/* Main Styles - 高级深空科技风格 */

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* Section */
.section {
    padding: var(--space-4xl) 0;
    position: relative;
}

/* Section Header */
.section-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.section-tag {
    display: inline-block;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    letter-spacing: 4px;
    color: var(--accent-teal);
    margin-bottom: var(--space-md);
    text-transform: uppercase;
    position: relative;
}

.section-tag::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 1px;
    background: var(--accent-gradient);
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-light);
    color: var(--text-primary);
    margin-bottom: var(--space-md);
    letter-spacing: 4px;
}

.title-underline {
    width: 60px;
    height: 1px;
    background: var(--accent-gradient);
    margin: 0 auto;
    position: relative;
}

.title-underline::after {
    content: '';
    position: absolute;
    top: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 8px;
    height: 5px;
    background: var(--accent-teal);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--accent-teal);
}

/* Glass Card */
.glass-card {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    box-shadow: var(--shadow-card);
    position: relative;
    overflow: hidden;
}

.glass-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(45, 212, 191, 0.03), transparent);
    transition: left 0.8s ease;
}

.glass-card:hover::before {
    left: 100%;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.btn-primary {
    background: transparent;
    border: 1px solid var(--accent-teal);
    color: var(--accent-teal);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--accent-gradient);
    transition: left 0.3s ease;
    z-index: -1;
}

.btn-primary:hover {
    color: var(--bg-primary);
    border-color: transparent;
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover::before {
    left: 0;
}

.btn-secondary {
    background: transparent;
    border: 1px solid var(--border-hover);
    color: var(--text-secondary);
}

.btn-secondary:hover {
    border-color: var(--accent-teal);
    color: var(--accent-teal);
    box-shadow: 0 0 20px rgba(45, 212, 191, 0.1);
}

.btn-large {
    padding: var(--space-lg) var(--space-2xl);
    font-size: var(--font-size-sm);
}

/* Loading Screen */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
}

.loading-content {
    text-align: center;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 1px solid var(--border-color);
    border-top-color: var(--accent-teal);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--space-md);
    position: relative;
}

.loading-spinner::after {
    content: '';
    position: absolute;
    top: -5px;
    left: -5px;
    right: -5px;
    bottom: -5px;
    border: 1px solid transparent;
    border-top-color: var(--accent-cyan);
    border-radius: 50%;
    animation: spin 2s linear infinite reverse;
}

.loading-text {
    color: var(--text-muted);
    font-size: var(--font-size-xs);
    letter-spacing: 4px;
    text-transform: uppercase;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: var(--z-navbar);
    padding: var(--space-lg) 0;
    transition: all var(--transition-normal);
}

.navbar.scrolled {
    background: rgba(5, 5, 5, 0.95);
    backdrop-filter: blur(20px);
    padding: var(--space-md) 0;
    border-bottom: 1px solid var(--border-color);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    position: relative;
}

.nav-logo::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--accent-teal);
    transition: width 0.3s ease;
}

.nav-logo:hover::after {
    width: 100%;
}

.nav-logo img {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    object-fit: cover;
    border: 1px solid var(--border-hover);
    transition: all 0.3s ease;
}

.nav-logo:hover img {
    border-color: var(--accent-teal);
    box-shadow: 0 0 15px rgba(45, 212, 191, 0.3);
}

.logo-text {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
    letter-spacing: 2px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-2xl);
}

.nav-link {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    font-weight: var(--font-weight-semibold);
    position: relative;
    padding: var(--space-sm) var(--space-md);
    letter-spacing: 2px;
    text-transform: uppercase;
    transition: all 0.3s ease;
    border-radius: var(--radius-sm);
}

.nav-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--accent-teal);
    transition: width 0.3s ease;
    border-radius: 2px;
}

.nav-link:hover {
    color: var(--accent-teal);
    background: rgba(45, 212, 191, 0.1);
}

.nav-link:hover::before {
    width: 60%;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.hamburger span {
    width: 24px;
    height: 1px;
    background: var(--text-primary);
    transition: all var(--transition-normal);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding-top: 80px;
    background: transparent;
}

