/* 夜晚主题 - 统一紫色系 */
[data-theme="night"] {
    --primary-color: #7c3aed;
    --primary-dark: #6d28d9;
    --secondary-color: #7c3aed;
    --accent-color: #7c3aed;
    --success-color: #7c3aed;
    --warning-color: #7c3aed;
    --error-color: #ef4444;
    --color-primary: #ffffff;
    
    /* 夜晚主题背景色 - 统一紫色渐变 */
    --theme-bg-primary: linear-gradient(135deg, #1e1b4b 0%, #312e81 30%, #4c1d95 100%);
    --theme-bg-secondary: linear-gradient(135deg, #1e1b4b 0%, #312e81 50%, #4c1d95 100%);
    --theme-accent: #7c3aed;
    --theme-text-primary: #e0e7ff;
    --theme-text-secondary: #c4b5fd;
    --theme-shadow: rgba(124, 58, 237, 0.25);
    
    /* 覆盖背景色 */
    --bg-primary: #1e1b4b;
    --bg-secondary: #0f172a;
    --text-primary: #e0e7ff;
    --text-secondary: #c4b5fd;
    --text-light: #a78bfa;
    
    /* 夜晚主题特殊效果 */
    --nav-bg: rgba(15, 23, 42, 0.98);
    --nav-border: rgba(124, 58, 237, 0.3);
    --nav-shadow: 0 4px 20px rgba(0, 0, 0, 0.3), 0 0 40px rgba(124, 58, 237, 0.1);
    --nav-text-primary: #f1f5f9;
    --nav-text-secondary: #cbd5e1;
    --nav-text-hover: #e0e7ff;
    --nav-brand-color: #e0e7ff;
    --nav-brand-glow: 0 0 20px rgba(196, 181, 253, 0.3);
    --card-bg: rgba(49, 46, 129, 0.6);
    --card-border: rgba(124, 58, 237, 0.15);
    --shadow-glow: 0 4px 20px rgba(124, 58, 237, 0.2);
    --shadow-glow-lg: 0 0 40px rgba(124, 58, 237, 0.4);
}

/* 白天主题优化 */
[data-theme="day"] .hero-section {
    background: linear-gradient(135deg, #87ceeb 0%, #98d8e8 30%, #b0e0e6 60%, #e0f6ff 100%);
}

[data-theme="day"] .hero-content {
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

[data-theme="day"] .hero-title {
    background: linear-gradient(45deg, #1e3a8a, #3b82f6, #60a5fa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

[data-theme="day"] .hero-description {
    color: rgba(30, 58, 138, 0.9);
    text-shadow: 0 1px 2px rgba(255, 255, 255, 0.8);
}

/* 日间主题导航栏滚动效果 */
[data-theme="day"] .top-nav.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    border-bottom-color: rgba(30, 64, 175, 0.2);
}

[data-theme="day"] .btn-primary {
    background: linear-gradient(45deg, #3b82f6, #60a5fa);
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

[data-theme="day"] .btn-primary:hover {
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.5);
    transform: translateY(-2px);
}

[data-theme="day"] .btn-secondary {
    background: transparent;
    border: 2px solid rgba(59, 130, 246, 0.5);
    color: #3b82f6;
}

[data-theme="day"] .btn-secondary:hover {
    background: rgba(59, 130, 246, 0.1);
    border-color: #3b82f6;
    color: #1e40af;
}

/* 白天主题app-header样式 */
[data-theme="day"] .app-header {
    background: linear-gradient(135deg, #3b82f6 0%, #60a5fa 100%);
    box-shadow: 0 4px 16px rgba(59, 130, 246, 0.3);
}

[data-theme="day"] .app-title-section {
    color: white;
}

[data-theme="day"] .date-input {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.4);
    color: white;
}

[data-theme="day"] .date-input:focus {
    border-color: rgba(255, 255, 255, 0.7);
    background: rgba(255, 255, 255, 0.3);
}

[data-theme="day"] .refresh-btn {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.4);
}

[data-theme="day"] .refresh-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.6);
}

