/* DreamFace 方案展示网站 - 主样式 */
/* 作者：马靖昱 | 匹配DreamFace深色主题风格 */

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

:root {
    --bg-primary: #0a0f14;
    --bg-secondary: #0f1419;
    --bg-card: #151d26;
    --bg-card-hover: #1a252e;
    --accent: #2dd4bf;
    --accent-dark: #14b8a6;
    --accent-glow: rgba(45, 212, 191, 0.3);
    --text-primary: #ffffff;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border: rgba(255, 255, 255, 0.08);
    --border-accent: rgba(45, 212, 191, 0.3);
    --gradient-1: linear-gradient(135deg, #0a0f14 0%, #0f1419 50%, #0a1a1f 100%);
    --gradient-accent: linear-gradient(135deg, #2dd4bf 0%, #14b8a6 100%);
    --red: #ef4444;
    --green: #22c55e;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Segoe UI', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* 背景效果 */
.bg-gradient {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(ellipse at 20% 20%, rgba(45, 212, 191, 0.08) 0%, transparent 50%),
                radial-gradient(ellipse at 80% 80%, rgba(45, 212, 191, 0.05) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

.bg-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
    z-index: 0;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 70px;
    background: rgba(10, 15, 20, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 60px;
    z-index: 1000;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand-icon {
    font-size: 28px;
}

.brand-text {
    font-size: 20px;
    font-weight: 700;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 40px;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: var(--text-primary);
}

.nav-demo-btn {
    background: var(--gradient-accent) !important;
    color: #000 !important;
    padding: 10px 20px;
    border-radius: 8px;
    font-weight: 600 !important;
}

.nav-demo-btn:hover {
    opacity: 0.9;
}

/* Hero区域 */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 120px 80px 80px;
    position: relative;
    z-index: 1;
}

.hero-content {
    max-width: 600px;
}

.proposal-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(45, 212, 191, 0.1);
    border: 1px solid var(--border-accent);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 13px;
    color: var(--accent);
    margin-bottom: 24px;
}

.badge-icon {
    font-size: 16px;
}

.hero-title {
    margin-bottom: 24px;
}

.title-gradient {
    display: block;
    font-size: 56px;
    font-weight: 800;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.1;
}

.title-sub {
    display: block;
    font-size: 48px;
    font-weight: 700;
    color: var(--text-primary);
    margin-top: 8px;
}

.hero-desc {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 32px;
    line-height: 1.7;
}

.hero-meta {
    display: flex;
    align-items: center;
    gap: 24px;
    margin-bottom: 40px;
    padding: 20px;
    background: var(--bg-card);
    border-radius: 12px;
    border: 1px solid var(--border);
}

.meta-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.meta-label {
    font-size: 12px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.meta-value {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
}

.meta-divider {
    width: 1px;
    height: 36px;
    background: var(--border);
}

.hero-actions {
    display: flex;
    gap: 16px;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: var(--gradient-accent);
    color: #000;
    padding: 16px 32px;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 40px var(--accent-glow);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: transparent;
    color: var(--text-primary);
    padding: 16px 32px;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    border: 1px solid var(--border);
    transition: all 0.2s;
}

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

/* Hero视觉区 */
.hero-visual {
    position: relative;
}

.phone-mockup {
    width: 300px;
    height: 620px;
    background: var(--bg-card);
    border-radius: 40px;
    padding: 12px;
    border: 3px solid #333;
    box-shadow: 0 50px 100px rgba(0,0,0,0.5), 0 0 0 1px rgba(255,255,255,0.1);
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: var(--bg-secondary);
    border-radius: 32px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.phone-screen img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* 通用Section样式 */
section {
    padding: 100px 80px;
    position: relative;
    z-index: 1;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-block;
    background: rgba(45, 212, 191, 0.1);
    color: var(--accent);
    padding: 6px 14px;
    border-radius: 16px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 16px;
}

.section-header h2 {
    font-size: 40px;
    font-weight: 700;
}

/* 价值区域 */
.value-cards {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    max-width: 1000px;
    margin: 0 auto;
}

.value-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 40px;
    flex: 1;
}

.value-card.arrow-card {
    flex: 0;
    background: transparent;
    border: none;
    padding: 0;
    font-size: 32px;
    color: var(--accent);
}

.card-icon {
    width: 60px;
    height: 60px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin-bottom: 20px;
}

