:root {
    --primary-color: #4f46e5;
    --primary-hover: #4338ca;
    --primary-light: #eef2ff;
    --success-color: #10b981;
    --bg-color: #f9fafb;
    --text-color: #1f2937;
    --text-secondary: #6b7280;
    --container-bg: #ffffff;
    --border-color: #e5e7eb;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

* {
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: var(--text-color);
    margin: 0;
    padding: 20px;
    line-height: 1.6;
}

.header {
    text-align: center;
    margin-bottom: 30px;
    color: white;
}

.header h1 {
    margin: 0 0 10px 0;
    font-size: 2.5rem;
    font-weight: 700;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.subtitle {
    margin: 0;
    font-size: 1.1rem;
    opacity: 0.9;
}

.container {
    max-width: 900px;
    margin: 0 auto 20px;
    padding: 30px;
    background-color: var(--container-bg);
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
}

.license-section {
    margin-bottom: 25px;
}

.mode-selector {
    margin-bottom: 15px;
}

.label-text {
    display: block;
    margin-bottom: 8px;
    color: var(--text-color);
    font-size: 0.95rem;
}

.hint {
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: normal;
    margin-left: 8px;
}

.link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.link:hover {
    text-decoration: underline;
}

.input-group {
    display: flex;
    gap: 10px;
}

/* Form Elements */
.form-input,
.form-select,
textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.2s;
    background-color: white;
}

.form-input:focus,
.form-select:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-light);
}

button,
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    transition: all 0.2s;
    white-space: nowrap;
}

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

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background-color: var(--surface-color);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
}

.btn-secondary:hover {
    background-color: var(--border-color);
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary:active {
    transform: translateY(0);
}

.btn-large {
    padding: 14px 28px;
    font-size: 1.1rem;
    width: 100%;
}

/* File Upload */
.file-upload-section {
    margin-bottom: 20px;
}

.file-upload-label {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    border: 3px dashed var(--border-color);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s;
    background-color: #fafafa;
    color: var(--text-secondary);
}

.file-upload-label:hover,
.file-upload-label.drag-over {
    border-color: var(--primary-color);
    background-color: var(--primary-light);
    color: var(--primary-color);
}

.file-upload-label svg {
    margin-bottom: 15px;
}

.file-upload-label span:first-of-type {
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: 5px;
}

.file-input {
    display: none;
}

/* Video Container */
.video-wrapper {
    position: relative;
    width: 100%;
    height: 0;
    padding-bottom: 75%;
    background-color: #000;
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
}

#camera_view,
#camera_overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

#camera_overlay {
    pointer-events: none;
}

/* Image View */
.imageview-container {
    margin-bottom: 20px;
}

.imageview {
    position: relative;
    width: 100%;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    background-color: #000;
}

.imageview img {
    width: 100%;
    height: auto;
    display: block;
}

.imageview canvas.overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* Controls */
.controls {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-bottom: 20px;
}

.control-group {
    display: flex;
    flex-direction: column;
}

/* Results */
.result-section {
    margin-top: 20px;
}

#scan_result,
#detection_result {
    min-height: 120px;
    resize: vertical;
    font-family: "Monaco", "Menlo", "Consolas", monospace;
    font-size: 0.95rem;
    background-color: #f9fafb;
    color: var(--text-color);
}

/* Loading Indicator */
.loading-indicator {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 9999;
    display: none;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    color: white;
}

.loading-indicator p {
    margin-top: 15px;
    font-size: 1.1rem;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 5px solid rgba(255, 255, 255, 0.3);
    border-top: 5px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    body {
        padding: 10px;
    }

    .container {
        padding: 20px;
    }

    .header h1 {
        font-size: 1.8rem;
    }

    .subtitle {
        font-size: 0.95rem;
    }

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

    .controls {
        gap: 10px;
    }

    .video-wrapper {
        padding-bottom: 133.33%;
    }

    .file-upload-label {
        padding: 30px 15px;
    }
}

@media (min-width: 769px) {
    .controls {
        flex-direction: row;
        align-items: flex-end;
    }