/* Star Field - Global fixed background */
.global-star-field {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
}

.star-field {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

.star {
    position: absolute;
    left: var(--x);
    top: var(--y);
    width: var(--size);
    height: var(--size);
    background: var(--accent-teal);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--accent-teal), 0 0 20px var(--accent-teal);
    animation: starPulse 3s ease-in-out infinite;
    animation-delay: var(--delay);
}

@keyframes starPulse {
    0%, 100% { 
        opacity: 0.3;
        transform: scale(1);
        box-shadow: 0 0 5px var(--accent-teal), 0 0 10px var(--accent-teal);
    }
    50% { 
        opacity: 1;
        transform: scale(1.5);
        box-shadow: 0 0 15px var(--accent-teal), 0 0 30px var(--accent-teal), 0 0 45px var(--accent-teal);
    }
}

/* Hide global stars on mobile for better performance */
@media (max-width: 768px) {
    .global-star-field {
        display: none;
    }
}

/* Floating Orbs */
.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 30%, rgba(45, 212, 191, 0.15) 0%, transparent 40%),
        radial-gradient(circle at 80% 70%, rgba(34, 211, 238, 0.1) 0%, transparent 35%),
        radial-gradient(circle at 60% 20%, rgba(96, 165, 250, 0.08) 0%, transparent 30%),
        radial-gradient(circle at 30% 80%, rgba(45, 212, 191, 0.12) 0%, transparent 45%);
    z-index: 0;
    animation: floatOrbs 15s ease-in-out infinite;
}

@keyframes floatOrbs {
    0%, 100% { 
        transform: translate(0, 0) scale(1);
        opacity: 0.6;
    }
    25% { 
        transform: translate(20px, -20px) scale(1.05);
        opacity: 0.8;
    }
    50% { 
        transform: translate(-10px, 15px) scale(0.95);
        opacity: 0.7;
    }
    75% { 
        transform: translate(-20px, -10px) scale(1.02);
        opacity: 0.9;
    }
}

#particle-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    opacity: 0.6;
    transition: transform 0.3s ease-out;
    will-change: transform;
    pointer-events: none;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(ellipse at center, transparent 0%, rgba(5, 5, 5, 0.5) 50%, var(--bg-primary) 100%);
    z-index: 2;
    transition: transform 0.3s ease-out;
    will-change: transform;
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 3;
    text-align: center;
    max-width: 800px;
    padding: 0 var(--space-lg);
}

.hero-avatar-container {
    position: relative;
    display: inline-block;
    margin-bottom: var(--space-2xl);
}

.avatar-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 180px;
    height: 180px;
    background: var(--accent-teal);
    border-radius: 50%;
    opacity: 0.1;
    filter: blur(40px);
    animation: pulseGlow 3s ease-in-out infinite;
    transition: transform 0.3s ease-out;
    will-change: transform;
}

.hero-avatar {
    width: 140px;
    height: 140px;
    border-radius: 50%;
    object-fit: cover;
    border: 1px solid var(--border-hover);
    box-shadow: var(--shadow-lg);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.hero-avatar:hover {
    border-color: var(--accent-teal);
    box-shadow: 0 0 30px rgba(45, 212, 191, 0.2);
    transform: scale(1.05);
}

.hero-title {
    margin-bottom: var(--space-lg);
}

.title-line {
    font-size: var(--font-size-5xl);
    font-weight: var(--font-weight-light);
    color: var(--text-primary);
    letter-spacing: 8px;
    text-transform: uppercase;
    background: linear-gradient(135deg, #ffffff 0%, #2DD4BF 50%, #ffffff 100%);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientShift 5s ease infinite;
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
    min-height: 2em;
    font-weight: var(--font-weight-light);
    letter-spacing: 2px;
}

.typing-text {
    color: var(--accent-teal);
}

.typing-cursor {
    color: var(--accent-teal);
    animation: blink 1s step-end infinite;
}

