:root {
    --bg-primary: #f5f7fa;
    --bg-secondary: #ffffff;
    --bg-hover: #e8ecf1;
    --text-primary: #1a1a2e;
    --text-secondary: #5a6178;
    --text-muted: #9ca3b8;
    --border-color: #e2e6ed;
    --accent: #4f6ef7;
    --accent-hover: #3b5de7;
    --accent-light: #eef1fe;
    --danger: #ef4444;
    --danger-hover: #dc2626;
    --success: #22c55e;
    --warning: #f59e0b;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.1);
    --transition: 0.2s ease;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    min-height: 100dvh;
    overflow-x: hidden;
    -webkit-tap-highlight-color: transparent;
    -webkit-touch-callout: none;
}

.top-nav {
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    height: 56px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.nav-brand {
    font-size: clamp(11px, 3.2vw, 18px);
    font-weight: 700;
    color: var(--accent);
    letter-spacing: 0.5px;
    white-space: nowrap;
    flex-shrink: 1;
    min-width: 0;
}

.nav-tabs {
    display: flex;
    gap: 4px;
    background: var(--bg-primary);
    padding: 4px;
    border-radius: var(--radius-md);
}

.nav-tab {
    padding: 8px 20px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.nav-step {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--bg-hover);
    color: var(--text-muted);
    font-size: 11px;
    font-weight: 700;
    flex-shrink: 0;
}

.nav-tab.active .nav-step {
    background: rgba(255,255,255,0.3);
    color: #fff;
}

.nav-tab:hover {
    color: var(--text-primary);
    background: var(--bg-hover);
}

.nav-tab.active {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 2px 8px rgba(79,110,247,0.3);
}

.main-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

.page {
    display: none;
}

.page.active {
    display: block;
}

.panel {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    overflow: hidden;
    margin-bottom: 16px;
}

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 20px;
    font-size: 15px;
    font-weight: 600;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-secondary);
}

.panel-body {
    padding: 16px 20px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 16px;
    border: 1px solid var(--border-color);
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 13px;
    font-weight: 500;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
    font-family: inherit;
    user-select: none;
    -webkit-user-select: none;
    min-height: 36px;
    touch-action: manipulation;
}

.btn:hover {
    background: var(--bg-hover);
}

.btn-sm {
    padding: 5px 12px;
    font-size: 12px;
}

.btn-lg {
    padding: 12px 32px;
    font-size: 15px;
    border-radius: var(--radius-md);
}

.btn-primary {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}

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

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

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

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

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

.form-row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.form-row:last-child {
    margin-bottom: 0;
}

.form-row label {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    white-space: nowrap;
    min-width: 90px;
}

.form-row input[type="number"],
.form-row input[type="text"],
.form-row select {
    flex: 1;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 13px;
    color: var(--text-primary);
    background: var(--bg-primary);
    outline: none;
    transition: border-color var(--transition);
}

.frag-header-row {
    gap: 8px;
}
.frag-name-group {
    display: flex;
    align-items: center;
    gap: 6px;
    flex: 0 0 auto;
    min-width: 0;
}
.frag-name-group label {
    min-width: auto;
    white-space: nowrap;
}
.frag-name-input {
    width: 90px;
    min-width: 0;
    flex: none;
}
.frag-switch-group {
    display: flex;
    align-items: center;
    gap: 6px;
    flex: 1;
    min-width: 0;
}
.frag-switch-group label {
    min-width: auto !important;
}
.frag-switch-group select {
    flex: 1;
    min-width: 0;
}
.frag-duration-row {
    gap: 8px;
}
.frag-duration-group {
    display: flex;
    align-items: center;
    gap: 6px;
    flex: 0 0 auto;
    min-width: 0;
}
.frag-duration-group label {
    min-width: auto;
    white-space: nowrap;
}
.frag-duration-input {
    width: 60px;
    min-width: 0;
    flex: none;
}

.form-row input:focus,
.form-row select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(79,110,247,0.1);
}

