@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;500;600;700&display=swap');

:root {
  --bg-deep: #070708;
  --bg-base: #0d0d0f;
  --bg-elevated: #141418;
  --bg-card: #18181d;
  --bg-hover: #1f1f26;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);
  --text: #f5f5f7;
  --text-muted: #9ca3af;
  --text-dim: #6b7280;
  --accent: #ffffff;
  --accent-soft: rgba(255, 255, 255, 0.12);
  --success: #22c55e;
  --success-bg: rgba(34, 197, 94, 0.12);
  --warning: #f59e0b;
  --warning-bg: rgba(245, 158, 11, 0.12);
  --danger: #ef4444;
  --danger-bg: rgba(239, 68, 68, 0.12);
  --info: #60a5fa;
  --info-bg: rgba(96, 165, 250, 0.12);
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.45);
  --radius: 16px;
  --radius-sm: 10px;
  --font: 'Montserrat', system-ui, sans-serif;
}

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

html, body {
  margin: 0;
  min-height: 100%;
  background: var(--bg-deep);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.5;
}

body {
  background:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(255,255,255,0.06), transparent),
    radial-gradient(circle at 100% 100%, rgba(255,255,255,0.03), transparent 40%),
    var(--bg-deep);
}

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

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

.sidebar {
  background: rgba(13, 13, 15, 0.92);
  border-right: 1px solid var(--border);
  backdrop-filter: blur(12px);
  padding: 28px 20px;
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 36px;
}

.brand img {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  object-fit: contain;
  background: #fff;
  padding: 4px;
}

.brand-text h1 {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.brand-text p {
  margin: 2px 0 0;
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1;
}

.nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  transition: background 0.2s, color 0.2s;
}

.nav a:hover, .nav a.active {
  background: var(--accent-soft);
  color: var(--text);
}

.sidebar-footer {
  margin-top: auto;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  font-size: 0.78rem;
  color: var(--text-dim);
}

.main {
  padding: 28px 32px 48px;
  max-width: 1280px;
}

.page-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 28px;
}

.page-header h2 {
  margin: 0;
  font-size: 1.65rem;
  font-weight: 700;
}

.page-header p {
  margin: 6px 0 0;
  color: var(--text-muted);
  font-size: 0.92rem;
}

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

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

.card {
  background: linear-gradient(180deg, rgba(255,255,255,0.03), transparent), var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
}

.card h3 {
  margin: 0 0 8px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.stat-value {
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.1;
}

.stat-meta {
  margin-top: 8px;
  font-size: 0.82rem;
  color: var(--text-dim);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
}

.badge-success { background: var(--success-bg); color: var(--success); }
.badge-warning { background: var(--warning-bg); color: var(--warning); }
.badge-danger { background: var(--danger-bg); color: var(--danger); }
.badge-info { background: var(--info-bg); color: var(--info); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 18px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font-family: inherit;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.15s, background 0.2s, border-color 0.2s;
}

.btn:hover { transform: translateY(-1px); }
.btn:disabled { opacity: 0.55; cursor: not-allowed; transform: none; }

.btn-primary {
  background: var(--accent);
  color: #111;
}

.btn-primary:hover { background: #e5e5e5; }

.btn-ghost {
  background: transparent;
  border-color: var(--border-strong);
  color: var(--text);
}

.btn-ghost:hover { background: var(--bg-hover); }

.btn-danger {
  background: var(--danger-bg);
  border-color: rgba(239, 68, 68, 0.35);
  color: var(--danger);
}

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

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

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

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

th {
  color: var(--text-muted);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  background: rgba(255,255,255,0.02);
}

tr:hover td { background: rgba(255,255,255,0.02); }

.car-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}

.car-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.2s, transform 0.2s;
}

.car-card:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
}

.car-card img {
  width: 100%;
  height: 150px;
  object-fit: cover;
  background: #222;
}

.car-card-body { padding: 14px 16px 16px; }

.car-card-body h4 {
  margin: 0 0 6px;
  font-size: 0.95rem;
}

.car-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  color: var(--text-muted);
  font-size: 0.8rem;
}

.car-price {
  margin-top: 10px;
  font-size: 1.1rem;
  font-weight: 700;
}

.log-box {
  background: #050506;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.78rem;
  color: #cbd5e1;
  max-height: 320px;
  overflow: auto;
  white-space: pre-wrap;
}

.login-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.login-card {
  width: min(420px, 100%);
  background: linear-gradient(180deg, rgba(255,255,255,0.04), transparent), var(--bg-card);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 4px);
  padding: 36px 32px;
  box-shadow: var(--shadow);
}

.login-brand {
  text-align: center;
  margin-bottom: 28px;
}

.login-brand img {
  width: 64px;
  height: 64px;
  border-radius: 14px;
  background: #fff;
  padding: 6px;
  margin-bottom: 14px;
}

.login-brand h1 {
  margin: 0;
  font-size: 1.35rem;
}

.login-brand p {
  margin: 8px 0 0;
  color: var(--text-muted);
  font-size: 0.88rem;
}

.form-group { margin-bottom: 16px; }

.form-group label {
  display: block;
  margin-bottom: 6px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
}

.form-group input, .form-group select {
  width: 100%;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-strong);
  background: var(--bg-base);
  color: var(--text);
  font-family: inherit;
  font-size: 0.92rem;
}

.form-group input:focus, .form-group select:focus {
  outline: none;
  border-color: rgba(255,255,255,0.35);
  box-shadow: 0 0 0 3px rgba(255,255,255,0.06);
}

.alert {
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.86rem;
  margin-bottom: 16px;
}

.alert-error {
  background: var(--danger-bg);
  border: 1px solid rgba(239, 68, 68, 0.35);
  color: #fecaca;
}

.alert-success {
  background: var(--success-bg);
  border: 1px solid rgba(34, 197, 94, 0.35);
  color: #bbf7d0;
}

.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--text-muted);
}

.spinner {
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255,255,255,0.2);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

@media (max-width: 1024px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar {
    position: relative;
    height: auto;
  }
  .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 640px) {
  .main { padding: 20px 16px 32px; }
  .grid-4, .grid-2 { grid-template-columns: 1fr; }
  .page-header { flex-direction: column; }
}