/* Custom Variables */
:root {
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --success-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --warning-gradient: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    --dark-bg: #121212;
    --light-bg: #f8f9fa;
}

/* General Styles */
body {
    font-family: 'Inter', sans-serif;
    background-color: var(--light-bg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Headings */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
}

/* Navbar Customization */
.navbar-brand {
    font-family: 'Poppins', sans-serif;
    font-weight: 700;
    font-size: 1.5rem;
}

.navbar-dark .navbar-nav .nav-link {
    transition: all 0.3s ease;
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
}

    .navbar-dark .navbar-nav .nav-link:hover {
        background-color: rgba(255, 255, 255, 0.1);
        transform: translateY(-2px);
    }

    .navbar-dark .navbar-nav .nav-link.active {
        background-color: rgba(255, 255, 255, 0.15);
        font-weight: 500;
    }

/* Page Header */
.page-header {
    background: var(--primary-gradient);
    margin-bottom: 2rem;
    position: relative;
    overflow: hidden;
}

    .page-header::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="rgba(255,255,255,0.1)" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,112C672,96,768,96,864,112C960,128,1056,160,1152,160C1248,160,1344,128,1392,112L1440,96L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>');
        background-size: cover;
        opacity: 0.5;
    }

/* Cards */
.card {
    border: none;
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border-radius: 0.75rem;
    overflow: hidden;
}

    .card:hover {
        transform: translateY(-5px);
        box-shadow: 0 1rem 3rem rgba(0, 0, 0, 0.175);
    }

.card-header {
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    border-bottom: none;
    padding: 1.25rem 1.5rem;
}

.card-body {
    padding: 1.5rem;
}

/* Buttons */
.btn {
    border-radius: 0.5rem;
    font-weight: 500;
    padding: 0.5rem 1.5rem;
    transition: all 0.3s ease;
    border: none;
}

.btn-primary {
    background: var(--primary-gradient);
    border: none;
}

    .btn-primary:hover {
        background: linear-gradient(135deg, #5a67d8 0%, #6b46c1 100%);
        transform: translateY(-2px);
        box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
    }

.btn-outline-primary {
    border: 2px solid #667eea;
    color: #667eea;
}

    .btn-outline-primary:hover {
        background: var(--primary-gradient);
        border-color: transparent;
    }

.btn-lg {
    padding: 0.75rem 2rem;
    font-size: 1.1rem;
}

.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

/* Form Styling */
.form-control, .form-select {
    border-radius: 0.5rem;
    padding: 0.75rem 1rem;
    border: 2px solid #e2e8f0;
    transition: all 0.3s ease;
    font-size: 0.95rem;
}

    .form-control:focus, .form-select:focus {
        border-color: #667eea;
        box-shadow: 0 0 0 0.25rem rgba(102, 126, 234, 0.25);
        transform: translateY(-2px);
    }

.form-label {
    font-weight: 500;
    color: #4a5568;
    margin-bottom: 0.5rem;
}

.input-group-text {
    border-radius: 0.5rem;
    background-color: #f7fafc;
    border: 2px solid #e2e8f0;
}

/* Custom File Input */
.custom-file-label::after {
    background: var(--primary-gradient);
    border: none;
    color: white;
    font-weight: 500;
}

/* Loading Spinner */
.spinner-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.spinner-container {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    text-align: center;
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
}

/* Badges */
.badge {
    padding: 0.35em 0.65em;
    font-weight: 500;
    border-radius: 0.375rem;
}

/* Tables */
.table {
    border-radius: 0.75rem;
    overflow: hidden;
}

    .table thead th {
        background-color: #f8f9fa;
        border-bottom: 2px solid #dee2e6;
        font-weight: 600;
        color: #4a5568;
        padding: 1rem;
    }

    .table tbody td {
        padding: 1rem;
        vertical-align: middle;
    }

.table-striped tbody tr:nth-of-type(odd) {
    background-color: rgba(0, 0, 0, 0.02);
}

/* Footer */
.footer {
    margin-top: auto;
}

    .footer a {
        transition: color 0.3s ease;
    }

        .footer a:hover {
            color: #fff !important;
            text-decoration: underline;
        }

/* Breadcrumb */
.breadcrumb {
    background-color: transparent;
    padding: 0;
    margin-bottom: 0;
}

.breadcrumb-item a {
    text-decoration: none;
    color: #6c757d;
}

.breadcrumb-item.active {
    color: #4a5568;
    font-weight: 500;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    .navbar-brand {
        font-size: 1.25rem;
    }

    .page-header h1 {
        font-size: 2rem;
    }

    .card-body {
        padding: 1rem;
    }

    .btn {
        padding: 0.375rem 1rem;
    }

    .form-control, .form-select {
        padding: 0.5rem 0.75rem;
    }
}

/* Print Styles */
@media print {
    .no-print {
        display: none !important;
    }

    .card {
        box-shadow: none;
        border: 1px solid #dee2e6;
    }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 5px;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 5px;
}

    ::-webkit-scrollbar-thumb:hover {
        background: linear-gradient(135deg, #5a67d8 0%, #6b46c1 100%);
    }