/* 
 * 主要样式文件
 * 参考Poppr网站风格
 */

/* ===== 主题变量 ===== */
:root {
    /* 默认主题（浅色） */
    --primary-color: #000000;
    --secondary-color: #ffffff;
    --accent-color: #f0f0f0;
    --text-color: #333333;
    --light-gray: #f5f5f5;
    --medium-gray: #cccccc;
    --dark-gray: #666666;
    --bg-pattern: url('../images/background/light-pattern.svg');
    --hero-bg: url('../GRAVITY - LIVE VISUALS - MOONS 2.gif');
    --overlay-color: rgba(255, 255, 255, 0.8);
    --card-bg: #ffffff;
    --card-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    --header-bg: rgba(255, 255, 255, 0.9);
    
    /* 通用变量 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 8rem;
    --font-sans: 'Helvetica Neue', Arial, sans-serif;
    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* 深色主题 */
[data-theme="dark"] {
    --primary-color: #ffffff;
    --secondary-color: #121212;
    --accent-color: #2a2a2a;
    --text-color: #f0f0f0;
    --light-gray: #2a2a2a;
    --medium-gray: #444444;
    --dark-gray: #aaaaaa;
    --bg-pattern: url('../images/background/dark-pattern.svg');
    --hero-bg: url('../GRAVITY - LIVE VISUALS - MOONS 2.gif');
    --overlay-color: rgba(18, 18, 18, 0.8);
    --card-bg: #1e1e1e;
    --card-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    --header-bg: rgba(18, 18, 18, 0.9);
}

/* 彩色主题 */
[data-theme="colorful"] {
    --primary-color: #ff6b6b;
    --secondary-color: #ffffff;
    --accent-color: #4ecdc4;
    --text-color: #333333;
    --light-gray: #f7f7f7;
    --medium-gray: #dddddd;
    --dark-gray: #666666;
    --bg-pattern: url('../images/background/colorful-pattern.svg');
    --hero-bg: url('../GRAVITY - LIVE VISUALS - MOONS 2.gif');
    --overlay-color: rgba(255, 255, 255, 0.8);
    --card-bg: #ffffff;
    --card-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    --header-bg: rgba(255, 255, 255, 0.9);
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
    background-color: var(--secondary-color);
    background-image: var(--bg-pattern);
    background-size: 200px;
    background-repeat: repeat;
    background-attachment: fixed;
    transition: background-color var(--transition-medium), color var(--transition-medium);
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: all var(--transition-fast);
}

a:hover {
    opacity: 0.7;
}

ul, ol {
    list-style: none;
}

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

/* ===== 主题切换器 ===== */
.theme-switcher {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.theme-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid var(--primary-color);
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: all var(--transition-fast);
    background-color: var(--card-bg);
    box-shadow: var(--card-shadow);
}

.theme-btn:hover {
    transform: scale(1.1);
}

.theme-btn.light {
    background-color: #ffffff;
    color: #000000;
}

.theme-btn.dark {
    background-color: #121212;
    color: #ffffff;
}

.theme-btn.colorful {
    background: linear-gradient(45deg, #ff6b6b, #4ecdc4);
    color: #ffffff;
}

.theme-btn.active {
    transform: scale(1.2);
    box-shadow: 0 0 10px var(--primary-color);
}

/* ===== 布局 ===== */
.container {
    width: 100%;
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

section {
    padding: var(--spacing-lg) 0;
}

/* ===== 排版 ===== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 500;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

h1 {
    font-size: 3.5rem;
    letter-spacing: -0.02em;
}

h2 {
    font-size: 2.5rem;
    letter-spacing: -0.01em;
}

h3 {
    font-size: 1.75rem;
}

p {
    margin-bottom: var(--spacing-md);
}

/* ===== 按钮 ===== */
.btn {
    display: inline-block;
    padding: 0.75rem 2rem;
    background-color: var(--primary-color);
    color: var(--secondary-color);
    border: 1px solid var(--primary-color);
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn:hover {
    background-color: transparent;
    color: var(--primary-color);
    opacity: 1;
}

