/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Zoom-style Blue + Dark Theme */
    --primary-color: #ffffff;
    --text-color: #ffffff;
    --bg-color: #1a1f3a;
    --bg-gradient-start: #1a1f3a;
    --bg-gradient-end: #2d3561;
    --zoom-blue: #2d8cff;
    --zoom-blue-bright: #0d72ea;
    --zoom-blue-dark: #1a5490;
    --card-bg: #252b4a;
    --card-bg-hover: #2d3561;
    --border-color: rgba(255, 255, 255, 0.1);
    --text-secondary: #b8c5d6;
    --border-radius: 16px;
    --spacing: 20px;
    --max-width: 1200px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-color);
    background: #f5f7fa;
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing);
    width: 100%;
}

/* Header Styles */
.header {
    padding: var(--spacing) 0;
    border-bottom: 1px solid var(--border-color);
    background-color: var(--bg-gradient-start);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing);
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-color);
    transition: opacity 0.3s ease;
    cursor: pointer;
}

.brand:hover {
    opacity: 0.8;
}

.brand-icon {
    font-size: 1.8rem;
}

.nav {
    display: flex;
    gap: 30px;
    flex-wrap: wrap;
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: var(--zoom-blue);
}

.nav-link.active {
    color: var(--primary-color);
    font-weight: 600;
}

.social-icons {
    display: flex;
    gap: 15px;
    align-items: center;
}

.social-icon {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.social-icon:hover {
    color: var(--zoom-blue);
}

.social-icon svg {
    width: 24px;
    height: 24px;
}

/* Main Content */
.main-content {
    flex: 1;
    padding: 40px 0;
    background-color: #f5f7fa;
    color: #1a1f3a;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 40px;
    color: #1a1f3a;
    font-weight: 700;
}

/* Gallery Navigation */
.gallery-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background-color: rgba(45, 140, 255, 0.2);
    border: 1px solid var(--zoom-blue);
    border-radius: 50%;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 10;
    backdrop-filter: blur(10px);
}

.gallery-nav:hover {
    background-color: var(--zoom-blue);
    transform: translateY(-50%) scale(1.1);
}

.gallery-nav.prev {
    left: calc(50vw - 600px);
    z-index: 20;
}

.gallery-nav.next {
    right: calc(50vw - 600px);
    z-index: 20;
}

@media (max-width: 1200px) {
    .gallery-nav.prev {
        left: 20px;
    }
    
    .gallery-nav.next {
        right: 20px;
    }
}

.gallery-nav svg {
    width: 24px;
    height: 24px;
    stroke: var(--primary-color);
}

.gallery-nav:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.gallery-nav:disabled:hover {
    transform: translateY(-50%);
    background-color: rgba(45, 140, 255, 0.2);
}

/* Gallery Indicators */
.gallery-indicators {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 30px;
}

.gallery-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: all 0.3s ease;
}

.gallery-indicator.active {
    background-color: var(--zoom-blue);
    width: 24px;
    border-radius: 4px;
}

/* Projects Section */
.projects-section {
    padding: 40px 0 20px;
    position: relative;
}

.projects-gallery-section {
    width: 100vw;
    padding: 40px 0 80px;
    position: relative;
    overflow: visible;
    margin-left: calc(-50vw + 50%);
    background-color: #f5f7fa;
}

.projects-gallery-wrapper {
    position: relative;
    width: 100%;
    padding: 0;
}

.projects-gallery {
    display: flex;
    gap: 24px;
    overflow-x: auto;
    overflow-y: visible;
    scroll-behavior: smooth;
    scrollbar-width: none; /* Firefox */
    -ms-overflow-style: none; /* IE and Edge */
    padding: 30px 0; /* 增加上下 padding 给阴影留空间 */
    padding-left: calc(50vw - 160px); /* 让第一个卡片一半在外面 (卡片宽度320px的一半) */
    padding-right: calc(50vw - 160px); /* 让最后一个卡片一半在外面 */
    width: 100vw;
    box-sizing: border-box;
}

.projects-gallery::-webkit-scrollbar {
    display: none; /* Chrome, Safari, Opera */
}

.project-card {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 0;
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25), 0 4px 16px rgba(0, 0, 0, 0.15);
    transition: transform 0.3s ease, box-shadow 0.3s ease, background-color 0.3s ease;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    min-width: 320px;
    max-width: 320px;
    flex-shrink: 0;
    border: 1px solid var(--border-color);
    margin: 10px 0; /* 给阴影留出垂直空间 */
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 40px rgba(45, 140, 255, 0.25), 0 8px 20px rgba(45, 140, 255, 0.15);
    background-color: var(--card-bg-hover);
    border-color: var(--zoom-blue);
}

.project-placeholder {
    flex: 0 0 180px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--zoom-blue-dark) 0%, var(--zoom-blue) 100%);
}

.card-mint .project-placeholder {
    background: linear-gradient(135deg, #1a5490 0%, #2d8cff 100%);
}

.card-peach .project-placeholder {
    background: linear-gradient(135deg, #2d3561 0%, #4a5a8f 100%);
}

.card-blue .project-placeholder {
    background: linear-gradient(135deg, #1a5490 0%, #2d8cff 100%);
}

.card-green .project-placeholder {
    background: linear-gradient(135deg, #1a5490 0%, #2d8cff 100%);
}

