:root {
    --primary-color: #1e40af;
    --primary-dark: #1e3a8a;
    --bg-light: #f1f5f9;
    --border-color: #cbd5e1;
    --text-dark: #0f172a;
    --text-light: #475569;
    --card-bg: #ffffff;
    --card-elevate: rgba(30, 64, 175, 0.15);
    --info-color: #0284c7;
    --warning-color: #f59e0b;
    --success-color: #16a34a;
    --danger-color: #dc2626;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-light);
    color: var(--text-dark);
}

* {
    color: var(--text-dark) !important;
}

/* Navbar */
.navbar {
    box-shadow: 0 1px 3px var(--card-elevate);
    background: linear-gradient(135deg, #0f172a 0%, #111827 100%);
}

.navbar-brand,
.navbar-nav .nav-link,
.btn-link {
    color: #ffffff !important;
    font-weight: 600;
}

.navbar-brand:hover,
.navbar-nav .nav-link:hover,
.btn-link:hover {
    color: #a5b4fc !important;
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem !important;
}

/* Container */
.container {
    background-color: var(--card-bg);
    border-radius: 10px;
    box-shadow: 0 1px 7px var(--card-elevate);
    margin-top: 2rem;
    margin-bottom: 2rem;
    border: 1px solid var(--border-color);
    padding: 2rem;
}

/* Typography */
h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--text-dark);
}

h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

/* Dashboard Cards */
.card {
    border: none;
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    transition: transform 0.2s, box-shadow 0.2s;

}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.card-body {
    padding: 2rem;
}

.card-header {
    background-color: var(--bg-light);
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
    color: var(--text-dark);
}

.card.text-white {
    border-radius: 8px;
    padding: 1.5rem;
}

.card.bg-primary {
    background: linear-gradient(135deg, #81c784 0%, #66bb6a 100%) !important;
}

.card.bg-warning {
    background: linear-gradient(135deg, #ffe082 0%, #ffb300 100%) !important;
}

.card.bg-info {
    background: linear-gradient(135deg, #81d4fa 0%, #29b6f6 100%) !important;
}

.card.bg-success {
    background: linear-gradient(135deg, #a5d6a7 0%, #66bb6a 100%) !important;
}

.card h5 {
    font-weight: 600;
    margin-bottom: 1rem;
    opacity: 0.9;
}

.card h2 {
    margin-bottom: 0.5rem;
    font-size: 2.5rem;
}

/* Buttons */
.btn {
    border-radius: 6px;
    font-weight: 500;
    padding: 0.5rem 1rem;
    transition: all 0.2s;
    border: none;
}

.btn-primary {
    background-color: var(--primary-color);
    color: #ffffff !important;
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(79, 70, 229, 0.3);
    color: white;
}

.btn-success {
    background-color: #10b981;
}

.btn-success:hover {
    background-color: #059669;
    transform: translateY(-2px);
    color: white;
}

.btn-warning {
    background-color: #f59e0b;
    color: white;
}

.btn-warning:hover {
    background-color: #d97706;
    transform: translateY(-2px);
    color: white;
}

.btn-danger {
    background-color: #ef4444;
    color: white;
}

.btn-danger:hover {
    background-color: #dc2626;
    transform: translateY(-2px);
    color: white;
}

.btn-secondary {
    background-color: #6b7280;
    color: white;
}

.btn-secondary:hover {
    background-color: #4b5563;
    color: white;
}

.btn-link {
    color: white;
    font-weight: 500;
    transition: opacity 0.2s;
}

.btn-link:hover {
    color: #f0f0f0;
    opacity: 0.9;
}

.btn-sm {
    padding: 0.25rem 0.75rem;
    font-size: 0.875rem;
}

/* Tables */
table {
    margin-top: 1rem;
    margin-bottom: 1rem;
}

.table {
    border-collapse: collapse;
}

.table thead {
    background-color: var(--bg-light);
    border-bottom: 2px solid var(--border-color);
}

.table th {
    font-weight: 600;
    color: var(--text-dark);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 1rem;
}

.table td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-light);
}

.table tbody tr {
    transition: background-color 0.2s;
}

.table tbody tr:hover {
    background-color: var(--bg-light);
}

/* Badges */
.badge {
    padding: 0.5rem 0.75rem;
    border-radius: 20px;
    font-weight: 500;
    font-size: 0.75rem;
}

.badge.bg-warning {
    background-color: #fcd34d !important;
    color: #78350f;
}

.badge.bg-info {
    background-color: #a5f3fc !important;
    color: #0c4a6e;
}

.badge.bg-success {
    background-color: #86efac !important;
    color: #15803d;
}

/* Forms */
.form-label {
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.form-control,
.form-select {
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 0.9375rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.form-control::placeholder {
    color: var(--text-light);
}

.form-group {
    margin-bottom: 1.5rem;
}

/* Alerts */
.alert {
    border-radius: 6px;
    border: none;
    margin-bottom: 1.5rem;
}

.alert-success {
    background-color: #d1fae5;
    color: #065f46;
}

.alert-danger {
    background-color: #fee2e2;
    color: #7f1d1d;
}

.text-danger {
    color: #dc2626;
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

/* Layout */
.d-flex {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.justify-content-between {
    justify-content: space-between;
}

.mb-3 {
    margin-bottom: 1rem !important;
}

/* Login Page */
body.bg-light {
    background: linear-gradient(135deg, #e0e7ff 0%, #f1f5f9 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-container .card {
    background: #ffffff;
    border: 1px solid #cbd5e1;
    box-shadow: 0 12px 30px rgba(30, 64, 175, 0.15);
}

.login-container .card-header {
    background: linear-gradient(135deg, #a3d5a5 0%, #6cbd70 100%);
    color: #ffffff;
    font-weight: 700;
    text-align: center;
    padding: 1.5rem;
}

.login-container .card-body {
    color: #0f172a;
}

.login-container .form-control {
    background-color: #f8fafc;
    border: 1px solid #cbd5e1;
    color: #0f172a;
}

.login-container .form-control:focus {
    border-color: #1e40af;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.login-container .btn-login {
    background: #6cbd70;
    color: #ffffff;
    border: none;
}

.login-container .btn-login:hover {
    background: #a3d5a5;
}

/* Pagination */
.pagination {
    margin-top: 2rem;
}

.page-link {
    color: var(--primary-color);
    border-color: var(--border-color);
    border-radius: 4px;
    margin: 0 2px;
}

.page-link:hover {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.page-item.active .page-link {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }

    h1 {
        font-size: 1.5rem;
    }

    .card h2 {
        font-size: 1.75rem;
    }

    .d-flex {
        flex-direction: column;
        align-items: stretch;
    }

    .form-select {
        margin-bottom: 0.5rem;
    }

    table {
        font-size: 0.875rem;
    }

    .btn {
        padding: 0.4rem 0.8rem;
        font-size: 0.875rem;
    }
}

.dashboard-stats {
    margin-top: 2rem;
    margin-bottom: 2rem;
}

.dashboard-stats .col-md-6,
.dashboard-stats .col-lg-3 {
    margin-bottom: 2rem;
}