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

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

/* ===== 头部 ===== */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 1000;
    transition: background-color var(--transition-medium);
    background-color: transparent;
}

header.scrolled {
    background-color: var(--header-bg);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.logo a {
    font-size: 1.2rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

nav ul {
    display: flex;
}

nav ul li {
    margin-left: var(--spacing-md);
}

nav ul li a {
    font-size: 0.9rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    position: relative;
}

nav ul li a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--primary-color);
    transition: width var(--transition-medium);
}

nav ul li a:hover::after,
nav ul li a.active::after {
    width: 100%;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 20px;
    cursor: pointer;
}

.menu-toggle span {
    width: 100%;
    height: 2px;
    background-color: var(--primary-color);
    transition: all var(--transition-medium);
}

/* ===== 英雄区域 ===== */
.hero {
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 0 var(--spacing-lg);
    position: relative;
    background-color: var(--overlay-color);
    background-image: var(--hero-bg);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.4);
    z-index: 1;
}

.hero-content {
    max-width: 800px;
    position: relative;
    z-index: 2;
    color: #ffffff;
}

.hero h1 {
    margin-bottom: var(--spacing-md);
    color: #ffffff;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.hero p {
    color: #ffffff;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
    margin-bottom: var(--spacing-md);
}

.discover-btn {
    margin-top: var(--spacing-md);
    font-size: 0.9rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    position: relative;
    color: #ffffff;
}

.discover-btn::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 1px;
    background-color: #ffffff;
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-lg);
    animation: bounce 2s infinite;
    z-index: 2;
    color: #ffffff;
}

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

/* ===== 精选作品 ===== */
.selected-works {
    padding: var(--spacing-xl) var(--spacing-lg);
    text-align: center;
    background-color: var(--overlay-color);
}

.section-description {
    max-width: 600px;
    margin: 0 auto var(--spacing-lg);
}

.works-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.work-item {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16/9;
}

.work-image {
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    transition: transform var(--transition-slow);
}

.work-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: var(--spacing-md);
    background: linear-gradient(to top, rgba(0,0,0,0.7), transparent);
    color: var(--secondary-color);
    text-align: left;
    opacity: 0;
    transform: translateY(20px);
    transition: all var(--transition-medium);
}

.work-item:hover .work-image {
    transform: scale(1.05);
}

.work-item:hover .work-overlay {
    opacity: 1;
    transform: translateY(0);
}

.work-overlay h3 {
    margin-bottom: var(--spacing-xs);
}

.work-overlay p {
    font-size: 0.9rem;
    margin-bottom: 0;
}

.discover-more {
    margin-top: var(--spacing-lg);
}

/* ===== 精选文章 ===== */
.featured-insights {
    padding: var(--spacing-xl) var(--spacing-lg);
    background-color: var(--accent-color);
    text-align: center;
}

.insights-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.insight-item {
    background-color: var(--card-bg);
    overflow: hidden;
    display: block;
    box-shadow: var(--card-shadow);
}

.insight-image {
    width: 100%;
    height: 250px;
    background-size: cover;
    background-position: center;
    transition: transform var(--transition-slow);
}

.insight-item:hover .insight-image {
    transform: scale(1.05);
}

.insight-content {
    padding: var(--spacing-md);
    text-align: left;
}

.insight-content h3 {
    margin-bottom: var(--spacing-xs);
    transition: color var(--transition-fast);
}

.insight-content p {
    font-size: 0.9rem;
    color: var(--dark-gray);
    margin-bottom: var(--spacing-sm);
}

.read-more {
    font-size: 0.9rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    position: relative;
    display: inline-block;
}

.read-more::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--primary-color);
    transition: width var(--transition-medium);
}

.insight-item:hover .read-more::after {
    width: 100%;
}

/* ===== 联系CTA ===== */
.contact-cta {
    padding: var(--spacing-xl) var(--spacing-lg);
    text-align: center;
    background-color: var(--primary-color);
    color: var(--secondary-color);
}

.contact-cta h2 {
    margin-bottom: var(--spacing-md);
}

.contact-cta .btn {
    background-color: var(--secondary-color);
    color: var(--primary-color);
    border-color: var(--secondary-color);
}