.range-input {
    display: flex;
    align-items: center;
    gap: 6px;
    flex: 1;
}

.range-input input[type="number"] {
    width: 70px;
    flex: none;
    padding: 6px 8px;
    text-align: center;
}

.range-input span {
    font-size: 13px;
    color: var(--text-secondary);
}

.range-unit {
    font-size: 12px;
    color: var(--text-muted);
}

.switch-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid var(--border-color);
}

.switch-row:last-of-type {
    border-bottom: none;
}

.switch-row span {
    font-size: 14px;
    font-weight: 500;
}

.switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0; left: 0; right: 0; bottom: 0;
    background: #ccc;
    border-radius: 24px;
    transition: var(--transition);
}

.slider::before {
    content: "";
    position: absolute;
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background: #fff;
    border-radius: 50%;
    transition: var(--transition);
    box-shadow: 0 1px 3px rgba(0,0,0,0.15);
}

.switch input:checked + .slider {
    background: var(--accent);
}

.switch input:checked + .slider::before {
    transform: translateX(20px);
}

.empty-state {
    text-align: center;
    padding: 32px 16px;
    color: var(--text-muted);
    font-size: 14px;
}

.production-layout {
    display: grid;
    grid-template-columns: 340px 1fr;
    gap: 16px;
}

.progress-check-bar {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
}

.progress-check-item {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: all var(--transition);
}

.progress-check-item:hover {
    border-color: var(--accent);
    background: var(--accent-light);
}

.progress-check-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    font-size: 12px;
    font-weight: 700;
    flex-shrink: 0;
}

.progress-check-item.pending .progress-check-icon {
    background: var(--bg-hover);
    color: var(--text-muted);
}

.progress-check-item.done .progress-check-icon {
    background: var(--success);
    color: #fff;
}

.progress-check-label {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
}

.progress-check-count {
    font-size: 12px;
    color: var(--text-muted);
    margin-left: auto;
}

.progress-check-item.done .progress-check-count {
    color: var(--success);
}

.production-bottom {
    margin-top: 16px;
}

.fragment-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
    min-height: 60px;
}

.fragment-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    background: var(--bg-primary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition);
    border: 2px solid transparent;
    user-select: none;
}

.fragment-item:hover {
    background: var(--bg-hover);
}

.fragment-item.active {
    border-color: var(--accent);
    background: var(--accent-light);
}

.fragment-item.dragging {
    opacity: 0.5;
    transform: scale(0.98);
}

.fragment-item .drag-handle {
    cursor: grab;
    color: var(--text-muted);
    font-size: 16px;
    line-height: 1;
}

.fragment-item .drag-handle:active {
    cursor: grabbing;
}

.fragment-item .fragment-name {
    flex: 1;
    font-size: 13px;
    font-weight: 500;
}

.fragment-item .fragment-duration {
    font-size: 12px;
    color: var(--text-muted);
}

.fragment-item .fragment-delete {
    color: var(--text-muted);
    cursor: pointer;
    font-size: 16px;
    padding: 2px 4px;
    border-radius: 4px;
    transition: all var(--transition);
}

.fragment-item .fragment-delete:hover {
    color: var(--danger);
    background: rgba(239,68,68,0.1);
}

.fragment-config-content {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.image-upload-row {
    display: flex;
    gap: 8px;
    align-items: stretch;
}

.image-upload-row .image-upload-area {
    flex: 1;
}

.image-upload-area {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-md);
    padding: 10px;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition);
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.image-upload-area:hover {
    border-color: var(--accent);
    background: var(--accent-light);
}

.image-upload-area .upload-icon {
    font-size: 18px;
    color: var(--text-muted);
    margin-bottom: 0;
}

.image-upload-area .upload-text {
    font-size: 12px;
    color: var(--text-secondary);
}

.image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    gap: 8px;
    margin-top: 12px;
}

.image-grid-item {
    position: relative;
    aspect-ratio: 1;
    border-radius: var(--radius-sm);
    overflow: hidden;
    border: 1px solid var(--border-color);
    cursor: pointer;
}