.hero-info {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-lg);
    margin-bottom: var(--space-2xl);
    flex-wrap: wrap;
}

.info-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    letter-spacing: 1px;
    padding: var(--space-xs) var(--space-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    transition: all 0.3s ease;
}

.info-item:hover {
    border-color: var(--accent-teal);
    color: var(--accent-teal);
}

.info-item i {
    color: var(--accent-teal);
    font-size: var(--font-size-xs);
}

.info-separator {
    color: var(--border-color);
}

.hero-cta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
    flex-wrap: wrap;
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    color: var(--text-muted);
    font-size: var(--font-size-xs);
    letter-spacing: 2px;
    text-transform: uppercase;
}

.mouse {
    width: 20px;
    height: 32px;
    border: 1px solid var(--border-hover);
    border-radius: var(--radius-full);
    position: relative;
}

.wheel {
    width: 2px;
    height: 6px;
    background: var(--accent-teal);
    border-radius: var(--radius-full);
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    animation: scrollWheel 1.5s ease-in-out infinite;
}

/* About Section */
.about {
    background: rgba(10, 10, 10, 0.9);
    backdrop-filter: blur(10px);
    border-top: 1px solid var(--border-color);
    position: relative;
    z-index: 1;
}

.about-card {
    max-width: 800px;
    margin: 0 auto;
    border-radius: var(--radius-xl);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-card);
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
    margin-bottom: var(--space-2xl);
    padding-bottom: var(--space-2xl);
    border-bottom: 1px solid var(--border-color);
}

.stat-item {
    text-align: center;
    padding: var(--space-lg);
    position: relative;
    transition: all 0.3s ease;
    min-height: 120px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.stat-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 1px;
    background: var(--accent-teal);
    transition: width 0.3s ease;
}

.stat-item:hover::before {
    width: 50%;
}

.stat-item:hover {
    transform: translateY(-5px);
}

.stat-number {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-light);
    color: var(--accent-teal);
    line-height: 1;
    letter-spacing: 2px;
}

.stat-suffix {
    font-size: var(--font-size-md);
    color: var(--accent-cyan);
    margin-left: var(--space-xs);
}

.stat-label {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    margin-top: var(--space-sm);
    letter-spacing: 1px;
    text-transform: uppercase;
}

.about-text {
    text-align: center;
}

.about-description {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--space-xl);
    font-weight: var(--font-weight-light);
}

.about-quote {
    font-size: var(--font-size-md);
    color: var(--text-muted);
    line-height: 1.8;
    position: relative;
    font-style: italic;
}

.quote-icon {
    color: var(--accent-teal);
    font-size: var(--font-size-sm);
    margin-right: var(--space-sm);
    opacity: 0.5;
}

.highlight {
    color: var(--accent-teal);
}

.highlight-text {
    color: var(--accent-teal);
    font-weight: var(--font-weight-semibold);
    position: relative;
}

.highlight-text::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 1px;
    background: var(--accent-teal);
    opacity: 0.5;
}

/* Skills Section */
.skills {
    background: rgba(5, 5, 5, 0.9);
    backdrop-filter: blur(10px);
    border-top: 1px solid var(--border-color);
    position: relative;
    z-index: 1;
}

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

.skill-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    position: relative;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-card);
    overflow: hidden;
}

.skill-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: var(--accent-gradient);
    transform: scaleX(0);
    transition: transform 0.5s ease;
}

.skill-card:hover {
    border-color: var(--border-accent);
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-5px);
}

.skill-card:hover::before {
    transform: scaleX(1);
}

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

.skill-card.featured:hover {
    box-shadow: 0 12px 40px rgba(45, 212, 191, 0.1);
}

.skill-badge {
    position: absolute;
    top: var(--space-lg);
    right: var(--space-lg);
    background: transparent;
    color: var(--accent-teal);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    padding: var(--space-xs) var(--space-sm);
    border: 1px solid var(--accent-teal);
    border-radius: var(--radius-sm);
    letter-spacing: 1px;
}

