/* ========================================
   天赋DESIGN - 个人网站样式
   配色：红(#E60012) 白(#FFFFFF) 灰(#F5F5F5, #333333)
   风格：极简主义
   ======================================== */

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

:root {
    --color-primary: #E60012;
    --color-primary-dark: #C4000F;
    --color-white: #FFFFFF;
    --color-black: #1A1A1A;
    --color-gray-100: #F8F8F8;
    --color-gray-200: #EEEEEE;
    --color-gray-300: #DDDDDD;
    --color-gray-400: #999999;
    --color-gray-500: #666666;
    --color-gray-600: #333333;
    --font-main: "DM Sans", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
    --transition: all 0.3s ease;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.12);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    color: var(--color-black);
    background: var(--color-white);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ---- 容器 ---- */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.container-narrow {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ---- 按钮 ---- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 36px;
    font-size: 15px;
    font-weight: 500;
    border-radius: 0;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
    letter-spacing: 1px;
}

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

.btn-primary:hover {
    background: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background: transparent;
    color: var(--color-black);
    border-color: var(--color-black);
}

.btn-outline:hover {
    background: var(--color-black);
    color: var(--color-white);
}

.btn-outline-white {
    background: transparent;
    color: var(--color-white);
    border-color: var(--color-white);
}

.btn-outline-white:hover {
    background: var(--color-white);
    color: var(--color-primary);
}

.btn-sm {
    padding: 10px 24px;
    font-size: 13px;
}

/* ---- 导航栏 ---- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-gray-200);
    transition: var(--transition);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 20px;
    letter-spacing: 2px;
}

.logo img {
    width: 40px;
    height: 40px;
    object-fit: contain;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 40px;
    list-style: none;
}

.nav-menu a {
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 1px;
    color: var(--color-gray-600);
    position: relative;
    padding: 8px 0;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: var(--transition);
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--color-primary);
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
    width: 100%;
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 8px;
}

.mobile-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-black);
    transition: var(--transition);
}

/* ---- 英雄区 (Hero) ---- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--color-white) 0%, var(--color-gray-100) 100%);
    position: relative;
    overflow: hidden;
    padding-top: 72px;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 80%;
    height: 150%;
    background: var(--color-primary);
    opacity: 0.03;
    border-radius: 50%;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-text h1 {
    font-size: 56px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
    letter-spacing: 2px;
}

.hero-text h1 span {
    color: var(--color-primary);
}

.hero-text .subtitle {
    font-size: 20px;
    color: var(--color-gray-500);
    margin-bottom: 16px;
    font-weight: 400;
    letter-spacing: 4px;
}

.hero-text .desc {
    font-size: 16px;
    color: var(--color-gray-500);
    margin-bottom: 40px;
    max-width: 480px;
    line-height: 1.8;
}

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

.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-logo {
    width: 320px;
    height: 320px;
    position: relative;
}

.hero-logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.hero-logo::before {
    content: '';
    position: absolute;
    inset: -20px;
    border: 2px solid var(--color-primary);
    opacity: 0.2;
    border-radius: 50%;
    animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.2; }
    50% { transform: scale(1.05); opacity: 0.1; }
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--color-gray-400);
    font-size: 12px;
    letter-spacing: 2px;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}

/* ---- 区块标题 ---- */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: 2px;
}

.section-header p {
    color: var(--color-gray-500);
    font-size: 16px;
    max-width: 500px;
    margin: 0 auto;
}

.section-header .line {
    width: 40px;
    height: 3px;
    background: var(--color-primary);
    margin: 20px auto 0;
}

/* ---- 精选作品 ---- */
.section-works {
    padding: 100px 0;
    background: var(--color-white);
}

.category-filter {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 28px;
    font-size: 14px;
    border: 1px solid var(--color-gray-300);
    background: var(--color-white);
    color: var(--color-gray-600);
    cursor: pointer;
    transition: var(--transition);
    letter-spacing: 1px;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
}

.works-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.work-card {
    position: relative;
    overflow: hidden;
    cursor: pointer;
    background: var(--color-gray-100);
    aspect-ratio: 4/3;
}

.work-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.work-card:hover img {
    transform: scale(1.08);
}

.work-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0) 60%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 24px;
    opacity: 0;
    transition: var(--transition);
}

