:root {
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --primary-light: #3b82f6;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --info-color: #0ea5e9;
    --light-bg: #f8fafc;
    --border-color: #e2e8f0;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Roboto', 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--light-bg);
    color: var(--text-primary);
    font-size: 0.95rem;
    line-height: 1.6;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
    margin-bottom: 1rem;
    letter-spacing: -0.5px;
}

h1 {
    font-size: 2rem;
}

h2 {
    font-size: 1.75rem;
}

h3 {
    font-size: 1.5rem;
}

h4 {
    font-size: 1.25rem;
}

h5 {
    font-size: 1.1rem;
}

h6 {
    font-size: 1rem;
}

/* Form Controls */
.form-control,
.form-select,
textarea {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.625rem 0.875rem;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    background-color: white;
    color: var(--text-primary);
}

.form-check-input {
    border: 2px solid var(--border-color);
    border-radius: 4px;
    width: 1.25em;
    height: 1.25em;
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-color: white;
    transition: all 0.2s ease;
}

.form-check-input:checked {
    background-color: var(--primary-color) !important;
    border-color: var(--primary-color) !important;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath fill='white' d='M12.207 4.793a1 1 0 010 1.414l-5 5a1 1 0 01-1.414 0l-2-2a1 1 0 011.414-1.414L6.5 9.086l4.293-4.293a1 1 0 011.414 0z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: center;
    background-size: 12px 12px;
}

.form-control:focus,
.form-select:focus,
.form-check-input:focus,
textarea:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
    background-color: white;
    outline: none;
}

.form-label {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.form-text {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-top: 0.25rem;
}

.dropdown-menu {
    border-radius: 8px;
    border: 1px solid #e5e7eb;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.dropdown-item {
    padding: 0.75rem 1.25rem;
    color: #374151;
    transition: all 0.2s ease;
}

.dropdown-item:hover {
    background-color: #f3f4f6;
    color: var(--primary-color);
}

textarea.form-control {
    resize: vertical;
    min-height: 100px;
}

/* Bootstrap 5 Button Customization */
.btn {
    font-size: 0.9rem;
    padding: 0.5rem 0.875rem;
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn:hover,
.btn:active,
.btn:focus {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    text-decoration: none;
}

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

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

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

.btn-secondary:hover {
    background-color: #475569;
}

.btn-success {
    background-color: var(--success-color);
    color: white;
}

.btn-success:hover {
    background-color: #059669;
}

.btn-warning {
    background-color: var(--warning-color);
    color: white;
}

.btn-warning:hover {
    background-color: #d97706;
}

.btn-danger {
    background-color: var(--danger-color);
    color: white;
}

.btn-danger:hover {
    background-color: #dc2626;
}

.btn-info {
    background-color: var(--info-color);
    color: white;
}

.btn-info:hover {
    background-color: #0284c7;
}

.btn-sm {
    padding: 0.375rem 0.625rem;
    font-size: 0.8rem;
}

.btn-lg {
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
}

.btn:disabled,
.btn.disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* Badges */
.badge {
    padding: 0.5rem 0.875rem;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.8rem;
    letter-spacing: 0.3px;
    display: inline-block;
}

.badge-success {
    background-color: rgba(16, 185, 129, 0.1);
    color: #047857;
}

.badge-warning {
    background-color: rgba(245, 158, 11, 0.1);
    color: #b45309;
}

.badge-danger {
    background-color: rgba(239, 68, 68, 0.1);
    color: #b91c1c;
}

.badge-secondary {
    background-color: rgba(100, 116, 139, 0.1);
    color: #475569;
}

.badge-info {
    background-color: rgba(14, 165, 233, 0.1);
    color: #0369a1;
}

.badge-primary {
    background-color: rgba(37, 99, 235, 0.1);
    color: #1e40af;
}

/* Cards */
.card {
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    background-color: white;
}

.card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--primary-light);
}

.card-header {
    background: linear-gradient(135deg, var(--light-bg) 0%, #f1f5f9 100%);
    border-bottom: 1px solid var(--border-color);
    border-radius: 12px 12px 0 0;
    padding: 1.25rem 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.card-body {
    padding: 1.5rem;
}

.card-footer {
    background-color: var(--light-bg);
    border-top: 1px solid var(--border-color);
    padding: 1.25rem 1.5rem;
    border-radius: 0 0 12px 12px;
}

/* Tables */
.table {
    border-collapse: separate;
    border-spacing: 0;
    margin-bottom: 0;
}

.table thead th {
    background: linear-gradient(135deg, var(--light-bg) 0%, #f1f5f9 100%);
    color: var(--text-primary);
    font-weight: 700;
    border: none;
    border-bottom: 2px solid var(--border-color);
    padding: 1rem 0.875rem;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.table tbody tr {
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.2s ease;
}

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

.table tbody td {
    padding: 1rem 0.875rem;
    color: var(--text-primary);
    vertical-align: middle;
    font-size: 0.95rem;
}

/* Modals */
.modal-content {
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    background-color: white;
}

.modal-header {
    background: linear-gradient(135deg, var(--light-bg) 0%, #f1f5f9 100%);
    border-bottom: 1px solid var(--border-color);
    border-radius: 12px 12px 0 0;
    padding: 1.5rem;
}

