:root {
  --bg: #0b0f14;
  --surface: #111827;
  --surface-2: #0f1626;
  --border: rgba(255, 255, 255, 0.06);
  --border-strong: rgba(255, 255, 255, 0.09);
  --text: #e8edf6;
  --muted: rgba(232, 237, 246, 0.62);
  --muted-2: rgba(232, 237, 246, 0.46);
  --accent: #3b82f6;
  --accent-2: #2563eb;
  --danger: #fb7185;
  --success: #22c55e;
  --radius: 14px;
  --shadow: 0 18px 60px rgba(0, 0, 0, 0.55);
}

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

html, body {
  height: 100%;
}

body {
  background: radial-gradient(1200px 700px at 10% 10%, rgba(59, 130, 246, 0.12), transparent 55%),
              radial-gradient(900px 600px at 90% 0%, rgba(34, 197, 94, 0.08), transparent 55%),
              var(--bg);
  color: var(--text);
}

/* Shell */
.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 280px 1fr;
}

.app-shell.no-sidebar {
  grid-template-columns: 1fr;
}

.sidebar {
  background: linear-gradient(180deg, rgba(17, 24, 39, 0.95), rgba(10, 15, 26, 0.92));
  border-right: 1px solid var(--border);
  padding: 18px 16px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: auto;
}

.brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 10px 10px 14px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--border);
}

.brand-badge {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: rgba(59, 130, 246, 0.18);
  border: 1px solid rgba(59, 130, 246, 0.25);
  display: grid;
  place-items: center;
  color: var(--text);
  font-weight: 800;
  letter-spacing: 0.5px;
}

.brand-logo {
  width: 100%;
  max-width: 210px;
  height: auto;
  max-height: 70px;
  object-fit: contain;
  background: transparent;
  border: 0;
  padding: 0;
}

.brand-title {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
  align-items: center;
  text-align: center;
}

.brand-title strong {
  font-size: 13px;
  font-weight: 800;
}

.brand-title span {
  font-size: 11px;
  color: var(--muted);
}

.nav-section {
  margin-top: 14px;
}

.nav-section-title {
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted-2);
  padding: 10px 10px 6px;
}

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

.nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 10px;
  border-radius: 12px;
  color: var(--muted);
  text-decoration: none;
  border: 1px solid transparent;
  transition: background 160ms ease, color 160ms ease, border-color 160ms ease;
}

.nav a:hover {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  border-color: var(--border);
}

.nav a.active {
  background: rgba(59, 130, 246, 0.12);
  color: var(--text);
  border-color: rgba(59, 130, 246, 0.25);
}

.sidebar-footer {
  position: sticky;
  bottom: 0;
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(17, 24, 39, 0), rgba(17, 24, 39, 0.9) 35%, rgba(17, 24, 39, 0.95));
}

.user-pill {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 10px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
}

.user-pill .name {
  font-weight: 650;
  font-size: 13px;
}

.user-pill .logout {
  padding: 7px 10px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  text-decoration: none;
}

.user-pill .logout:hover {
  border-color: rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.05);
}

.main {
  padding: 22px 22px 40px;
}

.content {
  max-width: 1200px;
  margin: 0 auto;
}

/* Cards + typography */
.page-title {
  font-size: 26px;
  font-weight: 780;
  margin: 6px 0 4px;
}
.page-subtitle {
  color: var(--muted);
  font-size: 13px;
  margin: 0 0 16px;
}

.card {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.015));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: 0 14px 45px rgba(0, 0, 0, 0.35);
}

/* Inputs */
label {
  color: var(--muted);
  font-size: 12px;
}
input, select, textarea {
  background: rgba(17, 24, 39, 0.6);
  border: 1px solid var(--border);
  border-radius: 12px;
}
input:focus, select:focus, textarea:focus {
  border-color: rgba(59, 130, 246, 0.5);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.16);
}

/* Buttons */
button, .btn {
  background: linear-gradient(180deg, var(--accent), var(--accent-2));
  border-radius: 12px;
  border: 1px solid rgba(59, 130, 246, 0.35);
  box-shadow: 0 14px 40px rgba(37, 99, 235, 0.22);
}
button:hover, .btn:hover {
  filter: brightness(1.05);
}

/* Tables */
table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: rgba(17, 24, 39, 0.35);
}
th, td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
}
th {
  color: var(--muted);
  font-weight: 650;
  font-size: 12px;
  background: rgba(255, 255, 255, 0.03);
}
tr:last-child td {
  border-bottom: 0;
}

/* Flash toasts keep existing behavior; just soften visuals */
.flash {
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
}
.flash.success { border-color: rgba(34, 197, 94, 0.35); background: rgba(34, 197, 94, 0.08); }
.flash.error { border-color: rgba(251, 113, 133, 0.4); background: rgba(251, 113, 133, 0.08); }

@media (max-width: 900px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar { position: relative; height: auto; }
}