/* ================================================
   🦐 虾滑H5 - 雪山高级感设计系统
   滑雪主题 · 精致细节 · 流畅动效
   ================================================ */

/* ===== 设计系统变量 ===== */
:root {
    /* 雪山色彩系统 */
    --color-primary: #0F172A;
    --color-secondary: #3B82F6;
    --color-accent: #F97316;
    --color-snow: #FFFFFF;
    --color-ice: #F1F5F9;
    --color-sky-light: #E0F2FE;
    --color-sky-dark: #0369A1;
    --color-mountain: #1E293B;
    --color-border: #E2E8F0;
    --color-text-primary: #0F172A;
    --color-text-secondary: #64748B;
    --color-text-tertiary: #94A3B8;

    /* 间距 */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    --space-3xl: 64px;

    /* 圆角 */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 20px;
    --radius-full: 9999px;

    /* 阴影 */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);

    /* 动画 */
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
    --transition-slow: 500ms ease;

    /* 字体 */
    --font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", "Helvetica Neue", sans-serif;
}

/* ===== 基础重置 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: var(--font-family);
    background: linear-gradient(180deg, #F0F9FF 0%, #FFFFFF 50%, #F8FAFC 100%);
    color: var(--color-text-primary);
    line-height: 1.5;
    min-height: 100vh;
    overflow-x: hidden;
}

/* ===== 应用容器 ===== */
.app {
    max-width: 480px;
    margin: 0 auto;
    min-height: 100vh;
    background: var(--color-surface);
    position: relative;
    padding-bottom: 90px;
}

/* ===== 导航栏 ===== */
.nav-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-md) var(--space-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    backdrop-filter: blur(10px);
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.nav-brand .logo {
    font-size: 24px;
    display: flex;
    align-items: center;
    line-height: 1;
}

.nav-brand .nav-logo-img {
    width: 36px;
    height: 36px;
    object-fit: contain;
    display: block;
    border-radius: 6px;
}

.nav-brand .brand-name {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: -0.5px;
}

.nav-actions {
    display: flex;
    gap: var(--space-md);
}

.nav-btn {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: var(--color-background);
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 300;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    letter-spacing: -1px;
}

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

/* ===== 页面切换 ===== */
.page {
    display: none;
    animation: fadeIn var(--transition-normal) ease-out;
}

.page.active {
    display: block;
}

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

/* ===== 英雄区域 - 雪山主题 ===== */
.hero-section {
    text-align: center;
    padding: var(--space-3xl) var(--space-lg) var(--space-xl);
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: -80px;
    left: -40px;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(59,130,246,0.12) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-section::after {
    content: '';
    position: absolute;
    bottom: -40px;
    right: -60px;
    width: 180px;
    height: 180px;
    background: radial-gradient(circle, rgba(249,115,22,0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-title {
    font-size: 42px;
    font-weight: 900;
    background: linear-gradient(135deg, #0F172A 0%, #1E40AF 50%, #F97316 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-md);
    letter-spacing: -2px;
    line-height: 1.1;
    position: relative;
    z-index: 1;
}

.hero-subtitle {
    font-size: 17px;
    color: var(--color-text-secondary);
    line-height: 1.7;
    max-width: 300px;
    margin: 0 auto;
    font-weight: 500;
    position: relative;
    z-index: 1;
}

/* ===== 单双板切换 - 精致胶囊设计 ===== */
.sport-selector {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg) var(--space-xl);
}

.sport-label {
    font-size: 14px;
    color: var(--color-text-secondary);
    white-space: nowrap;
    font-weight: 600;
}

.sport-toggle {
    display: flex;
    background: linear-gradient(135deg, #F8FAFC 0%, #F1F5F9 100%);
    border-radius: var(--radius-full);
    padding: 6px;
    box-shadow: 0 4px 20px rgba(15, 23, 42, 0.08),
                inset 0 1px 0 rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(148, 163, 184, 0.2);
}

.toggle-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border: none;
    background: transparent;
    border-radius: var(--radius-full);
    font-size: 15px;
    font-weight: 600;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
}

.toggle-btn.active {
    background: linear-gradient(135deg, #3B82F6 0%, #1D4ED8 100%);
    color: #fff;
    box-shadow: 0 8px 24px rgba(59, 130, 246, 0.4),
                0 2px 8px rgba(59, 130, 246, 0.2);
}