/* 白天主题下载区域优化 */
[data-theme="day"] .download-section {
    background: linear-gradient(135deg, #e8f4fd 0%, #d1e7f7 100%);
    --color-primary: #1e40af;
}

[data-theme="day"] .download-title {
    color: #1e40af;
    text-shadow: 0 1px 3px rgba(30, 64, 175, 0.2);
}

[data-theme="day"] .download-subtitle {
    color: rgba(30, 64, 175, 0.8);
    text-shadow: 0 1px 2px rgba(255, 255, 255, 0.5);
}

[data-theme="day"] .feature-item {
    color: rgba(30, 64, 175, 0.7);
    text-shadow: 0 1px 2px rgba(255, 255, 255, 0.3);
}

[data-theme="day"] .checkmark {
    color: #3b82f6;
    filter: drop-shadow(0 1px 2px rgba(59, 130, 246, 0.3));
}

[data-theme="day"] .download-btn {
    background: linear-gradient(135deg, #1e3a8a 0%, #1e40af 100%);
    border: 1px solid rgba(30, 58, 138, 0.4);
    box-shadow: 0 4px 15px rgba(30, 58, 138, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.2);
    color: #ffffff;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
}

[data-theme="day"] .download-btn:hover {
    background: linear-gradient(135deg, #1e40af 0%, #2563eb 100%);
    box-shadow: 0 6px 20px rgba(30, 58, 138, 0.5);
    transform: translateY(-2px);
}

[data-theme="day"] .download-btn.coming-soon {
    background: linear-gradient(135deg, #4b5563 0%, #6b7280 100%);
    border-color: rgba(75, 85, 99, 0.5);
    box-shadow: 0 4px 15px rgba(75, 85, 99, 0.3);
}

[data-theme="day"] .download-btn.coming-soon:hover {
    background: linear-gradient(135deg, #374151 0%, #4b5563 100%);
    box-shadow: 0 6px 20px rgba(75, 85, 99, 0.4);
}

[data-theme="day"] .btn-icon {
    background: rgba(255, 255, 255, 0.3);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.4), 0 1px 3px rgba(0, 0, 0, 0.2);
}

[data-theme="day"] .btn-icon i {
    color: #ffffff;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
    filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.2));
}

[data-theme="day"] .btn-title {
    color: #ffffff;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
    font-weight: 700;
}

[data-theme="day"] .btn-subtitle {
    color: rgba(255, 255, 255, 0.9);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
    font-weight: 500;
}

[data-theme="day"] .coming-soon-overlay {
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(2px);
}

[data-theme="day"] .coming-soon-text {
    color: #ffffff;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.8);
    font-weight: 600;
}

/* 白天主题通用字体优化 */
[data-theme="day"] .section-title {
    color: #1e40af;
    text-shadow: 0 1px 3px rgba(30, 64, 175, 0.2);
}

[data-theme="day"] .section-subtitle {
    color: rgba(30, 64, 175, 0.8);
    text-shadow: 0 1px 2px rgba(255, 255, 255, 0.5);
}

/* 白天主题微信登录弹框优化 */
[data-theme="day"] .wechat-login-modal {
    background: rgba(0, 0, 0, 0.5);
}

[data-theme="day"] .wechat-login-dialog {
    background: #ffffff;
    border: 2px solid rgba(59, 130, 246, 0.2);
    box-shadow: 0 24px 48px rgba(59, 130, 246, 0.15), 0 0 0 1px rgba(59, 130, 246, 0.1);
}

[data-theme="day"] .wechat-login-title {
    color: #1e40af;
    text-shadow: 0 1px 2px rgba(30, 64, 175, 0.1);
}

[data-theme="day"] .wechat-login-step-text {
    color: #1e40af;
    font-weight: 600;
}

[data-theme="day"] .wechat-login-hint {
    color: rgba(30, 64, 175, 0.7);
    font-weight: 500;
}

