/* ═══════════════════════════════════════════════
   Blue Archive RVC — 主题样式
   ═══════════════════════════════════════════════ */

/* ─── CSS 变量 ─── */
:root {
    --ba-blue: #4A90D9;
    --ba-blue-light: #6DB3F2;
    --ba-blue-dark: #2C5F8A;
    --ba-blue-pale: #E8F1FA;
    --ba-accent: #FF6B6B;
    --ba-gold: #F5C842;
    --ba-bg: #F5F8FC;
    --ba-bg-card: #FFFFFF;
    --ba-text: #2C3E50;
    --ba-text-secondary: #6B7B8D;
    --ba-border: #DCE4EC;
    --ba-shadow: 0 2px 12px rgba(74, 144, 217, 0.10);
    --ba-shadow-hover: 0 8px 24px rgba(74, 144, 217, 0.18);
    --ba-radius: 16px;
    --ba-radius-sm: 10px;
    --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ─── 基础重置 ─── */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--ba-bg);
    color: var(--ba-text);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.6;
}

/* ─── 背景粒子装饰 ─── */
.bg-particles {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(74, 144, 217, 0.04) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(107, 179, 242, 0.04) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 80%, rgba(245, 200, 66, 0.03) 0%, transparent 50%);
}

/* ─── 导航栏 ─── */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.72);
    backdrop-filter: blur(16px) saturate(1.3);
    -webkit-backdrop-filter: blur(16px) saturate(1.3);
    padding: 0 24px;
}

/* 毛玻璃顶部蓝光渐变 */
.navbar::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(74,144,217,0.08), transparent);
    pointer-events: none;
}

.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 56px;
    position: relative;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--ba-text);
    flex-shrink: 0;
}

.brand-icon {
    width: 28px;
    height: 28px;
    border-radius: 7px;
    background: linear-gradient(135deg, #3B82D6, #6DB3F2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 11px;
    font-weight: 800;
    letter-spacing: -0.5px;
    flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(59,130,214,0.25);
}

.brand-text {
    font-size: 17px;
    font-weight: 700;
    color: var(--ba-text);
    letter-spacing: 0.5px;
}

.nav-sep {
    width: 1px;
    height: 20px;
    background: var(--ba-border);
    opacity: 0.5;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 6px;
}

.nav-link {
    text-decoration: none;
    color: var(--ba-text-secondary);
    padding: 6px 10px;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.25s ease;
    white-space: nowrap;
    position: relative;
}

/* 下划线动画 */
.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    width: 0;
    height: 2.5px;
    background: var(--ba-blue);
    border-radius: 2px;
    transform: translateX(-50%);
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-link:hover {
    color: var(--ba-blue);
}

.nav-link:hover::after {
    width: 60%;
}

.nav-link.active {
    color: var(--ba-blue);
}

.nav-link.active::after {
    width: 70%;
}

/* ─── 页面 ─── */
main {
    position: relative;
    z-index: 1;
    padding-top: 56px;
    max-width: 1200px;
    margin: 0 auto;
}

.page {
    display: none;
    padding: 24px;
    animation: fadeIn 0.4s ease;
}

.page.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ─── Hero 区域（首页） ─── */
.hero {
    text-align: center;
    padding: 60px 20px 40px;
    position: relative;
}

.hero-halo {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    border: 3px solid var(--ba-blue-light);
    margin: 0 auto 24px;
    position: relative;
    animation: halo-rotate 8s linear infinite;
}

.hero-halo::before {
    content: '';
    position: absolute;
    inset: 12px;
    border-radius: 50%;
    border: 2px solid var(--ba-blue);
    opacity: 0.4;
}

.hero-halo::after {
    content: '';
    position: absolute;
    inset: 26px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--ba-blue-light) 0%, transparent 70%);
    opacity: 0.3;
}

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

.hero-title {
    font-size: 48px;
    font-weight: 900;
    background: linear-gradient(135deg, var(--ba-blue-dark), var(--ba-blue), var(--ba-blue-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
    letter-spacing: 2px;
}