.work-card:hover .work-overlay {
    opacity: 1;
}

.work-overlay h3 {
    color: var(--color-white);
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 4px;
    transform: translateY(10px);
    transition: transform 0.3s ease;
}

.work-overlay p {
    color: rgba(255,255,255,0.7);
    font-size: 13px;
    transform: translateY(10px);
    transition: transform 0.3s ease 0.1s;
}

.work-card:hover .work-overlay h3,
.work-card:hover .work-overlay p {
    transform: translateY(0);
}

.view-all {
    text-align: center;
    margin-top: 48px;
}

/* ---- 关于预览 ---- */
.section-about {
    padding: 100px 0;
    background: var(--color-gray-100);
}

.about-preview {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: 60px;
    align-items: center;
}

.about-image {
    position: relative;
}

.about-image img {
    width: 100%;
    aspect-ratio: 3/4;
    object-fit: cover;
}

.about-image::before {
    content: '';
    position: absolute;
    top: 20px;
    left: 20px;
    right: -20px;
    bottom: -20px;
    border: 3px solid var(--color-primary);
    z-index: -1;
}

.about-text h3 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 8px;
}

.about-text .role {
    color: var(--color-primary);
    font-size: 14px;
    letter-spacing: 3px;
    margin-bottom: 24px;
    font-weight: 500;
}

.about-text p {
    color: var(--color-gray-500);
    margin-bottom: 16px;
    line-height: 1.8;
}

.about-text .philosophy {
    border-left: 3px solid var(--color-primary);
    padding-left: 20px;
    margin: 24px 0;
    font-style: italic;
    color: var(--color-gray-600);
}

.stats {
    display: flex;
    gap: 40px;
    margin: 32px 0;
}

.stat-item h4 {
    font-size: 36px;
    font-weight: 700;
    color: var(--color-primary);
}

.stat-item p {
    font-size: 13px;
    color: var(--color-gray-400);
    letter-spacing: 1px;
}

/* ---- 服务 ---- */
.section-services {
    padding: 100px 0;
    background: var(--color-white);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.service-card {
    padding: 48px 32px;
    border: 1px solid var(--color-gray-200);
    text-align: center;
    transition: var(--transition);
}

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

.service-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 24px;
    background: var(--color-gray-100);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    transition: var(--transition);
}

.service-icon svg {
    width: 32px;
    height: 32px;
}

.service-card:hover .service-icon {
    background: var(--color-primary);
    color: var(--color-white);
}

.service-card h3 {
    font-size: 20px;
    margin-bottom: 12px;
}

.service-card p {
    color: var(--color-gray-500);
    font-size: 14px;
    line-height: 1.7;
}

/* ---- 联系CTA ---- */
.section-contact-cta {
    padding: 100px 0;
    background: var(--color-black);
    color: var(--color-white);
    text-align: center;
}

.section-contact-cta h2 {
    font-size: 36px;
    margin-bottom: 16px;
}

.section-contact-cta p {
    color: var(--color-gray-400);
    margin-bottom: 32px;
    font-size: 16px;
}

/* ---- 页脚 ---- */
.footer {
    background: var(--color-gray-100);
    padding: 60px 0 24px;
    border-top: 1px solid var(--color-gray-200);
}

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

.footer-brand .logo {
    margin-bottom: 16px;
}

.footer-brand p {
    color: var(--color-gray-500);
    font-size: 14px;
    line-height: 1.7;
}

.footer-column h4 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 20px;
    letter-spacing: 1px;
}

.footer-column ul {
    list-style: none;
}

.footer-column li {
    margin-bottom: 10px;
}

.footer-column a {
    color: var(--color-gray-500);
    font-size: 14px;
}

.footer-column a:hover {
    color: var(--color-primary);
}

.footer-bottom {
    border-top: 1px solid var(--color-gray-200);
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    color: var(--color-gray-400);
}

/* ---- 内页通用 ---- */
.page-header {
    padding: 160px 0 80px;
    background: linear-gradient(135deg, var(--color-gray-100) 0%, var(--color-white) 100%);
    text-align: center;
}

.page-header h1 {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 12px;
}

.page-header p {
    color: var(--color-gray-500);
    font-size: 16px;
}

.page-content {
    padding: 80px 0;
}

/* ---- 作品页面 ---- */
.works-page .works-grid {
    margin-top: 40px;
}

/* ---- 关于页面 ---- */
.about-page .about-full {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
}

