/* Carta-inspired Design System */

:root {
    /* Carta-inspired color palette */
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #e0e7ff;
    --secondary-color: #1f2937;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --info-color: #3b82f6;
    
    /* Background colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: #f3f4f6;
    
    /* Text colors */
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --text-muted: #9ca3af;
    
    /* Border and shadows */
    --border-color: #e5e7eb;
    --border-focus: var(--primary-color);
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --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);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Border radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
}

/* Global styles */
* {
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 0.875rem;
    line-height: 1.5;
    color: var(--text-primary);
    background-color: var(--bg-secondary);
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.25;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.125rem; }
h5 { font-size: 1rem; }
h6 { font-size: 0.875rem; }

.text-lg { font-size: 1.125rem; }
.text-sm { font-size: 0.875rem; }
.text-xs { font-size: 0.75rem; }

.font-semibold { font-weight: 600; }
.font-medium { font-weight: 500; }

/* Navigation */
.navbar {
    background-color: var(--bg-primary) !important;
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-md) 0;
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary) !important;
    text-decoration: none;
    letter-spacing: -0.025em;
}

.navbar-brand:hover {
    color: var(--primary-color) !important;
}

.navbar-brand i {
    color: var(--primary-color);
    margin-right: var(--spacing-sm);
}

.navbar-nav .nav-link {
    color: var(--text-secondary) !important;
    font-weight: 500;
    padding: var(--spacing-sm) var(--spacing-md) !important;
    border-radius: var(--radius-md);
    transition: all 0.15s ease-in-out;
}

.navbar-nav .nav-link:hover {
    color: var(--primary-color) !important;
    background-color: var(--primary-light);
}

/* Dropdown menu */
.dropdown-menu {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-sm);
    margin-top: var(--spacing-xs);
    min-width: 200px;
}

.dropdown-item {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-weight: 500;
    color: var(--text-primary);
    transition: all 0.15s ease-in-out;
}

.dropdown-item:hover, .dropdown-item:focus {
    background-color: var(--bg-secondary);
    color: var(--primary-color);
}

.dropdown-item i {
    margin-right: var(--spacing-sm);
    width: 1rem;
    text-align: center;
}

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

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

.card-header {
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-lg);
    font-weight: 600;
    color: var(--text-primary);
}

.card-body {
    padding: var(--spacing-lg);
}

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

/* Stats cards */
.stat-card {
    text-align: center;
    padding: var(--spacing-xl);
    transition: all 0.2s ease-in-out;
}

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

.stat-icon {
    width: 4rem;
    height: 4rem;
    margin: 0 auto var(--spacing-lg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.stat-icon.primary { background-color: var(--primary-light); color: var(--primary-color); }
.stat-icon.success { background-color: #d1fae5; color: var(--success-color); }
.stat-icon.warning { background-color: #fef3c7; color: var(--warning-color); }
.stat-icon.info { background-color: #dbeafe; color: var(--info-color); }

.stat-number {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    white-space: nowrap;
}

.stat-label {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    white-space: nowrap;
}

/* Buttons */
.btn {
    font-weight: 500;
    border-radius: var(--radius-md);
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
    line-height: 1.25rem;
    border: none;
    cursor: pointer;
    transition: all 0.15s ease-in-out;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.btn:focus {
    outline: 2px solid transparent;
    outline-offset: 2px;
    box-shadow: 0 0 0 2px var(--primary-color), 0 0 0 4px rgba(99, 102, 241, 0.1);
}

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

.btn-primary:hover {
    background-color: var(--primary-dark);
    color: white;
    transform: translateY(-1px);
}

.btn-outline-primary {
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
    background-color: transparent;
}

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

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

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

.btn-outline-danger {
    border: 1px solid var(--danger-color);
    color: var(--danger-color);
    background-color: transparent;
}

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

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.75rem;
}

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

/* Forms */
.form-label {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    font-size: 0.875rem;
}

.form-control {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
    line-height: 1.25rem;
    color: var(--text-primary);
    transition: all 0.15s ease-in-out;
    width: 100%;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-control::placeholder {
    color: var(--text-muted);
}