[data-theme="day"] .wechat-login-qr {
    border: 3px solid rgba(59, 130, 246, 0.3);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 白天主题微信登录输入框优化 */
[data-theme="day"] .wechat-login-code {
    background: #ffffff;
    border: 2px solid #3b82f6;
    color: #1e40af;
    font-weight: 700;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.15);
    transition: all 0.3s ease;
}

[data-theme="day"] .wechat-login-code:focus {
    border-color: #1e40af;
    box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.2), 0 4px 12px rgba(59, 130, 246, 0.3);
    background: #f8fafc;
    transform: translateY(-1px);
}

[data-theme="day"] .wechat-login-code:hover {
    border-color: #1e40af;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.25);
}

[data-theme="day"] .wechat-login-code:active {
    transform: scale(0.95);
    box-shadow: 0 2px 6px rgba(59, 130, 246, 0.3);
}

/* 白天主题微信登录按钮优化 */
[data-theme="day"] .wechat-login-submit {
    background: linear-gradient(135deg, #3b82f6 0%, #1e40af 100%);
    border: 2px solid rgba(30, 64, 175, 0.2);
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.2);
    color: #ffffff;
    font-weight: 700;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

[data-theme="day"] .wechat-login-submit:hover {
    background: linear-gradient(135deg, #1e40af 0%, #1e3a8a 100%);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

[data-theme="day"] .wechat-login-submit:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

[data-theme="day"] .wechat-login-submit:disabled {
    background: linear-gradient(135deg, #9ca3af 0%, #6b7280 100%);
    border-color: rgba(156, 163, 175, 0.3);
    box-shadow: 0 2px 8px rgba(156, 163, 175, 0.2);
    color: #ffffff;
    cursor: not-allowed;
    transform: none;
}

/* 白天主题手机端微信登录输入框优化 */
@media (max-width: 768px) {
    [data-theme="day"] .wechat-login-code {
        border: 3px solid #3b82f6;
        background: #ffffff;
        color: #1e40af;
        font-weight: 800;
        box-shadow: 0 3px 10px rgba(59, 130, 246, 0.2);
        transition: all 0.3s ease;
    }
    
    [data-theme="day"] .wechat-login-code:focus {
        border-color: #1e40af;
        box-shadow: 0 0 0 4px rgba(30, 64, 175, 0.25), 0 6px 15px rgba(59, 130, 246, 0.4);
        background: #f1f5f9;
        transform: translateY(-2px) scale(1.05);
    }
    
    [data-theme="day"] .wechat-login-code:hover {
        border-color: #1e40af;
        box-shadow: 0 6px 15px rgba(59, 130, 246, 0.3);
        transform: translateY(-1px);
    }
    
    [data-theme="day"] .wechat-login-code:active {
        transform: scale(0.95);
        box-shadow: 0 3px 8px rgba(59, 130, 246, 0.4);
    }
    
    [data-theme="day"] .wechat-login-dialog {
        border: 3px solid rgba(59, 130, 246, 0.3);
        box-shadow: 0 32px 64px rgba(59, 130, 246, 0.2), 0 0 0 2px rgba(59, 130, 246, 0.15);
    }
    
    [data-theme="day"] .wechat-login-qr {
        display: flex;
        align-items: center;
        justify-content: center;
        border: 3px solid rgba(59, 130, 246, 0.4);
        box-shadow: 0 6px 15px rgba(59, 130, 246, 0.25);
    }
    
    [data-theme="day"] .wechat-login-title {
        color: #1e40af;
        font-weight: 800;
        text-shadow: 0 2px 4px rgba(30, 64, 175, 0.15);
    }
    
    [data-theme="day"] .wechat-login-step-text {
        color: #1e40af;
        font-weight: 700;
        font-size: 15px;
    }
    
    [data-theme="day"] .wechat-login-hint {
        color: rgba(30, 64, 175, 0.8);
        font-weight: 600;
        font-size: 13px;
    }
}

@media (max-width: 480px) {
    [data-theme="day"] .wechat-login-code {
        border: 3px solid #3b82f6;
        background: #ffffff;
        color: #1e40af;
        font-weight: 800;
        box-shadow: 0 4px 12px rgba(59, 130, 246, 0.25);
    }
    
