/* MiSans字体 */
@font-face {
    font-family: 'MiSans';
    src: url('../font/MiSans/MiSans/MiSans VF.ttf') format('truetype');
    font-weight: 100 900;
    font-display: swap;
}

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

/* 颜色变量 - 暗色主题 */
:root {
    --bg-primary: #0d0d0d;
    --bg-secondary: #0a0a0a;
    --bg-card: #111111;
    --bg-nav: #0d2137;
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --accent: #e94560;
    --accent-hover: #ff6b81;
    --border: #333333;
    --shadow: rgba(0, 0, 0, 0.5);
}

/* 亮色主题 */
[data-theme="light"] {
    --bg-primary: #ffffff;
    --bg-secondary: #f5f5f5;
    --bg-card: #ffffff;
    --bg-nav: #e3f2fd;
    --text-primary: #111111;
    --text-secondary: #666666;
    --accent: #e94560;
    --accent-hover: #d63851;
    --border: #e0e0e0;
    --shadow: rgba(0, 0, 0, 0.1);
}

/* 基础样式 */
body {
    font-family: 'MiSans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: background 0.3s, color 0.3s;
}

section,
.brand-detail {
    width: 100%;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s;
}

ul {
    list-style: none;
}

/* 容器 */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: transparent;
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 12px 0;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
    background: transparent;
    position: relative;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 26px;
    font-weight: 600;
    color: var(--text-primary) !important;
}

.nav-logo:hover {
    color: var(--text-primary) !important;
}

.nav-logo span {
    color: var(--text-primary) !important;
}

.nav-logo-img {
    height: 30px;
    width: auto;
    object-fit: contain;
}

.logo-icon {
    font-size: 30px;
}

.nav-menu {
    display: flex;
    gap: 32px;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.nav-link {
    font-size: 16px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color 0.3s;
    padding: 8px 0;
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
}

/* 主题切换按钮 */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s;
    margin-left: 16px;
}

.theme-toggle:hover {
    border-color: var(--text-primary);
    background: var(--bg-card);
}

.theme-icon {
    width: 20px;
    height: 20px;
    color: var(--text-primary);
    transition: all 0.3s;
}

.theme-toggle .sun {
    display: none;
}

.theme-toggle .moon {
    display: block;
}

[data-theme="light"] .theme-toggle .sun {
    display: block;
}

[data-theme="light"] .theme-toggle .moon {
    display: none;
}

/* 汉堡菜单 */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: transform 0.3s;
}

/* 主页英雄区 */
.hero {
    padding: 120px 0 30px;
    text-align: left;
    background: var(--bg-primary);
}

.hero .container {
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border);
}

.hero-title {
    font-size: 48px;
    font-weight: 300;
    margin-bottom: 16px;
    line-height: 1.2;
    color: var(--text-primary) !important;
}

.hero-subtitle {
    font-size: 18px;
    font-weight: 300;
    color: var(--text-secondary);
    margin-bottom: 40px;
    max-width: 600px;
}

.hero-submit-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    font-size: 18px;
    font-weight: 500;
    color: var(--text-secondary);
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 8px;
    text-decoration: none;
    transition: color 0.3s, background 0.3s, border-color 0.3s;
}

.hero-submit-btn:hover {
    color: var(--accent);
    border-color: var(--accent);
    background: rgba(233, 69, 96, 0.1);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 48px;
    margin-top: 60px;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 36px;
    font-weight: 700;
    color: var(--accent);
}

.stat-label {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 4px;
}

/* 品牌网格 - 两列布局 */
.brands-section {
    padding: 30px 0 80px;
}

.brands-section .section-header {
    margin-bottom: 20px;
}

.section-header {
    text-align: left;
    margin-bottom: 30px;
}

.section-tag {
    display: inline-block;
    font-family: 'MiSans', sans-serif;
    font-size: 14px;
    color: var(--accent);
    letter-spacing: 2px;
    margin-bottom: 8px;
}

.section-title {
    font-size: 32px;
    font-weight: 600;
    margin-bottom: 12px;
}

.section-desc {
    font-size: 16px;
    color: var(--text-secondary);
}

/* 两列卡片布局 */
.brands-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

/* 品牌卡片 */
.brand-card {
    background: var(--bg-primary);
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--border);
    transition: transform 0.3s, box-shadow 0.3s;
    cursor: pointer;
    display: flex;
    flex-direction: column;
}

