/* Main Styles */
:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --light-gray: #f8f9fa;
    --border-color: #dee2e6;
}

body {
    background-color: #f5f6fa;
    font-family: 'Poppins', sans-serif;
    color: #2c3e50;
}

/* Header Styles */
.site-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    padding: 1rem 0;
    margin-bottom: 2rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.site-header .navbar-brand {
    color: white;
    font-size: 1.5rem;
    font-weight: 600;
}

.site-header .navbar-nav .nav-link {
    color: rgba(255,255,255,0.9);
    font-weight: 500;
    padding: 0.5rem 1rem;
    transition: all 0.3s ease;
}

.site-header .navbar-nav .nav-link:hover {
    color: white;
    background: rgba(255,255,255,0.1);
    border-radius: 4px;
}

/* Card Styles */
.card {
    border: none;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(0,0,0,0.05);
}

.card-header {
    background: white;
    border-bottom: 2px solid var(--border-color);
    padding: 1.25rem;
}

.card-header h2 {
    margin: 0;
    font-size: 1.5rem;
    color: var(--primary-color);
}

.card-body {
    padding: 1.5rem;
}

/* Form Styles */
.form-label {
    font-weight: 500;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.form-control {
    border-radius: 6px;
    border: 1px solid var(--border-color);
    padding: 0.6rem 1rem;
    transition: all 0.3s ease;
}

.form-control:focus {
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 0.2rem rgba(52, 152, 219, 0.25);
}

.form-select {
    border-radius: 6px;
}

/* Section Headers */
h4.section-header {
    color: var(--secondary-color);
    font-size: 1.2rem;
    font-weight: 600;
    margin: 1.5rem 0 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--border-color);
}

/* Buttons */
.btn {
    padding: 0.6rem 1.5rem;
    border-radius: 6px;
    font-weight: 500;
    transition: all 0.3s ease;
}

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

.btn-primary:hover {
    background-color: #2980b9;
    border-color: #2980b9;
}

.btn-secondary {
    background-color: #95a5a6;
    border-color: #95a5a6;
}

/* Form Groups */
.form-group {
.btn-secondary:hover {
    background-color: #5c636a;
    border-color: #565e64;
}

/* Form validation styles */
.was-validated .form-control:valid,
.was-validated .form-select:valid {
    border-color: #198754;
    padding-right: calc(1.5em + 0.75rem);
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 8'%3e%3cpath fill='%23198754' d='M2.3 6.73L.6 4.53c-.4-1.04.46-1.4 1.1-.8l1.1 1.4 3.4-3.8c.6-.63 1.6-.27 1.2.7l-4 4.6c-.43.5-.8.4-1.1.1z'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right calc(0.375em + 0.1875rem) center;
    background-size: calc(0.75em + 0.375rem) calc(0.75em + 0.375rem);
}

.was-validated .form-control:invalid,
.was-validated .form-select:invalid {
    border-color: #dc3545;
    padding-right: calc(1.5em + 0.75rem);
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12' width='12' height='12' fill='none' stroke='%23dc3545'%3e%3ccircle cx='6' cy='6' r='4.5'/%3e%3cpath stroke-linejoin='round' d='M5.8 3.6h.4L6 6.5z'/%3e%3ccircle cx='6' cy='8.2' r='.6' fill='%23dc3545' stroke='none'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right calc(0.375em + 0.1875rem) center;
    background-size: calc(0.75em + 0.375rem) calc(0.75em + 0.375rem);
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    .card-body {
        padding: 1rem;
    }
    
    .btn {
        width: 100%;
        margin-bottom: 0.5rem;
    }
    
    .d-flex.justify-content-between {
        flex-direction: column;
    }
}