    [data-theme="day"] .wechat-login-code:focus {
        border-color: #1e40af;
        box-shadow: 0 0 0 5px rgba(30, 64, 175, 0.3), 0 8px 20px rgba(59, 130, 246, 0.5);
        background: #f1f5f9;
        transform: translateY(-3px) scale(1.08);
    }
    
    [data-theme="day"] .wechat-login-dialog {
        border: 4px solid rgba(59, 130, 246, 0.4);
        box-shadow: 0 40px 80px rgba(59, 130, 246, 0.25), 0 0 0 3px rgba(59, 130, 246, 0.2);
    }
    
    [data-theme="day"] .wechat-login-qr {
        display: flex;
        align-items: center;
        justify-content: center;
        border: 4px solid rgba(59, 130, 246, 0.5);
        box-shadow: 0 8px 20px rgba(59, 130, 246, 0.3);
    }
    
    [data-theme="day"] .wechat-login-title {
        font-size: 20px;
        font-weight: 800;
        text-shadow: 0 2px 4px rgba(30, 64, 175, 0.2);
    }
    
    [data-theme="day"] .wechat-login-step-text {
        font-size: 14px;
        font-weight: 700;
    }
    
    [data-theme="day"] .wechat-login-hint {
        font-size: 12px;
        font-weight: 600;
    }
}

@media (max-width: 360px) {
    [data-theme="day"] .wechat-login-code {
        border: 3px solid #3b82f6;
        background: #ffffff;
        color: #1e40af;
        font-weight: 800;
        box-shadow: 0 5px 15px rgba(59, 130, 246, 0.3);
    }
    
    [data-theme="day"] .wechat-login-code:focus {
        border-color: #1e40af;
        box-shadow: 0 0 0 6px rgba(30, 64, 175, 0.35), 0 10px 25px rgba(59, 130, 246, 0.6);
        background: #f1f5f9;
        transform: translateY(-4px) scale(1.1);
    }
    
    [data-theme="day"] .wechat-login-dialog {
        border: 4px solid rgba(59, 130, 246, 0.5);
        box-shadow: 0 48px 96px rgba(59, 130, 246, 0.3), 0 0 0 4px rgba(59, 130, 246, 0.25);
    }
    
    [data-theme="day"] .wechat-login-qr {
        display: flex;
        align-items: center;
        justify-content: center;
        border: 4px solid rgba(59, 130, 246, 0.6);
        box-shadow: 0 10px 25px rgba(59, 130, 246, 0.4);
    }
    
    [data-theme="day"] .wechat-login-title {
        font-size: 18px;
        font-weight: 800;
        text-shadow: 0 3px 6px rgba(30, 64, 175, 0.25);
    }
    
    [data-theme="day"] .wechat-login-step-text {
        font-size: 13px;
        font-weight: 700;
    }
    
    [data-theme="day"] .wechat-login-hint {
        font-size: 11px;
        font-weight: 600;
    }
}

/* 白天主题卡片内容优化 */
[data-theme="day"] .card-content h3 {
    color: #1e40af;
    text-shadow: 0 1px 2px rgba(30, 64, 175, 0.2);
}

[data-theme="day"] .card-content p {
    color: rgba(30, 64, 175, 0.7);
    text-shadow: 0 1px 2px rgba(255, 255, 255, 0.3);
}

/* 夜间主题优化 */
[data-theme="night"] .hero-section {
    background: linear-gradient(135deg, #0f0f23 0%, #1a1a2e 50%, #16213e 100%);
}

/* 夜间主题app-header样式 */
[data-theme="night"] .app-header {
    background: linear-gradient(135deg, #2d1b69 0%, #4c1d95 100%);
    box-shadow: 0 4px 16px rgba(124, 58, 237, 0.4);
}

[data-theme="night"] .app-title-section {
    color: #e0e7ff;
}

[data-theme="night"] .date-input {
    background: rgba(30, 30, 46, 0.6);
    border-color: rgba(196, 181, 253, 0.3);
    color: #e0e7ff;
}