    .control-group {
        flex: 1;
    }

    .btn-large {
        width: auto;
        min-width: 200px;
    }
}

#video_file_player {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

#video_overlay.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

#camera_container {
    display: none;
}

#video_container {
    display: none;
}

/* Image Navigator */
#image_navigator {
    margin-top: 12px;
    margin-bottom: 4px;
}

.navigator-bar {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    background: var(--bg-color);
    border: 2px solid var(--border-color);
    border-radius: 40px;
    padding: 4px;
    width: fit-content;
    margin: 0 auto;
    box-shadow: var(--shadow-sm);
}

.btn-nav {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 8px 20px;
    background-color: transparent;
    color: var(--text-secondary);
    border: none;
    border-radius: 32px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.18s, color 0.18s, opacity 0.18s;
    line-height: 1;
}

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

.btn-nav:disabled {
    opacity: 0.35;
    cursor: not-allowed;
}

.navigator-counter {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-color);
    min-width: 60px;
    text-align: center;
    user-select: none;
    padding: 0 4px;
}

/* ========== Settings Modal ========== */
.modal-overlay {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0,0,0,0.5);
    /* Must sit above the SDK's own license notice overlay (z-index 2147483647) */
    z-index: 2147483647;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal-content {
    background: var(--container-bg);
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    max-width: 640px;
    width: 100%;
    max-height: 85vh;
    overflow-y: auto;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px 12px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    margin: 0;
    font-size: 1.25rem;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.6rem;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 0 4px;
    line-height: 1;
}

.modal-close:hover {
    color: var(--text-color);
}

.modal-body {
    padding: 16px 24px 24px;
}

.settings-sdk-section {
    padding: 16px 0;
    border-bottom: 1px solid var(--border-color);
}

.settings-sdk-section:last-child {
    border-bottom: none;
}

.settings-sdk-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 6px;
}

.sdk-badge {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 2px 10px;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.badge-inactive {
    background: #f3f4f6;
    color: #9ca3af;
}

.badge-active {
    background: #d1fae5;
    color: #065f46;
}

/* ========== Top Controls ========== */
.top-controls {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 15px;
    flex-wrap: wrap;
}

.top-controls-right {
    display: flex;
    align-items: flex-end;
    gap: 12px;
}

.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px;
    border-radius: 10px;
    background: var(--bg-color);
    border: 2px solid var(--border-color);
    cursor: pointer;
    color: var(--text-secondary);
    transition: all 0.2s;
}

.btn-icon:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: var(--primary-light);
}

/* ========== Mode Toggle ========== */
.mode-toggle {
    display: flex;
    flex-direction: column;
}

.toggle-group {
    display: inline-flex;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
}

.toggle-btn {
    padding: 10px 20px;
    border: none;
    background: var(--bg-color);
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    border-radius: 0;
}

.toggle-btn:first-child {
    border-right: 1px solid var(--border-color);
}

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

.toggle-btn:hover:not(.toggle-active) {
    background: var(--primary-light);
    color: var(--primary-color);
}

/* ========== Benchmark ========== */
.benchmark-header {
    margin-bottom: 16px;
}

.benchmark-controls {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 8px;
}

.btn-sm {
    padding: 8px 18px;
    font-size: 0.9rem;
}

.progress-bar-container {
    width: 100%;
    height: 6px;
    background: var(--border-color);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 6px;
}

.progress-bar {
    height: 100%;
    width: 0%;
    background: var(--primary-color);
    border-radius: 3px;
    transition: width 0.3s;
}

.progress-text {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin: 0;
}

/* Benchmark Table */
.benchmark-table-wrap {
    overflow-x: auto;
    margin-top: 12px;
}