.brand-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px var(--shadow);
}

.brand-card-image {
    height: 200px;
    background: #0a0a0a;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    border-bottom: 1px solid var(--border);
}

.brand-logo-img {
    max-width: 180px;
    max-height: 120px;
    object-fit: contain;
    filter: brightness(0) invert(1);
    opacity: 0.9;
    transition: transform 0.3s, opacity 0.3s;
}

.brand-card:hover .brand-logo-img {
    transform: scale(1.05);
    opacity: 1;
}

.brand-card-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent 40%, rgba(255,255,255,0.05) 50%, transparent 60%);
    animation: shimmer 3s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.brand-card-content {
    padding: 20px;
    flex: 1;
}

.brand-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}

.brand-card-name {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
}

.brand-card-name-en {
    font-size: 14px;
    color: var(--text-secondary);
}

.brand-card-models {
    font-family: 'MiSans', sans-serif;
    font-size: 13px;
    color: var(--accent);
    background: rgba(233, 69, 96, 0.1);
    padding: 4px 10px;
    border-radius: 12px;
}

.brand-card-desc {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.6;
}

.brand-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 16px;
}

.brand-card-meta {
    display: flex;
    gap: 16px;
    font-size: 13px;
    color: var(--text-secondary);
}

.brand-card-meta span {
    display: flex;
    align-items: center;
    gap: 4px;
}

.brand-card-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 500;
    color: var(--accent);
    transition: color 0.3s;
}

.brand-card-btn:hover {
    color: var(--accent-hover);
}

.brand-card-btn::after {
    content: '→';
    transition: transform 0.3s;
}

.brand-card:hover .brand-card-btn::after {
    transform: translateX(4px);
}

/* 返回按钮 */
.back-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 18px;
    font-weight: 500;
    padding: 10px 20px;
    margin-bottom: 30px;
    border: 1px solid var(--border);
    border-radius: 8px;
    transition: color 0.3s, background 0.3s;
}

.back-btn:hover {
    color: var(--accent);
    border-color: var(--accent);
    background: rgba(233, 69, 96, 0.1);
}

/* 品牌详情页 */
.brand-detail {
    padding: 100px 0 60px;
    min-height: calc(100vh - 60px);
    background: var(--bg-primary);
}

.brand-detail .section-header {
    margin-bottom: 20px;
}

.brand-header {
    text-align: left;
    margin-bottom: 30px;
    padding: 20px;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: var(--bg-card);
}

.brand-header-top {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
}

.brand-header-info {
    flex: 1;
}

.brand-header-models-badge {
    font-family: 'MiSans', sans-serif;
    font-size: 14px;
    font-weight: 600;
    color: var(--accent);
    background: rgba(233, 69, 96, 0.1);
    padding: 8px 16px;
    border-radius: 12px;
    white-space: nowrap;
}

.brand-header-icon {
    margin-bottom: 20px;
}

.brand-detail-logo {
    max-width: 200px;
    max-height: 100px;
    object-fit: contain;
    filter: brightness(0) invert(1);
    opacity: 0.95;
}

.brand-header-name {
    font-size: 40px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary) !important;
}

.brand-header-name-en {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.brand-header-desc {
    font-size: 16px;
    color: var(--text-secondary);
    max-width: 600px;
}

/* 机型网格 */
.models-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

/* 机型卡片 */
.model-card {
    background: var(--bg-primary);
    border-radius: 12px;
    padding: 24px;
    border: 1px solid var(--border);
    transition: transform 0.3s, box-shadow 0.3s;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.model-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--accent);
    transform: scaleY(0);
    transition: transform 0.3s;
}

.model-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--shadow);
}

.model-card:hover::before {
    transform: scaleY(1);
}

.model-card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 12px;
}

.model-card-name {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 4px;
}

.model-card-year {
    font-family: 'MiSans', sans-serif;
    font-size: 14px;
    color: var(--accent);
    background: rgba(233, 69, 96, 0.1);
    padding: 4px 10px;
    border-radius: 8px;
}

.model-card-desc {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.model-card-specs {
    display: flex;
    gap: 16px;
    margin-bottom: 16px;
    font-size: 13px;
}