.hero-sub {
    font-size: 20px;
    color: var(--ba-blue);
    font-weight: 500;
    margin-bottom: 12px;
}

.hero-desc {
    font-size: 16px;
    color: var(--ba-text-secondary);
    margin-bottom: 28px;
}

/* ─── 按钮 ─── */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    background: linear-gradient(135deg, var(--ba-blue), var(--ba-blue-light));
    color: white;
    border: none;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(74, 144, 217, 0.35);
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.btn-glow {
    animation: glow-pulse 2s ease-in-out infinite;
}

@keyframes glow-pulse {
    0%, 100% { box-shadow: 0 4px 16px rgba(74, 144, 217, 0.3); }
    50% { box-shadow: 0 4px 32px rgba(74, 144, 217, 0.5); }
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 20px;
    background: var(--ba-blue-pale);
    color: var(--ba-blue);
    border: 1px solid var(--ba-border);
    border-radius: 50px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

.btn-secondary:hover {
    background: var(--ba-blue);
    color: white;
    border-color: var(--ba-blue);
}

.btn-sm {
    padding: 4px 12px;
    font-size: 12px;
    background: transparent;
    border: 1px solid var(--ba-border);
    border-radius: 20px;
    color: var(--ba-text-secondary);
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

.btn-sm:hover {
    border-color: var(--ba-accent);
    color: var(--ba-accent);
}

.btn-back {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background: none;
    border: none;
    color: var(--ba-text-secondary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    padding: 8px 0;
    font-family: inherit;
    transition: var(--transition);
}

.btn-back:hover {
    color: var(--ba-blue);
}

.btn-convert {
    width: 100%;
    justify-content: center;
    padding: 16px 28px;
    font-size: 18px;
}

/* ─── 章节标题 ─── */
.section-header {
    text-align: center;
    padding: 20px 0 32px;
}

.section-header h2 {
    font-size: 28px;
    font-weight: 800;
    color: var(--ba-text);
    margin-bottom: 4px;
}

.section-header p {
    color: var(--ba-text-secondary);
    font-size: 14px;
}

/* ─── 角色网格 ─── */
.character-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 20px;
    padding-bottom: 60px;
}

.character-card {
    background: var(--ba-bg-card);
    border-radius: var(--ba-radius);
    box-shadow: var(--ba-shadow);
    overflow: hidden;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
}

.character-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--ba-shadow-hover);
    border-color: var(--ba-blue-light);
}

.character-card:active {
    transform: scale(0.97);
}

/* ─── 分类板块（横向滚动） ─── */
#character-grid {
    display: flex;
    flex-direction: column;
    gap: 24px;
    padding-bottom: 60px;
}

.category-section {
    background: var(--ba-bg-card);
    border-radius: var(--ba-radius);
    box-shadow: var(--ba-shadow);
    padding: 16px 18px;
    transition: var(--transition);
}

.category-header {
    display: flex;
    align-items: baseline;
    gap: 8px;
    margin-bottom: 12px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--ba-blue-pale);
}



/* ─── 卡片基础样式 ─── */
.char-card-img {
    width: 100%;
    display: block;
}

.char-card-body .char-version {
    display: inline-block;
    font-size: 11px;
    font-weight: 600;
    color: white;
    background: var(--ba-blue);
    padding: 2px 10px;
    border-radius: 20px;
    margin-top: 4px;
}

.char-card-body .char-meta {
    font-size: 11px;
    color: var(--ba-text-secondary);
    margin: 2px 0;
}

#gsv-character-grid .character-grid {
    display: flex;
    gap: 12px;
    overflow-x: auto;
    overflow-y: hidden;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 8px;
    scrollbar-width: thin;
    scrollbar-color: var(--ba-border) transparent;
}

#gsv-character-grid .character-grid::-webkit-scrollbar {
    height: 4px;
}

#gsv-character-grid .character-grid::-webkit-scrollbar-track {
    background: transparent;
}