.skill-icon {
    width: 48px;
    height: 48px;
    background: transparent;
    border: 1px solid var(--border-hover);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
    color: var(--accent-teal);
    margin-bottom: var(--space-lg);
    transition: all 0.3s ease;
}

.skill-card:hover .skill-icon {
    border-color: var(--accent-teal);
    box-shadow: 0 0 15px rgba(45, 212, 191, 0.2);
}

.skill-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
    margin-bottom: var(--space-xl);
    letter-spacing: 1px;
}

/* Software Icons Grid */
.software-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
}

.software-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.software-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(45, 212, 191, 0.05), transparent);
    transition: left 0.5s ease;
}

.software-item:hover::before {
    left: 100%;
}

.software-item:hover {
    border-color: var(--border-accent);
    transform: translateY(-3px);
}

.software-item img {
    width: 36px;
    height: 36px;
    object-fit: contain;
    border-radius: var(--radius-sm);
    transition: transform 0.3s ease;
}

.software-item:hover img {
    transform: scale(1.1);
}

.software-item span {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    letter-spacing: 1px;
}

/* AI Tools Grid */
.ai-tools-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
}

.ai-tool {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.ai-tool::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(45, 212, 191, 0.05), transparent);
    transition: left 0.5s ease;
}

.ai-tool:hover::before {
    left: 100%;
}

.ai-tool:hover {
    border-color: var(--border-accent);
    transform: translateY(-3px);
}

.ai-tool img {
    width: 36px;
    height: 36px;
    object-fit: contain;
    border-radius: var(--radius-sm);
    transition: transform 0.3s ease;
}

.ai-tool:hover img {
    transform: scale(1.1);
}

.ai-tool span {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    letter-spacing: 1px;
}

/* Skill Tags */
.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.tag {
    padding: var(--space-xs) var(--space-md);
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    transition: all var(--transition-normal);
    letter-spacing: 1px;
    position: relative;
    overflow: hidden;
}

.tag::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--accent-gradient);
    transition: left 0.3s ease;
    z-index: -1;
}

.tag:hover {
    border-color: transparent;
    color: var(--bg-primary);
}

.tag:hover::before {
    left: 0;
}

/* Skill List */
.skill-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.list-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

.list-item:hover {
    color: var(--text-primary);
    transform: translateX(5px);
}

.list-item i {
    color: var(--accent-teal);
    font-size: var(--font-size-xs);
    transition: all 0.3s ease;
}

.list-item:hover i {
    transform: scale(1.2);
}

/* Experience Section */
.experience {
    background: rgba(10, 10, 10, 0.9);
    backdrop-filter: blur(10px);
    border-top: 1px solid var(--border-color);
    position: relative;
    z-index: 1;
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding-left: 30px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 1px;
    background: linear-gradient(180deg, var(--accent-teal) 0%, transparent 100%);
}

.timeline-item {
    position: relative;
    padding-bottom: var(--space-3xl);
}

.timeline-marker {
    position: absolute;
    left: -35px;
    top: 0;
    width: 10px;
    height: 10px;
    background: var(--accent-teal);
    border-radius: 50%;
    border: 2px solid var(--bg-secondary);
    box-shadow: 0 0 10px var(--accent-teal);
    transition: all 0.3s ease;
}

.timeline-item:hover .timeline-marker {
    transform: scale(1.3);
    box-shadow: 0 0 20px var(--accent-teal);
}

.timeline-marker.current {
    background: var(--text-primary);
    box-shadow: 0 0 10px var(--text-primary);
    animation: markerPulse 2s ease-in-out infinite;
}

.timeline-content {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-card);
    position: relative;
    overflow: hidden;
}

.timeline-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 2px;
    height: 100%;
    background: var(--accent-gradient);
    transform: scaleY(0);
    transition: transform 0.5s ease;
}

.timeline-content:hover {
    border-color: var(--border-accent);
    transform: translateX(5px);
}

.timeline-content:hover::before {
    transform: scaleY(1);
}

.timeline-header {
    display: flex;
    align-items: flex-start;
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-lg);
    border-bottom: 1px solid var(--border-color);
}