.model-card-spec {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text-secondary);
}

.model-card-spec-icon {
    color: var(--accent);
}

.model-card-footer {
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 16px;
}

.model-card-downloads {
    display: flex;
    gap: 12px;
    width: 100%;
}

.model-card-downloads .model-card-download {
    flex: 1;
    padding: 10px 16px;
    font-size: 13px;
}

/* 下载链接组（按钮+提取码） */
.download-link-group {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    flex: 1;
}

.download-link-group .model-card-download {
    width: 100%;
}

/* 提取码弹窗 */
.code-display {
    font-size: 32px;
    font-weight: 700;
    letter-spacing: 4px;
    color: var(--text-primary);
    background: var(--bg-primary);
    border: 2px dashed var(--border);
    border-radius: 12px;
    padding: 16px 32px;
    margin: 0 auto 20px;
    display: inline-block;
    font-family: 'MiSans', sans-serif;
}

.code-copy-btn {
    display: inline-block;
    padding: 10px 28px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.25s;
}

.code-copy-btn:hover {
    background: var(--bg-secondary);
    border-color: var(--text-secondary);
}

.code-tip {
    margin-top: 14px;
    font-size: 12px;
    color: #888;
}

.model-card-download {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 10px 16px;
    border-radius: 10px;
    font-size: 13px;
    font-weight: 600;
    text-decoration: none;
    letter-spacing: 0.5px;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    background: transparent;
    border: 1px solid var(--btn-color, #888);
}

.model-card-download:hover {
    transform: translateY(-2px);
}

.model-card-download:active {
    transform: translateY(0) scale(0.96);
}

.model-card-download .download-icon {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    transition: transform 0.3s;
}

.model-card-download:hover .download-icon {
    transform: translateY(2px);
}

.model-card-download .btn-text {
    position: relative;
    z-index: 2;
}

.model-card-download .btn-ripple {
    position: absolute;
    width: 100px;
    height: 100px;
    border-radius: 50%;
    transform: translate(-50%, -50%) scale(0);
    pointer-events: none;
    z-index: 1;
    transition: transform 0.5s, opacity 0.5s;
    opacity: 0;
}

.model-card-download.btn-pressing .btn-ripple {
    transform: translate(-50%, -50%) scale(3);
    opacity: 0;
}

/* 按钮呼吸光效 */
@keyframes btnPulse {
    0% { box-shadow: 0 0 0 0 var(--btn-color, #888); }
    70% { box-shadow: 0 0 0 6px transparent; }
    100% { box-shadow: 0 0 0 0 transparent; }
}

.model-card-download:focus {
    animation: btnPulse 1s ease-out;
    outline: none;
}

/* 页脚 */
.footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--border);
    padding: 60px 0 30px;
    margin-top: auto;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 100px;
    margin-bottom: 40px;
}

.footer-brand .nav-logo {
    margin-bottom: 16px;
    color: var(--text-primary) !important;
}

.footer-brand .nav-logo span {
    color: var(--text-primary) !important;
}

.footer-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
}

.footer-col h4 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.footer-col ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-col a {
    font-size: 14px;
    color: var(--text-secondary);
    transition: color 0.3s;
}

.footer-col a:hover {
    color: var(--accent);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid var(--border);
    color: var(--text-secondary) !important;
    font-size: 13px;
}

.footer-bottom p {
    color: var(--text-secondary) !important;
}

.footer-author {
    margin-top: 8px;
    font-size: 12px;
    color: var(--text-secondary);
    opacity: 0.7;
}

/* 响应式 */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }

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

    .hero-stats {
        flex-direction: column;
        gap: 24px;
    }

    .brands-grid,
    .models-grid {
        grid-template-columns: 1fr;
    }

    .brand-card-footer {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

    .brand-card-meta {
        width: 100%;
        justify-content: space-between;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

/* 弹窗 */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    animation: fadeIn 0.2s;
}

.modal-content {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    width: 90%;
    max-width: 500px;
    max-height: 80vh;
    overflow-y: auto;
}

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

.modal-header h3 {
    font-size: 18px;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 24px;
    cursor: pointer;
    padding: 0;
    line-height: 1;
}

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

.modal-body {
    padding: 24px;
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
}