/* ============================================================
   CLR Transfer Tool — Light Theme Design System
   (Matches Catalog Auditor design language)
   ============================================================ */

/* --- Design Tokens --- */
:root {
    --bg-primary: #F1F1F2;
    --bg-surface: #FFFFFF;
    --bg-surface-hover: #f7f7f8;
    --bg-elevated: #F1F1F2;
    --border: #D1D2D3;
    --border-light: #e0e0e1;

    --accent: #1B75BB;
    --accent-hover: #00ABE4;
    --accent-soft: rgba(27, 117, 187, 0.1);

    --critical: #EF4444;
    --critical-soft: rgba(239, 68, 68, 0.08);
    --warning: #F59E0B;
    --warning-soft: rgba(245, 158, 11, 0.08);
    --info: #00ABE4;
    --info-soft: rgba(0, 171, 228, 0.08);
    --success: #10B981;
    --success-soft: rgba(16, 185, 129, 0.08);

    --text: #000000;
    --text-muted: #555555;
    --text-dim: #999999;
    --text-inverse: #FFFFFF;

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);
    --shadow-glow: 0 0 20px rgba(27, 117, 187, 0.15);

    --font-display: 'Montserrat', 'Avenir', sans-serif;
    --font-body: 'Avenir', 'Montserrat', sans-serif;

    --transition: 0.2s ease;
}


/* --- Base Reset & Body --- */
*, *::before, *::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background: var(--bg-primary);
    color: var(--text);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
}

h1, h2, h3, h4, h5, h6,
.font-display {
    font-family: var(--font-display);
    font-weight: 700;
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: color var(--transition);
}
a:hover {
    color: var(--accent-hover);
}


/* --- Navbar --- */
.navbar-dark-custom {
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border);
    padding: 0.75rem 0;
}

.navbar-dark-custom .navbar-brand {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 1.25rem;
    color: var(--text);
    letter-spacing: -0.02em;
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}
.navbar-dark-custom .navbar-brand:hover {
    color: var(--accent);
}
.navbar-dark-custom .navbar-brand i {
    color: var(--accent);
}

.navbar-brand-title {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 1.25rem;
    color: var(--text);
    letter-spacing: -0.02em;
    transition: color var(--transition);
}
.navbar-dark-custom .navbar-brand:hover .navbar-brand-title {
    color: var(--accent);
}

.navbar-brand-sub {
    font-size: 0.6rem;
    font-weight: 500;
    color: var(--text-dim);
    letter-spacing: 0.02em;
    margin-left: 1.65rem;
}

.navbar-dark-custom .nav-link {
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.875rem;
    transition: color var(--transition);
}
.navbar-dark-custom .nav-link:hover,
.navbar-dark-custom .nav-link.active {
    color: var(--text);
}


/* --- Footer --- */
.footer-dark {
    background: var(--bg-surface);
    border-top: 1px solid var(--border);
    color: var(--text-dim);
    font-size: 0.8rem;
    padding: 1rem 0;
}


/* --- Flash Alerts --- */
.alert-custom {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text);
    font-size: 0.875rem;
}
.alert-custom.alert-danger {
    border-left: 4px solid var(--critical);
}
.alert-custom.alert-success {
    border-left: 4px solid var(--success);
}
.alert-custom.alert-warning {
    border-left: 4px solid var(--warning);
}
.alert-custom.alert-info {
    border-left: 4px solid var(--info);
}
.alert-custom .btn-close {
    filter: none;
}


/* --- Cards --- */
.card-dark {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    transition: box-shadow var(--transition), border-color var(--transition);
}
.card-dark:hover {
    border-color: var(--border-light);
}
.card-dark .card-header {
    background: transparent;
    border-bottom: 1px solid var(--border);
    padding: 1rem 1.25rem;
}
.card-dark .card-body {
    padding: 1.25rem;
}
.card-dark .card-footer {
    background: transparent;
    border-top: 1px solid var(--border);
    padding: 0.75rem 1.25rem;
}


/* --- Stat Cards --- */
.stat-card {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    text-align: center;
    transition: transform var(--transition), box-shadow var(--transition);
}
.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}
.stat-card .stat-value {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 2rem;
    line-height: 1.1;
}
.stat-card .stat-label {
    color: var(--text-muted);
    font-size: 0.8rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: 0.25rem;
}


