/* ========================================
   CSS Variables - Easy to customize
   ======================================== */
:root {
    /* Main Colors - Black, White, Gray */
    --color-black: #0a0a0a;
    --color-dark: #1a1a1a;
    --color-gray-dark: #2a2a2a;
    --color-gray: #4a4a4a;
    --color-gray-light: #8a8a8a;
    --color-light: #e0e0e0;
    --color-white: #f5f5f5;
    
    /* Accent - Cool Gray-Green */
    --color-accent: #6b8f8f;
    --color-accent-light: #8fb3b3;
    --color-accent-dark: #4a6b6b;
    
    /* Typography */
    --font-primary: 'Helvetica Neue', Arial, sans-serif;
    --font-size-base: 16px;
    --line-height-base: 1.7;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
}

/* ========================================
   Reset & Base Styles
   ======================================== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background-color: var(--color-black);
    color: var(--color-light);
    line-height: var(--line-height-base);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

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

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

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-sm) var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 0.3em;
    color: var(--color-white);
}

.portraitPhoto{
	padding-right: 30;
	width: 133px;
    height: 150px;
    background-color: #808080; /* 灰色 */
    margin-left: 30px;
	margin-right: 30px;
    /* 以下是确保并排布局的样式 */
    display: inline-block;
    vertical-align: top; /* 或 middle，根据需求调整 */
}

.logo:hover {
    color: var(--color-accent-light);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
}

.nav-link {
    font-size: 0.875rem;
    font-weight: 400;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-gray-light);
    padding: var(--spacing-xs) 0;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--color-accent);
    transition: width var(--transition-normal);
}

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

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

/* Hamburger Menu */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 5px;
}

.hamburger span {
    width: 25px;
    height: 2px;
    background-color: var(--color-white);
    transition: var(--transition-fast);
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: calc(80px + var(--spacing-xl)) var(--spacing-md) var(--spacing-xl);
    min-height: 100vh;
}

.hero-content {
    max-width: 800px;
    text-align: center;
}

.hero-title {
    font-size: clamp(2.5rem, 8vw, 4.5rem);
    font-weight: 300;
    letter-spacing: 0.1em;
    line-height: 1.2;
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
}

.hero-title .accent {
    color: var(--color-accent);
    font-weight: 100;
}

.divider {
    width: 60px;
    height: 1px;
    background-color: var(--color-accent);
    margin: var(--spacing-md) auto;
}

.hero-description {
    font-size: 1.125rem;
    font-weight: 300;
    color: var(--color-gray-light);
    margin-bottom: var(--spacing-sm);
    text-align: left;
}

.hero-description:last-of-type {
    margin-bottom: 0;
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background-color: var(--color-dark);
    border-top: 1px solid var(--color-gray-dark);
    padding: var(--spacing-lg) var(--spacing-md);
}

.footer-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.footer-title {
    font-size: 1.5rem;
    font-weight: 300;
    letter-spacing: 0.15em;
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
}

.contact-info {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.contact-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-gray-dark);
    transition: all var(--transition-normal);
}

.contact-link:hover {
    border-color: var(--color-accent);
    background-color: rgba(107, 143, 143, 0.1);
}

.personal-info{
	max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-sm) var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: left;
	text-align:left;
}

.contact-label {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: var(--spacing-xs);
}

.contact-value {
    font-size: 0.875rem;
    color: var(--color-gray-light);
}

.contact-link:hover .contact-value {
    color: var(--color-white);
}

.copyright {
    font-size: 0.75rem;
    color: var(--color-gray);
    letter-spacing: 0.1em;
}

/* ========================================
   Gallery Page Styles (For Future Use)
   ======================================== */
.page-header {
    padding: calc(20px + var(--spacing-lg)) var(--spacing-md) var(--spacing-lg);
	padding-bottom: 20px;
    text-align: center;
    border-bottom: 1px solid var(--color-gray-dark);
	display: flex;
    align-items: left; /* 垂直居中 */
    /* 或者使用 justify-content: space-between; 来左右分布 */
}

.page-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 300;
    letter-spacing: 0.15em;
    color: var(--color-white);
}

/* Gallery Grid - Easy to add images */
.gallery {
    padding: var(--spacing-lg) var(--spacing-md);
    max-width: 1400px;
    margin: 0 auto;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.gallery-item {
    position: relative;
    aspect-ratio: 4/3;
    overflow: hidden;
    background-color: var(--color-gray-dark);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

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

.gallery-item-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--spacing-sm);
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.gallery-item:hover .gallery-item-overlay {
    opacity: 1;
}

.gallery-item-title {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-white);
}

.gallery-item-category {
    font-size: 0.75rem;
    color: var(--color-accent-light);
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        background-color: var(--color-dark);
        flex-direction: column;
        align-items: center;
        padding: var(--spacing-md);
        gap: var(--spacing-sm);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .hamburger {
        display: flex;
    }

    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .hero {
        padding-top: calc(60px + var(--spacing-lg));
    }

    .hero-description {
        text-align: center;
    }

    .contact-info {
        flex-direction: column;
        align-items: center;
    }

    .contact-link {
        width: 100%;
        max-width: 300px;
    }

    .gallery-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
}

@media (max-width: 480px) {
    .hero-title {
        letter-spacing: 0.05em;
    }

    .gallery-grid {
        grid-template-columns: 1fr;
    }
}