.image-grid-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.image-grid-item .img-delete {
    position: absolute;
    top: 2px;
    right: 2px;
    width: 20px;
    height: 20px;
    background: rgba(0,0,0,0.6);
    color: #fff;
    border: none;
    border-radius: 50%;
    font-size: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition);
}

.image-grid-item:hover .img-delete {
    opacity: 1;
}

/* 图片预览浮层 */
.img-preview-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
}
.img-preview-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
}
.img-preview-content {
    position: relative;
    max-width: 90vw;
    max-height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
}
.img-preview-content img {
    max-width: 90vw;
    max-height: 90vh;
    object-fit: contain;
    border-radius: var(--radius-sm);
    box-shadow: 0 4px 24px rgba(0,0,0,0.5);
}
.img-preview-close {
    position: absolute;
    top: -12px;
    right: -12px;
    width: 32px;
    height: 32px;
    background: rgba(255,255,255,0.9);
    color: #333;
    border: none;
    border-radius: 50%;
    font-size: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 8px rgba(0,0,0,0.3);
    transition: background var(--transition);
}
.img-preview-close:hover {
    background: #fff;
}

.area-select {
    padding: 12px 0 4px;
}

.area-label {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    display: block;
    margin-bottom: 8px;
}

.area-options {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.area-option {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 13px;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    transition: all var(--transition);
}

.area-option:hover {
    border-color: var(--accent);
}

.area-option input[type="checkbox"] {
    accent-color: var(--accent);
}


.action-bar {
    display: flex;
    align-items: center;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 16px;
}

.export-config {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    align-items: center;
}

.export-config .form-row {
    margin-bottom: 0;
    min-width: 180px;
}

.progress-area {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1;
    max-width: 300px;
}

.progress-bar {
    flex: 1;
    height: 8px;
    background: var(--bg-primary);
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--accent);
    border-radius: 4px;
    transition: width 0.3s ease;
    width: 0%;
}

.progress-text {
    font-size: 13px;
    color: var(--text-secondary);
    min-width: 36px;
}

.download-area {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 12px;
    margin-top: 16px;
}

.video-result-item {
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.video-result-preview {
    position: relative;
    aspect-ratio: 3/4;
    background: #1a1a2e;
    cursor: pointer;
    overflow: hidden;
}

.video-result-preview video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.play-overlay {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0,0,0,0.3);
    color: #fff;
    font-size: 32px;
    opacity: 0;
    transition: opacity var(--transition);
}

.video-result-preview:hover .play-overlay {
    opacity: 1;
}

.video-result-info {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    font-size: 12px;
    gap: 8px;
}

.material-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.material-section {
    min-width: 0;
}

.header-actions {
    display: flex;
    gap: 6px;
}

.sticker-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 10px;
    min-height: 80px;
    max-height: 400px;
    overflow-y: auto;
}

.sticker-item {
    position: relative;
    aspect-ratio: 1;
    border-radius: var(--radius-sm);
    overflow: hidden;
    border: 1px solid var(--border-color);
    background: var(--bg-primary);
}

.sticker-item img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.sticker-item .sticker-delete {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 22px;
    height: 22px;
    background: rgba(0,0,0,0.6);
    color: #fff;
    border: none;
    border-radius: 50%;
    font-size: 13px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition);
}

.sticker-item:hover .sticker-delete {
    opacity: 1;
}

.text-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    min-height: 60px;
}

.text-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    background: var(--bg-primary);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
}

.text-item .text-content {
    flex: 1;
    font-size: 13px;
    word-break: break-all;
}

.text-item .text-actions {
    display: flex;
    gap: 4px;
}

.text-add-form {
    margin-top: 12px;
    padding: 12px;
    background: var(--bg-primary);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
}

.text-add-form textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 13px;
    resize: vertical;
    min-height: 60px;
    outline: none;
    font-family: inherit;
}

