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

:root {
  --bg: #0c0f14;
  --bg-elevated: #12161d;
  --bg-card: #161b24;
  --bg-card-hover: #1a202a;
  --bg-hover: #1a202a;
  --bg-input: #0e1118;
  --border: rgba(255, 255, 255, 0.06);
  --border-strong: rgba(255, 255, 255, 0.1);
  --text: #f0f2f5;
  --text-muted: #8b92a0;
  --text-faint: #5c6370;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --accent-glow: rgba(59, 130, 246, 0.25);
  --success: #22c55e;
  --success-dim: rgba(34, 197, 94, 0.15);
  --danger: #ef4444;
  --danger-dim: rgba(239, 68, 68, 0.15);
  --warning: #f59e0b;
  --warning-dim: rgba(245, 158, 11, 0.15);
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.25);
  --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.35);
  --font: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --transition: 0.2s ease;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 15px;
  font-weight: 500;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover { color: var(--accent-hover); }

/* Layout */
.container { max-width: 1120px; margin: 0 auto; padding: 0 1.5rem; }

.header {
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
  padding: 0.875rem 0;
  margin-bottom: 2rem;
  backdrop-filter: blur(12px);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}
.logo {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.02em;
}
.nav {
  display: flex;
  gap: 0.25rem;
  align-items: center;
  flex-wrap: wrap;
}
.nav a {
  color: var(--text-muted);
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color var(--transition), background var(--transition);
}
.nav a:hover {
  color: var(--text);
  background: var(--border);
}
.nav .active {
  color: var(--accent);
  background: var(--accent-glow);
}

/* Nav Dropdowns */
.nav-dropdown {
  position: relative;
}
.nav-dropdown-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.5rem 0.75rem;
  border: none;
  border-radius: var(--radius-sm);
  font: inherit;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  background: transparent;
  cursor: pointer;
  transition: color var(--transition), background var(--transition);
}
.nav-dropdown-toggle:hover {
  color: var(--text);
  background: var(--border);
}
.nav-dropdown-toggle::after {
  content: '';
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid currentColor;
  opacity: 0.7;
}
.nav-dropdown.open .nav-dropdown-toggle,
.nav-dropdown:hover .nav-dropdown-toggle {
  color: var(--text);
}
.nav-dropdown.open .nav-dropdown-toggle {
  color: var(--accent);
  background: var(--accent-glow);
}
.nav-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 180px;
  margin-top: 0.25rem;
  padding: 0.35rem 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  z-index: 50;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
}
.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown.open .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.nav-dropdown-menu a {
  display: block;
  padding: 0.5rem 1rem;
  border-radius: 0;
  font-size: 0.9rem;
  white-space: nowrap;
  border: none;
  background: transparent;
}
.nav-dropdown-menu a:hover {
  background: var(--bg-hover);
}
.nav-dropdown-menu a.active {
  color: var(--accent);
  background: var(--accent-glow);
}
.nav .nav-dropdown-menu a {
  color: var(--text-muted);
}

/* Cards */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1.75rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.card:hover { border-color: var(--border-strong); }
.card h1, .card h2 {
  margin: 0 0 1rem;
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.6rem 1.15rem;
  border-radius: var(--radius-sm);
  border: none;
  font: inherit;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn-primary {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-hover) 100%);
  color: #fff;
  box-shadow: 0 4px 14px var(--accent-glow);
}
.btn-primary:hover {
  box-shadow: 0 6px 20px var(--accent-glow);
}
.btn-secondary {
  background: var(--bg-card-hover);
  color: var(--text);
  border: 1px solid var(--border-strong);
}
.btn-secondary:hover { background: var(--border-strong); }
.btn-danger {
  background: var(--danger);
  color: #fff;
}
.btn-danger:hover { filter: brightness(1.1); }
.btn-sm {
  padding: 0.4rem 0.85rem;
  font-size: 0.85rem;
}
.btn-sm:hover { transform: none; }

/* Forms */
.form-group { margin-bottom: 1.25rem; }
.form-group label {
  display: block;
  margin-bottom: 0.4rem;
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 500;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  max-width: 420px;
  padding: 0.7rem 1rem;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font: inherit;
  font-size: 0.95rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-faint); }
.form-group textarea { min-height: 110px; resize: vertical; }
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

/* Alerts */
.alert {
  padding: 1rem 1.25rem;
  border-radius: var(--radius-sm);
  margin-bottom: 1.25rem;
  font-weight: 500;
  border: 1px solid transparent;
}
.alert-success {
  background: var(--success-dim);
  border-color: rgba(34, 197, 94, 0.3);
  color: #86efac;
}
.alert-error {
  background: var(--danger-dim);
  border-color: rgba(239, 68, 68, 0.3);
  color: #fca5a5;
}
.alert-info {
  background: var(--accent-glow);
  border-color: rgba(59, 130, 246, 0.3);
  color: #93c5fd;
}

/* Tables */
.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}
table { width: 100%; border-collapse: collapse; }
th, td {
  padding: 0.85rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
th {
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background: var(--bg-elevated);
}
tr:last-child td { border-bottom: none; }
tr:hover td { background: var(--bg-card-hover); }
.actions { display: flex; gap: 0.5rem; flex-wrap: wrap; align-items: center; }

/* Badges */
.badge {
  display: inline-block;
  padding: 0.25rem 0.6rem;
  border-radius: 6px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}
.badge-success { background: var(--success-dim); color: #4ade80; }
.badge-warning { background: var(--warning-dim); color: #fbbf24; }
.badge-danger { background: var(--danger-dim); color: #f87171; }
.badge-muted { background: var(--bg-card-hover); color: var(--text-muted); }

/* Login */
.login-wrap {
  min-height: 85vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}
.login-card {
  width: 100%;
  max-width: 420px;
  box-shadow: var(--shadow-lg);
}
.login-card h1 {
  text-align: center;
  margin-bottom: 1.75rem;
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.03em;
}

/* Grid */
.grid { display: grid; gap: 1.25rem; }
@media (min-width: 640px) { .grid-2 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 900px) { .grid-3 { grid-template-columns: repeat(3, 1fr); } }

/* Stats cards (dashboard) */
.grid .card {
  transition: transform var(--transition), box-shadow var(--transition);
}
.grid .card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* Utils */
.text-muted { color: var(--text-muted); }
.mb-0 { margin-bottom: 0; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.flex { display: flex; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.flex-wrap { flex-wrap: wrap; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }

/* Checkboxes */
.checkbox-group { display: flex; flex-wrap: wrap; gap: 0.75rem 1.5rem; }
.checkbox-group label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  color: var(--text-muted);
  font-weight: 500;
}

/* Select inline in table */
table select {
  padding: 0.35rem 0.6rem;
  font-size: 0.85rem;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  cursor: pointer;
}
table select:focus { outline: none; border-color: var(--accent); }

/* Dividers */
hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 1.5rem 0;
}

.hidden { display: none !important; }

/* Modal */
.modal {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 100;
  max-width: 420px;
  width: 90%;
  box-shadow: var(--shadow-lg);
}
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 99;
  backdrop-filter: blur(4px);
}

/* Responsive */
@media (max-width: 640px) {
  .header-inner { flex-direction: column; align-items: stretch; }
  .nav { justify-content: flex-start; }
  .card { padding: 1.25rem; }
  .form-group input, .form-group select, .form-group textarea { max-width: 100%; }
}