*,
*::before,
*::after {
  box-sizing: border-box;
}

:root {
  color-scheme: dark;
  --bg: #060816;
  --bg-elevated: #0f172a;
  --bg-card: rgba(15, 23, 42, 0.92);
  --border: rgba(255, 255, 255, 0.1);
  --text: #f4f7ff;
  --muted: #94a3b8;
  --accent: #3b82f6;
  --accent-soft: rgba(59, 130, 246, 0.18);
  --success: #22c55e;
  --error: #ef4444;
  --present: #22c55e;
  --excused: #eab308;
  --na: #64748b;
  font-family: "Segoe UI", system-ui, sans-serif;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background:
    radial-gradient(circle at 10% 0%, rgba(59, 130, 246, 0.2), transparent 30%),
    linear-gradient(160deg, var(--bg), #0b1224 60%, #111827);
  color: var(--text);
}

body {
  padding: 20px;
}

a {
  color: inherit;
}

.page {
  width: min(100%, 1100px);
  margin: 0 auto;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 28px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
}

.card-narrow {
  width: min(100%, 440px);
  margin: 10vh auto 0;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.card-header h1 {
  margin: 8px 0 6px;
  font-size: 1.75rem;
}

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

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
}

.brand img {
  border-radius: 8px;
}

.status {
  padding: 12px 14px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  margin-bottom: 18px;
  color: var(--muted);
}

.status[data-type="success"] {
  color: #bbf7d0;
  border-color: rgba(34, 197, 94, 0.35);
  background: rgba(34, 197, 94, 0.08);
}

.status[data-type="error"] {
  color: #fecaca;
  border-color: rgba(239, 68, 68, 0.35);
  background: rgba(239, 68, 68, 0.08);
}

.btn {
  appearance: none;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  border-radius: 12px;
  padding: 12px 16px;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.btn:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.08);
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.btn-primary {
  background: linear-gradient(135deg, #2563eb, #3b82f6);
  border-color: rgba(96, 165, 250, 0.5);
}

.btn-primary:hover:not(:disabled) {
  background: linear-gradient(135deg, #1d4ed8, #2563eb);
}

.btn-block {
  width: 100%;
}

.btn-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.field {
  display: grid;
  gap: 6px;
  margin-bottom: 14px;
}

.field label {
  font-size: 0.9rem;
  color: var(--muted);
}

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 11px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  font: inherit;
}

.field textarea {
  min-height: 100px;
  resize: vertical;
}

.divider {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 12px;
  color: var(--muted);
  margin: 18px 0;
  font-size: 0.85rem;
}

.divider::before,
.divider::after {
  content: "";
  height: 1px;
  background: var(--border);
}

#site-nav {
  margin-bottom: 18px;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  padding: 12px 16px;
  border-radius: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
}

.nav-brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  font-weight: 700;
}

.nav-links,
.nav-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.nav-link {
  text-decoration: none;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid transparent;
  color: #dbeafe;
  font-size: 0.92rem;
  font-weight: 600;
}

.nav-link.is-active {
  background: var(--accent-soft);
  border-color: rgba(96, 165, 250, 0.35);
}

.nav-user {
  font-weight: 700;
}

.nav-role,
.nav-version {
  color: var(--muted);
  font-size: 0.85rem;
}

.toolbar {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.toolbar label {
  display: grid;
  gap: 6px;
  font-size: 0.9rem;
  color: var(--muted);
}

.toolbar select {
  min-width: 180px;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  font: inherit;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 14px;
}

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

th,
td {
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

th {
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.02);
}

.empty {
  text-align: center;
  color: var(--muted);
  padding: 24px;
}

.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 700;
}

.badge-present {
  background: rgba(34, 197, 94, 0.15);
  color: #86efac;
}

.badge-excused {
  background: rgba(234, 179, 8, 0.15);
  color: #fde047;
}

.badge-na {
  background: rgba(100, 116, 139, 0.2);
  color: #cbd5e1;
}

.badge-pending {
  background: rgba(59, 130, 246, 0.15);
  color: #93c5fd;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  margin-bottom: 18px;
}

.stat-card {
  padding: 14px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
}

.stat-card span {
  display: block;
  color: var(--muted);
  font-size: 0.85rem;
  margin-bottom: 6px;
}

.stat-card strong {
  font-size: 1.4rem;
}

.cadet-list {
  display: grid;
  gap: 10px;
  margin-bottom: 18px;
}

.cadet-row {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 12px;
  align-items: center;
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.02);
}

.cadet-row.is-present {
  border-color: rgba(34, 197, 94, 0.35);
}

.cadet-row.is-excused {
  border-color: rgba(234, 179, 8, 0.35);
}

.cadet-row.is-na {
  opacity: 0.65;
}

.cadet-row-name {
  font-weight: 600;
}

.cadet-row-actions {
  display: flex;
  gap: 6px;
}

.mark-btn {
  min-width: 42px;
  padding: 8px 10px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.mark-btn.is-selected {
  background: var(--accent-soft);
  border-color: rgba(96, 165, 250, 0.45);
}

.cadet-row-label {
  min-width: 110px;
  text-align: right;
  color: var(--muted);
  font-size: 0.9rem;
}

.register-footer {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: end;
  padding-top: 8px;
}

.register-footer label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 0.9rem;
}

.toast {
  position: fixed;
  right: 20px;
  bottom: 20px;
  padding: 12px 16px;
  border-radius: 12px;
  background: #14532d;
  border: 1px solid rgba(34, 197, 94, 0.4);
  color: #dcfce7;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
}

.link-btn {
  background: none;
  border: none;
  color: #93c5fd;
  cursor: pointer;
  font: inherit;
  padding: 0;
  text-align: left;
}

.admin-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 18px;
}

@media (max-width: 860px) {
  .admin-grid {
    grid-template-columns: 1fr;
  }

  .cadet-row {
    grid-template-columns: 1fr;
  }

  .cadet-row-label {
    text-align: left;
  }
}