.modal-header .modal-title {
    font-weight: 700;
    color: var(--text-primary);
    font-size: 1.25rem;
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    background-color: var(--light-bg);
    border-top: 1px solid var(--border-color);
    padding: 1.25rem 1.5rem;
    border-radius: 0 0 12px 12px;
}

.modal-header .btn-close {
    opacity: 0.6;
    transition: opacity 0.3s ease;
}

.modal-header .btn-close:hover {
    opacity: 1;
}

/* Alerts */
.alert {
    border: 1px solid;
    border-radius: 8px;
    padding: 1rem 1.25rem;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.alert-success {
    background-color: rgba(16, 185, 129, 0.1);
    border-color: rgba(16, 185, 129, 0.3);
    color: #047857;
}

.alert-warning {
    background-color: rgba(245, 158, 11, 0.1);
    border-color: rgba(245, 158, 11, 0.3);
    color: #b45309;
}

.alert-danger {
    background-color: rgba(239, 68, 68, 0.1);
    border-color: rgba(239, 68, 68, 0.3);
    color: #b91c1c;
}

.alert-info {
    background-color: rgba(14, 165, 233, 0.1);
    border-color: rgba(14, 165, 233, 0.3);
    color: #0369a1;
}

/* Pagination */
.pagination {
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 20px;
    gap: 0.5rem;
}

.page-link {
    color: var(--primary-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.5rem 0.75rem;
    font-weight: 500;
    transition: all 0.3s ease;
    background-color: white;
}

.page-link:hover:not(.disabled) {
    background-color: var(--primary-light);
    color: white;
    border-color: var(--primary-color);
}

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

.page-item.disabled .page-link {
    color: var(--secondary-color);
    background-color: white;
    opacity: 0.5;
    cursor: not-allowed;
}

/* Containers */
.container-fluid {
    padding-left: 1.5rem;
    padding-right: 1.5rem;
    max-width: 100%;
}

main {
    background: linear-gradient(135deg, var(--light-bg) 0%, #f1f5f9 100%);
    min-height: 100vh;
    padding: 0.5rem 0;
}

/* Utilities */
.text-primary {
    color: var(--primary-color) !important;
}

.text-secondary {
    color: var(--text-secondary) !important;
}

.text-success {
    color: var(--success-color) !important;
}

.text-warning {
    color: var(--warning-color) !important;
}

.text-danger {
    color: var(--danger-color) !important;
}

.text-info {
    color: var(--info-color) !important;
}

.text-center {
    text-align: center;
}

.text-muted {
    color: var(--text-secondary) !important;
}

/* Shadows */
.shadow-sm {
    box-shadow: var(--shadow-sm) !important;
}

.shadow-md {
    box-shadow: var(--shadow-md) !important;
}

.shadow-lg {
    box-shadow: var(--shadow-lg) !important;
}

/* Border utilities */
.border {
    border: 1px solid var(--border-color) !important;
}

.border-top {
    border-top: 1px solid var(--border-color) !important;
}

.border-bottom {
    border-bottom: 1px solid var(--border-color) !important;
}

.border-start {
    border-left: 1px solid var(--border-color) !important;
}

.border-end {
    border-right: 1px solid var(--border-color) !important;
}

/* Spacing utilities */
.mb-3 {
    margin-bottom: 1.25rem !important;
}

.mt-4 {
    margin-top: 1.5rem !important;
}

.mt-2 {
    margin-top: 0.5rem !important;
}

.p-4 {
    padding: 1.5rem !important;
}

/* Notification */
.notification {
    display: none;
    margin-top: 15px;
}

/* Login Form Specific Styles */
.login-container {
    min-height: 100vh;
    width: 100vw;
    display: flex;
    align-items: center;
    justify-content: center;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    margin: 0;
    padding: 20px;
    overflow-y: auto;
}

.login-card {
    width: 400px;
    padding: 2rem;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    background-color: white;
    margin: auto;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.login-form h1 {
    font-size: 1.5rem;
    margin-bottom: 1.25rem;
    color: var(--text-primary);
}

.login-form .form-control {
    font-size: 0.95rem;
    padding: 0.625rem 0.875rem;
    margin-bottom: 1rem;
}

.login-form .btn {
    font-size: 0.95rem;
    padding: 0.625rem 0.875rem;
    margin-top: 1rem;
    width: 100%;
}

.login-form .form-label {
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

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

    h1 {
        font-size: 1.5rem;
    }

    h2 {
        font-size: 1.35rem;
    }

    h3 {
        font-size: 1.2rem;
    }

    body {
        font-size: 0.9rem;
    }

    .btn {
        padding: 0.5rem 0.75rem;
        font-size: 0.85rem;
    }

    .modal-dialog {
        margin: 0.5rem;
        max-width: calc(100% - 1rem);
    }
}

@media (max-width: 576px) {
    .login-card {
        width: 100%;
        max-width: 350px;
        padding: 1.5rem;
    }

    .login-form h1 {
        font-size: 1.25rem;
        margin-bottom: 1rem;
    }

    h1 {
        font-size: 1.35rem;
    }

    .btn {
        padding: 0.5rem 0.625rem;
        font-size: 0.8rem;
    }

    .table {
        font-size: 0.85rem;
    }

    .table tbody td {
        padding: 0.75rem 0.5rem;
    }
}