.toggle-btn .toggle-icon {
    font-size: 18px;
    transition: transform var(--transition-fast);
}

.toggle-btn.active .toggle-icon {
    transform: scale(1.2) rotate(-5deg);
}

/* ===== 上传区域 - 精致卡片设计 ===== */
.upload-section {
    padding: 0 var(--space-lg) var(--space-xl);
}

.upload-box {
    border: 2px dashed rgba(148, 163, 184, 0.4);
    border-radius: 24px;
    padding: var(--space-3xl) var(--space-lg);
    text-align: center;
    background: linear-gradient(135deg, rgba(255,255,255,0.9) 0%, rgba(248,250,252,0.9) 100%);
    backdrop-filter: blur(10px);
    transition: all var(--transition-normal);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 24px rgba(15, 23, 42, 0.06),
                inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

.upload-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 0%, rgba(59,130,246,0.08) 0%, transparent 60%);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.upload-box:hover,
.upload-box.dragover {
    border-color: #3B82F6;
    background: linear-gradient(135deg, rgba(255,255,255,0.95) 0%, rgba(239,246,255,0.95) 100%);
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(59, 130, 246, 0.15),
                inset 0 1px 0 rgba(255, 255, 255, 1);
}

.upload-box:hover::before,
.upload-box.dragover::before {
    opacity: 1;
}

.upload-icon {
    font-size: 48px;
    margin-bottom: var(--space-md);
    position: relative;
    z-index: 1;
    filter: drop-shadow(0 4px 8px rgba(59, 130, 246, 0.2));
}

.upload-text {
    font-size: 17px;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
    position: relative;
    z-index: 1;
}

.upload-hint {
    font-size: 14px;
    color: var(--color-text-secondary);
    position: relative;
    z-index: 1;
    font-weight: 500;
}

/* 视频预览 */
.video-preview {
    position: relative;
    margin: 0 var(--space-lg) var(--space-lg);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.video-preview video {
    width: 100%;
    display: block;
}

.btn-remove {
    position: absolute;
    top: var(--space-sm);
    right: var(--space-sm);
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    background: rgba(0,0,0,0.5);
    border: none;
    color: #fff;
    font-size: 14px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 分析按钮 - 雪山渐变按钮 */
.btn-analyze {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    width: 100%;
    padding: 16px var(--space-xl);
    margin-top: var(--space-lg);
    border: none;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, #3B82F6 0%, #1D4ED8 50%, #1E40AF 100%);
    color: #fff;
    font-size: 17px;
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: 0 8px 24px rgba(59, 130, 246, 0.35),
                0 2px 8px rgba(59, 130, 246, 0.2);
    position: relative;
    overflow: hidden;
}

.btn-analyze::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s ease;
}

.btn-analyze:not(:disabled):hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 12px 32px rgba(59, 130, 246, 0.45),
                0 4px 12px rgba(59, 130, 246, 0.25);
}

.btn-analyze:not(:disabled):hover::before {
    left: 100%;
}

.btn-analyze:active {
    transform: translateY(-1px) scale(0.98);
}

.btn-analyze:disabled {
    background: linear-gradient(135deg, #E2E8F0 0%, #CBD5E1 100%);
    color: var(--color-text-tertiary);
    cursor: not-allowed;
    box-shadow: 0 2px 8px rgba(15, 23, 42, 0.08);
}

/* ===== 主要功能按钮区 ===== */
.main-feature-section {
    padding: 0 var(--space-lg) var(--space-lg);
}

.btn-main-action {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--space-xl) var(--space-lg);
    background: linear-gradient(135deg, #3B82F6 0%, #1D4ED8 50%, #1E40AF 100%);
    border: none;
    border-radius: 24px;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    box-shadow: 0 12px 32px rgba(59, 130, 246, 0.35),
                0 4px 12px rgba(59, 130, 246, 0.2);
}

.btn-main-action::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.6s ease;
}

.btn-main-action:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 16px 40px rgba(59, 130, 246, 0.45),
                0 6px 16px rgba(59, 130, 246, 0.25);
}

.btn-main-action:hover::before {
    left: 100%;
}

.btn-main-action:active {
    transform: translateY(-2px) scale(0.98);
}

.btn-main-icon {
    font-size: 48px;
    margin-bottom: var(--space-md);
    filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.2));
}

.btn-main-text {
    font-size: 20px;
    font-weight: 800;
    color: #fff;
    margin-bottom: var(--space-xs);
    letter-spacing: -0.5px;
}

