:root {
  --ink: #d7deea;
  --ink-soft: #9fb0c6;
  --paper: #0e141f;
  --panel: #131b2a;
  --panel-2: #151f32;
  --accent: #3ea6ff;
  --accent-2: #32d2a2;
  --danger: #f26b6b;
  --success: #2ecc71;
  --warning: #f0b429;
  --muted: #7b8aa1;
  --border: #1f2a40;
  --shadow: 0 18px 36px rgba(5, 8, 14, 0.45);
  --radius: 16px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: 'Space Grotesk', 'Manrope', 'IBM Plex Sans', sans-serif;
  background: radial-gradient(1200px 600px at 10% -20%, #223152, transparent),
              radial-gradient(900px 500px at 90% -10%, #1a3242, transparent),
              var(--paper);
  color: var(--ink);
}

a { color: inherit; text-decoration: none; }

.layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
}

.sidebar {
  background: #101826;
  border-right: 1px solid var(--border);
  padding: 24px 18px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.sidebar__brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
}

.sidebar__section {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--muted);
}

.sidebar__nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.sidebar__nav a {
  padding: 10px 12px;
  border-radius: 12px;
  color: var(--ink-soft);
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.sidebar__nav a.active,
.sidebar__nav a:hover {
  background: #1b2942;
  color: var(--accent);
}

.nav-count {
  background: rgba(62, 166, 255, 0.18);
  color: var(--accent);
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
}

.sidebar__footer {
  margin-top: auto;
}

.content {
  display: flex;
  flex-direction: column;
}

.content__topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 28px;
  background: rgba(19, 27, 42, 0.9);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  backdrop-filter: blur(10px);
  z-index: 10;
}

.content__title {
  font-size: 18px;
  font-weight: 700;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 28px;
}

.brand-badge {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 0 12px rgba(62, 166, 255, 0.6);
}

.grid {
  display: grid;
  gap: 18px;
}

.grid.cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid.cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.ui-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
}

.ui-card__title {
  margin: 0 0 12px 0;
}

.ui-stat {
  padding: 16px;
  border-radius: 12px;
  background: linear-gradient(180deg, #161f31, #131b2a);
  border: 1px solid var(--border);
}

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

.ui-table th,
.ui-table td {
  padding: 12px 10px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  font-size: 14px;
}

.ui-badge {
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  display: inline-block;
}

.ui-badge--paid { background: rgba(46, 204, 113, 0.15); color: var(--success); }
.ui-badge--pending { background: rgba(240, 180, 41, 0.15); color: var(--warning); }
.ui-badge--cancelled { background: rgba(242, 107, 107, 0.15); color: var(--danger); }
.ui-badge--void { background: rgba(123, 138, 161, 0.2); color: var(--muted); }

.ui-btn {
  padding: 10px 14px;
  border-radius: 10px;
  border: 1px solid transparent;
  background: var(--accent);
  color: #06101d;
  font-weight: 700;
  cursor: pointer;
}

.ui-btn--secondary {
  background: #1b2942;
  color: var(--accent);
  border-color: #2c3b57;
}

.ui-btn--ghost {
  background: transparent;
  color: var(--ink-soft);
  border-color: var(--border);
}

.ui-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.ui-field__label { color: var(--ink-soft); font-size: 13px; }

.ui-input,
.ui-select,
.ui-textarea {
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  font-family: inherit;
  background: #0f1728;
  color: var(--ink);
}

.stack {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.muted { color: var(--muted); }

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

.footer {
  padding: 30px;
  text-align: center;
  color: var(--muted);
  font-size: 13px;
}

.auth-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.auth-panel {
  width: 100%;
  max-width: 520px;
  background: var(--panel-2);
  border-radius: 22px;
  border: 1px solid var(--border);
  padding: 32px;
  box-shadow: var(--shadow);
}

.auth-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  font-weight: 700;
  font-size: 18px;
}

@media (max-width: 960px) {
  .grid.cols-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .layout { grid-template-columns: 1fr; }
  .sidebar { position: sticky; top: 0; z-index: 20; flex-direction: row; flex-wrap: wrap; }
}

@media (max-width: 640px) {
  .grid.cols-4, .grid.cols-2 { grid-template-columns: 1fr; }
}