0 0 6px;
  color: var(--color-accent);
}

.page-card p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.92rem;
}

.page-card code {
  font-size: 0.8rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 1px 6px;
}

footer.note {
  margin-top: 40px;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  text-align: center;
}

a {
  color: var(--color-accent);
}

a:hover {
  color: var(--color-accent-hover);
}