.card-icon.red {
    background: rgba(239, 68, 68, 0.1);
    color: var(--red);
}

.card-icon.green {
    background: rgba(34, 197, 94, 0.1);
    color: var(--green);
}

.value-card h3 {
    font-size: 20px;
    margin-bottom: 20px;
}

.problem-list, .solution-list {
    list-style: none;
}

.problem-list li, .solution-list li {
    padding: 10px 0;
    color: var(--text-secondary);
    font-size: 14px;
    border-bottom: 1px solid var(--border);
}

.problem-list li:last-child, .solution-list li:last-child {
    border-bottom: none;
}

.highlight {
    color: var(--red);
    font-weight: 600;
}

.metric {
    color: var(--green);
    font-weight: 700;
    font-size: 18px;
    margin-right: 8px;
}

/* 核心对比区域 */
.core-section {
    background: var(--bg-secondary);
}

.compare-flow {
    max-width: 1000px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.flow-before, .flow-after {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 30px;
}

.flow-before h4 {
    color: var(--red);
    font-size: 16px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.flow-after h4 {
    color: var(--green);
    font-size: 16px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.flow-steps {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 16px;
}

.flow-steps .step {
    background: var(--bg-secondary);
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 13px;
    color: var(--text-secondary);
}

.flow-steps .step.highlight {
    background: rgba(45, 212, 191, 0.1);
    color: var(--accent);
    border: 1px solid var(--border-accent);
}

.flow-steps .arrow {
    color: var(--text-muted);
}

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

/* 文档入口 */
.docs-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.doc-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 24px;
    text-decoration: none;
    display: flex;
    align-items: flex-start;
    gap: 16px;
    transition: all 0.3s;
    position: relative;
}

.doc-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent);
    transform: translateY(-4px);
}

.doc-card.featured {
    border-color: var(--border-accent);
}

.doc-icon {
    font-size: 32px;
    flex-shrink: 0;
}

.doc-info {
    flex: 1;
}

.doc-info h3 {
    font-size: 15px;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.doc-info p {
    font-size: 12px;
    color: var(--text-muted);
    line-height: 1.5;
}

.doc-tag {
    display: inline-block;
    background: rgba(45, 212, 191, 0.1);
    color: var(--accent);
    padding: 3px 8px;
    border-radius: 4px;
    font-size: 10px;
    margin-top: 8px;
}

.doc-arrow {
    color: var(--text-muted);
    font-size: 18px;
    transition: transform 0.2s;
}

.doc-card:hover .doc-arrow {
    transform: translateX(4px);
    color: var(--accent);
}

/* Demo区域 */
.demo-section {
    background: linear-gradient(135deg, rgba(45, 212, 191, 0.05) 0%, transparent 50%);
}

.demo-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 80px;
}

.demo-text {
    flex: 1;
}

.demo-text h2 {
    font-size: 36px;
    margin-bottom: 16px;
}

.demo-text > p {
    color: var(--text-secondary);
    margin-bottom: 30px;
    line-height: 1.7;
}

.demo-features {
    list-style: none;
    margin-bottom: 30px;
}

.demo-features li {
    padding: 10px 0;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 12px;
}

.demo-features i {
    color: var(--accent);
}

.btn-demo {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: var(--gradient-accent);
    color: #000;
    padding: 18px 36px;
    border-radius: 12px;
    font-size: 18px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s;
}

.btn-demo:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 50px var(--accent-glow);
}

.demo-preview {
    flex-shrink: 0;
}

.demo-phone {
    width: 320px;
    height: 660px;
    background: #1a1a1a;
    border-radius: 44px;
    padding: 10px;
    border: 3px solid #333;
    box-shadow: 0 50px 100px rgba(0,0,0,0.5);
    overflow: hidden;
}

.demo-phone iframe {
    width: 100%;
    height: 100%;
    border-radius: 36px;
    background: var(--bg-primary);
}

/* 页脚 */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: 60px 80px 30px;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 40px;
    border-bottom: 1px solid var(--border);
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 18px;
    font-weight: 600;
}

.footer-info p {
    color: var(--text-secondary);
    font-size: 14px;
    margin: 4px 0;
}

.footer-info strong {
    color: var(--accent);
}

.footer-bottom {
    max-width: 1200px;
    margin: 0 auto;
    padding-top: 20px;
    text-align: center;
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 13px;
}