.text-add-form textarea:focus {
    border-color: var(--accent);
}

.form-actions {
    display: flex;
    gap: 8px;
    margin-top: 8px;
    justify-content: flex-end;
}

.color-config {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

.color-config-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}

.color-config-row:last-child {
    margin-bottom: 0;
}

.color-config-row label:first-child {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    min-width: 70px;
}

.color-picks {
    display: flex;
    align-items: center;
    gap: 3px;
    flex-wrap: wrap;
}

.color-pick {
    position: relative;
    display: flex;
    width: 32px;
    height: 32px;
    margin: 0;
    padding: 0;
    flex-shrink: 0;
}

.color-pick input[type="color"] {
    -webkit-appearance: none;
    appearance: none;
    width: 32px;
    height: 32px;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    cursor: pointer;
    padding: 0;
    background: none;
    margin: 0;
    display: block;
    box-sizing: border-box;
}

.color-pick input[type="color"]::-webkit-color-swatch-wrapper {
    padding: 2px;
}

.color-pick input[type="color"]::-webkit-color-swatch {
    border: none;
    border-radius: 3px;
}

.color-pick-remove {
    position: absolute;
    top: -6px;
    right: -6px;
    width: 16px;
    height: 16px;
    background: var(--danger);
    color: #fff;
    border-radius: 50%;
    font-size: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    transition: opacity var(--transition);
}

.color-pick:hover .color-pick-remove {
    opacity: 1;
}

.font-picks {
    display: flex;
    flex-direction: column;
    gap: 6px;
    flex: 1;
}

.font-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-top: 4px;
    max-height: 240px;
    overflow-y: auto;
}

.font-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 6px 10px;
    background: var(--bg-primary);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    transition: border-color var(--transition);
}

.font-item:hover {
    border-color: var(--accent);
}

.font-preview {
    font-size: 18px;
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1;
    margin-right: 12px;
    line-height: 1.4;
}

.font-checkbox {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--accent);
    flex-shrink: 0;
}

.audio-config {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--border-color);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 13px;
    color: var(--text-secondary);
    cursor: pointer;
    white-space: nowrap;
}

.checkbox-label input[type="checkbox"] {
    width: 16px;
    height: 16px;
    cursor: pointer;
    accent-color: var(--accent);
    flex-shrink: 0;
}

.audio-info {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    margin: 8px 0;
    background: var(--bg-primary);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
}

.audio-filename {
    flex: 1;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.audio-duration {
    font-size: 12px;
    color: var(--text-muted);
    white-space: nowrap;
}

.audio-player-wrap {
    margin: 8px 0;
    padding: 10px 12px;
    background: var(--bg-primary);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
}

.audio-player-wrap audio {
    width: 100%;
    height: 36px;
    border-radius: var(--radius-sm);
}

.audio-start-control {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 8px;
}

.audio-start-display {
    font-size: 12px;
    color: var(--text-secondary);
    white-space: nowrap;
}

#presetAudioSelect {
    flex: 1;
    padding: 6px 10px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 13px;
    color: var(--text-primary);
    background: var(--bg-primary);
    outline: none;
    cursor: pointer;
    transition: border-color var(--transition);
}

#presetAudioSelect:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(79,110,247,0.1);
}

.mode-select {
    display: flex;
    gap: 8px;
}

.mode-option {
    flex: 1;
    padding: 8px 12px;
    text-align: center;
    font-size: 13px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition);
    background: var(--bg-primary);
}

.mode-option:hover {
    border-color: var(--accent);
}

.mode-option.active {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}

.config-section {
    margin-top: 14px;
    padding-top: 14px;
    border-top: 1px solid var(--border-color);
}

.config-section-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.effect-options {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.effect-option {
    padding: 6px 12px;
    font-size: 12px;
    border: 1px solid var(--border-color);
    border-radius: 20px;
    cursor: pointer;
    transition: all var(--transition);
    background: var(--bg-primary);
    color: var(--text-secondary);
    white-space: nowrap;
    user-select: none;
    -webkit-user-select: none;
}