.contact-cta .btn:hover {
    background-color: transparent;
    color: var(--secondary-color);
}

/* ===== 页脚 ===== */
footer {
    padding: var(--spacing-lg) var(--spacing-lg) var(--spacing-md);
    background-color: var(--light-gray);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.footer-logo a {
    font-size: 1.2rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

.footer-contact h3,
.footer-social h3 {
    font-size: 1rem;
    margin-bottom: var(--spacing-sm);
}

.footer-contact p {
    margin-bottom: var(--spacing-xs);
    font-size: 0.9rem;
}

.social-links {
    display: flex;
    gap: var(--spacing-sm);
}

.social-link {
    display: flex;
    align-items: center;
}

.social-link svg {
    margin-right: var(--spacing-xs);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--medium-gray);
    font-size: 0.8rem;
}

.footer-links {
    display: flex;
    gap: var(--spacing-md);
}

/* ===== 页面头部 ===== */
.page-header {
    padding: 150px var(--spacing-lg) var(--spacing-lg);
    text-align: center;
    background-color: var(--overlay-color);
}

/* ===== 摄影作品页面 ===== */
.filter-bar {
    padding: 0 var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    background-color: var(--overlay-color);
}

.filters {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.filters a {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    position: relative;
}

.filters a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--primary-color);
    transition: width var(--transition-medium);
}

.filters a:hover::after,
.filters a.active::after {
    width: 100%;
}

.gallery {
    padding: 0 var(--spacing-lg);
    background-color: var(--overlay-color);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

.gallery-item {
    position: relative;
    overflow: hidden;
    aspect-ratio: 1/1;
    cursor: pointer;
    box-shadow: var(--card-shadow);
}

.gallery-image {
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    transition: transform var(--transition-slow);
}

.gallery-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: var(--spacing-md);
    background: linear-gradient(to top, rgba(0,0,0,0.7), transparent);
    color: var(--secondary-color);
    opacity: 0;
    transform: translateY(20px);
    transition: all var(--transition-medium);
}

.gallery-item:hover .gallery-image {
    transform: scale(1.05);
}

.gallery-item:hover .gallery-overlay {
    opacity: 1;
    transform: translateY(0);
}

/* Lightbox */
.lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.9);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 2000;
}

.lightbox.active {
    display: flex;
}

.lightbox-container {
    position: relative;
    max-width: 90%;
    max-height: 90%;
}

.lightbox-content img {
    max-width: 100%;
    max-height: 90vh;
}

.lightbox-close,
.lightbox-prev,
.lightbox-next {
    position: absolute;
    background: none;
    border: none;
    color: var(--secondary-color);
    font-size: 2rem;
    cursor: pointer;
}

.lightbox-close {
    top: 20px;
    right: 20px;
}

.lightbox-prev {
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
}

.lightbox-next {
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
}

/* ===== 文章页面 ===== */
.articles-grid {
    padding: 0 var(--spacing-lg);
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
    background-color: var(--overlay-color);
}

.article-card {
    background-color: var(--card-bg);
    box-shadow: var(--card-shadow);
    overflow: hidden;
}

.article-link {
    display: block;
}

.article-image {
    width: 100%;
    height: 250px;
    background-size: cover;
    background-position: center;
    transition: transform var(--transition-slow);
}

.article-content {
    padding: var(--spacing-md);
}

.article-meta {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--spacing-sm);
    font-size: 0.8rem;
    color: var(--dark-gray);
}

.article-card h2 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    transition: color var(--transition-fast);
}

.article-excerpt {
    font-size: 0.9rem;
    color: var(--dark-gray);
    margin-bottom: var(--spacing-md);
}

.article-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.article-platform {
    display: flex;
    align-items: center;
    font-size: 0.8rem;
    color: var(--dark-gray);
}

.article-platform svg {
    margin-right: 5px;
}

.article-card:hover .article-image {
    transform: scale(1.05);
}

.pagination {
    display: flex;
    justify-content: center;
    margin-top: var(--spacing-lg);
    gap: var(--spacing-sm);
    background-color: var(--overlay-color);
    padding: var(--spacing-md) 0;
}