/* 响应式 */
@media (max-width: 1200px) {
    .docs-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 900px) {
    .hero {
        flex-direction: column;
        text-align: center;
        padding: 120px 40px 60px;
    }
    
    .hero-visual {
        margin-top: 60px;
    }
    
    .hero-meta {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .value-cards {
        flex-direction: column;
    }
    
    .value-card.arrow-card {
        transform: rotate(90deg);
    }
    
    .demo-content {
        flex-direction: column-reverse;
    }
    
    .demo-text {
        text-align: center;
    }
    
    section {
        padding: 60px 30px;
    }
    
    .navbar {
        padding: 0 30px;
    }
    
    .footer {
        padding: 40px 30px 20px;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 30px;
        text-align: center;
    }
}

@media (max-width: 600px) {
    .title-gradient {
        font-size: 36px;
    }
    
    .title-sub {
        font-size: 28px;
    }
    
    .docs-grid {
        grid-template-columns: 1fr;
    }
    
    .nav-links a:not(.nav-demo-btn) {
        display: none;
    }
}

/* ========== 移动端 H5 专属样式 ========== */

/* 移动端横幅 */
.mobile-banner {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 44px;
    background: linear-gradient(135deg, #0d3d38 0%, #1a252e 100%);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    z-index: 1001;
    border-bottom: 1px solid var(--border-accent);
}

.mobile-banner span {
    color: var(--accent);
    font-size: 13px;
    font-weight: 500;
}

.mobile-demo-btn {
    background: var(--gradient-accent);
    color: #000;
    padding: 6px 14px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
    text-decoration: none;
}

/* 移动端设备样式调整 */
.mobile-device .navbar {
    top: 44px;
    height: 56px;
    padding: 0 16px;
}

.mobile-device .hero {
    padding: 130px 20px 40px;
    min-height: auto;
}

.mobile-device .hero-content {
    max-width: 100%;
}

.mobile-device .title-gradient {
    font-size: 28px;
}

.mobile-device .title-sub {
    font-size: 22px;
}

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

.mobile-device .hero-meta {
    flex-direction: column;
    gap: 12px;
    padding: 16px;
}

.mobile-device .meta-divider {
    display: none;
}

.mobile-device .hero-actions {
    flex-direction: column;
    gap: 12px;
}

.mobile-device .btn-primary,
.mobile-device .btn-secondary {
    width: 100%;
    justify-content: center;
    padding: 14px 20px;
}

.mobile-device section {
    padding: 40px 16px;
}

.mobile-device .section-header h2 {
    font-size: 24px;
}

.mobile-device .value-cards {
    gap: 20px;
}

.mobile-device .value-card {
    padding: 24px;
}

.mobile-device .value-card.arrow-card {
    padding: 10px;
    font-size: 24px;
}

.mobile-device .docs-grid {
    gap: 12px;
}

.mobile-device .doc-card {
    padding: 16px;
}

.mobile-device .doc-icon {
    font-size: 24px;
}

.mobile-device .doc-info h3 {
    font-size: 14px;
}

.mobile-device .doc-info p {
    font-size: 11px;
}

.mobile-device .demo-section {
    padding: 40px 16px;
}

.mobile-device .demo-text h2 {
    font-size: 24px;
}

.mobile-device .demo-features li {
    font-size: 13px;
}

.mobile-device .btn-demo {
    width: 100%;
    justify-content: center;
    padding: 16px 24px;
}

.mobile-device .demo-preview {
    display: none;
}

.mobile-device .footer {
    padding: 30px 16px 20px;
}

.mobile-device .footer-brand {
    font-size: 14px;
}

.mobile-device .footer-info p {
    font-size: 12px;
}

/* 移动端触摸优化 */
.mobile-device a,
.mobile-device button {
    -webkit-tap-highlight-color: transparent;
}

.mobile-device .doc-card:active {
    transform: scale(0.98);
    background: var(--bg-card-hover);
}

/* 移动端滚动优化 */
.mobile-device {
    -webkit-overflow-scrolling: touch;
    overflow-x: hidden;
}

/* 移动端安全区域适配 (iPhone X+) */
@supports (padding: max(0px)) {
    .mobile-device .mobile-banner {
        padding-top: max(0px, env(safe-area-inset-top));
        height: calc(44px + max(0px, env(safe-area-inset-top)));
    }
    
    .mobile-device .footer {
        padding-bottom: max(20px, env(safe-area-inset-bottom));
    }
}