.btn-main-sub {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.85);
    font-weight: 500;
}

/* ===== 功能卡片 - 精致玻璃拟态设计 ===== */
.features-grid {
    padding: var(--space-lg);
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
}

.feature-card {
    background: linear-gradient(135deg, rgba(255,255,255,0.9) 0%, rgba(248,250,252,0.9) 100%);
    border: 1px solid rgba(148, 163, 184, 0.2);
    border-radius: 20px;
    padding: var(--space-lg);
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 20px rgba(15, 23, 42, 0.06),
                inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-secondary) 0%, var(--color-accent) 100%);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.feature-card:hover {
    transform: translateY(-6px) scale(1.02);
    box-shadow: 0 12px 40px rgba(15, 23, 42, 0.12),
                0 4px 12px rgba(15, 23, 42, 0.08);
    border-color: rgba(59, 130, 246, 0.3);
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-card .feature-icon {
    font-size: 32px;
    margin-bottom: var(--space-md);
    font-weight: 300;
    letter-spacing: -0.5px;
    display: inline-block;
    filter: drop-shadow(0 4px 8px rgba(59, 130, 246, 0.2));
}

.feature-card h3 {
    font-size: 16px;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--space-xs);
    letter-spacing: -0.3px;
}

.feature-card p {
    font-size: 13px;
    color: var(--color-text-secondary);
    line-height: 1.6;
    font-weight: 500;
}

/* ===== 结果页 ===== */
.result-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    border-bottom: 1px solid var(--color-border);
}

.btn-back {
    background: none;
    border: none;
    font-size: 16px;
    color: var(--color-secondary);
    cursor: pointer;
    padding: var(--space-sm);
    margin-left: calc(-1 * var(--space-sm));
    font-weight: 500;
}

.result-header h2 {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-primary);
}

.result-content {
    padding: var(--space-xl) var(--space-lg);
}

/* 评分卡片 */
.score-card {
    background: linear-gradient(135deg, var(--color-background) 0%, #F0F7FF 100%);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    text-align: center;
    margin-bottom: var(--space-xl);
}

.score-main {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xl);
}

.score-circle {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: var(--color-surface);
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border: 4px solid var(--color-secondary);
}

.score-number {
    font-size: 40px;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1;
}

.score-label {
    font-size: 12px;
    color: var(--color-text-tertiary);
    margin-top: 2px;
}

.score-info {
    text-align: left;
}

.level-badge {
    display: inline-block;
    background: var(--color-secondary);
    color: #fff;
    padding: 4px 14px;
    border-radius: var(--radius-full);
    font-size: 14px;
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.score-desc {
    font-size: 13px;
    color: var(--color-text-secondary);
}

/* 技能展示 */
.skills-section {
    margin-bottom: var(--space-xl);
}

.skills-section h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--space-md);
}

.skills-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.skill-tag {
    display: inline-block;
    background: var(--color-background);
    border: 1px solid var(--color-border);
    padding: 6px 14px;
    border-radius: var(--radius-full);
    font-size: 13px;
    color: var(--color-text-primary);
    font-weight: 500;
}

/* 建议列表 */
.suggestions-section {
    margin-bottom: var(--space-xl);
}

.suggestions-section h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--space-md);
}

.suggestions-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.suggestions-list li {
    background: var(--color-background);
    border-radius: var(--radius-lg);
    padding: var(--space-md) var(--space-lg);
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.6;
    border-left: 3px solid var(--color-secondary);
}

/* 结果操作按钮 */
.result-actions {
    display: flex;
    gap: var(--space-md);
}

.result-actions .btn {
    flex: 1;
    padding: var(--space-md);
    border-radius: var(--radius-full);
    font-size: 14px;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    border: none;
    transition: all var(--transition-normal);
}

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

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

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

.btn-primary:hover {
    opacity: 0.85;
}

/* ===== 装备推荐页 ===== */
.page-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    border-bottom: 1px solid var(--color-border);
}

.page-header h2 {
    font-size: 18px;
    font-weight: 600;
}

.equipment-content {
    padding: var(--space-xl) var(--space-lg);
}

.level-selector {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.level-selector label {
    font-size: 14px;
    color: var(--color-text-secondary);
    white-space: nowrap;
}

.level-selector select {
    flex: 1;
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    font-size: 14px;
    background: var(--color-surface);
    color: var(--color-text-primary);
    cursor: pointer;
}

