:root {
  --accent: #6366f1;
  --accent-hover: #4f46e5;
  --bg-main: #0f1117;
  --bg-card: #1a1d2e;
  --bg-card2: #1e2235;
  --border-color: #2d3056;
  --radius: 14px;
  --radius-sm: 8px;
}

body {
  background-color: var(--bg-main);
  background-image: radial-gradient(ellipse at 20% 0%, rgba(99,102,241,0.08) 0%, transparent 50%),
                    radial-gradient(ellipse at 80% 100%, rgba(99,102,241,0.05) 0%, transparent 50%);
  min-height: 100vh;
}

/* Navbar */
.navbar {
  background: rgba(26, 29, 46, 0.95) !important;
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color) !important;
  padding: 0.6rem 1.5rem;
}
.navbar-brand {
  font-size: 1.1rem;
  letter-spacing: 0.3px;
}
.navbar-brand i {
  color: var(--accent) !important;
}
.nav-link {
  border-radius: var(--radius-sm);
  padding: 0.4rem 0.75rem !important;
  transition: background 0.15s, color 0.15s;
}
.nav-link:hover, .nav-link.active {
  background: rgba(99,102,241,0.15);
  color: #a5b4fc !important;
}
.dropdown-menu-dark {
  background: var(--bg-card2) !important;
  border: 1px solid var(--border-color) !important;
  border-radius: var(--radius-sm) !important;
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
}
.dropdown-item {
  border-radius: 6px !important;
  margin: 2px 4px;
  padding: 0.45rem 0.75rem;
}

/* Cards */
.card {
  background: var(--bg-card) !important;
  border: 1px solid var(--border-color) !important;
  border-radius: var(--radius) !important;
  box-shadow: 0 4px 24px rgba(0,0,0,0.25);
  transition: box-shadow 0.2s, transform 0.2s;
}
.card:hover {
  box-shadow: 0 8px 32px rgba(0,0,0,0.35);
}

/* Stat cards */
.stat-card {
  border-radius: var(--radius) !important;
  padding: 1.5rem;
  background: var(--bg-card2) !important;
  border: 1px solid var(--border-color) !important;
  transition: transform 0.2s, box-shadow 0.2s;
}
.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.35);
}
.stat-card.border-primary { border-color: rgba(99,102,241,0.5) !important; }
.stat-card.border-info { border-color: rgba(6,182,212,0.4) !important; }
.stat-card.border-secondary { border-color: rgba(100,116,139,0.4) !important; }
.stat-card.border-danger { border-color: rgba(239,68,68,0.5) !important; }
.stat-card.border-success { border-color: rgba(34,197,94,0.4) !important; }

/* Tables */
.table-dark {
  --bs-table-bg: transparent;
  --bs-table-hover-bg: rgba(99,102,241,0.08);
}
.table-dark thead {
  background: rgba(45, 48, 86, 0.8) !important;
}
.table-dark thead th {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: #94a3b8;
  border-bottom: 1px solid var(--border-color) !important;
  padding: 0.9rem 1rem;
}
.table-dark td {
  border-color: var(--border-color) !important;
  padding: 0.85rem 1rem;
  vertical-align: middle;
}
.table-dark tr:last-child td { border-bottom: none !important; }

/* Buttons */
.btn {
  border-radius: var(--radius-sm) !important;
  font-weight: 500;
  transition: all 0.15s;
}
.btn-primary {
  background: var(--accent) !important;
  border-color: var(--accent) !important;
}
.btn-primary:hover {
  background: var(--accent-hover) !important;
  border-color: var(--accent-hover) !important;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(99,102,241,0.4);
}
.btn-success:hover { transform: translateY(-1px); box-shadow: 0 4px 12px rgba(34,197,94,0.3); }
.btn-outline-warning:hover { transform: translateY(-1px); }
.btn-outline-danger:hover { transform: translateY(-1px); }

/* Forms */
.form-control, .form-select {
  background: #111827 !important;
  border: 1px solid var(--border-color) !important;
  border-radius: var(--radius-sm) !important;
  color: #e2e8f0 !important;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.form-control:focus, .form-select:focus {
  border-color: var(--accent) !important;
  box-shadow: 0 0 0 3px rgba(99,102,241,0.15) !important;
}
.form-control::placeholder { color: #475569 !important; }
.input-group-text {
  background: #1a1d2e !important;
  border: 1px solid var(--border-color) !important;
  color: #64748b;
  border-radius: var(--radius-sm) !important;
}
.form-label { color: #94a3b8; font-size: 0.85rem; font-weight: 500; margin-bottom: 0.4rem; }

