:root {
  --wav-primary: #6c5ce7;
  --wav-primary-dark: #5a4bd1;
  --wav-secondary: #00d2ff;
  --wav-bg: #f4f6fb;
  --wav-sidebar: #1a1e2e;
  --wav-sidebar-hover: #252a3f;
  --wav-text: #2d3436;
}

* { box-sizing: border-box; }

body {
  font-family: 'Segoe UI', Tahoma, sans-serif;
  background: var(--wav-bg);
  color: var(--wav-text);
  margin: 0;
}

.admin-wrapper { display: flex; min-height: 100vh; }

/* ===== Sidebar ===== */
.sidebar {
  width: 250px;
  background: var(--wav-sidebar);
  color: #fff;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  overflow-y: auto;
  z-index: 100;
  transition: margin-left 0.3s;
}
.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 20px;
  font-size: 1.2rem;
  font-weight: 700;
  border-bottom: 1px solid #2d3245;
}
.sidebar-brand i { color: var(--wav-secondary); font-size: 1.5rem; }
.sidebar-menu { list-style: none; padding: 10px 0; margin: 0; }
.sidebar-menu li a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 20px;
  color: #aab;
  text-decoration: none;
  font-size: 0.9rem;
  transition: all 0.2s;
  border-left: 3px solid transparent;
}
.sidebar-menu li a:hover, .sidebar-menu li a.active {
  background: var(--wav-sidebar-hover);
  color: #fff;
  border-left-color: var(--wav-secondary);
}
.sidebar-menu li a i { width: 20px; text-align: center; }
.menu-group {
  padding: 12px 20px 6px;
  font-size: 0.7rem;
  text-transform: uppercase;
  color: #6a6f85;
  letter-spacing: 1px;
}

/* ===== Main ===== */
.admin-main {
  flex: 1;
  margin-left: 250px;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}
.admin-topbar {
  background: #fff;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  box-shadow: 0 1px 3px rgba(0,0,0,0.08);
  position: sticky;
  top: 0;
  z-index: 90;
}
.admin-content { padding: 24px; flex: 1; }

/* Cards & stats */
.stat-card { border-radius: 12px; padding: 20px; color: #fff; box-shadow: 0 4px 12px rgba(0,0,0,0.1); }
.stat-card .stat-icon { font-size: 2rem; opacity: 0.8; }
.stat-card .stat-value { font-size: 1.8rem; font-weight: 700; }
.stat-card .stat-label { opacity: 0.9; font-size: 0.85rem; }

.card { border: none; border-radius: 12px; box-shadow: 0 2px 8px rgba(0,0,0,0.06); }
.card-header { background: #fff; border-bottom: 1px solid #eee; font-weight: 600; }

.btn-primary { background: var(--wav-primary); border-color: var(--wav-primary); }
.btn-primary:hover { background: var(--wav-primary-dark); border-color: var(--wav-primary-dark); }

.table thead th { background: #f8f9fc; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.5px; }

.form-control:focus { border-color: var(--wav-primary); box-shadow: 0 0 0 0.2rem rgba(108,92,231,0.15); }

/* Login page */
.login-wrapper {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--wav-sidebar) 0%, #2d3436 100%);
}
.login-card {
  width: 100%;
  max-width: 420px;
  background: #fff;
  border-radius: 16px;
  padding: 40px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}
.login-logo {
  text-align: center;
  margin-bottom: 24px;
}
.login-logo i { font-size: 3rem; background: linear-gradient(135deg, var(--wav-primary), var(--wav-secondary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.login-logo h3 { font-weight: 700; margin-top: 10px; }

/* Auth pages */
.auth-container { min-height: 100vh; display: flex; align-items: center; justify-content: center; }

/* Media manager */
.media-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 16px; }
.media-item { border: 1px solid #eee; border-radius: 8px; overflow: hidden; background: #fff; }
.media-item img { width: 100%; height: 120px; object-fit: cover; }

/* Responsive */
@media (max-width: 768px) {
  .sidebar { margin-left: -250px; }
  .sidebar.show { margin-left: 0; }
  .admin-main { margin-left: 0; }
}