:root {
    --primary-color: #0ea5e9;
    --primary-hover: #0284c7;
    --primary-light: #38bdf8;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --info-color: #06b6d4;
    
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    
    --radius: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
}

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

html, body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-primary);
    background-color: var(--bg-secondary);
    line-height: 1.6;
    font-size: 16px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.125rem; }

p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

/* Links */
a, .btn-link {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover, .btn-link:hover {
    color: var(--primary-hover);
    text-decoration: none;
}

/* Buttons */
.btn {
    padding: 0.625rem 1.25rem;
    border-radius: var(--radius);
    font-weight: 500;
    font-size: 0.875rem;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-primary {
    color: #fff;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);
    box-shadow: var(--shadow);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-hover) 0%, #0369a1 100%);
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.btn-secondary {
    color: var(--text-primary);
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
}

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

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

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

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

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

.btn-sm {
    padding: 0.375rem 0.875rem;
    font-size: 0.813rem;
}

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

/* Cards */
.card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    transition: box-shadow 0.2s ease;
}

.card:hover {
    box-shadow: var(--shadow);
}

.card-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    font-weight: 600;
    font-size: 1.125rem;
}

.card-body {
    padding: 1.5rem;
}

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

/* Forms */
.form-control {
    padding: 0.625rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.875rem;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
}

.form-label {
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
}

.form-select {
    padding: 0.625rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    cursor: pointer;
}

.form-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
}

/* Tables */
.table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.table thead th {
    padding: 1rem 1.5rem;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.875rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.table tbody td {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.table tbody tr:last-child td {
    border-bottom: none;
}

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

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

/* Badges */
.badge {
    padding: 0.375rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
    display: inline-block;
}

.badge-primary {
    background-color: rgba(14, 165, 233, 0.1);
    color: var(--primary-color);
}

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

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

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

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

/* Alerts */
.alert {
    padding: 1rem 1.25rem;
    border-radius: var(--radius-lg);
    border-left: 4px solid;
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
}

.alert-info {
    background-color: rgba(6, 182, 212, 0.1);
    border-color: var(--info-color);
    color: #0e7490;
}

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

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

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

/* Modals */
.modal-content {
    border-radius: var(--radius-xl);
    border: none;
    box-shadow: var(--shadow-lg);
}

.modal-header {
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem;
    background-color: var(--bg-secondary);
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

.modal-body {
    padding: 1.5rem;
}

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

/* Utilities */
.content {
    padding: 2rem;
}

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

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

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

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

/* Validation */
.valid.modified:not([type=checkbox]) {
    border-color: var(--success-color);
}

.invalid {
    border-color: var(--danger-color);
}

.validation-message {
    color: var(--danger-color);
    font-size: 0.813rem;
    margin-top: 0.25rem;
}

/* Error Boundary */
.blazor-error-boundary {
    background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);
    padding: 1rem 1rem 1rem 3.7rem;
    color: white;
    position: relative;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
}

.blazor-error-boundary::before {
    content: "⚠";
    position: absolute;
    left: 1rem;
    font-size: 1.5rem;
}

.blazor-error-boundary::after {
    content: "An error has occurred."
}

h1:focus {
    outline: none;
}

.darker-border-checkbox.form-check-input {
    border-color: var(--border-color);
}

/* Stats Cards */
.stat-card {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);
    color: white;
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.stat-card h3 {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.stat-card .stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: white;
}

/* Report Styling */
.report-container {
    padding-bottom: 2rem;
}

.report-container .card {
    margin-bottom: 1.5rem;
    border: 1px solid var(--border-color);
}

.report-container .card-header {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 1.25rem;
}

.report-container .card-header h5 {
    margin: 0;
    font-size: 1.125rem;
    font-weight: 600;
}

.report-container .table {
    margin-bottom: 0;
}

.report-container .table thead th {
    background-color: var(--bg-tertiary);
    font-weight: 600;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    border-bottom: 2px solid var(--border-color);
    padding: 0.75rem 1rem;
}

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

.report-container .table tbody td {
    padding: 0.875rem 1rem;
    vertical-align: middle;
}

.report-container .bg-opacity-10 {
    opacity: 0.1;
}

.report-container .rounded {
    border-radius: var(--radius);
}