.pagination a, .pagination span {
    display: inline-block;
    padding: 0.5rem 1rem;
    border: 1px solid var(--medium-gray);
    transition: all var(--transition-fast);
}

.pagination a.active {
    background-color: var(--primary-color);
    color: var(--secondary-color);
    border-color: var(--primary-color);
}

.pagination a:hover:not(.active) {
    background-color: var(--light-gray);
}

.newsletter {
    padding: var(--spacing-xl) var(--spacing-lg);
    background-color: var(--accent-color);
    text-align: center;
}

.newsletter-container {
    max-width: 600px;
    margin: 0 auto;
}

.newsletter h2 {
    margin-bottom: var(--spacing-sm);
}

.newsletter p {
    margin-bottom: var(--spacing-md);
}

.newsletter-form {
    display: flex;
    gap: var(--spacing-sm);
}

.newsletter-form input {
    flex: 1;
    padding: 0.75rem 1rem;
    border: 1px solid var(--medium-gray);
    font-size: 1rem;
    background-color: var(--card-bg);
    color: var(--text-color);
}

/* ===== 简历页面 ===== */
.resume-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 150px var(--spacing-lg) var(--spacing-lg);
    background-color: var(--overlay-color);
}

.resume-actions {
    margin-top: var(--spacing-md);
}

.resume-content {
    margin-top: var(--spacing-lg);
}

.resume-section {
    margin-bottom: var(--spacing-lg);
}

.resume-text {
    max-width: 800px;
}

.resume-item {
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--medium-gray);
}

.resume-item:last-child {
    border-bottom: none;
}

.resume-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xs);
}

.resume-date {
    font-size: 0.9rem;
    color: var(--dark-gray);
}

.resume-company {
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
}

.resume-list {
    list-style: disc;
    padding-left: var(--spacing-md);
}

.resume-list li {
    margin-bottom: var(--spacing-xs);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.skill-category h3 {
    margin-bottom: var(--spacing-md);
}

.skill-item {
    margin-bottom: var(--spacing-sm);
}

.skill-name {
    display: block;
    margin-bottom: 5px;
}

.skill-bar {
    height: 5px;
    background-color: var(--medium-gray);
    border-radius: 5px;
    overflow: hidden;
}

.skill-level {
    height: 100%;
    background-color: var(--primary-color);
}

.languages-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

.language-item {
    padding: var(--spacing-md);
    background-color: var(--light-gray);
    text-align: center;
}

.language-name {
    display: block;
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
}

.language-level {
    font-size: 0.9rem;
    color: var(--dark-gray);
}

/* ===== 联系页面 ===== */
.contact-section {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
    background-color: var(--overlay-color);
}

.contact-container {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-lg);
}

.contact-info {
    background-color: var(--light-gray);
    padding: var(--spacing-lg);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: var(--spacing-md);
}

.contact-icon {
    margin-right: var(--spacing-sm);
    color: var(--primary-color);
}

.contact-text h3 {
    font-size: 1rem;
    margin-bottom: var(--spacing-xs);
}

.contact-text p {
    font-size: 0.9rem;
    margin-bottom: 0;
}

.contact-social {
    margin-top: var(--spacing-lg);
}

.contact-form-container {
    padding: var(--spacing-lg);
    background-color: var(--card-bg);
    box-shadow: var(--card-shadow);
}

.contact-form-container h2 {
    margin-bottom: var(--spacing-md);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-size: 0.9rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--medium-gray);
    font-size: 1rem;
    font-family: var(--font-sans);
    background-color: var(--card-bg);
    color: var(--text-color);
}

.form-group textarea {
    resize: vertical;
}

.map-section {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
    background-color: var(--overlay-color);
}

.map-container {
    width: 100%;
    height: 400px;
    position: relative;
}

.map-placeholder {
    width: 100%;
    height: 100%;
    background-color: var(--light-gray);
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.map-overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: var(--overlay-color);
    padding: var(--spacing-md);
    text-align: center;
}

.map-overlay h3 {
    margin-bottom: var(--spacing-xs);
}

.map-overlay p {
    margin-bottom: 0;
}