/* Badges */
.badge {
  border-radius: 6px !important;
  font-weight: 500;
  letter-spacing: 0.3px;
}

/* Nav tabs */
.nav-tabs {
  border-bottom: 1px solid var(--border-color) !important;
  gap: 4px;
}
.nav-tabs .nav-link {
  border: 1px solid transparent !important;
  border-radius: var(--radius-sm) !important;
  color: #64748b;
  background: transparent;
}
.nav-tabs .nav-link:hover {
  background: rgba(99,102,241,0.1);
  color: #a5b4fc;
  border-color: transparent !important;
}
.nav-tabs .nav-link.active {
  background: rgba(99,102,241,0.2) !important;
  border-color: var(--accent) !important;
  color: #a5b4fc !important;
}

/* Alerts */
.alert {
  border-radius: var(--radius) !important;
  border: 1px solid;
}
.alert-success { background: rgba(34,197,94,0.1) !important; border-color: rgba(34,197,94,0.25) !important; color: #4ade80 !important; }
.alert-danger { background: rgba(239,68,68,0.1) !important; border-color: rgba(239,68,68,0.25) !important; color: #f87171 !important; }
.alert-info { background: rgba(6,182,212,0.1) !important; border-color: rgba(6,182,212,0.25) !important; color: #22d3ee !important; }
.alert-warning { background: rgba(245,158,11,0.1) !important; border-color: rgba(245,158,11,0.25) !important; color: #fbbf24 !important; }

/* Modals */
.modal-content {
  background: var(--bg-card2) !important;
  border: 1px solid var(--border-color) !important;
  border-radius: var(--radius) !important;
  box-shadow: 0 24px 64px rgba(0,0,0,0.5);
}
.modal-header {
  border-bottom: 1px solid var(--border-color) !important;
}

/* Toast notification */
.toast-notification {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--accent);
  color: white;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  z-index: 9999;
  animation: slideIn 0.2s ease, fadeOut 0.3s ease 1.7s forwards;
  box-shadow: 0 4px 16px rgba(99,102,241,0.4);
}
@keyframes slideIn {
  from { transform: translateY(20px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}
@keyframes fadeOut {
  to { opacity: 0; transform: translateY(10px); }
}

/* Pulse animation for critical expiry */
@keyframes pulse-red {
  0%, 100% { box-shadow: 0 0 0 0 rgba(239,68,68,0.5); }
  50% { box-shadow: 0 0 0 6px rgba(239,68,68,0); }
}
.badge.pulse { animation: pulse-red 1.5s infinite; }

/* Login page */
.login-card {
  background: var(--bg-card) !important;
  border: 1px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 16px 64px rgba(0,0,0,0.4);
}

/* Page title */
h1.h3 { color: #e2e8f0; font-weight: 600; }

/* Code */
code {
  color: #6ee7b7 !important;
  background: rgba(110,231,183,0.08);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.875em;
}

/* Section headers in forms */
.form-section-title {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--accent);
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.5rem;
  margin-bottom: 1rem;
}

/* Panel cards on dashboard */
.panel-card {
  border-color: rgba(245,158,11,0.3) !important;
  transition: transform 0.2s, box-shadow 0.2s;
}
.panel-card:hover {
  transform: translateY(-2px);
  border-color: rgba(245,158,11,0.6) !important;
  box-shadow: 0 8px 24px rgba(245,158,11,0.15);
}
.panel-card .card-header {
  background: rgba(245,158,11,0.08) !important;
  border-bottom: 1px solid rgba(245,158,11,0.2) !important;
}

/* Panel tab in servers list */
.nav-link.panel-tab { color: #f59e0b; }
.nav-link.panel-tab:hover, .nav-link.panel-tab.active {
  background: rgba(245,158,11,0.15);
  color: #fcd34d !important;
  border-color: rgba(245,158,11,0.5) !important;
}

/* Row highlight for expiry status */
.row-critical { background: rgba(239,68,68,0.06) !important; }
.row-warning { background: rgba(245,158,11,0.05) !important; }
.row-expired { background: rgba(239,68,68,0.12) !important; }

/* Drag & drop */
.drag-handle {
  cursor: grab;
  opacity: 0.35;
  transition: opacity 0.15s;
  user-select: none;
}
.drag-handle:hover { opacity: 1; }
.drag-handle:active { cursor: grabbing; }
.drag-ghost { opacity: 0.4; background: rgba(99,102,241,0.2) !important; }
.drag-chosen { background: rgba(99,102,241,0.1) !important; box-shadow: 0 0 0 2px var(--accent); }

/* Scrollbar */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-main); }
::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #3d4170; }