.effect-option:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.effect-option.active {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}

@media (max-width: 900px) {
    .production-layout {
        grid-template-columns: 1fr;
    }

    .material-layout {
        grid-template-columns: 1fr;
    }

    .progress-check-bar {
        gap: 8px;
    }

    .progress-check-item {
        padding: 8px 10px;
        gap: 6px;
    }

    .progress-check-label {
        font-size: 12px;
    }

    .progress-check-count {
        font-size: 11px;
    }

    .top-nav {
        padding: 0 12px;
    }

    .main-content {
        padding: 12px;
    }

    .nav-tab {
        padding: 6px 16px;
        font-size: 13px;
    }

    .form-row label {
        min-width: 70px;
        font-size: 12px;
    }

    .panel-body {
        padding: 12px 14px;
    }

    .panel-header {
        padding: 12px 16px;
        font-size: 14px;
    }

    .image-grid {
        grid-template-columns: repeat(auto-fill, minmax(60px, 1fr));
    }

    .sticker-grid {
        grid-template-columns: repeat(auto-fill, minmax(70px, 1fr));
    }

    .area-options {
        gap: 4px;
    }

    .area-option {
        padding: 3px 8px;
        font-size: 12px;
    }

    .export-config {
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
    }

    .export-config .form-row {
        min-width: auto;
    }

    .action-bar {
        flex-direction: column;
        gap: 10px;
    }

    .progress-area {
        max-width: 100%;
    }
}

@media (max-width: 600px) {
    .nav-tabs {
        gap: 2px;
        padding: 3px;
    }

    .nav-tab {
        padding: 5px 8px;
        font-size: 12px;
        gap: 3px;
    }

    .nav-step {
        width: 16px;
        height: 16px;
        font-size: 10px;
    }

    .range-input input[type="number"] {
        width: 55px;
        padding: 5px 6px;
    }

    .font-item {
        padding: 5px 8px;
    }

    .font-preview {
        font-size: 16px;
    }

    .download-area {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: 10px;
    }

    .video-result-info {
        padding: 6px 10px;
        font-size: 11px;
    }

    .btn {
        padding: 7px 12px;
        font-size: 12px;
    }

    .btn-lg {
        padding: 10px 24px;
        font-size: 14px;
    }

    .audio-info {
        padding: 6px 10px;
    }

    .audio-player-wrap {
        padding: 8px 10px;
    }
}

@media (orientation: landscape) and (max-height: 500px) {
    .top-nav {
        height: 44px;
        padding: 0 16px;
    }

    .main-content {
        padding: 8px;
    }

    .panel {
        margin-bottom: 10px;
    }

    .panel-header {
        padding: 10px 16px;
        font-size: 13px;
    }

    .panel-body {
        padding: 10px 16px;
    }

    .production-layout {
        grid-template-columns: 280px 1fr;
        gap: 10px;
    }

    .image-grid {
        grid-template-columns: repeat(auto-fill, minmax(50px, 1fr));
        gap: 6px;
    }

    .sticker-grid {
        grid-template-columns: repeat(auto-fill, minmax(60px, 1fr));
        gap: 8px;
        max-height: 300px;
    }

    .download-area {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
        gap: 10px;
    }
}

@media (orientation: portrait) {
    .production-layout {
        grid-template-columns: 1fr;
    }

    .material-layout {
        grid-template-columns: 1fr;
    }

    .fragment-list {
        max-height: 200px;
        overflow-y: auto;
    }

    .download-area {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
}

input, button, select, textarea {
    font-size: 16px;
}

.template-list {
    flex: 1;
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    align-items: center;
    min-height: 32px;
}

.template-list-item {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    background: var(--bg-primary);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    font-size: 12px;
}

.template-list-empty {
    font-size: 12px;
    color: var(--text-muted);
}

.template-select {
    padding: 4px 8px;
    font-size: 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    outline: none;
}

