:root {
    --primary-color: #0d457e;
    --primary-dark: #093563;
    --primary-light: #1056a1;
    --secondary-color: #1e40af;
    --success-color: #059669;
    --danger-color: #dc2626;
    --warning-color: #d97706;
    --info-color: #0891b2;
    --light-color: #f3f4f6;
    --dark-color: #1f2937;
}

body {
    background-color: #f8fafc;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* Login Page */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
}

.login-box {
    background: #fff;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
}

.login-box h2 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

/* Main App */
.navbar {
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.navbar-brand {
    font-weight: 600;
}

.card {
    border: none;
    border-radius: 0.75rem;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    margin-bottom: 1.5rem;
}

.card-title {
    color: var(--dark-color);
    font-weight: 600;
    margin-bottom: 1.25rem;
}

/* Tables */
.table {
    margin-bottom: 0;
}

.table th {
    background-color: var(--light-color);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
}

.table td {
    vertical-align: middle;
}

/* Forms */
.form-control, .form-select {
    border-radius: 0.5rem;
    border: 1px solid #e5e7eb;
    padding: 0.625rem 1rem;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(13, 69, 126, 0.25);
}

.form-floating label {
    padding: 1rem;
}

/* Buttons */
.btn {
    padding: 0.625rem 1.25rem;
    border-radius: 0.5rem;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

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

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

/* Alerts */
.alert {
    border: none;
    border-radius: 0.5rem;
    padding: 1rem;
}

/* Modals */
.modal-content {
    border: none;
    border-radius: 1rem;
}

.modal-header {
    border-bottom: 1px solid #e5e7eb;
    padding: 1.25rem;
}

.modal-body {
    padding: 1.25rem;
}

.modal-footer {
    border-top: 1px solid #e5e7eb;
    padding: 1.25rem;
}

/* Utilities */
.page {
    animation: fadeIn 0.3s ease-in-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive */
@media (max-width: 768px) {
    .login-box {
        margin: 1rem;
    }
    
    .card {
        margin-bottom: 1rem;
    }
    
    .table-responsive {
        margin-bottom: 0;
    }
}

.navbar-dark.bg-primary {
    background-color: var(--primary-color) !important;
}

.nav-link.active {
    background-color: var(--primary-dark) !important;
}

.table-primary {
    background-color: rgba(13, 69, 126, 0.1) !important;
}