:root {
  --bg: #0e1015;
  --surface: #171a21;
  --surface-2: #1e222b;
  --border: #282d38;
  --border-strong: #3a4150;
  --text: #e7e9ee;
  --text-muted: #8d96a6;
  --accent: #2fd6a1;
  --accent-dark: #1ea883;
  --accent-bg: rgba(47, 214, 161, 0.12);
  --danger: #f0625c;
  --danger-bg: rgba(240, 98, 92, 0.12);
  --success: #2fd6a1;
  --success-bg: rgba(47, 214, 161, 0.12);
  --radius: 10px;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.6;
}

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

h1, h2, h3 { font-weight: 600; margin: 0 0 6px; }
h1 { font-size: 24px; }
h2 { font-size: 18px; }
h3 { font-size: 15px; }

.text-muted { color: var(--text-muted); }
.mono { font-family: var(--font-mono); letter-spacing: 0.2px; }

/* ---------- App shell ---------- */
.app-shell {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 250px;
  flex-shrink: 0;
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
  transition: transform 0.2s ease;
  z-index: 40;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 22px 20px;
  border-bottom: 1px solid var(--border);
}

.brand-mark {
  background: var(--accent);
  color: #06231b;
  font-weight: 700;
  font-size: 13px;
  padding: 4px 8px;
  border-radius: 6px;
  letter-spacing: 0.5px;
}

.brand-name {
  font-weight: 600;
  font-size: 15px;
}

.sidebar-nav {
  flex: 1;
  padding: 14px 12px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  overflow-y: auto;
}

.sidebar-footer {
  padding: 12px;
  border-top: 1px solid var(--border);
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--radius);
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 500;
}

.nav-item i { font-size: 18px; width: 20px; text-align: center; }

.nav-item:hover { background: var(--surface-2); color: var(--text); }

.nav-item.active {
  background: var(--accent-bg);
  color: var(--accent);
}

.nav-item--muted:hover { color: var(--danger); }

/* ---------- Main / topbar ---------- */
.main { flex: 1; min-width: 0; display: flex; flex-direction: column; }

.topbar {
  display: flex;
  align-items: center;
  padding: 14px 24px;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 30;
}

.topbar-spacer { flex: 1; }

.sidebar-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 8px;
  padding: 8px 10px;
  cursor: pointer;
  font-size: 18px;
}

.user-chip {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-muted);
}

.user-chip i { font-size: 20px; color: var(--text); }

.role-badge {
  background: var(--surface-2);
  color: var(--text-muted);
  border-radius: 999px;
  padding: 2px 10px;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.content { padding: 28px 32px; max-width: 1100px; width: 100%; margin: 0 auto; }

.page-header { margin-bottom: 24px; }

/* ---------- Cards / grid ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.quick-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 22px;
  display: block;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

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

.quick-card i { font-size: 26px; color: var(--accent); margin-bottom: 12px; display: block; }

.quick-card p { color: var(--text-muted); margin: 4px 0 0; font-size: 13px; }

.quick-card--muted { opacity: 0.55; }
.quick-card--muted i { color: var(--text-muted); }

/* ---------- Forms ---------- */
.form-card, .form-stack {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 24px;
  max-width: 640px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.field { display: flex; flex-direction: column; gap: 6px; font-size: 13px; color: var(--text-muted); }

.field input {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 14px;
}

.field input.mono { font-family: var(--font-mono); }

.field input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-bg);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: none;
  border-radius: 8px;
  padding: 11px 18px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  font-family: var(--font-sans);
}

.btn-primary { background: var(--accent); color: #06231b; }
.btn-primary:hover { background: var(--accent-dark); }
.btn-block { width: 100%; }

/* ---------- Search / table ---------- */
.search-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 8px 8px 8px 16px;
  margin-bottom: 24px;
}

.search-bar i { color: var(--text-muted); font-size: 18px; }

.search-bar input {
  flex: 1;
  background: none;
  border: none;
  color: var(--text);
  font-size: 14px;
  padding: 8px 0;
}

.search-bar input:focus { outline: none; }

.table-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
}

.data-table { width: 100%; border-collapse: collapse; font-size: 13px; }

.data-table th, .data-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.data-table th {
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: 0.4px;
}

.data-table tbody tr:hover { background: var(--surface-2); }
.data-table tbody tr:last-child td { border-bottom: none; }

/* ---------- Alerts / empty state ---------- */
.alert {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: 10px;
  font-size: 14px;
  margin-bottom: 18px;
}

.alert-danger { background: var(--danger-bg); color: var(--danger); }
.alert-success { background: var(--success-bg); color: var(--success); }

.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}

.empty-state i { font-size: 40px; margin-bottom: 12px; display: block; }
.empty-state h2 { color: var(--text); margin-bottom: 6px; }

/* ---------- Login ---------- */
.login-body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: radial-gradient(circle at top, #171b24, var(--bg));
}

.login-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 36px;
  width: 100%;
  max-width: 360px;
}

.login-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 28px;
  justify-content: center;
}

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .sidebar {
    position: fixed;
    left: 0;
    transform: translateX(-100%);
    box-shadow: 0 0 0 1000px rgba(0,0,0,0.5);
  }
  .sidebar.open { transform: translateX(0); }
  .sidebar-toggle { display: inline-flex; }
  .content { padding: 20px; }
  .form-row { grid-template-columns: 1fr; }
}