/* --- Upload Drop Zone --- */
.drop-zone {
    border: 2px dashed var(--border-light);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: border-color var(--transition), background-color var(--transition);
    background: var(--bg-surface);
}
.drop-zone:hover,
.drop-zone.drag-over {
    border-color: var(--accent);
    background-color: var(--accent-soft);
}
.drop-zone .drop-icon {
    color: var(--accent);
    font-size: 3rem;
    opacity: 0.7;
}
.drop-zone:hover .drop-icon {
    opacity: 1;
}


/* --- Feature Pills --- */
.feature-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: 100px;
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 500;
    transition: border-color var(--transition);
}
.feature-pill:hover {
    border-color: var(--accent);
    color: var(--text);
}
.feature-pill i {
    color: var(--accent);
    font-size: 0.875rem;
}


/* --- Buttons --- */
.btn-accent {
    background: var(--accent);
    color: #fff;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-sm);
    padding: 0.625rem 1.5rem;
    font-size: 0.9rem;
    transition: all var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}
.btn-accent:hover {
    background: var(--accent-hover);
    color: #fff;
    box-shadow: var(--shadow-glow);
    text-decoration: none;
}
.btn-accent:active {
    transform: scale(0.98);
}
.btn-accent.btn-lg {
    padding: 0.8rem 2rem;
    font-size: 1rem;
}
.btn-accent:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-outline-accent {
    background: transparent;
    color: var(--accent);
    font-weight: 600;
    border: 1px solid var(--accent);
    border-radius: var(--radius-sm);
    padding: 0.625rem 1.5rem;
    font-size: 0.9rem;
    transition: all var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    text-decoration: none;
}
.btn-outline-accent:hover {
    background: var(--accent-soft);
    color: var(--accent-hover);
    text-decoration: none;
}

.btn-ghost {
    background: transparent;
    color: var(--text-muted);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
    font-weight: 500;
    transition: all var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    text-decoration: none;
}
.btn-ghost:hover {
    background: var(--bg-elevated);
    color: var(--text);
    border-color: var(--border-light);
    text-decoration: none;
}


/* --- Tables --- */
.table-dark-custom {
    width: 100%;
    border-collapse: collapse;
}
.table-dark-custom thead th {
    background: var(--bg-elevated);
    color: var(--text-muted);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}
.table-dark-custom tbody td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border);
    font-size: 0.875rem;
    vertical-align: middle;
}
.table-dark-custom tbody tr {
    transition: background var(--transition);
}
.table-dark-custom tbody tr:hover {
    background: var(--bg-surface-hover);
}
.table-dark-custom tbody tr:last-child td {
    border-bottom: none;
}


/* --- Severity Badges --- */
.badge-severity {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.25rem 0.65rem;
    border-radius: 100px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
.badge-critical {
    background: var(--critical-soft);
    color: var(--critical);
}
.badge-warning {
    background: var(--warning-soft);
    color: var(--warning);
}
.badge-info {
    background: var(--info-soft);
    color: var(--info);
}
.badge-success {
    background: var(--success-soft);
    color: var(--success);
}


/* --- Quick Count Cards --- */
.quick-count {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.875rem 1rem;
}
.quick-count-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    font-weight: 700;
    flex-shrink: 0;
}
.quick-count-icon.critical {
    background: var(--critical-soft);
    color: var(--critical);
}
.quick-count-icon.warning {
    background: var(--warning-soft);
    color: var(--warning);
}
.quick-count-icon.info {
    background: var(--info-soft);
    color: var(--info);
}
.quick-count-value {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 1.25rem;
    line-height: 1;
}
.quick-count-label {
    color: var(--text-muted);
    font-size: 0.75rem;
}


/* --- Breadcrumb --- */
.breadcrumb-dark {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    list-style: none;
    padding: 0;
    margin: 0 0 1rem;
    font-size: 0.85rem;
}
.breadcrumb-dark li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.breadcrumb-dark li + li::before {
    content: '/';
    color: var(--text-dim);
}
.breadcrumb-dark a {
    color: var(--text-muted);
}
.breadcrumb-dark a:hover {
    color: var(--accent);
}
.breadcrumb-dark .active {
    color: var(--text-dim);
}


