:root {
  --primary: #1E40AF;
  --primary-dark: #1E3A8A;
  --primary-light: #DBEAFE;
  --accent: #FBBF24;
  --sidebar-bg: #060F1A;
  --sidebar-active: rgba(30,64,175,.15);
  --sidebar-text: #B8C5D6;
  --sidebar-text-active: #fff;
  --bg: #0F1B2D;
  --card: #1A2942;
  --border: #2A3854;
  --text: #fff;
  --text-muted: #B8C5D6;
  --shadow-sm: 0 1px 4px rgba(0,0,0,.25);
  --shadow: 0 4px 16px rgba(0,0,0,.35);
  --radius: 10px;
}

* { box-sizing: border-box; }
.admin-body { font-family: 'Inter', sans-serif; background: var(--bg); color: #fff; margin: 0; padding: 0; }

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

/* === SIDEBAR === */
.admin-sidebar { width: 260px; background: var(--sidebar-bg); color: var(--sidebar-text); display: flex; flex-direction: column; position: fixed; top: 0; left: 0; height: 100vh; transition: transform .3s; z-index: 100; border-right: 1px solid #1A2942; }
.admin-brand { display: flex; align-items: center; gap: .75rem; padding: 1.5rem 1.25rem; border-bottom: 1px solid rgba(255,255,255,.06); }
.admin-brand .brand-mark { background: var(--primary); color: #fff; padding: .35rem .65rem; border-radius: 6px; font-weight: 800; letter-spacing: 1px; font-size: .9rem; }
.admin-brand .brand-text { color: #fff; font-weight: 600; font-size: 1.1rem; }
.admin-nav { flex: 1; overflow-y: auto; padding: 1rem 0; }
.admin-nav a { display: flex; align-items: center; gap: .75rem; padding: .65rem 1.5rem; color: var(--sidebar-text); text-decoration: none; font-size: .9rem; border-left: 3px solid transparent; transition: all .2s; }
.admin-nav a i { font-size: 1rem; width: 18px; }
.admin-nav a:hover { background: rgba(255,255,255,.04); color: #fff; }
.admin-nav a.active { background: var(--sidebar-active); color: var(--sidebar-text-active); border-left-color: var(--primary); font-weight: 600; }
.nav-section { padding: 1rem 1.5rem .35rem; font-size: .7rem; text-transform: uppercase; letter-spacing: 1.5px; color: rgba(255,255,255,.35); }

.admin-foot { padding: 1rem; border-top: 1px solid rgba(255,255,255,.06); }
.user-pill { display: flex; align-items: center; gap: .65rem; padding: .5rem; background: rgba(255,255,255,.04); border-radius: 8px; }
.user-pill .avatar { width: 36px; height: 36px; background: var(--primary); color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 700; }
.user-pill div { color: #fff; }
.user-pill a { color: var(--sidebar-text); text-decoration: none; }

/* === MAIN === */
.admin-main { margin-left: 260px; flex: 1; min-width: 0; }
.admin-topbar { background: #1A2942; padding: 1rem 2rem; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; gap: 1rem; box-shadow: var(--shadow-sm); position: sticky; top: 0; z-index: 50; }
.admin-page-title { font-size: 1.4rem; font-weight: 700; margin: 0; color: #fff; }
.admin-content { padding: 1.5rem 2rem; }
.admin-messages { padding: 0 2rem; margin-top: 1rem; }
.sidebar-toggle { font-size: 1.5rem; padding: 0; color: #fff; }

/* === KPI CARDS === */
.kpi-card { background: var(--card); border-radius: var(--radius); padding: 1.25rem; box-shadow: var(--shadow-sm); display: flex; align-items: center; gap: 1rem; }
.kpi-icon { width: 56px; height: 56px; border-radius: 50%; display: flex; align-items: center; justify-content: center; color: #fff; font-size: 1.5rem; flex-shrink: 0; }
.kpi-label { font-size: .8rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: .5px; font-weight: 600; }
.kpi-value { font-size: 1.6rem; font-weight: 800; line-height: 1.1; color: var(--text); }

/* === PANELS / CARDS === */
.card-panel { background: var(--card); border-radius: var(--radius); padding: 1.5rem; box-shadow: var(--shadow-sm); margin-bottom: 1.5rem; }
.card-panel h5 { font-weight: 700; margin-bottom: 1rem; color: var(--text); }

/* Bootstrap card overrides — dark navy cards on dark bg */
.card { background: var(--card); border-color: var(--border); color: var(--text); }
.card-header { background: #2A3854; border-bottom-color: var(--border); color: var(--text); font-weight: 600; }
.card-footer { background: #2A3854; border-top-color: var(--border); color: var(--text-muted); }

/* === TABLES === */
.table { color: var(--text); --bs-table-bg: #1A2942; }
.table-light { --bs-table-bg: #2A3854; color: var(--text); }
.table-hover > tbody > tr:hover { --bs-table-accent-bg: #2A3854; }
.table > :not(caption) > * > * { padding: .9rem; }
.table thead th { font-size: .8rem; text-transform: uppercase; letter-spacing: .5px; color: var(--text-muted); font-weight: 600; border-bottom: 2px solid #2A3854; }

/* === FORMS === */
.form-control, .form-select { background: #fff; color: #0F1B2D; border-color: #ced4da; }
.form-control:focus, .form-select:focus { border-color: var(--primary); box-shadow: 0 0 0 .2rem rgba(30,64,175,.2); background: #fff; color: #0F1B2D; }
.form-label { color: var(--text); }

/* === BADGES === */
.badge.bg-success { background-color: var(--primary) !important; color: #fff !important; }
.badge.bg-primary { background-color: #1A2942 !important; color: #fff !important; }

/* === BUTTONS === */
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; font-weight: 600; }
.btn-primary:hover, .btn-primary:focus { background: var(--primary-dark); border-color: var(--primary-dark); color: #fff; }
.btn-outline-primary { color: var(--primary); border-color: var(--primary); }
.btn-outline-primary:hover { background: var(--primary); border-color: var(--primary); color: #fff; }

/* === LOGIN PAGE === */
.login-page { background: linear-gradient(135deg, #060F1A 0%, #1A2942 100%); min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 1rem; font-family: 'Inter'; }
.login-card { background: #fff; padding: 2.5rem; border-radius: var(--radius); box-shadow: 0 12px 40px rgba(0,0,0,.5); width: 100%; max-width: 400px; }
.login-card .brand-mark { display: flex; align-items: center; justify-content: center; background: var(--primary); color: #fff; border-radius: 50%; font-weight: 800; }
.login-card h2, .login-card h3, .login-card h4, .login-card h5, .login-card label, .login-card p { color: #0F1B2D; }
.login-card .form-control { color: #0F1B2D; }

/* === NAV TABS === */
.nav-tabs .nav-link.active { color: var(--primary); border-bottom-color: var(--primary); }

/* === ALERTS === */
.alert { border-radius: var(--radius); }

/* === PAGINATION === */
.page-link { color: var(--primary); }
.page-item.active .page-link { background-color: var(--primary); border-color: var(--primary); color: #fff; }

/* === RESPONSIVE === */
@media (max-width: 991.98px) {
  .admin-sidebar { transform: translateX(-100%); }
  .admin-main { margin-left: 0; }
  body.sidebar-open .admin-sidebar { transform: translateX(0); }
  body.sidebar-open::after { content: ''; position: fixed; inset: 0; background: rgba(0,0,0,.6); z-index: 99; }
  .admin-content { padding: 1rem; }
}