:root {
  --bg-primary: #0a0c10;
  --bg-secondary: #111318;
  --bg-card: #181b24;
  --bg-card-hover: #1e2230;
  --bg-sidebar: #0f1117;
  --border: #262a36;
  --border-light: #1e2230;
  --text-primary: #e8eaed;
  --text-secondary: #8b95a5;
  --text-muted: #5a6270;
  --accent: #6366f1;
  --accent-hover: #818cf8;
  --accent-dim: rgba(99,102,241,0.15);
  --success: #22c55e;
  --success-bg: rgba(34,197,94,0.12);
  --danger: #ef4444;
  --danger-bg: rgba(239,68,68,0.12);
  --warning: #f59e0b;
  --warning-bg: rgba(245,158,11,0.12);
  --info: #3b82f6;
  --info-bg: rgba(59,130,246,0.12);
  --radius: 10px;
  --radius-sm: 6px;
  --radius-full: 9999px;
  --shadow: 0 1px 3px rgba(0,0,0,0.3), 0 1px 2px rgba(0,0,0,0.2);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.4);
  --transition: 0.2s cubic-bezier(0.4,0,0.2,1);
}

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

html { font-size: 14px; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-primary); color: var(--text-primary);
  min-height: 100vh; -webkit-font-smoothing: antialiased; line-height: 1.5;
  overflow-x: hidden;
}

::selection { background: var(--accent-dim); color: var(--accent-hover); }

/* ── Scrollbar ──────────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ── Typography ──────────────────────────────────────────────────────── */
h1 { font-size: 1.5rem; font-weight: 700; letter-spacing: -0.02em; margin-bottom: 0.25rem; }
h2 { font-size: 1.125rem; font-weight: 600; }
.page-subtitle { color: var(--text-secondary); font-size: 0.875rem; margin-bottom: 1.25rem; }

a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent-hover); text-decoration: underline; }

code, pre {
  font-family: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
  font-size: 0.85em;
}
code { background: var(--bg-secondary); padding: 0.125em 0.375em; border-radius: var(--radius-sm); border: 1px solid var(--border); }

/* ── Login ──────────────────────────────────────────────────────────── */
.login-page {
  display: flex; align-items: center; justify-content: center;
  min-height: 100vh; padding: 1rem;
  background: radial-gradient(ellipse at top, rgba(99,102,241,0.08) 0%, transparent 60%),
              radial-gradient(ellipse at bottom, rgba(34,197,94,0.05) 0%, transparent 60%),
              var(--bg-primary);
}
.login-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px;
  padding: 2rem; width: 100%; max-width: 380px;
  box-shadow: var(--shadow-lg);
  animation: slideUp 0.3s ease;
}
.login-card h1 { font-size: 1.25rem; margin-bottom: 0.375rem; }
.login-card .subtitle { color: var(--text-secondary); font-size: 0.875rem; margin-bottom: 1.25rem; }
.login-card .error {
  background: var(--danger-bg); color: var(--danger); padding: 0.625rem 0.875rem;
  border-radius: var(--radius-sm); margin-bottom: 0.875rem; font-size: 0.8125rem; display: none;
  border: 1px solid rgba(239,68,68,0.2);
}
.login-card .version-badge {
  text-align: center; margin-top: 1.25rem; color: var(--text-muted); font-size: 0.7rem;
}

/* ── Layout ─────────────────────────────────────────────────────────── */
.app { display: flex; min-height: 100vh; }

.sidebar {
  width: 220px; background: var(--bg-sidebar); border-right: 1px solid var(--border);
  padding: 1rem; flex-shrink: 0; position: sticky; top: 0; height: 100vh;
  display: flex; flex-direction: column; z-index: 10;
}
.sidebar-brand {
  padding: 0.5rem 0.5rem 1rem; border-bottom: 1px solid var(--border-light); margin-bottom: 0.75rem;
}
.sidebar-brand h2 {
  font-size: 0.8125rem; font-weight: 700; color: var(--text-primary);
  letter-spacing: -0.01em;
}
.sidebar-brand .beta {
  display: inline-block; font-size: 0.6rem; font-weight: 600; text-transform: uppercase;
  background: var(--accent-dim); color: var(--accent); padding: 0.1rem 0.4rem;
  border-radius: var(--radius-full); margin-left: 0.375rem; letter-spacing: 0.03em;
}
.sidebar nav { display: flex; flex-direction: column; gap: 0.125rem; flex: 1; overflow-y: auto; }
.sidebar nav a {
  display: flex; align-items: center; gap: 0.5rem;
  padding: 0.5rem 0.625rem; border-radius: var(--radius-sm); color: var(--text-secondary);
  font-size: 0.8125rem; font-weight: 450; transition: all var(--transition);
}
.sidebar nav a:hover { background: var(--bg-card); color: var(--text-primary); text-decoration: none; }
.sidebar nav a.active { background: var(--accent-dim); color: var(--accent); font-weight: 500; }
.sidebar nav a .nav-icon { width: 16px; height: 16px; opacity: 0.7; flex-shrink: 0; }
.sidebar nav a.active .nav-icon { opacity: 1; }