.template-select:focus {
    border-color: var(--accent);
}

.form-row input[type="number"],
.form-row input[type="text"],
.form-row select,
.range-input input[type="number"],
.area-select,
.mode-select {
    font-size: 16px;
}

@media (min-width: 768px) {
    input, button, select, textarea {
        font-size: 13px;
    }

    .form-row input[type="number"],
    .form-row input[type="text"],
    .form-row select,
    .range-input input[type="number"],
    .area-select,
    .mode-select {
        font-size: 13px;
    }
}

/* 封面编辑器样式 */
.cover-layout {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.cover-editor {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.cover-top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.cover-ratio-select select {
    padding: 6px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 13px;
    color: var(--text-primary);
    background: var(--bg-secondary);
    outline: none;
    cursor: pointer;
    transition: border-color var(--transition);
}

.cover-ratio-select select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(79,110,247,0.1);
}

.cover-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.cover-canvas-wrap {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    min-height: 300px;
}

#coverCanvas {
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: #fff;
    box-shadow: var(--shadow-md);
    cursor: pointer;
    max-width: 100%;
    height: auto;
    touch-action: none;
}

.cover-props-panel {
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    padding: 16px;
    margin-bottom: 16px;
}

.props-section {
    margin-bottom: 16px;
}

.props-section:last-child {
    margin-bottom: 0;
}

.props-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-color);
}

.props-row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 10px;
}

.props-row:last-child {
    margin-bottom: 0;
}

.props-row label {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    min-width: 60px;
    flex-shrink: 0;
}

.props-row input[type="text"],
.props-row input[type="number"],
.props-row select {
    flex: 1;
    padding: 6px 10px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 13px;
    color: var(--text-primary);
    background: var(--bg-primary);
    outline: none;
    transition: border-color var(--transition);
}

.props-row input:focus,
.props-row select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(79,110,247,0.1);
}

.props-row input[type="color"] {
    width: 40px;
    height: 32px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    cursor: pointer;
    padding: 0;
    background: none;
    flex-shrink: 0;
}

.props-row input[type="color"]::-webkit-color-swatch-wrapper {
    padding: 2px;
}

.props-row input[type="color"]::-webkit-color-swatch {
    border: none;
    border-radius: 3px;
}

.props-row input[type="range"] {
    flex: 1;
    height: 6px;
    border-radius: 3px;
    background: var(--border-color);
    outline: none;
    -webkit-appearance: none;
}

.props-row input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--accent);
    cursor: pointer;
}

.props-row input[type="range"]::-moz-range-thumb {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--accent);
    cursor: pointer;
    border: none;
}

.props-row input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.props-row span {
    font-size: 13px;
    color: var(--text-primary);
    min-width: 30px;
    text-align: right;
}

.props-info {
    font-size: 13px;
    color: var(--text-secondary);
    padding: 8px 0;
}

.cover-bg-panel {
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    padding: 16px;
}

.cover-bg-row {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 12px;
}

.cover-bg-row label {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    min-width: 60px;
}

.cover-bg-options {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.cover-bg-controls {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--border-color);
}

.cover-bg-controls .form-row {
    margin-bottom: 0;
}

.cover-template-list {
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    padding: 16px;
}

.cover-template-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.cover-template-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.cover-tmpl-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 12px;
    background: var(--bg-primary);
    border-radius: var(--radius-sm);
    border: 2px solid var(--border-color);
    cursor: pointer;
    transition: all var(--transition);
}

.cover-tmpl-item:hover {
    border-color: var(--accent);
    background: var(--accent-light);
}

.cover-tmpl-item.active {
    border-color: var(--accent);
    background: var(--accent-light);
}

.cover-tmpl-preview {
    width: 100%;
    aspect-ratio: 3/4;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.cover-tmpl-preview canvas {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.cover-tmpl-name-wrap {
    display: flex;
    align-items: center;
    gap: 6px;
    justify-content: center;
    flex-wrap: wrap;
}

.cover-tmpl-name {
    font-size: 12px;
    color: var(--text-primary);
    font-weight: 500;
    cursor: pointer;
    transition: color var(--transition);
}