/* --- Step Indicator --- */
.step-indicator {
    display: flex;
    align-items: center;
    gap: 0;
}

.step-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.35rem;
}

.step-number {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 0.8rem;
    background: var(--bg-elevated);
    border: 2px solid var(--border);
    color: var(--text-dim);
    transition: all var(--transition);
}

.step-item.active .step-number {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

.step-item.completed .step-number {
    background: var(--success);
    border-color: var(--success);
    color: #fff;
}

.step-label {
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--text-dim);
    white-space: nowrap;
}

.step-item.active .step-label {
    color: var(--accent);
    font-weight: 600;
}

.step-item.completed .step-label {
    color: var(--success);
}

.step-line {
    width: 60px;
    height: 2px;
    background: var(--border);
    margin: 0 0.5rem;
    margin-bottom: 1.25rem;
    transition: background var(--transition);
}

.step-line.active {
    background: var(--accent);
}


/* --- ITK Chips --- */
.itk-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.35rem 0.75rem;
    font-size: 0.75rem;
    color: var(--text);
    font-weight: 500;
}

.itk-chip-count {
    background: var(--accent-soft);
    color: var(--accent);
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 0.7rem;
    padding: 0.1rem 0.4rem;
    border-radius: 4px;
}


/* --- Template File List --- */
.template-file-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.5rem 0.75rem;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    margin-bottom: 0.35rem;
    font-size: 0.825rem;
}

.template-file-item .file-name {
    font-weight: 500;
    color: var(--text);
}

.template-file-item .file-size {
    color: var(--text-dim);
    font-size: 0.75rem;
}

.template-file-item .file-remove {
    color: var(--critical);
    cursor: pointer;
    font-size: 0.9rem;
    opacity: 0.7;
    transition: opacity var(--transition);
}
.template-file-item .file-remove:hover {
    opacity: 1;
}


/* --- Loading Spinner --- */
.spinner-container {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 3rem;
}
.spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}
@keyframes spin {
    to { transform: rotate(360deg); }
}


/* --- Processing Overlay --- */
.processing-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(241, 241, 242, 0.9);
    z-index: 9999;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}
.processing-overlay.active {
    display: flex;
}
.processing-overlay .spinner {
    width: 48px;
    height: 48px;
    border-width: 4px;
}
.processing-overlay p {
    font-family: var(--font-display);
    font-weight: 600;
    color: var(--text-muted);
}


/* --- Utility Classes --- */
.text-critical { color: var(--critical); }
.text-warning-custom { color: var(--warning); }
.text-info-custom { color: var(--info); }
.text-success-custom { color: var(--success); }
.text-accent { color: var(--accent); }
.text-muted-custom { color: var(--text-muted); }
.text-dim { color: var(--text-dim); }

.bg-surface { background: var(--bg-surface); }
.bg-elevated { background: var(--bg-elevated); }

.font-display { font-family: var(--font-display); }
.fw-800 { font-weight: 800; }

.gap-xs { gap: 0.35rem; }
.gap-sm { gap: 0.5rem; }
.gap-md { gap: 0.75rem; }
.gap-lg { gap: 1.25rem; }

code {
    background: var(--bg-elevated);
    color: var(--accent);
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    font-size: 0.825rem;
}


/* --- Responsive --- */
@media (max-width: 768px) {
    .stat-card .stat-value {
        font-size: 1.5rem;
    }
    .step-line {
        width: 30px;
    }
    .step-label {
        font-size: 0.6rem;
    }
}

@media (max-width: 576px) {
    .feature-pill {
        font-size: 0.7rem;
        padding: 0.375rem 0.75rem;
    }
    .quick-count {
        padding: 0.625rem 0.75rem;
    }
}


/* --- Scrollbar Styling --- */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
    background: var(--border-light);
    border-radius: 100px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--text-dim);
}


/* --- Override Bootstrap defaults --- */
.form-check-input:checked {
    background-color: var(--accent);
    border-color: var(--accent);
}
.form-check-input {
    background-color: var(--bg-surface);
    border-color: var(--border);
}