.sidebar .nav-section {
  font-size: 0.6rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--text-muted); padding: 0.75rem 0.625rem 0.25rem;
}

.sidebar .logout {
  padding-top: 0.625rem; border-top: 1px solid var(--border-light);
}
.sidebar .logout button {
  display: flex; align-items: center; gap: 0.5rem;
  background: none; border: none; color: var(--text-secondary); cursor: pointer;
  font-size: 0.8125rem; padding: 0.5rem 0.625rem; width: 100%;
  text-align: left; border-radius: var(--radius-sm); transition: all var(--transition);
}
.sidebar .logout button:hover { background: var(--danger-bg); color: var(--danger); }

.main {
  flex: 1; padding: 1.5rem 2rem; overflow-y: auto;
  animation: fadeIn 0.2s ease;
}

/* ── Animations ─────────────────────────────────────────────────────── */
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideUp { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }
@keyframes slideIn { from { opacity: 0; transform: translateX(20px); } to { opacity: 1; transform: translateX(0); } }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.5; } }
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Stats grid ─────────────────────────────────────────────────────── */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 0.75rem; margin-bottom: 1.25rem; }
.stat-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1rem 1.125rem; transition: all var(--transition);
  position: relative; overflow: hidden;
}
.stat-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: var(--accent); opacity: 0;
  transition: opacity var(--transition);
}
.stat-card:hover { border-color: var(--accent); transform: translateY(-1px); box-shadow: 0 4px 20px rgba(0,0,0,0.3); }
.stat-card:hover::before { opacity: 1; }
.stat-card .label { color: var(--text-secondary); font-size: 0.65rem; text-transform: uppercase; letter-spacing: 0.06em; font-weight: 500; }
.stat-card .value { font-size: 1.625rem; font-weight: 700; margin-top: 0.125rem; letter-spacing: -0.03em; }
.stat-card .trend { font-size: 0.7rem; color: var(--text-muted); margin-top: 0.25rem; }
.stat-card.warning .value { color: var(--warning); }
.stat-card.success .value { color: var(--success); }
.stat-card.danger .value { color: var(--danger); }

/* ── Cards ──────────────────────────────────────────────────────────── */
.card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1.25rem; margin-bottom: 1rem;
  box-shadow: var(--shadow);
}
.card .empty { color: var(--text-muted); font-style: italic; font-size: 0.875rem; padding: 2rem 0; text-align: center; }

.section-header {
  display: flex; justify-content: space-between; align-items: center; margin-bottom: 0.75rem;
}

/* ── Help box ───────────────────────────────────────────────────────── */
.help-box {
  background: var(--info-bg); border: 1px solid rgba(59,130,246,0.15); border-radius: var(--radius);
  padding: 0.75rem 1rem; margin-bottom: 1rem; font-size: 0.8125rem;
  color: var(--text-secondary); line-height: 1.6;
}
.help-box strong { color: var(--text-primary); }

/* ── Tables ─────────────────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius-sm); }
table { width: 100%; border-collapse: collapse; font-size: 0.8125rem; }
th {
  text-align: left; color: var(--text-secondary); font-weight: 500;
  padding: 0.5rem 0.75rem; border-bottom: 1px solid var(--border);
  font-size: 0.65rem; text-transform: uppercase; letter-spacing: 0.06em;
  white-space: nowrap; user-select: none;
}
th.sortable:hover { color: var(--text-primary); background: var(--bg-card-hover); }
td { padding: 0.5rem 0.75rem; border-bottom: 1px solid var(--border-light); }
tbody tr { transition: background var(--transition); }
tbody tr:hover { background: var(--bg-card-hover); }
tbody tr:last-child td { border-bottom: none; }

