:root {
  color-scheme: light dark;
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --bg: #0f172a;
  --card-bg: rgba(15, 23, 42, 0.8);
  --text: #f8fafc;
  --muted: #94a3b8;
  --accent: #38bdf8;
  --danger: #ef4444;
  --success: #22c55e;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at top, #1e3a8a, #020617);
  color: var(--text);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.container {
  width: 100%;
  max-width: 1000px;
}

.container.admin-container {
  max-width: 1100px;
}

.card {
  background: var(--card-bg);
  border-radius: 24px;
  padding: 2rem;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(16px);
  text-align: center;
}

.gate-card {
  width: min(420px, 100%);
  margin: 0 auto;
}

.card h1 {
  margin-top: 0.5rem;
  font-size: 1.8rem;
  letter-spacing: 0.08em;
}

.logo {
  width: 90px;
  height: 90px;
  object-fit: contain;
}

.form-stack {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

label {
  color: var(--muted);
  text-align: left;
  font-size: 0.9rem;
}

input {
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 12px;
  padding: 0.75rem 1rem;
  background: rgba(15, 23, 42, 0.6);
  color: var(--text);
  font-size: 1rem;
}

button {
  border: none;
  border-radius: 999px;
  padding: 0.85rem 1rem;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  background: var(--accent);
  color: #0f172a;
  transition: transform 0.15s ease, opacity 0.2s ease;
}

button:hover {
  transform: translateY(-1px);
  opacity: 0.95;
}

.action-button {
  width: 100%;
  margin-top: 1.5rem;
}

.action-button.success {
  background: var(--success);
  color: #052e16;
}

.action-button.danger {
  background: var(--danger);
  color: #450a0a;
}

.link-button {
  width: 100%;
  margin-top: 0.75rem;
  background: transparent;
  border: 1px solid rgba(248, 250, 252, 0.2);
  color: var(--text);
}

.status-block {
  margin-top: 1.5rem;
  padding: 1rem;
  background: rgba(15, 23, 42, 0.6);
  border-radius: 16px;
}

.status-label {
  margin: 0;
  color: var(--muted);
}

.status-value {
  margin: 0.25rem 0 0;
  font-size: 1.3rem;
}

.feedback {
  min-height: 1.25rem;
  margin-top: 1rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.feedback.error {
  color: var(--danger);
}

.user-line {
  margin-top: 0.5rem;
  color: var(--muted);
}

.hint {
  font-size: 0.85rem;
  color: var(--muted);
}

/* Admin styles */
.admin-card {
  width: min(960px, 100%);
  margin: 0 auto;
  text-align: left;
}

.subtitle {
  margin-top: 0;
  color: var(--muted);
}

.tabs {
  display: flex;
  gap: 0.75rem;
  margin: 1.5rem 0;
}

.tab-button {
  flex: 1;
  background: rgba(56, 189, 248, 0.15);
  color: var(--text);
}

.tab-button.active {
  background: var(--accent);
  color: #0f172a;
}

.tab-panel.hidden {
  display: none;
}

.table-wrapper {
  overflow-x: auto;
  margin-top: 1rem;
}

table {
  width: 100%;
  border-collapse: collapse;
}

code.code-pill {
  display: inline-block;
  background: rgba(148, 163, 184, 0.2);
  padding: 0.25rem 0.5rem;
  border-radius: 999px;
  font-size: 0.9rem;
}

th,
td {
  padding: 0.75rem;
  text-align: left;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

th {
  color: var(--muted);
  font-weight: 500;
}

.pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 1rem;
}

.form-inline {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.form-inline input {
  flex: 1 1 200px;
}

.form-inline button {
  flex: 0 0 auto;
}

button.danger {
  background: rgba(239, 68, 68, 0.2);
  color: var(--danger);
}

.loading {
  text-align: center;
  color: var(--muted);
}

@media (max-width: 600px) {
  body {
    padding: 1rem;
    align-items: flex-start;
  }

  .card {
    padding: 1.5rem;
    width: 100%;
  }
}