[data-theme="night"] .date-input:focus {
    border-color: rgba(196, 181, 253, 0.6);
    background: rgba(30, 30, 46, 0.8);
}

[data-theme="night"] .refresh-btn {
    background: rgba(30, 30, 46, 0.6);
    border-color: rgba(196, 181, 253, 0.3);
}

[data-theme="night"] .refresh-btn:hover {
    background: rgba(30, 30, 46, 0.8);
    border-color: rgba(196, 181, 253, 0.5);
}

[data-theme="night"] .hero-content {
    text-shadow: 0 0 20px rgba(255, 255, 255, 0.1);
}

[data-theme="night"] .hero-title {
    background: linear-gradient(45deg, #e0e7ff, #c4b5fd, #a78bfa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

[data-theme="night"] .hero-description {
    color: rgba(224, 231, 255, 0.9);
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.1);
}

[data-theme="night"] .btn-primary {
    background: linear-gradient(45deg, #7c3aed, #8b5cf6);
    box-shadow: 0 4px 15px rgba(124, 58, 237, 0.3);
}

[data-theme="night"] .btn-primary:hover {
    box-shadow: 0 6px 20px rgba(124, 58, 237, 0.5);
    transform: translateY(-2px);
}

[data-theme="night"] .btn-secondary {
    background: transparent;
    border: 2px solid rgba(124, 58, 237, 0.5);
    color: #c4b5fd;
}

[data-theme="night"] .btn-secondary:hover {
    background: rgba(124, 58, 237, 0.1);
    border-color: #7c3aed;
    color: #e0e7ff;
}

/* 夜间主题导航栏优化 */
[data-theme="night"] .top-nav {
    background: var(--nav-bg);
    border-bottom: 1px solid var(--nav-border);
    box-shadow: var(--nav-shadow);
    backdrop-filter: blur(20px);
}

[data-theme="night"] .nav-brand {
    color: var(--nav-brand-color);
    text-shadow: var(--nav-brand-glow);
}

[data-theme="night"] .nav-brand i {
    color: var(--primary-color);
    filter: drop-shadow(0 0 8px rgba(124, 58, 237, 0.4));
}

[data-theme="night"] .nav-link {
    color: #e2e8f0;
    position: relative;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    padding: 8px 12px;
    border-radius: 6px;
    font-weight: 500;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

[data-theme="night"] .nav-link:hover {
    color: #ffffff;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
    transform: translateY(-1px);
    background: rgba(124, 58, 237, 0.08);
    box-shadow: 0 2px 8px rgba(124, 58, 237, 0.2);
}

[data-theme="night"] .nav-link.active {
    color: #ffffff;
    font-weight: 700;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
}

[data-theme="night"] .nav-link.active::after {
    background: linear-gradient(90deg, var(--primary-color), #8b5cf6);
    box-shadow: 0 0 8px rgba(124, 58, 237, 0.5);
    height: 3px;
    border-radius: 2px;
}

[data-theme="night"] .cta-nav-btn {
    background: linear-gradient(135deg, var(--primary-color), #8b5cf6);
    color: white;
    box-shadow: 0 4px 15px rgba(124, 58, 237, 0.3);
    border: 1px solid rgba(196, 181, 253, 0.2);
}

[data-theme="night"] .cta-nav-btn:hover {
    background: linear-gradient(135deg, #6d28d9, var(--primary-color));
    box-shadow: 0 6px 20px rgba(124, 58, 237, 0.4);
    transform: translateY(-2px);
    border-color: rgba(196, 181, 253, 0.4);
}

[data-theme="night"] .theme-toggle {
    background: linear-gradient(135deg, var(--primary-color), #8b5cf6);
    color: white;
    box-shadow: 0 4px 12px rgba(124, 58, 237, 0.3);
    border: 1px solid rgba(196, 181, 253, 0.2);
}