.color-squares {
    display: flex;
    gap: 8px;
}

.color-squares.vertical {
    flex-direction: column;
}

.color-squares.horizontal {
    flex-direction: row;
}

.color-squares.vertical {
    position: absolute;
    bottom: 20px;
    left: 20px;
}

.color-squares.horizontal {
    position: absolute;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
}

.card-blue .color-squares.vertical {
    position: absolute;
    top: 50%;
    left: 20px;
    transform: translateY(-50%);
}

.card-green .color-squares.vertical {
    position: absolute;
    top: 20px;
    right: 20px;
}

.square {
    width: 20px;
    height: 20px;
    border-radius: 4px;
}

.square.yellow { background-color: #ffd93d; }
.square.light-blue { background-color: #6bcfd8; }
.square.green { background-color: #4ecdc4; }
.square.pink { background-color: #ff9ff3; }
.square.light-green { background-color: #a8e6cf; }
.square.red { background-color: #ff6b6b; }
.square.cyan { background-color: #4ecdc4; }
.square.black { background-color: #2d3436; }
.square.dark-blue { background-color: #0984e3; }
.square.light-orange { background-color: #fdcb6e; }
.square.white { background-color: #ffffff; }
.square.dark-green { background-color: #00b894; }
.square.dark-orange { background-color: #e17055; }

.project-info {
    padding: 20px;
    background-color: transparent;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.project-title {
    font-size: 1.25rem;
    margin-bottom: 8px;
    color: #ffffff;
    font-weight: 600;
    line-height: 1.3;
}

.project-tech {
    color: var(--zoom-blue);
    font-size: 0.85rem;
    margin-bottom: 10px;
    font-weight: 500;
}

.project-description {
    color: #b8c5d6;
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 12px;
    flex: 1;
}

.project-date {
    color: #b8c5d6;
    font-size: 0.8rem;
    font-style: italic;
    margin-top: auto;
    opacity: 0.7;
}

/* About Section */
.about-section {
    padding: 20px 0;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: start;
}

.about-text {
    line-height: 1.8;
}

.bio-text {
    font-size: 1.1rem;
    margin-bottom: 30px;
    color: #4a5568;
}

.subsection-title {
    font-size: 1.5rem;
    margin-top: 30px;
    margin-bottom: 15px;
    color: #1a1f3a;
    font-weight: 600;
}

.skills-list,
.interests-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.skill-tag,
.interest-tag {
    background-color: #ffffff;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    color: #1a1f3a;
    border: 1px solid #e2e8f0;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.about-photo {
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    gap: 20px;
}

.photo-placeholder {
    width: 100%;
    max-width: 400px;
    aspect-ratio: 1;
    background-color: #f0f0f0;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #999;
    font-size: 1.1rem;
}

.about-photo-img {
    width: 100%;
    max-width: 400px;
    aspect-ratio: 1;
    border-radius: var(--border-radius);
    object-fit: cover;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.cv-download-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    width: 100%;
    max-width: 400px;
}

.cv-download-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background-color: var(--zoom-blue);
    color: #ffffff;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(45, 140, 255, 0.3);
    border: none;
    cursor: pointer;
}

.cv-download-btn:hover {
    background-color: var(--zoom-blue-bright);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(45, 140, 255, 0.4);
}

.cv-download-btn:active {
    transform: translateY(0);
}

.cv-download-btn svg {
    width: 20px;
    height: 20px;
    stroke: #ffffff;
}

.cv-updated-date {
    font-size: 0.85rem;
    color: #718096;
    margin: 0;
    text-align: center;
}

/* Contact Section */
.contact-section {
    padding: 20px 0;
}

.contact-content {
    max-width: 600px;
    margin: 0 auto;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.contact-item {
    padding: 25px;
    background-color: #ffffff;
    border-radius: var(--border-radius);
    border: 1px solid #e2e8f0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.contact-label {
    font-size: 1.2rem;
    margin-bottom: 10px;
    color: #1a1f3a;
    font-weight: 600;
}

.contact-link {
    color: var(--zoom-blue);
    text-decoration: none;
    font-size: 1.1rem;
    transition: color 0.3s ease;
}

.contact-link:hover {
    color: var(--zoom-blue-bright);
    text-decoration: underline;
}

/* Footer */
.footer {
    padding: 30px 0;
    border-top: 1px solid #e2e8f0;
    background-color: #ffffff;
    margin-top: auto;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing);
}

.copyright {
    color: #718096;
    font-size: 0.9rem;
}

.footer .social-icon {
    color: #4a5568;
}

.footer .social-icon:hover {
    color: var(--zoom-blue);
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        align-items: flex-start;
    }

    .nav {
        width: 100%;
        justify-content: flex-start;
    }

    .projects-gallery {
        padding-left: calc(50vw - 140px);
        padding-right: calc(50vw - 140px);
    }

    .gallery-nav {
        display: none; /* Hide arrows on mobile */
    }

    .project-card {
        min-width: 280px;
        max-width: 280px;
    }

    .about-content {
        grid-template-columns: 1fr;
    }

    .footer-content {
        flex-direction: column;
        align-items: flex-start;
    }

    .section-title {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .main-content {
        padding: 20px 0;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .project-card {
        min-width: 260px;
        max-width: 260px;
    }

    .projects-gallery {
        gap: 16px;
        padding-left: calc(50vw - 130px);
        padding-right: calc(50vw - 130px);
    }
}