:root {
    --navy: #003366;
    --navy-dark: #002244;
    --gold: #D4A843;
    --gold-light: #E8C97A;
    --sidebar-width: 260px;
    --navbar-height: 56px;
}

* { box-sizing: border-box; }

body {
    font-family: 'Inter', sans-serif;
    background-color: #f0f2f5;
    margin: 0;
    padding: 0;
    min-height: 100vh;
}

.text-gold { color: var(--gold) !important; }
.bg-navy { background-color: var(--navy) !important; }

/* ===== NAVBAR ===== */
.main-navbar {
    background: linear-gradient(135deg, var(--navy-dark), var(--navy));
    height: var(--navbar-height);
    z-index: 1040;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

/* ===== SIDEBAR ===== */
.sidebar {
    position: fixed;
    top: var(--navbar-height);
    left: 0;
    width: var(--sidebar-width);
    height: calc(100vh - var(--navbar-height));
    background: linear-gradient(180deg, var(--navy-dark) 0%, var(--navy) 100%);
    overflow-y: auto;
    z-index: 1030;
    transition: transform 0.3s ease;
    display: flex;
    flex-direction: column;
}

.sidebar-nav {
    flex: 1;
    padding: 0.5rem 0;
}

.sidebar-nav .nav-link {
    color: #b0bec5;
    padding: 12px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s;
    border-left: 3px solid transparent;
    margin: 2px 8px;
    border-radius: 8px;
}

.sidebar-nav .nav-link:hover {
    color: #fff;
    background: rgba(255,255,255,0.08);
}

.sidebar-nav .nav-link.active {
    color: var(--gold);
    background: rgba(212, 168, 67, 0.12);
    border-left-color: var(--gold);
    font-weight: 600;
}

.sidebar-nav .nav-link i {
    font-size: 18px;
    width: 24px;
    text-align: center;
}

.sidebar-footer {
    padding: 12px 20px;
    text-align: center;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 1025;
}

/* ===== WRAPPER / CONTENT ===== */
.wrapper {
    display: flex;
    min-height: calc(100vh - var(--navbar-height));
    padding-top: var(--navbar-height);
}

.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: 24px;
    min-height: calc(100vh - var(--navbar-height) - 50px);
    transition: margin-left 0.3s ease;
}

/* ===== FOOTER ===== */
.main-footer {
    background: var(--navy-dark);
    color: #b0bec5;
    padding: 14px 24px;
    font-size: 13px;
    margin-left: var(--sidebar-width);
    transition: margin-left 0.3s ease;
}

/* ===== CARDS ===== */
.stat-card {
    border: none;
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
    transition: transform 0.2s;
}

.stat-card:hover {
    transform: translateY(-2px);
}

.stat-card .card-body {
    padding: 20px;
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
}

/* ===== TABLE ===== */
.table-card {
    border: none;
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
    overflow: hidden;
}

.table thead th {
    background: var(--navy);
    color: #fff;
    font-weight: 600;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 14px 16px;
    border: none;
    white-space: nowrap;
}

.table tbody td {
    padding: 12px 16px;
    vertical-align: middle;
    font-size: 14px;
}

.table tbody tr:hover {
    background-color: #f8f9fa;
}

/* ===== BUTTONS ===== */
.btn-navy {
    background: var(--navy);
    color: #fff;
    border: none;
    font-weight: 600;
}

.btn-navy:hover {
    background: var(--navy-dark);
    color: #fff;
}

.btn-gold {
    background: var(--gold);
    color: var(--navy-dark);
    border: none;
    font-weight: 600;
}

.btn-gold:hover {
    background: var(--gold-light);
    color: var(--navy-dark);
}

/* ===== FORMS ===== */
.form-card {
    border: none;
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}

.form-label {
    font-weight: 600;
    font-size: 13px;
    color: #555;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    margin-bottom: 6px;
}

.form-control:focus, .form-select:focus {
    border-color: var(--gold);
    box-shadow: 0 0 0 0.2rem rgba(212, 168, 67, 0.25);
}

/* ===== BADGE ===== */
.badge-active {
    background-color: #28a745;
    color: #fff;
    font-weight: 500;
    padding: 5px 12px;
    border-radius: 20px;
}

.badge-inactive {
    background-color: #dc3545;
    color: #fff;
    font-weight: 500;
    padding: 5px 12px;
    border-radius: 20px;
}

/* ===== FLASH MESSAGES ===== */
.flash-message {
    border-radius: 10px;
    border: none;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

/* ===== PAGE HEADER ===== */
.page-header {
    margin-bottom: 24px;
}

.page-header h4 {
    font-weight: 700;
    color: var(--navy);
    margin: 0;
}

.page-header .breadcrumb {
    margin: 0;
    font-size: 13px;
}

/* ===== LOGIN PAGE ===== */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--navy-dark) 0%, var(--navy) 50%, #004080 100%);
}

.login-card {
    width: 100%;
    max-width: 420px;
    border: none;
    border-radius: 16px;
    box-shadow: 0 8px 40px rgba(0,0,0,0.3);
    overflow: hidden;
}

.login-header {
    background: var(--navy-dark);
    padding: 30px;
    text-align: center;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 767.98px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.show {
        transform: translateX(0);
    }

    .sidebar-overlay.show {
        display: block;
    }

    .main-content {
        margin-left: 0;
        padding: 16px;
    }

    .main-footer {
        margin-left: 0;
    }

    .table-responsive {
        font-size: 13px;
    }
}

@media (max-width: 575.98px) {
    .main-content {
        padding: 12px;
    }

    .stat-card .card-body {
        padding: 14px;
    }

    .page-header h4 {
        font-size: 18px;
    }
}