.company-logo {
    width: 48px;
    height: 48px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-md);
    color: var(--accent-teal);
    flex-shrink: 0;
    transition: all 0.3s ease;
}

.timeline-content:hover .company-logo {
    border-color: var(--accent-teal);
    box-shadow: 0 0 15px rgba(45, 212, 191, 0.2);
}

.timeline-title-group {
    flex: 1;
}

.timeline-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
    letter-spacing: 1px;
}

.timeline-position {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--accent-teal);
    margin-bottom: var(--space-xs);
    letter-spacing: 1px;
}

.timeline-date {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    letter-spacing: 1px;
}

.timeline-date.current {
    color: var(--text-primary);
}

.timeline-body {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.work-section h4 {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: var(--space-md);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    letter-spacing: 1px;
    text-transform: uppercase;
}

.work-section h4 i {
    color: var(--accent-teal);
    font-size: var(--font-size-xs);
}

.work-section ul {
    list-style: none;
    padding-left: 0;
}

.work-section li {
    position: relative;
    padding-left: var(--space-lg);
    margin-bottom: var(--space-sm);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.6;
    transition: all 0.3s ease;
}

.work-section li:hover {
    color: var(--text-primary);
    transform: translateX(5px);
}

.work-section li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    width: 4px;
    height: 4px;
    background: var(--accent-teal);
    border-radius: 50%;
    box-shadow: 0 0 5px var(--accent-teal);
}

.achievement-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
}

.achievement-card {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    text-align: center;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.achievement-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(45, 212, 191, 0.05), transparent);
    transition: left 0.5s ease;
}

.achievement-card:hover::before {
    left: 100%;
}

.achievement-card:hover {
    border-color: var(--accent-teal);
    transform: translateY(-3px);
}

.achievement-number {
    display: block;
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-light);
    color: var(--accent-teal);
    margin-bottom: var(--space-xs);
    letter-spacing: 1px;
}

.achievement-text {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    letter-spacing: 1px;
}

/* Portfolio Section */
.portfolio {
    background: rgba(5, 5, 5, 0.9);
    backdrop-filter: blur(10px);
    border-top: 1px solid var(--border-color);
    position: relative;
    z-index: 1;
}

.portfolio-filters {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-2xl);
    flex-wrap: wrap;
}

.filter-btn {
    padding: var(--space-sm) var(--space-lg);
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-muted);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    transition: all var(--transition-normal);
    letter-spacing: 1px;
    text-transform: uppercase;
    position: relative;
    overflow: hidden;
}

.filter-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--accent-gradient);
    transition: left 0.3s ease;
    z-index: -1;
}

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

.filter-btn:hover::before,
.filter-btn.active::before {
    left: 0;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
}

.portfolio-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-card);
    aspect-ratio: 1/1;
    display: flex;
    flex-direction: column;
    position: relative;
}

.portfolio-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(45, 212, 191, 0) 0%, rgba(45, 212, 191, 0.05) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 1;
    pointer-events: none;
}

.portfolio-item:hover::before {
    opacity: 1;
}

.portfolio-item:hover {
    border-color: var(--border-accent);
    box-shadow: 0 12px 40px rgba(45, 212, 191, 0.1);
    transform: translateY(-5px);
}

.portfolio-video {
    position: relative;
    background: var(--bg-tertiary);
    overflow: hidden;
    flex: 1;
    min-height: 0;
}

.portfolio-video video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.portfolio-item:hover .portfolio-video video {
    transform: scale(1.05);
}

.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-normal);
    z-index: 2;
}

.portfolio-item:hover .video-overlay {
    opacity: 1;
}

.play-btn {
    width: 48px;
    height: 48px;
    background: var(--accent-teal);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-md);
    color: var(--bg-primary);
    transition: all var(--transition-normal);
    transform: scale(0.9);
    box-shadow: 0 0 20px rgba(45, 212, 191, 0.3);
}