.benchmark-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.benchmark-table th,
.benchmark-table td {
    text-align: left;
    padding: 10px 14px;
    border-bottom: 1px solid var(--border-color);
}

.benchmark-table th {
    background: var(--bg-color);
    font-weight: 700;
    color: var(--text-color);
    position: sticky;
    top: 0;
    white-space: nowrap;
}

.benchmark-table td {
    vertical-align: top;
}

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

.benchmark-table .sdk-col {
    font-weight: 600;
    white-space: nowrap;
}

.benchmark-table .count-col {
    text-align: center;
    font-weight: 700;
    font-size: 1.1rem;
}

.benchmark-table .best-count {
    color: var(--success-color);
}

.benchmark-table .time-col {
    text-align: right;
    white-space: nowrap;
    color: var(--text-secondary);
}

.benchmark-table .barcodes-list {
    font-family: "Monaco", "Menlo", "Consolas", monospace;
    font-size: 0.82rem;
    line-height: 1.5;
    max-height: 200px;
    overflow-y: auto;
    margin: 0;
    padding: 0;
    list-style: none;
}

.benchmark-table .barcodes-list li {
    padding: 1px 0;
}

.benchmark-summary {
    margin-top: 16px;
    padding: 14px 18px;
    background: var(--bg-color);
    border-radius: 10px;
    border: 1px solid var(--border-color);
}

.benchmark-summary h4 {
    margin: 0 0 8px;
    font-size: 0.95rem;
}

.benchmark-summary ul {
    margin: 0;
    padding-left: 20px;
    font-size: 0.9rem;
    line-height: 1.7;
}

.benchmark-no-result {
    text-align: center;
    color: var(--text-secondary);
    padding: 24px;
    font-style: italic;
}

.benchmark-image-title {
    margin: 20px 0 6px;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--primary-color);
    padding-bottom: 4px;
    border-bottom: 2px solid var(--primary-light);
}

.benchmark-image-title:first-child {
    margin-top: 8px;
}

/* Dynamsoft template file loader */
.template-load-row {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 4px;
}

.template-load-btn {
    cursor: pointer;
    white-space: nowrap;
}

.template-status {
    font-size: 0.82rem;
    color: var(--text-secondary);
    font-style: italic;
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Annotation ground truth import row */
.benchmark-annotation-row {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 10px;
    flex-wrap: wrap;
}

.annotation-import-btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    cursor: pointer;
}

.annotation-status {
    font-size: 0.85rem;
}

/* Benchmark GT rate columns */
.benchmark-table .rate-col {
    text-align: center;
    white-space: nowrap;
    font-weight: 600;
    font-size: 0.95rem;
}

.gt-good { color: #16a34a; }
.gt-ok { color: #d97706; }
.gt-poor { color: #dc2626; }

@media (max-width: 768px) {
    .top-controls {
        flex-direction: column;
        align-items: stretch;
    }

    .top-controls-right {
        justify-content: space-between;
    }

    /* Let the select and the mode toggle shrink below their intrinsic
       width so they stay inside the card on 320px-wide screens. */
    .top-controls>*,
    .form-select,
    .toggle-group {
        min-width: 0;
    }

    .benchmark-controls {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 380px) {
    .toggle-btn {
        padding: 10px 12px;
    }
}

/* Demo footer: attribution, tutorial link, and trial CTA */
.demo-footer {
    max-width: 900px;
    margin: 10px auto 0;
    text-align: center;
    color: #fff;
    font-size: 0.9rem;
    line-height: 1.8;
}

.demo-footer a {
    color: #fff;
    text-decoration: underline;
    text-underline-offset: 3px;
}

.demo-footer a:hover {
    text-decoration: none;
}

.demo-footer .demo-footer-cta {
    display: inline-block;
    margin-left: 6px;
    padding: 8px 16px;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.18);
    text-decoration: none;
}

.demo-footer .demo-footer-cta:hover {
    background: rgba(255, 255, 255, 0.32);
}