#gsv-character-grid .character-grid::-webkit-scrollbar-thumb {
    background: var(--ba-border);
    border-radius: 4px;
}

.category-header h3 {
    font-size: 16px;
    font-weight: 700;
    color: var(--ba-text);
    margin: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.category-header .cat-count {
    font-size: 11px;
    font-weight: 500;
    color: var(--ba-text-secondary);
    background: var(--ba-bg);
    padding: 1px 8px;
    border-radius: 20px;
    flex-shrink: 0;
}

.category-section .cat-desc {
    font-size: 12px;
    color: var(--ba-text-secondary);
    margin: 0 0 12px 0;
}

/* 横向滚动容器 */
.category-section .character-grid {
    display: flex;
    gap: 12px;
    overflow-x: auto;
    overflow-y: hidden;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 8px;
    scrollbar-width: thin;
    scrollbar-color: var(--ba-border) transparent;
}

.category-section .character-grid::-webkit-scrollbar {
    height: 4px;
}

.category-section .character-grid::-webkit-scrollbar-track {
    background: transparent;
}

.category-section .character-grid::-webkit-scrollbar-thumb {
    background: var(--ba-border);
    border-radius: 4px;
}

.category-section .character-card {
    flex: 0 0 160px;
    border-radius: 12px;
    scroll-snap-align: start;
}

.category-section .char-card-body {
    padding: 10px 12px;
}

.category-section .char-card-body h4 {
    font-size: 13px;
}

.category-section .char-card-img {
    aspect-ratio: 3/4;
    object-fit: contain;
    background: var(--ba-bg);
    width: 100%;
}

.category-section .char-card-img-placeholder {
    aspect-ratio: 3/4;
    font-size: 32px;
}

/* 桌面端卡片稍大 */
@media (min-width: 1024px) {
    .category-section .character-card {
        flex: 0 0 180px;
    }

    .category-section .char-card-body h4 {
        font-size: 14px;
    }

    .category-section .char-card-img {
        aspect-ratio: 3/4;
        object-fit: contain;
        background: var(--ba-bg);
    }

    .category-section .char-card-img-placeholder {
        aspect-ratio: 3/4;
        font-size: 32px;
    }
}

#gsv-character-grid {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

#gsv-character-grid .category-section {
    width: 100%;
}

#gsv-character-grid .category-header h3 {
    font-size: 16px;
    font-weight: 700;
    color: var(--ba-text);
    margin: 0;
}



/* ─── 工作室布局 ─── */
.studio-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 24px;
    padding: 16px 0 60px;
}

.studio-sidebar {
    position: sticky;
    top: 80px;
    align-self: start;
}

.character-card-large {
    background: var(--ba-bg-card);
    border-radius: var(--ba-radius);
    overflow: hidden;
    box-shadow: var(--ba-shadow);
    margin: 12px 0 16px;
}

.char-card-cover img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 8px;
}

.char-card-cover {
    width: 100%;
    aspect-ratio: 3/4;
    background: var(--ba-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    border-bottom: 1px solid var(--ba-border);
}

.char-card-placeholder {
    color: var(--ba-blue-light);
    font-size: 18px;
    font-weight: 500;
}

.char-card-name {
    font-size: 20px;
    font-weight: 800;
    padding: 12px 16px 2px;
    color: var(--ba-text);
}

.char-card-info {
    font-size: 13px;
    color: var(--ba-text-secondary);
    padding: 0 16px 16px;
}

.char-select-dropdown {
    margin-top: 8px;
}

.char-select-dropdown label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--ba-text-secondary);
    margin-bottom: 4px;
}

.char-select-dropdown select {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--ba-border);
    border-radius: var(--ba-radius-sm);
    font-size: 14px;
    font-family: inherit;
    background: white;
    color: var(--ba-text);
    cursor: pointer;
    transition: var(--transition);
}

.char-select-dropdown select:focus {
    outline: none;
    border-color: var(--ba-blue);
    box-shadow: 0 0 0 3px rgba(74, 144, 217, 0.15);
}