.portfolio-item:hover .play-btn {
    transform: scale(1);
}

.play-btn:hover {
    background: var(--accent-teal-light);
    box-shadow: 0 0 30px rgba(45, 212, 191, 0.5);
    transform: scale(1.1);
}

.portfolio-info {
    padding: var(--space-lg);
    border-top: 1px solid var(--border-color);
    position: relative;
    z-index: 2;
    background: var(--bg-card);
}

.portfolio-info h3 {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
    letter-spacing: 1px;
}

.portfolio-info p {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    margin-bottom: var(--space-sm);
}

.portfolio-tags {
    display: flex;
    gap: var(--space-xs);
    flex-wrap: wrap;
}

.portfolio-tags span {
    padding: var(--space-xs) var(--space-sm);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    letter-spacing: 1px;
    transition: all 0.3s ease;
}

.portfolio-tags span:hover {
    border-color: var(--accent-teal);
    color: var(--accent-teal);
}

/* Contact Section */
.contact {
    background: rgba(10, 10, 10, 0.9);
    backdrop-filter: blur(10px);
    border-top: 1px solid var(--border-color);
    position: relative;
    z-index: 1;
}

.contact-content {
    max-width: 900px;
    margin: 0 auto;
}

.contact-info {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: var(--space-lg);
    margin-bottom: var(--space-3xl);
}

.contact-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    display: flex;
    align-items: center;
    gap: var(--space-md);
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-card);
    min-height: 120px;
    position: relative;
    overflow: hidden;
}

.contact-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--accent-gradient);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.contact-card:hover {
    border-color: var(--border-accent);
    transform: translateY(-5px);
}

.contact-card:hover::before {
    transform: scaleX(1);
}

.contact-icon {
    width: 48px;
    height: 48px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-md);
    color: var(--accent-teal);
    flex-shrink: 0;
    transition: all 0.3s ease;
}

.contact-card:hover .contact-icon {
    border-color: var(--accent-teal);
    box-shadow: 0 0 15px rgba(45, 212, 191, 0.2);
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    flex: 1;
}

.contact-label {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    letter-spacing: 1px;
    text-transform: uppercase;
}

.contact-value {
    font-size: var(--font-size-md);
    color: var(--text-primary);
    font-weight: var(--font-weight-light);
    letter-spacing: 1px;
    transition: all 0.3s ease;
    word-break: break-all;
}

.contact-card:hover .contact-value {
    color: var(--accent-teal);
}

.contact-cta {
    text-align: center;
    padding: var(--space-2xl);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-card);
    position: relative;
    overflow: hidden;
}

.contact-cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(45, 212, 191, 0.03), transparent);
    transition: left 0.8s ease;
}

.contact-cta:hover::before {
    left: 100%;
}

.cta-text {
    font-size: var(--font-size-md);
    color: var(--text-muted);
    margin-bottom: var(--space-lg);
    font-weight: var(--font-weight-light);
}

/* Footer */
.footer {
    background: rgba(15, 15, 15, 0.95);
    backdrop-filter: blur(10px);
    border-top: 1px solid var(--border-color);
    padding: var(--space-2xl) 0 var(--space-lg);
    position: relative;
    z-index: 1;
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-xl);
    padding-bottom: var(--space-xl);
    border-bottom: 1px solid var(--border-color);
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.footer-logo img {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    object-fit: cover;
    border: 1px solid var(--border-hover);
    transition: all 0.3s ease;
}

.footer-logo:hover img {
    border-color: var(--accent-teal);
    box-shadow: 0 0 10px rgba(45, 212, 191, 0.2);
}

.logo-text {
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
    letter-spacing: 2px;
}

.footer-tagline {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    margin-top: var(--space-xs);
    letter-spacing: 1px;
}

.footer-social {
    display: flex;
    gap: var(--space-md);
}

.social-link {
    width: 40px;
    height: 40px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.social-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--accent-gradient);
    transition: left 0.3s ease;
    z-index: -1;
}

.social-link:hover {
    border-color: transparent;
    color: var(--bg-primary);
}