.equipment-list h3 {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-primary);
    margin: var(--space-lg) 0 var(--space-md);
}

.equipment-item {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--color-background);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-md);
}

.equipment-item img {
    width: 80px;
    height: 60px;
    object-fit: cover;
    border-radius: var(--radius-md);
}

.equipment-info h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 4px;
}

.equipment-info .meta {
    font-size: 12px;
    color: var(--color-text-tertiary);
    margin-bottom: 4px;
}

.equipment-info .price {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-accent);
}

/* ===== 历史记录页 ===== */
.history-list {
    padding: var(--space-lg);
}

.history-item {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--color-background);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-md);
}

.history-item img {
    width: 72px;
    height: 54px;
    object-fit: cover;
    border-radius: var(--radius-md);
}

.history-info h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 4px;
}

.history-info .score {
    font-size: 16px;
    font-weight: 700;
    color: var(--color-secondary);
    margin-bottom: 2px;
}

.history-info .date {
    font-size: 12px;
    color: var(--color-text-tertiary);
}

/* ===== Profile页 ===== */
.profile-content {
    padding: var(--space-xl) var(--space-lg);
    text-align: center;
}

.profile-avatar img {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    margin-bottom: var(--space-md);
}

.profile-info h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 4px;
}

.profile-info p {
    font-size: 13px;
    color: var(--color-text-secondary);
}

.stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
    margin: var(--space-xl) 0;
}

.stat-card {
    background: var(--color-background);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-number {
    font-size: 28px;
    font-weight: 700;
    color: var(--color-primary);
}

.stat-label {
    font-size: 12px;
    color: var(--color-text-tertiary);
    margin-top: 4px;
}

.menu-list {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.menu-item {
    width: 100%;
    text-align: left;
    padding: var(--space-md) var(--space-lg);
    background: none;
    border: none;
    font-size: 15px;
    color: var(--color-text-primary);
    cursor: pointer;
    border-radius: var(--radius-lg);
    transition: background var(--transition-fast);
    font-family: inherit;
}

.menu-item:hover {
    background: var(--color-background);
}

/* ===== 底部导航 ===== */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    max-width: 480px;
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
    display: flex;
    justify-content: space-around;
    padding: var(--space-sm) 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.bottom-nav .nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--space-xs) var(--space-md);
    text-decoration: none;
    color: var(--color-text-tertiary);
    font-size: 11px;
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    cursor: pointer;
    border: none;
    background: none;
    gap: 2px;
}

.bottom-nav .nav-item.active {
    color: var(--color-secondary);
}

.bottom-nav .nav-item .nav-icon-large {
    font-size: 22px;
    font-weight: 300;
    letter-spacing: -0.5px;
}

/* ===== 加载遮罩 ===== */
.loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(255,255,255,0.92);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 200;
}

/* hidden 属性优先级高于 class 的 display:flex，必须显式覆盖 */
.loading-overlay[hidden] {
    display: none !important;
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-secondary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-bottom: var(--space-lg);
}

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

.loading-text {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
}

.loading-hint {
    font-size: 13px;
    color: var(--color-text-tertiary);
}

/* ===== Toast ===== */
.toast {
    position: fixed;
    top: 80px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-primary);
    color: #fff;
    padding: var(--space-md) var(--space-xl);
    border-radius: var(--radius-full);
    font-size: 14px;
    font-weight: 500;
    z-index: 300;
    box-shadow: var(--shadow-lg);
    animation: toastIn 0.3s ease;
}

.toast[hidden] {
    display: none !important;
}

@keyframes toastIn {
    from { opacity: 0; transform: translateX(-50%) translateY(-10px); }
    to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* ===== 空状态 ===== */
.empty-state {
    text-align: center;
    padding: var(--space-3xl) var(--space-lg);
}

.empty-icon {
    font-size: 48px;
    margin-bottom: var(--space-md);
}

.empty-text {
    font-size: 14px;
    color: var(--color-text-tertiary);
}

/* ===== 动画 ===== */
.animate-fade-in {
    animation: fadeIn var(--transition-normal) ease-out;
}

/* ══════════════════════════════════════════
   🎨 穿搭参谋页面
   ══════════════════════════════════════════ */

/* Step 通用 */
.gear-step {
    padding: var(--space-lg);
    animation: fadeIn var(--transition-normal) ease-out;
}

