:root {
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --danger-color: #ef4444;
    --success-color: #22c55e;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --border-color: #e2e8f0;
    --text-color: #1e293b;
    --text-secondary: #64748b;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
}

* {
    box-sizing: border-box;
}

html, body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    margin: 0;
    padding: 0;
    background: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

/* Main Layout */
.main-layout {
    min-height: 100vh;
}

/* Container */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
}

/* Header */
.header {
    text-align: center;
    margin-bottom: 2rem;
}

.title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin: 0 0 0.5rem 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
}

.subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin: 0;
}

/* Control Panel */
.control-panel {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
    margin-bottom: 1.5rem;
}

.input-row {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.input-group {
    flex: 1;
    min-width: 300px;
    position: relative;
    display: flex;
    align-items: center;
}

.input-icon {
    position: absolute;
    left: 1rem;
    color: var(--text-secondary);
    pointer-events: none;
}

.url-input {
    width: 100%;
    padding: 0.875rem 1rem 0.875rem 2.75rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
    background: var(--bg-color);
}

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

.url-input:disabled {
    background: #f1f5f9;
    cursor: not-allowed;
}

/* Buttons */
.btn {
    padding: 0.875rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

.btn-danger:hover:not(:disabled) {
    background: #dc2626;
}

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

.btn-success:hover:not(:disabled) {
    background: #16a34a;
}

.btn-outline-primary {
    background: transparent;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-outline-primary:hover:not(:disabled) {
    background: var(--primary-color);
    color: white;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

/* Settings */
.settings {
    margin-top: 1rem;
}

.settings summary {
    cursor: pointer;
    font-weight: 500;
    color: var(--text-secondary);
    padding: 0.5rem 0;
    user-select: none;
    list-style: none;
}

.settings summary::-webkit-details-marker {
    display: none;
}

.settings summary::before {
    content: '▶ ';
    display: inline-block;
    transition: transform 0.2s;
    margin-right: 0.5rem;
}

.settings[open] summary::before {
    transform: rotate(90deg);
}

.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-top: 1rem;
}

.setting-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.setting-item label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.setting-item input[type="range"] {
    width: 100%;
    accent-color: var(--primary-color);
}

/* Progress Panel */
.progress-panel {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
    margin-bottom: 1.5rem;
}

.panel-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin: 0 0 1rem 0;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.progress-bar-container {
    width: 100%;
    height: 2rem;
    background: #e2e8f0;
    border-radius: 10px;
    overflow: hidden;
    position: relative;
    margin-bottom: 1rem;
}

.progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), #818cf8);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: width 0.3s ease;
    position: relative;
    overflow: hidden;
}

.progress-bar-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.3),
        transparent
    );
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.progress-text {
    color: white;
    font-weight: 600;
    font-size: 0.875rem;
    z-index: 1;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
}

.stat-item {
    text-align: center;
    padding: 1rem;
    background: var(--bg-color);
    border-radius: 8px;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.stat-value.small {
    font-size: 0.75rem;
    font-weight: 400;
    color: var(--text-secondary);
    word-break: break-all;
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

.progress-message {
    margin-top: 1rem;
    padding: 0.75rem;
    background: var(--bg-color);
    border-radius: 6px;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Results Panel */
.results-panel {
    background: var(--card-bg);
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    flex-wrap: wrap;
    gap: 1rem;
}

.results-content {
    max-height: 600px;
    overflow-y: auto;
}

/* Image Table */
.image-table-container {
    padding: 0;
}

.image-table-container .table {
    margin: 0;
    width: 100%;
    border-collapse: collapse;
}

.image-table-container .table th,
.image-table-container .table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.image-table-container .table thead {
    background: var(--bg-color);
    position: sticky;
    top: 0;
    z-index: 10;
}

.image-table-container .table thead th {
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.image-table-container .table tbody tr {
    transition: background-color 0.15s;
}

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

.preview-image {
    width: 80px;
    height: 80px;
    object-fit: cover;
    border-radius: 6px;
    box-shadow: var(--shadow-sm);
}

.text-truncate {
    max-width: 300px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    display: block;
}

.badge {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: 4px;
}

.bg-secondary {
    background: #64748b;
    color: white;
}

.bg-info {
    background: #0ea5e9;
    color: white;
}

/* Loading State */
.spinner {
    width: 1rem;
    height: 1rem;
    border: 2px solid white;
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

.spinner-border {
    width: 2rem;
    height: 2rem;
    border: 3px solid var(--primary-color);
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

.spinner-border-sm {
    width: 1rem;
    height: 1rem;
    border: 2px solid currentColor;
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

/* Empty State */
.alert {
    padding: 1rem 1.5rem;
    border-radius: 8px;
    margin: 0;
}

.alert-info {
    background: #e0f2fe;
    color: #0369a1;
    border: 1px solid #7dd3fc;
}

.alert-secondary {
    background: #f1f5f9;
    color: #475569;
}

/* Links */
a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.15s;
}

a:hover {
    color: var(--primary-hover);
    text-decoration: underline;
}

/* Scrollbar */
.results-content::-webkit-scrollbar {
    width: 8px;
}

.results-content::-webkit-scrollbar-track {
    background: var(--bg-color);
}

.results-content::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

.results-content::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

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

    .title {
        font-size: 1.75rem;
    }

    .input-row {
        flex-direction: column;
    }

    .input-group {
        min-width: 100%;
    }

    .settings-grid {
        grid-template-columns: 1fr;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .results-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .text-truncate {
        max-width: 200px;
    }

    .image-table-container .table th:nth-child(4),
    .image-table-container .table td:nth-child(4) {
        display: none;
    }
}

/* Error UI */
#blazor-error-ui {
    background: #ef4444;
    color: white;
    padding: 1rem;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    display: none;
    z-index: 1000;
}

#blazor-error-ui .reload {
    color: white;
    text-decoration: underline;
    margin: 0 0.5rem;
}

#blazor-error-ui .dismiss {
    cursor: pointer;
    margin-left: 0.5rem;
}