/* ─── 面板 ─── */
.studio-main {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.panel-section {
    background: var(--ba-bg-card);
    border-radius: var(--ba-radius);
    padding: 20px 24px;
    box-shadow: var(--ba-shadow);
}

.panel-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 16px;
    font-weight: 700;
    color: var(--ba-text);
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--ba-border);
}

/* ─── 输入选项卡 ─── */
.input-tabs {
    display: flex;
    gap: 4px;
    margin-bottom: 16px;
    background: var(--ba-bg);
    border-radius: var(--ba-radius-sm);
    padding: 4px;
}

.input-tab {
    flex: 1;
    padding: 8px 16px;
    border: none;
    background: transparent;
    color: var(--ba-text-secondary);
    font-size: 14px;
    font-weight: 500;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

.input-tab:hover {
    color: var(--ba-blue);
}

.input-tab.active {
    background: white;
    color: var(--ba-blue);
    box-shadow: 0 2px 8px rgba(74, 144, 217, 0.12);
}

.input-panel {
    display: none;
}

.input-panel.active {
    display: block;
}

/* ─── 上传区域 ─── */
.upload-zone {
    border: 2px dashed var(--ba-border);
    border-radius: var(--ba-radius-sm);
    padding: 32px 20px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
}

.upload-zone:hover {
    border-color: var(--ba-blue-light);
    background: var(--ba-blue-pale);
}

.upload-zone p {
    font-size: 14px;
    font-weight: 500;
    color: var(--ba-text);
    margin: 8px 0 4px;
}

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

.file-info {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background: var(--ba-blue-pale);
    border-radius: var(--ba-radius-sm);
    margin-top: 12px;
    font-size: 13px;
    color: var(--ba-blue);
    font-weight: 500;
}

/* ─── TTS ─── */
.tts-input {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--ba-border);
    border-radius: var(--ba-radius-sm);
    font-size: 14px;
    font-family: inherit;
    resize: vertical;
    transition: var(--transition);
}

.tts-input:focus {
    outline: none;
    border-color: var(--ba-blue);
    box-shadow: 0 0 0 3px rgba(74, 144, 217, 0.15);
}

.tts-voice-select {
    margin: 12px 0;
}

.tts-voice-select label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--ba-text-secondary);
    margin-bottom: 4px;
}

.tts-voice-select select {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--ba-border);
    border-radius: var(--ba-radius-sm);
    font-size: 14px;
    font-family: inherit;
    background: white;
}

/* ─── 参数控件 ─── */
.params-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px 24px;
}

.param-item label {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    font-weight: 600;
    color: var(--ba-text);
    margin-bottom: 4px;
}

.param-val {
    color: var(--ba-blue);
    font-weight: 700;
}

.param-item input[type="range"] {
    width: 100%;
    height: 6px;
    -webkit-appearance: none;
    appearance: none;
    background: var(--ba-border);
    border-radius: 3px;
    outline: none;
    transition: var(--transition);
}

.param-item input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--ba-blue);
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(74, 144, 217, 0.3);
    transition: var(--transition);
}

.param-item input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.15);
}

.param-item input[type="range"]::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--ba-blue);
    cursor: pointer;
    border: none;
}

.param-desc {
    font-size: 11px;
    color: var(--ba-text-secondary);
    margin-top: 2px;
    display: block;
}

.f0-method {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--ba-border);
}

.f0-options {
    display: flex;
    gap: 8px;
    margin-top: 8px;
}

.f0-option {
    flex: 1;
}

.f0-option input {
    display: none;
}

.f0-option span {
    display: block;
    text-align: center;
    padding: 10px 12px;
    border: 2px solid var(--ba-border);
    border-radius: var(--ba-radius-sm);
    font-size: 13px;
    font-weight: 600;
    color: var(--ba-text-secondary);
    cursor: pointer;
    transition: var(--transition);
}