[data-theme="night"] .theme-toggle:hover {
    background: linear-gradient(135deg, #6d28d9, var(--primary-color));
    box-shadow: 0 6px 16px rgba(124, 58, 237, 0.4);
    transform: translateY(-1px);
    border-color: rgba(196, 181, 253, 0.4);
}

[data-theme="night"] .theme-toggle i {
    filter: drop-shadow(0 0 4px rgba(255, 255, 255, 0.3));
}

[data-theme="night"] .mobile-menu-toggle span {
    background: var(--nav-text-primary);
    box-shadow: 0 0 4px rgba(196, 181, 253, 0.3);
}

/* 夜间主题导航栏滚动效果 */
[data-theme="night"] .top-nav.scrolled {
    background: rgba(15, 23, 42, 0.98);
    backdrop-filter: blur(25px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4), 0 0 60px rgba(124, 58, 237, 0.15);
    border-bottom-color: rgba(124, 58, 237, 0.4);
}

/* 夜间主题下载区域优化 */
[data-theme="night"] .download-section {
    background: linear-gradient(135deg, #1e1b4b 0%, #312e81 50%, #4c1d95 100%);
    --color-primary: #ffffff;
}

[data-theme="night"] .download-title {
    color: #ffffff;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
    font-weight: 700;
}

[data-theme="night"] .download-subtitle {
    color: #f8fafc;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
    font-weight: 500;
}

[data-theme="night"] .feature-item {
    color: #e2e8f0;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.4);
    font-weight: 500;
}

[data-theme="night"] .checkmark {
    color: #c4b5fd;
    filter: drop-shadow(0 0 8px rgba(196, 181, 253, 0.4));
}

[data-theme="night"] .download-btn {
    background: linear-gradient(135deg, #6d28d9 0%, #7c3aed 100%);
    border: 1px solid rgba(196, 181, 253, 0.3);
    box-shadow: 0 4px 15px rgba(109, 40, 217, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.1);
    color: #ffffff;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.4);
}

[data-theme="night"] .download-btn:hover {
    background: linear-gradient(135deg, #5b21b6 0%, #6d28d9 100%);
    box-shadow: 0 6px 20px rgba(109, 40, 217, 0.5);
    transform: translateY(-2px);
}

[data-theme="night"] .download-btn.coming-soon {
    background: linear-gradient(135deg, #4b5563 0%, #6b7280 100%);
    border-color: rgba(107, 114, 128, 0.3);
    box-shadow: 0 4px 15px rgba(107, 114, 128, 0.2);
}

[data-theme="night"] .download-btn.coming-soon:hover {
    background: linear-gradient(135deg, #374151 0%, #4b5563 100%);
    box-shadow: 0 6px 20px rgba(107, 114, 128, 0.3);
}

[data-theme="night"] .btn-icon {
    background: rgba(255, 255, 255, 0.15);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

[data-theme="night"] .btn-title {
    color: #ffffff;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
    font-weight: 600;
}

[data-theme="night"] .btn-subtitle {
    color: #e2e8f0;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.4);
    font-weight: 500;
}

[data-theme="night"] .coming-soon-overlay {
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(3px);
}

[data-theme="night"] .coming-soon-text {
    color: #ffffff;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.6);
    font-weight: 600;
}

/* 夜间主题移动端菜单优化 */
@media (max-width: 768px) {
    [data-theme="night"] .nav-menu {
        background: rgba(15, 23, 42, 0.98);
        backdrop-filter: blur(20px);
        border: 1px solid var(--nav-border);
        border-radius: 12px;
        box-shadow: var(--nav-shadow);
    }
    
    [data-theme="night"] .nav-link {
        padding: 12px 16px;
        border-radius: 8px;
        margin: 4px;
        color: #e2e8f0;
        font-weight: 500;
        text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
    }
    
    [data-theme="night"] .nav-link:hover {
        background: rgba(124, 58, 237, 0.1);
        color: #ffffff;
        text-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
    }
    
    [data-theme="night"] .nav-link.active {
        background: rgba(124, 58, 237, 0.2);
        color: #ffffff;
        font-weight: 700;
        text-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
    }
}