:root {
  --bg: #f4f5f9;
  --surface: #ffffff;
  --border: #e3e5ec;
  --text: #1a1d29;
  --text-muted: #6b7086;
  --accent: #4f46e5;
  --accent-hover: #4338ca;
  --accent-contrast: #ffffff;
  --danger: #dc2626;
  --danger-bg: #fee2e2;
  --danger-text: #991b1b;
  --success-bg: #dcfce7;
  --success-text: #166534;
  --pending-bg: #fef3c7;
  --pending-text: #92400e;
  --shadow: 0 1px 2px rgba(20, 20, 43, 0.04), 0 8px 24px rgba(20, 20, 43, 0.06);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1117;
    --surface: #171a24;
    --border: #2a2e3d;
    --text: #e7e8ee;
    --text-muted: #9298b0;
    --accent: #818cf8;
    --accent-hover: #a5b0fb;
    --accent-contrast: #12141d;
    --danger: #f87171;
    --danger-bg: #3a1a1a;
    --danger-text: #fca5a5;
    --success-bg: #12301f;
    --success-text: #86efac;
    --pending-bg: #3a2f10;
    --pending-text: #fcd34d;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.35);
  }
}

* { box-sizing: border-box; }

body {
  font-family: -apple-system, "SF Pro Text", system-ui, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  margin: 0;
  min-height: 100vh;
}

main {
  max-width: 880px;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 4rem;
}

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand { display: flex; align-items: center; gap: 0.6rem; }
.brand-dot {
  width: 0.6rem;
  height: 0.6rem;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 20%, transparent);
}
.brand h1 { font-size: 1.05rem; font-weight: 700; margin: 0; }

nav { display: flex; gap: 0.5rem; }
.nav-link {
  padding: 0.4rem 0.8rem;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  color: var(--text);
  transition: background 0.15s ease;
}
.nav-link:hover { background: var(--border); }
.nav-link-ghost { color: var(--text-muted); }

.page-header { margin-bottom: 1.25rem; }
.page-header h2 { margin: 0 0 0.25rem; font-size: 1.4rem; }
.muted { color: var(--text-muted); font-size: 0.92rem; margin: 0.25rem 0; }
.muted-link { margin-top: 1rem; }
.muted-link a { color: var(--accent); text-decoration: none; font-size: 0.92rem; }
.muted-link a:hover { text-decoration: underline; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow);
  padding: 1.25rem 1.4rem;
  margin-bottom: 1.25rem;
}
.card h2 { margin-top: 0; font-size: 1.05rem; }
.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}
.card-header h2 { margin-bottom: 0; }

form.card { display: flex; flex-direction: column; gap: 1rem; max-width: 360px; }
label { display: flex; flex-direction: column; gap: 0.35rem; font-size: 0.88rem; color: var(--text-muted); }
input[type="text"], input[type="email"], input[type="password"] {
  font: inherit;
  padding: 0.55rem 0.7rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
}
input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 22%, transparent);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.55rem 1rem;
  border-radius: 8px;
  border: 1px solid transparent;
  font: inherit;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s ease, border-color 0.15s ease, opacity 0.15s ease;
}
.btn-primary { background: var(--accent); color: var(--accent-contrast); }
.btn-primary:hover { background: var(--accent-hover); }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--border); }
.btn-ghost:hover { background: var(--border); }
.btn-danger { background: var(--danger-bg); color: var(--danger-text); }
.btn-danger:hover { opacity: 0.85; }
.btn-sm { padding: 0.35rem 0.7rem; font-size: 0.82rem; }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
th, td { text-align: left; padding: 0.6rem 0.7rem; border-bottom: 1px solid var(--border); }
th {
  color: var(--text-muted);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: 600;
}
tbody tr:hover { background: color-mix(in srgb, var(--accent) 5%, transparent); }
td.empty { color: var(--text-muted); text-align: center; padding: 1.5rem 0; }
td.actions { display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: center; border-bottom: none; }
td.actions form { margin: 0; display: inline-flex; }

.badge {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: capitalize;
}
.badge-pending { background: var(--pending-bg); color: var(--pending-text); }
.badge-approved, .badge-active { background: var(--success-bg); color: var(--success-text); }
.badge-rejected, .badge-revoked { background: var(--danger-bg); color: var(--danger-text); }

ul.flashes { list-style: none; padding: 0; margin: 0 0 1.25rem; display: flex; flex-direction: column; gap: 0.5rem; }
.flash { padding: 0.65rem 0.9rem; border-radius: 10px; font-size: 0.9rem; }
.flash-error { background: var(--danger-bg); color: var(--danger-text); }
.flash-success { background: var(--success-bg); color: var(--success-text); }

.status-pending { color: var(--pending-text); }
.status-active { color: var(--success-text); }
.status-revoked { color: var(--danger-text); }