:root {
  --bg: #0b0d12;
  --bg-elevated: #11141b;
  --card: #151821;
  --card-hover: #181c26;
  --border: #242836;
  --border-light: #2e3346;
  --text: #eef0f5;
  --muted: #8b90a3;
  --muted-2: #5f6478;
  --accent: #7c6cf2;
  --accent-2: #00d9b5;
  --accent-soft: rgba(124, 108, 242, 0.12);
  --danger: #ff5d7a;
  --danger-soft: rgba(255, 93, 122, 0.12);
  --warn: #ffb02e;
  --radius: 14px;
  --radius-sm: 9px;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 24px -8px rgba(0, 0, 0, 0.5);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  background-image: radial-gradient(circle at 15% 0%, rgba(124, 108, 242, 0.08), transparent 40%),
    radial-gradient(circle at 85% 20%, rgba(0, 217, 181, 0.05), transparent 35%);
  background-attachment: fixed;
  color: var(--text);
  font-family: 'Tajawal', 'Segoe UI', Tahoma, Arial, sans-serif;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}
.mono { font-family: 'JetBrains Mono', ui-monospace, monospace; font-size: 12.5px; }
.small-text { font-size: 12px; color: var(--muted); }

.screen { min-height: 100vh; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 24px;
  margin: 16px auto;
  max-width: 920px;
  box-shadow: var(--shadow);
}
.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 4px;
  flex-wrap: wrap;
}
.card-head h2 { margin: 0; }

.login-card {
  max-width: 380px;
  margin-top: 12vh;
  display: flex;
  flex-direction: column;
  gap: 12px;
  text-align: center;
  align-items: center;
}
.login-icon {
  font-size: 40px;
  width: 72px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--accent-soft);
  margin-bottom: 4px;
}
.login-card input { text-align: center; }

h1 { margin: 0 0 4px; font-weight: 900; letter-spacing: -0.01em; }
h2 { font-weight: 700; font-size: 17px; }
.muted { color: var(--muted); margin: 0 0 12px; font-size: 14px; }

input, select, textarea, button {
  font-family: inherit;
  font-size: 14px;
  padding: 11px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text);
  width: 100%;
  transition: border-color 0.15s, background 0.15s;
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
  background: #14171f;
}
input::placeholder, textarea::placeholder { color: var(--muted-2); }

label { font-size: 12.5px; color: var(--muted); margin: 12px 0 5px; display: block; font-weight: 500; }
code {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  padding: 2px 6px;
  border-radius: 5px;
  font-size: 12px;
}
code.copyable { cursor: pointer; transition: background 0.15s, border-color 0.15s; }
code.copyable:hover { background: var(--accent-soft); border-color: var(--accent); }

button {
  background: linear-gradient(135deg, var(--accent), #6355d9);
  border: none;
  cursor: pointer;
  font-weight: 700;
  margin-top: 16px;
  transition: opacity 0.15s, transform 0.1s;
}
button:hover { opacity: 0.9; }
button:active { transform: scale(0.98); }
button.ghost {
  background: transparent;
  border: 1px solid var(--border-light);
  width: auto;
  margin: 0;
  color: var(--text);
  font-weight: 500;
}
button.ghost:hover { background: var(--card-hover); border-color: var(--accent); }
button.small { width: auto; padding: 7px 12px; margin: 0 2px 0 0; font-size: 12.5px; border-radius: 7px; }
button.danger { background: linear-gradient(135deg, var(--danger), #e0415e); }

.error { color: var(--danger); min-height: 1.2em; font-size: 13px; }

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 28px;
  border-bottom: 1px solid var(--border);
  background: rgba(17, 20, 27, 0.6);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 10;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand-icon { font-size: 22px; }
.brand h1 { font-size: 19px; margin: 0; }

.tabs {
  display: flex;
  gap: 6px;
  padding: 16px 28px 0;
  max-width: 920px;
  margin: 0 auto;
}
.tab-btn {
  width: auto;
  background: transparent;
  border: 1px solid transparent;
  margin-top: 0;
  color: var(--muted);
  padding: 9px 16px;
  font-weight: 600;
  font-size: 13.5px;
}
.tab-btn:hover { color: var(--text); background: var(--card-hover); }
.tab-btn.active { background: var(--accent-soft); color: var(--accent); border-color: rgba(124, 108, 242, 0.3); }
.tab-content { display: none; }
.tab-content.active { display: block; }

.stats-row {
  display: flex;
  gap: 12px;
  max-width: 920px;
  margin: 16px auto 0;
  flex-wrap: wrap;
}
.stat-card {
  flex: 1;
  min-width: 140px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: var(--shadow);
}
.stat-icon { font-size: 22px; }
.stat-value { font-size: 22px; font-weight: 900; line-height: 1.1; }
.stat-label { font-size: 12px; color: var(--muted); margin-top: 2px; }

table { width: 100%; border-collapse: collapse; margin-top: 12px; font-size: 13px; }
th, td { text-align: right; padding: 10px 8px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: 0.02em; }
tbody tr { transition: background 0.1s; }
tbody tr:hover { background: var(--card-hover); }
td.actions { white-space: nowrap; }

.empty-state { text-align: center; color: var(--muted); padding: 28px 0; font-size: 13.5px; }

.row { display: flex; gap: 12px; }
.row > div { flex: 1; }

.search-box { max-width: 260px; }
.filters { display: flex; gap: 8px; flex-wrap: wrap; }
.filters select { width: auto; max-width: 160px; }

.hint {
  color: var(--muted);
  font-size: 12.5px;
  margin: 10px 0 0;
  line-height: 1.8;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
}

.update-banner {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  background: rgba(255, 176, 46, 0.1);
  border: 1px solid rgba(255, 176, 46, 0.35);
  color: #ffcb70;
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  font-size: 13px;
  margin-bottom: 14px;
}
.update-banner strong { color: #fff; }

.badge { padding: 3px 10px; border-radius: 20px; font-size: 11.5px; font-weight: 700; }
.badge.active { background: rgba(0, 217, 181, 0.15); color: var(--accent-2); }
.badge.revoked { background: var(--danger-soft); color: var(--danger); }
.badge.expired { background: rgba(139, 144, 163, 0.18); color: var(--muted); }

.toasts {
  position: fixed;
  top: 18px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: center;
  pointer-events: none;
}
.toast {
  background: var(--card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  padding: 10px 18px;
  font-size: 13.5px;
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translateY(-8px);
  transition: opacity 0.2s, transform 0.2s;
}
.toast.show { opacity: 1; transform: translateY(0); }
.toast-success { border-color: rgba(0, 217, 181, 0.4); color: var(--accent-2); }
.toast-error { border-color: rgba(255, 93, 122, 0.4); color: var(--danger); }
.toast-info { border-color: var(--border-light); color: var(--text); }

@media (max-width: 640px) {
  header { padding: 14px 16px; }
  .tabs { padding: 12px 16px 0; }
  .card { margin: 12px 10px; padding: 18px 16px; }
  .stats-row { margin: 12px 10px 0; }
  .card-head { flex-direction: column; align-items: stretch; }
  .search-box { max-width: none; }
}