.badge {
  display: inline-flex; align-items: center; gap: 0.375rem;
  padding: 0.125rem 0.5rem; border-radius: var(--radius-full); font-size: 0.6875rem;
  font-weight: 500; white-space: nowrap;
}
.badge::before { content: ''; width: 6px; height: 6px; border-radius: 50%; }

.badge.active { background: var(--success-bg); color: var(--success); }
.badge.active::before { background: var(--success); }
.badge.revoked { background: var(--danger-bg); color: var(--danger); }
.badge.revoked::before { background: var(--danger); }
.badge.monthly { background: var(--info-bg); color: var(--info); }
.badge.monthly::before { background: var(--info); }
.badge.yearly { background: rgba(163,113,247,0.12); color: #a371f7; }
.badge.yearly::before { background: #a371f7; }
.badge.lifetime { background: rgba(57,197,207,0.12); color: #39c5cf; }
.badge.lifetime::before { background: #39c5cf; }
.badge.expired { background: var(--danger-bg); color: var(--danger); }
.badge.expired::before { background: var(--danger); }
.badge.expiring { background: var(--warning-bg); color: var(--warning); }
.badge.expiring::before { background: var(--warning); }

/* ── Forms ─────────────────────────────────────────────────────────── */
.form-row { display: flex; gap: 0.75rem; align-items: flex-end; flex-wrap: wrap; }
.form-group { display: flex; flex-direction: column; gap: 0.25rem; min-width: 0; flex: 1; }
.form-group label { font-size: 0.65rem; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.06em; font-weight: 500; }

input, select, textarea {
  font-family: inherit;
  background: var(--bg-secondary); border: 1px solid var(--border); color: var(--text-primary);
  padding: 0.5rem 0.75rem; border-radius: var(--radius-sm); font-size: 0.8125rem;
  transition: all var(--transition); min-width: 0; width: 100%;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-dim); }
textarea { resize: vertical; min-height: 60px; }

button, .btn {
  font-family: inherit;
  background: var(--accent); color: #fff; border: none;
  padding: 0.5rem 1rem; border-radius: var(--radius-sm); font-size: 0.8125rem;
  font-weight: 500; cursor: pointer; transition: all var(--transition);
  display: inline-flex; align-items: center; gap: 0.375rem; white-space: nowrap;
  justify-content: center;
}
button:hover, .btn:hover { background: var(--accent-hover); transform: translateY(-1px); }
button:active, .btn:active { transform: translateY(0); }

button.primary { background: var(--accent); }
button.primary:hover { background: var(--accent-hover); }
button.success { background: var(--success); color: #000; }
button.success:hover { background: #16a34a; }
button.danger { background: var(--danger); }
button.danger:hover { background: #dc2626; }
button.ghost { background: transparent; color: var(--text-secondary); border: 1px solid var(--border); }
button.ghost:hover { background: var(--bg-card-hover); color: var(--text-primary); border-color: var(--text-muted); }
button.sm { padding: 0.3rem 0.625rem; font-size: 0.75rem; }
button.xs { padding: 0.2rem 0.5rem; font-size: 0.6875rem; }
button:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

.btn-group { display: flex; gap: 0.375rem; }

/* ── Search bar ─────────────────────────────────────────────────────── */
.search-bar { margin-bottom: 0.75rem; position: relative; }
.search-bar .search-input { padding-left: 2rem; }
.search-bar .search-icon { position: absolute; left: 0.625rem; top: 50%; transform: translateY(-50%); color: var(--text-muted); font-size: 0.8125rem; pointer-events: none; }

/* ── Pagination ─────────────────────────────────────────────────────── */
.pagination {
  display: flex; justify-content: space-between; align-items: center;
  margin-top: 0.75rem; padding-top: 0.625rem;
}
.pagination-info { color: var(--text-muted); font-size: 0.75rem; }
.pagination-controls { display: flex; gap: 0.375rem; }
.pagination-btn[disabled] { opacity: 0.35; cursor: not-allowed; pointer-events: none; }