/* 引导语 */
.gear-intro {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.gear-intro-text {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* Step1: 选择件类型 */
.gear-type-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
}

.gear-type-card {
    background: var(--color-surface);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-xl) var(--space-md);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.gear-type-card:hover {
    border-color: var(--color-secondary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

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

.gear-type-icon {
    font-size: 40px;
    margin-bottom: var(--space-sm);
    font-weight: 300;
    letter-spacing: -1px;
}

.gear-type-name {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 4px;
}

.gear-type-hint {
    font-size: 11px;
    color: var(--color-text-tertiary);
}

/* Step2: 搜索 + 列表 */
.gear-breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.breadcrumb-back {
    font-size: 14px;
    color: var(--color-secondary);
    cursor: pointer;
    font-weight: 500;
}

.breadcrumb-current {
    font-size: 13px;
    color: var(--color-text-tertiary);
}

.gear-search-box {
    margin-bottom: var(--space-md);
}

.gear-search-input {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    font-size: 14px;
    font-family: inherit;
    background: var(--color-background);
    color: var(--color-text-primary);
    outline: none;
    transition: border-color var(--transition-fast);
}

.gear-search-input:focus {
    border-color: var(--color-secondary);
}

.gear-item-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    max-height: 60vh;
    overflow-y: auto;
}

.gear-item-card {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--color-background);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
    border: 2px solid transparent;
}

.gear-item-card:hover {
    border-color: var(--color-secondary);
    background: var(--color-surface);
}

.gear-item-card:active {
    transform: scale(0.98);
}

.gear-item-img {
    width: 56px;
    height: 42px;
    object-fit: cover;
    border-radius: var(--radius-md);
    background: var(--color-border);
    flex-shrink: 0;
}

.gear-item-info {
    flex: 1;
    min-width: 0;
}

.gear-item-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 2px;
}

.gear-item-meta {
    font-size: 12px;
    color: var(--color-text-tertiary);
}

.gear-item-arrow {
    font-size: 16px;
    color: var(--color-text-tertiary);
}

/* Step3: 偏好选择 */
.gear-preference {
    padding: 0;
}

.pref-section {
    margin-bottom: var(--space-xl);
}

.pref-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--space-md);
}

.pref-options {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.pref-btn {
    padding: 8px 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    background: var(--color-surface);
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: inherit;
}

.pref-btn.active {
    background: var(--color-secondary);
    color: #fff;
    border-color: var(--color-secondary);
}

/* Step4: 结果页 */
.gear-result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-xl);
}

.gear-result-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-primary);
}

.gear-reset-btn {
    font-size: 13px;
    color: var(--color-secondary);
    background: none;
    border: none;
    cursor: pointer;
    font-weight: 500;
}

/* 三件套展示 */
.gear-combo-section {
    margin-bottom: var(--space-xl);
}

.gear-combo-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
    background: var(--color-background);
    border-radius: var(--radius-xl);
    padding: var(--space-lg);
}

.gear-combo-item {
    text-align: center;
}

.gear-combo-img-wrap {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: var(--space-sm);
    aspect-ratio: 4/3;
    display: flex;
    align-items: center;
    justify-content: center;
}

.gear-combo-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.gear-combo-label {
    font-size: 11px;
    color: var(--color-text-tertiary);
    margin-bottom: 2px;
}

.gear-combo-name {
    font-size: 12px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 2px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.gear-combo-meta {
    font-size: 10px;
    color: var(--color-text-tertiary);
}

/* 评分卡 */
.gear-score-card {
    background: linear-gradient(135deg, var(--color-background) 0%, #F0F7FF 100%);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    text-align: center;
    margin-bottom: var(--space-xl);
}

.gear-score-main {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 4px;
    margin-bottom: var(--space-sm);
}

.gear-score-num {
    font-size: 52px;
    font-weight: 700;
    color: var(--color-secondary);
    line-height: 1;
}

.gear-score-unit {
    font-size: 16px;
    color: var(--color-text-secondary);
}

.gear-score-tag {
    display: inline-block;
    background: var(--color-secondary);
    color: #fff;
    padding: 3px 14px;
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 600;
    margin-bottom: var(--space-lg);
}

.gear-score-bars {
    text-align: left;
}

.gear-score-bar-row {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-sm);
    font-size: 13px;
    color: var(--color-text-secondary);
}

.gear-score-bar-row span {
    width: 56px;
    flex-shrink: 0;
}

.bar-track {
    flex: 1;
    height: 6px;
    background: var(--color-border);
    border-radius: 3px;
    overflow: hidden;
}

.bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-secondary) 0%, #6AA8F2 100%);
    border-radius: 3px;
    transition: width 1s ease;
}

/* Tips */
.gear-tips-section {
    margin-bottom: var(--space-xl);
}

.gear-section-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--space-md);
}

/* 替代方案 */
.gear-alt-section {
    margin-bottom: var(--space-xl);
}

.gear-alt-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.gear-alt-card {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--color-background);
    border-radius: var(--radius-lg);
}

.gear-alt-score {
    font-size: 24px;
    font-weight: 700;
    color: var(--color-secondary);
    flex-shrink: 0;
    width: 48px;
    text-align: center;
}

.gear-alt-info {
    flex: 1;
}

.gear-alt-names {
    font-size: 13px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 2px;
}

.gear-alt-summary {
    font-size: 12px;
    color: var(--color-text-secondary);
    line-height: 1.5;
}

/* 真实参考 */
.gear-ref-section {
    margin-bottom: var(--space-xl);
}

.gear-ref-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.gear-ref-item {
    background: var(--color-background);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.gear-ref-item img {
    width: 100%;
    height: 100px;
    object-fit: cover;
}

.gear-ref-item p {
    font-size: 11px;
    color: var(--color-text-tertiary);
    padding: var(--space-sm);
    text-align: center;
}

.gear-ref-note {
    font-size: 12px;
    color: var(--color-text-tertiary);
    text-align: center;
}

/* ══════════════════════════════════════════
   💬 穿搭对话搜索
   ══════════════════════════════════════════ */
.gear-chat-box {
    background: var(--color-background);
    border-radius: var(--radius-xl);
    padding: var(--space-md);
    margin-bottom: var(--space-xl);
    border: 1px solid var(--color-border);
}

.chat-messages {
    min-height: 80px;
    margin-bottom: var(--space-md);
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.chat-ai {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
}

.chat-avatar {
    font-size: 20px;
    flex-shrink: 0;
    line-height: 1.4;
}

.chat-bubble {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 4px 16px 16px 16px;
    padding: 10px 14px;
    font-size: 14px;
    color: var(--color-text-primary);
    line-height: 1.6;
    max-width: 85%;
}

.chat-user {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    flex-direction: row-reverse;
}

.chat-user .chat-bubble {
    background: var(--color-secondary);
    color: #fff;
    border: none;
    border-radius: 16px 4px 16px 16px;
}

.chat-user .chat-avatar {
    opacity: 0;
}

.chat-result-item {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    display: flex;
    align-items: center;
    gap: var(--space-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    margin-top: var(--space-sm);
}

.chat-result-item:hover {
    border-color: var(--color-secondary);
    background: rgba(74,144,226,0.03);
}

.chat-result-item img {
    width: 56px;
    height: 42px;
    object-fit: cover;
    border-radius: var(--radius-md);
    flex-shrink: 0;
}

.chat-result-info {
    flex: 1;
}

.chat-result-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-primary);
}

.chat-result-meta {
    font-size: 12px;
    color: var(--color-text-tertiary);
}

.chat-result-arrow {
    color: var(--color-text-tertiary);
    font-size: 14px;
}

.chat-input-row {
    display: flex;
    gap: var(--space-sm);
}

.chat-input {
    flex: 1;
    padding: 10px 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    font-size: 14px;
    font-family: inherit;
    background: var(--color-surface);
    color: var(--color-text-primary);
    outline: none;
}

.chat-input:focus {
    border-color: var(--color-secondary);
}

.chat-send-btn {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: var(--color-secondary);
    border: none;
    color: white;
    font-size: 16px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: background var(--transition-fast);
}

.chat-send-btn:hover {
    background: var(--color-primary);
}

/* or 分隔 */
.gear-or-divider {
    text-align: center;
    margin-bottom: var(--space-lg);
    position: relative;
}

.gear-or-divider::before,
.gear-or-divider::after {
    content: '';
    position: absolute;
    top: 50%;
    width: calc(50% - 60px);
    height: 1px;
    background: var(--color-border);
}

.gear-or-divider::before { left: 0; }
.gear-or-divider::after { right: 0; }

.gear-or-divider span {
    font-size: 12px;
    color: var(--color-text-tertiary);
    background: var(--color-background);
    padding: 0 12px;
    position: relative;
}