.social-link:hover::before {
    left: 0;
}

.footer-bottom {
    text-align: center;
}

.footer-bottom p {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    letter-spacing: 1px;
}

.footer-made {
    margin-top: var(--space-xs);
}

.footer-made i {
    color: var(--accent-teal);
    animation: pulseGlow 2s ease-in-out infinite;
}

/* Back to Top */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    background: transparent;
    border: 1px solid var(--accent-teal);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-md);
    color: var(--accent-teal);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-normal);
    z-index: var(--z-sticky);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--accent-teal);
    color: var(--bg-primary);
    box-shadow: 0 0 20px rgba(45, 212, 191, 0.3);
    transform: translateY(-3px);
}

/* Video Modal */
.video-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: var(--z-modal);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.video-modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(5, 5, 5, 0.95);
}

.modal-content {
    position: relative;
    width: 90%;
    max-width: 1000px;
    max-height: 90vh;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close {
    position: absolute;
    top: -50px;
    right: 0;
    width: 40px;
    height: 40px;
    background: transparent;
    border: 1px solid var(--border-hover);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-md);
    color: var(--text-primary);
    transition: all var(--transition-normal);
    z-index: 2;
}

.modal-close:hover {
    border-color: var(--accent-teal);
    color: var(--accent-teal);
    box-shadow: 0 0 15px rgba(45, 212, 191, 0.2);
}

.modal-content video {
    max-width: 100%;
    max-height: 85vh;
    border-radius: var(--radius-md);
    object-fit: contain;
    box-shadow: 0 0 40px rgba(45, 212, 191, 0.1);
}

/* WeChat Modal */
.wechat-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: var(--z-modal);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.wechat-modal.active {
    opacity: 1;
    visibility: visible;
}

.wechat-content {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--space-3xl);
    text-align: center;
    z-index: 1;
    min-width: 320px;
    box-shadow: var(--shadow-lg);
}

.wechat-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--accent-gradient);
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

.wechat-icon {
    width: 80px;
    height: 80px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-lg);
    font-size: var(--font-size-3xl);
    color: var(--accent-teal);
    box-shadow: 0 0 30px rgba(45, 212, 191, 0.2);
}

.wechat-content h3 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
    letter-spacing: 2px;
}

.wechat-content p {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    margin-bottom: var(--space-lg);
}

.wechat-id {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--accent-teal);
    letter-spacing: 4px;
    padding: var(--space-md) var(--space-xl);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-xl);
    font-family: 'Courier New', monospace;
}

/* Responsive */
@media (max-width: 991px) {
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .achievement-cards {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-info {
        grid-template-columns: 1fr;
    }
    
    .portfolio-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        background: rgba(5, 5, 5, 0.98);
        flex-direction: column;
        padding: var(--space-xl);
        gap: var(--space-md);
        transform: translateY(-150%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
        border-bottom: 1px solid var(--border-color);
    }
    
    .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);
    }
    
    .title-line {
        font-size: var(--font-size-3xl);
        letter-spacing: 4px;
    }
    
    .hero-info {
        flex-direction: column;
        gap: var(--space-sm);
    }
    
    .info-separator {
        display: none;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .about-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-lg);
    }
    
    .software-grid,
    .ai-tools-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .timeline {
        padding-left: 20px;
    }
    
    .timeline-marker {
        left: -25px;
    }
    
    .timeline-header {
        flex-direction: column;
        gap: var(--space-md);
    }
    
    .achievement-cards {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .portfolio-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        flex-direction: column;
        gap: var(--space-lg);
        text-align: center;
    }
}

@media (max-width: 480px) {
    .about-stats {
        grid-template-columns: 1fr;
    }
    
    .software-grid,
    .ai-tools-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .achievement-cards {
        grid-template-columns: 1fr;
    }
    
    .contact-card {
        flex-direction: column;
        text-align: center;
    }
    
    .portfolio-grid {
        grid-template-columns: 1fr;
    }
}

    
/* Touch Device Optimizations */
@media (hover: none) and (pointer: coarse) {
    .glass-card:hover {
        transform: none;
    }
    