.cover-tmpl-name:hover {
    color: var(--accent);
}

.cover-tmpl-ratio {
    font-size: 11px;
    color: var(--text-secondary);
    background: var(--bg-secondary);
    padding: 2px 6px;
    border-radius: 4px;
}

.cover-tmpl-actions {
    display: flex;
    gap: 4px;
}

.cover-tmpl-actions button {
    padding: 2px 6px;
    font-size: 11px;
}

.fragment-cover-badge {
    padding: 2px 6px;
    background: var(--success);
    color: white;
    font-size: 11px;
    border-radius: 4px;
    margin-left: 6px;
    font-weight: 500;
}

/* 封面编辑器响应式适配 */
@media (max-width: 900px) {
    .cover-top-bar {
        flex-direction: column;
        align-items: stretch;
    }

    .cover-ratio-select {
        width: 100%;
    }

    .cover-ratio-select select {
        width: 100%;
    }

    .cover-actions {
        justify-content: center;
    }

    .cover-canvas-wrap {
        padding: 16px;
    }

    .cover-template-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
}

@media (max-width: 600px) {
    .cover-top-bar {
        gap: 8px;
    }

    .cover-actions {
        gap: 6px;
    }

    .cover-actions .btn {
        padding: 5px 10px;
        font-size: 11px;
    }

    .cover-canvas-wrap {
        padding: 12px;
        min-height: 250px;
    }

    .cover-props-panel,
    .cover-bg-panel,
    .cover-template-list {
        padding: 12px;
    }

    .cover-bg-row {
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
    }

    .cover-bg-row label {
        min-width: auto;
    }

    .cover-template-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
    }

    .cover-tmpl-item {
        padding: 10px;
        gap: 6px;
    }

    .cover-tmpl-name {
        font-size: 11px;
    }

    .cover-tmpl-actions button {
        padding: 3px 6px;
        font-size: 10px;
    }
}

@media (orientation: portrait) {
    .cover-layout {
        gap: 12px;
    }

    .cover-editor {
        gap: 12px;
    }

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

@media (orientation: landscape) {
    .cover-template-grid {
        grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
        gap: 8px;
    }

    .download-area {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
        gap: 8px;
    }
}

@media (orientation: landscape) and (max-height: 500px) {
    .cover-canvas-wrap {
        padding: 10px;
        min-height: 200px;
    }
}

/* 模态框样式 */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-dialog {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    min-width: 320px;
    max-width: 90vw;
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    animation: slideUp 0.2s ease;
}

@keyframes slideUp {
    from {
        transform: translateY(20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.spinning {
    animation: spin 1.5s linear infinite;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
}

.modal-close {
    background: none;
    border: none;
    font-size: 18px;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    transition: all var(--transition);
}

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

.modal-body {
    padding: 20px;
    overflow-y: auto;
    flex: 1;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    padding: 16px 20px;
    border-top: 1px solid var(--border-color);
    background: var(--bg-primary);
}

@media (max-width: 600px) {
    .modal-dialog {
        min-width: auto;
        width: 90vw;
    }

    .modal-header {
        padding: 14px 16px;
        font-size: 14px;
    }

    .modal-body {
        padding: 16px;
    }

    .modal-footer {
        padding: 12px 16px;
    }
}

/* 设置页面样式 */
.settings-layout {
    max-width: 640px;
    margin: 0 auto;
}

.settings-section {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.settings-desc {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.settings-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.var-quick-btn {
    font-size: 10px;
    color: var(--accent);
    background: var(--accent-light);
    border: none;
    border-radius: 3px;
    padding: 1px 4px;
    cursor: pointer;
    margin-left: 3px;
    display: inline-flex;
    align-items: center;
    user-select: none;
    -webkit-user-select: none;
    transition: all var(--transition);
    white-space: nowrap;
    line-height: 1.5;
}

.var-quick-btn:hover {
    background: var(--accent);
    color: #fff;
}