.f0-option span small {
    display: block;
    font-weight: 400;
    font-size: 11px;
    margin-top: 2px;
    opacity: 0.7;
}

.f0-option input:checked + span {
    border-color: var(--ba-blue);
    background: var(--ba-blue-pale);
    color: var(--ba-blue);
}

.f0-option:hover span {
    border-color: var(--ba-blue-light);
}

.param-select {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--ba-border);
    border-radius: var(--ba-radius-sm);
    font-size: 14px;
    font-family: inherit;
    background: white;
}

/* ─── 输出区域 ─── */
.output-section {
    text-align: center;
}

.convert-status {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 16px;
    color: var(--ba-blue);
    font-weight: 500;
}

.status-spinner {
    width: 20px;
    height: 20px;
    border: 3px solid var(--ba-border);
    border-top-color: var(--ba-blue);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.output-area {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--ba-border);
}

.output-area h4 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 8px;
}

.output-info {
    font-size: 13px;
    color: var(--ba-text-secondary);
    background: var(--ba-bg);
    padding: 8px 12px;
    border-radius: var(--ba-radius-sm);
    margin-bottom: 12px;
    font-family: monospace;
}

.output-player {
    margin: 12px 0;
}

.output-player audio {
    width: 100%;
    border-radius: var(--ba-radius-sm);
}

.btn-download {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 24px;
    background: var(--ba-blue-pale);
    color: var(--ba-blue);
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
}

.btn-download:hover {
    background: var(--ba-blue);
    color: white;
}

/* ─── UVR5 标签页 ─── */
.uvr5-tabs {
    display: flex;
    gap: 4px;
    margin: 0 auto 20px;
    background: var(--ba-bg);
    border-radius: var(--ba-radius-sm);
    padding: 4px;
    max-width: 400px;
}

.uvr5-tabs .input-tab {
    flex: 1;
}

.uvr5-tab-content {
    display: none;
}

.uvr5-tab-content.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

/* ─── UVR5 布局 ─── */
.uvr5-layout {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 24px;
    padding-bottom: 60px;
}

.uvr5-input {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.uvr5-output {
    min-height: 300px;
}

.uvr5-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 300px;
    background: var(--ba-bg-card);
    border-radius: var(--ba-radius);
    box-shadow: var(--ba-shadow);
    color: var(--ba-text-secondary);
    font-size: 15px;
}

.uvr5-result-card {
    background: var(--ba-bg-card);
    border-radius: var(--ba-radius);
    padding: 20px;
    box-shadow: var(--ba-shadow);
    margin-bottom: 16px;
}

.uvr5-result-card h4 {
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--ba-text);
}

.uvr5-result-card audio {
    width: 100%;
    border-radius: var(--ba-radius-sm);
}

/* ─── 滚动条 ─── */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--ba-border);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--ba-blue-light);
}

/* ─── 进度条 ─── */
.progress-bar-wrap {
    width: 100%;
    height: 6px;
    background: var(--ba-border);
    border-radius: 3px;
    margin: 8px 0;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--ba-blue), var(--ba-blue-light));
    border-radius: 3px;
    transition: width 0.5s ease;
}

/* ─── GSV 生成按钮禁用态 ─── */
#btn-gsv-generate:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

/* ════════════════════════════════════════
   移动端优化
   ════════════════════════════════════════ */

/* 平板 */
@media (max-width: 768px) {
    .studio-layout {
        grid-template-columns: 1fr;
    }

    .studio-sidebar {
        position: static;
    }

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

    .character-grid {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
        gap: 12px;
    }

    .hero-title {
        font-size: 32px;
    }

    .uvr5-layout {
        grid-template-columns: 1fr;
    }

    .nav-links {
        gap: 0;
    }

    .nav-link {
        padding: 8px 10px;
        font-size: 13px;
    }

    .hero {
        padding: 40px 16px 24px;
    }

    .hero-desc {
        font-size: 14px;
    }

    .section-header h2 {
        font-size: 22px;
    }

    .character-card-large {
        margin: 8px 0 12px;
    }

    .char-card-name {
        font-size: 18px;
    }

    /* GSV panel inner uses studio-layout too */
    #gsv-studio-panel .studio-layout {
        grid-template-columns: 1fr;
    }