    .portfolio-item:hover {
        transform: none;
    }
    
    .portfolio-item:hover .portfolio-video {
        transform: none;
    }
    
    .nav-link:hover {
        background: transparent;
    }
    
    .btn-primary:hover,
    .btn-secondary:hover {
        transform: none;
    }
    
    /* Improve touch targets */
    .nav-link,
    .btn-primary,
    .btn-secondary,
    .portfolio-filter-btn,
    .modal-close {
        min-height: 44px;
        min-width: 44px;
    }
}

/* Mobile Navigation Improvements */
@media (max-width: 768px) {
    /* Larger touch targets for mobile nav */
    .nav-link {
        padding: var(--space-md) var(--space-lg);
        font-size: var(--font-size-sm);
        display: block;
        text-align: center;
    }
    
    /* Adjust section padding for mobile */
    .section {
        padding: var(--space-3xl) 0;
    }
    
    /* Better container padding on small screens */
    .container {
        padding: 0 var(--space-md);
    }
    
    /* Adjust hero for mobile */
    .hero {
        min-height: auto;
        padding: 120px 0 80px;
    }
    
    .hero-avatar {
        width: 120px;
        height: 120px;
    }
    
    .avatar-glow {
        width: 150px;
        height: 150px;
    }
    
    /* Section titles smaller on mobile */
    .section-title {
        font-size: var(--font-size-3xl);
        letter-spacing: 2px;
    }
    
    .title-line {
        font-size: var(--font-size-2xl);
        letter-spacing: 3px;
    }
    
    /* Better timeline on mobile */
    .timeline {
        padding-left: 15px;
    }
    
    .timeline::before {
        left: 0;
    }
    
    .timeline-marker {
        left: -19px;
        width: 10px;
        height: 10px;
    }
    
    /* Better stats on mobile */
    .stat-number {
        font-size: var(--font-size-3xl);
    }
    
    .stat-suffix {
        font-size: var(--font-size-lg);
    }
    
    .stat-label {
        font-size: var(--font-size-xs);
    }
    
    /* Better portfolio on mobile */
    .portfolio-item {
        aspect-ratio: 9/16;
    }
    
    .portfolio-video {
        object-fit: cover;
    }
    
    /* Better contact cards on mobile */
    .contact-info {
        gap: var(--space-lg);
    }
    
    .contact-icon {
        width: 50px;
        height: 50px;
    }
    
    .contact-icon img {
        width: 24px;
        height: 24px;
    }
    
    /* WeChat modal adjustments */
    .modal-content {
        margin: 20px;
        max-height: calc(100vh - 40px);
    }
    
    .wechat-id {
        font-size: var(--font-size-xl);
        padding: var(--space-md) var(--space-lg);
    }
}

/* Small mobile devices */
@media (max-width: 360px) {
    .title-line {
        font-size: var(--font-size-xl);
        letter-spacing: 2px;
    }
    
    .hero-subtitle {
        font-size: var(--font-size-base);
    }
    
    .section-title {
        font-size: var(--font-size-2xl);
    }
    
    .software-grid,
    .ai-tools-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-md);
    }
    
    .software-icon img,
    .ai-icon img {
        width: 36px;
        height: 36px;
    }
}

/* Landscape mode on mobile */
@media (max-height: 500px) and (orientation: landscape) {
    .hero {
        min-height: auto;
        padding: 100px 0 60px;
    }
    
    .hero-avatar {
        width: 80px;
        height: 80px;
    }
    
    .avatar-glow {
        width: 100px;
        height: 100px;
    }
    
    .modal-video {
        max-height: 80vh;
    }
}

/* Ensure proper z-index stacking */
.global-star-field {
    z-index: 0;
}

.navbar {
    z-index: 100;
}

section {
    position: relative;
    z-index: 1;
}

.modal {
    z-index: 1000;
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .star {
        animation: none;
        opacity: 0.5;
    }
}