/* ── Modals ─────────────────────────────────────────────────────────── */
.modal-backdrop {
  position: fixed; inset: 0; background: rgba(0,0,0,0.65);
  display: flex; align-items: center; justify-content: center;
  z-index: 50; animation: fadeIn 0.15s ease;
  backdrop-filter: blur(4px);
}
.modal {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px;
  padding: 1.5rem; width: 90%; max-width: 520px;
  max-height: 85vh; overflow-y: auto;
  box-shadow: var(--shadow-lg);
  animation: slideUp 0.25s ease;
}
.modal h2 { margin-bottom: 0.75rem; font-weight: 600; }
.modal-actions { display: flex; gap: 0.5rem; justify-content: flex-end; margin-top: 1.25rem; }

/* ── Toasts ─────────────────────────────────────────────────────────── */
.toast {
  position: fixed; top: 1rem; right: 1rem; z-index: 100;
  padding: 0.75rem 1.125rem; border-radius: var(--radius-sm); font-size: 0.8125rem;
  font-weight: 500; box-shadow: var(--shadow-lg);
  transform: translateX(120%); transition: transform 0.35s cubic-bezier(0.34,1.56,0.64,1);
  max-width: 400px; backdrop-filter: blur(8px);
}
.toast-visible { transform: translateX(0); }
.toast-success { background: var(--success-bg); color: var(--success); border: 1px solid rgba(34,197,94,0.2); }
.toast-error { background: var(--danger-bg); color: var(--danger); border: 1px solid rgba(239,68,68,0.2); }

/* ── Code block ─────────────────────────────────────────────────────── */
pre.code {
  background: var(--bg-secondary); border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 0.75rem; overflow-x: auto; font-size: 0.75rem; line-height: 1.55;
  margin-top: 0.5rem;
}

/* ── Loading ────────────────────────────────────────────────────────── */
.spinner {
  width: 18px; height: 18px; border: 2px solid var(--border);
  border-top-color: var(--accent); border-radius: 50%;
  animation: spin 0.6s linear infinite; display: inline-block;
}
.loading-overlay {
  display: flex; align-items: center; justify-content: center;
  padding: 3rem 0; gap: 0.625rem; color: var(--text-muted); font-size: 0.8125rem;
}

/* ── Status indicators ──────────────────────────────────────────────── */
.status-dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
.status-dot.online { background: var(--success); box-shadow: 0 0 6px var(--success); }
.status-dot.offline { background: var(--text-muted); }
.status-dot.warning { background: var(--warning); box-shadow: 0 0 6px var(--warning); }
.status-dot.error { background: var(--danger); box-shadow: 0 0 6px var(--danger); }

/* ── Tabs ────────────────────────────────────────────────────────────── */
.tabs { display: flex; gap: 0; margin-bottom: 1rem; border-bottom: 1px solid var(--border); }
.tab {
  padding: 0.5rem 1rem; font-size: 0.8125rem; font-weight: 500;
  color: var(--text-secondary); cursor: pointer; border: none; background: none;
  border-bottom: 2px solid transparent; transition: all var(--transition);
  margin-bottom: -1px;
}
.tab:hover { color: var(--text-primary); }
.tab.active { color: var(--accent); border-bottom-color: var(--accent); }

/* ── Table row actions ──────────────────────────────────────────────── */
.row-actions { display: flex; gap: 0.25rem; }

/* ── Expiry countdown ──────────────────────────────────────────────── */
.expiry-days {
  font-size: 0.6875rem; color: var(--text-muted);
}

/* ── Page transition ────────────────────────────────────────────────── */
.page-enter { animation: slideIn 0.2s ease; }

/* ── Responsive ─────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .sidebar { width: 56px; padding: 0.75rem 0.5rem; }
  .sidebar-brand h2, .sidebar-brand .beta, .sidebar nav a span, .sidebar .logout button span, .sidebar .nav-section { display: none; }
  .sidebar nav a { justify-content: center; padding: 0.5rem; }
  .sidebar .logout button { justify-content: center; padding: 0.5rem; }
  .main { padding: 1rem; }
  .stats { grid-template-columns: repeat(2, 1fr); gap: 0.5rem; }
}

/* ── Bulk import zone ──────────────────────────────────────────────── */
.bulk-zone {
  border: 2px dashed var(--border); border-radius: var(--radius);
  padding: 1.5rem; text-align: center; margin-bottom: 0.75rem;
  transition: all var(--transition); cursor: pointer;
}
.bulk-zone:hover, .bulk-zone.dragover { border-color: var(--accent); background: var(--accent-dim); }
.bulk-zone textarea {
  margin-top: 0.75rem; min-height: 100px;
}