.about-sidebar img {
    width: 100%;
    aspect-ratio: 3/4;
    object-fit: cover;
    margin-bottom: 24px;
}

.about-sidebar .info-item {
    margin-bottom: 16px;
}

.about-sidebar .info-item label {
    display: block;
    font-size: 12px;
    color: var(--color-gray-400);
    letter-spacing: 1px;
    margin-bottom: 4px;
}

.about-sidebar .info-item p {
    font-weight: 500;
}

.about-main h2 {
    font-size: 28px;
    margin-bottom: 20px;
}

.about-main p {
    color: var(--color-gray-500);
    margin-bottom: 16px;
    line-height: 1.8;
}

.experience-list {
    margin-top: 40px;
}

.exp-item {
    display: flex;
    gap: 30px;
    padding: 24px 0;
    border-bottom: 1px solid var(--color-gray-200);
}

.exp-year {
    min-width: 120px;
    font-weight: 600;
    color: var(--color-primary);
}

.exp-content h4 {
    font-size: 18px;
    margin-bottom: 6px;
}

.exp-content p {
    color: var(--color-gray-500);
    font-size: 14px;
}

.skills-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 20px;
}

.skill-tag {
    padding: 8px 20px;
    background: var(--color-gray-100);
    font-size: 13px;
    color: var(--color-gray-600);
    transition: var(--transition);
}

.skill-tag:hover {
    background: var(--color-primary);
    color: var(--color-white);
}

/* ---- 联系页面 ---- */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info h3 {
    font-size: 24px;
    margin-bottom: 24px;
}

.contact-item {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
    align-items: flex-start;
}

.contact-item .icon {
    width: 48px;
    height: 48px;
    background: var(--color-gray-100);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    font-size: 20px;
    flex-shrink: 0;
}

.contact-item h4 {
    font-size: 14px;
    margin-bottom: 4px;
}

.contact-item p {
    color: var(--color-gray-500);
    font-size: 14px;
}

.contact-form .form-group {
    margin-bottom: 20px;
}

.contact-form label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 8px;
    letter-spacing: 1px;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--color-gray-300);
    font-family: inherit;
    font-size: 14px;
    transition: var(--transition);
    background: var(--color-white);
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--color-primary);
}

.contact-form textarea {
    min-height: 140px;
    resize: vertical;
}

/* ---- 消息提示 ---- */
.alert {
    padding: 16px 20px;
    margin-bottom: 20px;
    font-size: 14px;
}

.alert-success {
    background: #E8F5E9;
    color: #2E7D32;
    border-left: 4px solid #2E7D32;
}

.alert-error {
    background: #FFEBEE;
    color: #C62828;
    border-left: 4px solid #C62828;
}

/* ---- 响应式 ---- */
@media (max-width: 1024px) {
    .works-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-text h1 {
        font-size: 36px;
    }
    
    .hero-text .desc {
        margin: 0 auto 40px;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-logo {
        width: 200px;
        height: 200px;
    }
    
    .hero-visual {
        order: -1;
    }
    
    .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--color-white);
        flex-direction: column;
        padding: 24px;
        gap: 0;
        border-bottom: 1px solid var(--color-gray-200);
        transform: translateY(-100%);
        opacity: 0;
        pointer-events: none;
        transition: var(--transition);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }
    
    .nav-menu li {
        width: 100%;
    }
    
    .nav-menu a {
        display: block;
        padding: 16px 0;
        border-bottom: 1px solid var(--color-gray-100);
    }
    
    .mobile-toggle {
        display: flex;
    }
    
    .works-grid {
        grid-template-columns: 1fr;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .about-preview {
        grid-template-columns: 1fr;
    }
    
    .about-image {
        max-width: 300px;
        margin: 0 auto;
    }
    
    .stats {
        justify-content: center;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-brand .logo {
        justify-content: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .about-page .about-full {
        grid-template-columns: 1fr;
    }
    
    .section-header h2 {
        font-size: 28px;
    }
    
    .page-header h1 {
        font-size: 32px;
    }
}

@media (max-width: 480px) {
    .hero-text h1 {
        font-size: 28px;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .filter-btn {
        padding: 8px 16px;
        font-size: 12px;
    }
}