    #gsv-studio-panel .studio-sidebar {
        position: static;
    }
}

/* 大屏手机 */
@media (max-width: 600px) {
    main {
        padding-top: 48px;
    }

    .navbar {
        padding: 0 12px;
    }

    .navbar {
        padding: 0 12px;
    }

    .nav-inner {
        height: 48px;
    }

    .brand-icon {
        width: 24px;
        height: 24px;
        font-size: 10px;
    }

    .brand-text {
        font-size: 14px;
    }

    .nav-sep {
        display: none;
    }

    .nav-link {
        padding: 6px 8px;
        font-size: 12px;
    }

    .hero-halo {
        width: 72px;
        height: 72px;
        margin-bottom: 16px;
    }

    .hero-halo::before {
        inset: 8px;
    }

    .hero-halo::after {
        inset: 18px;
    }

    .hero-title {
        font-size: 26px;
        letter-spacing: 1px;
    }

    .hero-sub {
        font-size: 16px;
    }

    .hero {
        padding: 32px 12px 16px;
    }

    .section-header {
        padding: 12px 0 16px;
    }

    .section-header h2 {
        font-size: 20px;
    }

    .page {
        padding: 12px;
    }

    main {
        padding-top: 48px;
    }

    .character-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
        padding-bottom: 40px;
    }

    .character-card {
        border-radius: 12px;
    }

    .character-card:active {
        transform: scale(0.96);
    }

    .char-card-body {
        padding: 8px 10px;
    }

    .char-card-body h4 {
        font-size: 12px;
    }

    .char-card-body .char-meta {
        font-size: 10px;
    }

    .char-card-img {
        aspect-ratio: 3/4;
    }

    .char-card-img-placeholder {
        font-size: 28px;
    }

    .category-header h3 {
        font-size: 16px;
    }

    .category-section {
        padding: 14px 16px;
    }

    .category-section .character-card {
        flex: 0 0 140px;
    }
}

/* 小屏手机 */
@media (max-width: 400px) {
    .character-grid {
        gap: 8px;
    }

    .char-card-body {
        padding: 6px 8px;
    }

    .char-card-body h4 {
        font-size: 11px;
    }

    .hero-title {
        font-size: 22px;
    }

    .btn-primary {
        padding: 10px 20px;
        font-size: 14px;
    }

    .panel-section {
        padding: 12px;
        border-radius: 12px;
    }

    .f0-options {
        flex-direction: column;
        gap: 6px;
    }

    .f0-option span {
        padding: 8px 12px;
        font-size: 12px;
    }

    .input-tab {
        padding: 6px 10px;
        font-size: 12px;
    }

    .param-item label {
        font-size: 12px;
    }

    .uvr5-tabs {
        max-width: 100%;
    }

    .uvr5-result-card {
        padding: 12px;
    }

    .upload-zone {
        padding: 20px 12px;
    }

    .upload-zone svg {
        width: 32px;
        height: 32px;
    }

    /* Slimmer hero + GSV panel */
    #gsv-cover {
        aspect-ratio: 1 !important;
        max-height: 150px;
    }

    .char-card-name {
        font-size: 16px;
        padding: 8px 12px 0;
    }

    .char-card-info {
        font-size: 12px;
        padding: 0 12px 12px;
    }

    .convert-status {
        flex-wrap: wrap;
        font-size: 13px;
    }

    .output-info {
        font-size: 11px;
        word-break: break-all;
    }

    /* Better touch targets */
    .btn-sm {
        padding: 6px 14px;
    }

    .btn-secondary {
        padding: 6px 14px;
        font-size: 12px;
    }

    .char-select-dropdown select {
        padding: 8px 12px;
        font-size: 13px;
    }
}