.form-text {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: var(--spacing-xs);
}

.invalid-feedback {
    color: var(--danger-color);
    font-size: 0.75rem;
    margin-top: var(--spacing-xs);
}

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

.form-control.is-invalid:focus {
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

/* Tables */
.table {
    color: var(--text-primary);
    margin-bottom: 0;
}

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

.table tbody td {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}

.table tbody tr {
    transition: background-color 0.15s ease-in-out;
}

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

/* Table alignment fixes - force left alignment */
.table thead th:first-child,
.table tbody td:first-child,
.table thead th:nth-child(2),
.table tbody td:nth-child(2) {
    text-align: left !important;
}

.table tbody td:first-child .d-flex,
.table tbody td:first-child .d-flex > div {
    justify-content: flex-start !important;
    text-align: left !important;
}

.table tbody td:first-child .font-semibold {
    text-align: left !important;
}

.table-responsive {
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

/* Badges */
.badge {
    font-weight: 500;
    font-size: 0.75rem;
    padding: 0.375rem 0.75rem;
    border-radius: var(--radius-md);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

.badge.bg-success {
    background-color: var(--success-color) !important;
}

.badge.bg-warning {
    background-color: var(--warning-color) !important;
    color: white !important;
}

.badge.bg-info {
    background-color: var(--info-color) !important;
}

/* Alerts */
.alert {
    border: none;
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    border-left: 4px solid;
}

.alert-success {
    background-color: #f0fdf4;
    color: #166534;
    border-left-color: var(--success-color);
}

.alert-danger {
    background-color: #fef2f2;
    color: #991b1b;
    border-left-color: var(--danger-color);
}

.alert-warning {
    background-color: #fffbeb;
    color: #92400e;
    border-left-color: var(--warning-color);
}

.alert-info {
    background-color: #eff6ff;
    color: #1e40af;
    border-left-color: var(--info-color);
}

/* Progress bars */
.progress {
    height: 0.75rem;
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.progress-bar {
    background-color: var(--primary-color);
    border-radius: var(--radius-md);
    transition: width 0.6s ease;
}

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

.modal-header {
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-xl);
}

.modal-title {
    font-weight: 600;
    color: var(--text-primary);
}

.modal-body {
    padding: var(--spacing-xl);
}

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

/* Footer */
footer {
    background-color: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-xl) 0;
    margin-top: var(--spacing-2xl);
}

/* Container improvements */
.container {
    max-width: 1200px;
}

main.container {
    padding-top: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
}

/* Utility classes */
.text-muted {
    color: var(--text-muted) !important;
}

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

.bg-light {
    background-color: var(--bg-secondary) !important;
}

.border-0 {
    border: none !important;
}

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

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

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

/* Responsive design */
@media (max-width: 768px) {
    .container {
        padding-left: var(--spacing-md);
        padding-right: var(--spacing-md);
    }
    
    .card-body {
        padding: var(--spacing-md);
    }
    
    .stat-card {
        padding: var(--spacing-lg);
    }
    
    .stat-number {
        font-size: 1.875rem;
    }
    
    .stat-icon {
        width: 3rem;
        height: 3rem;
        font-size: 1.25rem;
    }
    
    .modal-dialog {
        margin: var(--spacing-md);
    }
    
    .navbar-brand {
        font-size: 1.25rem;
    }
}

@media (max-width: 576px) {
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .btn + .btn {
        margin-top: var(--spacing-sm);
    }
    
    .table-responsive {
        font-size: 0.75rem;
    }
    
    .stat-number {
        font-size: 1.5rem;
    }
}

/* Loading states */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.loading {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* Focus states for accessibility */
.btn:focus,
.form-control:focus,
.dropdown-item:focus {
    outline: 2px solid transparent;
    outline-offset: 2px;
    box-shadow: 0 0 0 2px var(--primary-color);
}

/* Print styles */
@media print {
    .navbar,
    footer,
    .btn,
    .dropdown {
        display: none !important;
    }
    
    .card {
        border: 1px solid #ccc !important;
        box-shadow: none !important;
    }
    
    body {
        background-color: white !important;
    }
}