/* ─── Theme variables ─────────────────────────────────────────────────────── */
:root {
  --bg:            #f8fafc;
  --surface:       #ffffff;
  --surface-2:     #f1f5f9;
  --border:        #e2e8f0;
  --text-1:        #0f172a;
  --text-2:        #475569;
  --text-3:        #94a3b8;
  --accent:        #6366f1;
  --accent-hover:  #4f46e5;
  --accent-muted:  #eef2ff;
  --danger:        #ef4444;
  --danger-muted:  #fef2f2;
  --danger-border: #fecaca;
  --success:       #22c55e;
  --success-muted: #f0fdf4;
  --warn-muted:    #fffbeb;
  --shadow-sm:     0 1px 3px rgba(0,0,0,.07), 0 1px 2px rgba(0,0,0,.04);
  --shadow:        0 4px 12px rgba(0,0,0,.08), 0 2px 4px rgba(0,0,0,.04);
  --shadow-lg:     0 10px 30px rgba(0,0,0,.10), 0 4px 8px rgba(0,0,0,.05);
  --radius:        14px;
  --radius-sm:     10px;
  --radius-xs:     7px;
  --transition:    0.18s ease;
}

html.dark {
  --bg:            #0d1117;
  --surface:       #161b22;
  --surface-2:     #21262d;
  --border:        #30363d;
  --text-1:        #e6edf3;
  --text-2:        #8b949e;
  --text-3:        #484f58;
  --accent:        #818cf8;
  --accent-hover:  #6366f1;
  --accent-muted:  #1e1b4b;
  --danger:        #f87171;
  --danger-muted:  #2d1515;
  --danger-border: #5c1a1a;
  --success:       #4ade80;
  --success-muted: #052e16;
  --warn-muted:    #1c1a09;
  --shadow-sm:     0 1px 3px rgba(0,0,0,.4);
  --shadow:        0 4px 12px rgba(0,0,0,.5);
  --shadow-lg:     0 10px 30px rgba(0,0,0,.6);
}

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

html { color-scheme: light; }
html.dark { color-scheme: dark; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text-1);
  min-height: 100vh;
  transition: background var(--transition), color var(--transition);
  -webkit-font-smoothing: antialiased;
}

/* ─── Header ──────────────────────────────────────────────────────────────── */
.app-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  height: 58px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(8px);
  transition: background var(--transition), border-color var(--transition);
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.header-logo {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  border-radius: 7px;
  display: block;
}

.app-header h1 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-1);
  letter-spacing: -0.01em;
}

.header-right { display: flex; align-items: center; gap: 8px; }

/* ─── Theme toggle ────────────────────────────────────────────────────────── */
.theme-toggle {
  width: 36px; height: 36px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text-2);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background var(--transition), border-color var(--transition), color var(--transition);
  flex-shrink: 0;
}
.theme-toggle:hover { background: var(--border); color: var(--text-1); }
.theme-toggle .icon-sun { display: none; }
.theme-toggle .icon-moon { display: block; }
html.dark .theme-toggle .icon-sun { display: block; }
html.dark .theme-toggle .icon-moon { display: none; }

/* ─── Buttons ─────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-xs);
  font-size: 13px; font-weight: 500;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background var(--transition), color var(--transition),
              border-color var(--transition), box-shadow var(--transition);
  text-decoration: none;
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent); color: #fff; border-color: var(--accent);
}
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn-primary:disabled { opacity: .5; cursor: not-allowed; }

.btn-ghost {
  background: transparent; color: var(--text-2); border-color: var(--border);
}
.btn-ghost:hover { background: var(--surface-2); color: var(--text-1); }

.btn-danger {
  background: transparent; color: var(--danger); border-color: var(--danger-border);
}
.btn-danger:hover { background: var(--danger-muted); }

.btn-sm { padding: 4px 10px; font-size: 12px; border-radius: 6px; }

/* ─── Cards / surfaces ────────────────────────────────────────────────────── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: background var(--transition), border-color var(--transition);
}

/* ─── Tables ──────────────────────────────────────────────────────────────── */
.table-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: background var(--transition), border-color var(--transition);
}
table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
thead {
  background: var(--surface-2);
  border-bottom: 1px solid var(--border);
}
th {
  padding: 10px 16px;
  text-align: left;
  font-weight: 600;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--text-3);
  white-space: nowrap;
}
td {
  padding: 11px 16px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
  color: var(--text-1);
  transition: background var(--transition);
}
tr:last-child td { border-bottom: none; }
tbody tr:hover td { background: var(--surface-2); }

/* ─── Badges ──────────────────────────────────────────────────────────────── */
.badge {
  display: inline-flex; align-items: center;
  padding: 2px 9px; border-radius: 20px;
  font-size: 11.5px; font-weight: 500;
}
.badge-active  { background: var(--success-muted); color: var(--success); }
.badge-disabled { background: var(--danger-muted);  color: var(--danger);  }
.badge-admin   { background: var(--accent-muted);   color: var(--accent);  margin-left: 6px; }

/* ─── Form inputs ─────────────────────────────────────────────────────────── */
input[type="email"], input[type="text"] {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  padding: 8px 12px;
  font-size: 13.5px;
  color: var(--text-1);
  outline: none;
  transition: border-color var(--transition), background var(--transition);
  width: 100%;
}
input[type="email"]:focus, input[type="text"]:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(99,102,241,.15);
}
input::placeholder { color: var(--text-3); }

/* ─── Toast ───────────────────────────────────────────────────────────────── */
.toast {
  position: fixed; bottom: 24px; right: 24px;
  background: var(--text-1); color: var(--bg);
  padding: 11px 18px; border-radius: var(--radius-xs);
  font-size: 13.5px; font-weight: 500;
  opacity: 0; pointer-events: none;
  transform: translateY(6px);
  transition: opacity .25s ease, transform .25s ease;
  z-index: 100;
  box-shadow: var(--shadow);
}
.toast.show { opacity: 1; transform: translateY(0); }

/* ─── Spinner ─────────────────────────────────────────────────────────────── */
.spinner {
  width: 32px; height: 32px;
  border: 2.5px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin .7s linear infinite;
  margin: 0 auto 14px;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ─── Error / empty states ────────────────────────────────────────────────── */
.state-box {
  text-align: center; padding: 56px 24px; color: var(--text-3);
}
.state-box h3 { font-size: 16px; font-weight: 600; margin-bottom: 6px; color: var(--text-2); }
.state-box p  { font-size: 13.5px; }

.alert {
  border-radius: var(--radius-xs);
  padding: 12px 16px;
  font-size: 13.5px;
  margin-bottom: 16px;
}
.alert-error {
  background: var(--danger-muted);
  border: 1px solid var(--danger-border);
  color: var(--danger);
}

/* ─── Results meta (overridden per-page if needed) ───────────────────────── */
/* app.html defines its own .results-meta without margin-left:auto */

/* ─── Theme init (no FOUC) ────────────────────────────────────────────────── */
/* Applied via inline <script> before first paint — see each page */