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

/* 스크린 리더 전용 클래스 */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

:root {
    --primary-color: #00d4ff;
    --secondary-color: #7c3aed;
    --accent-color: #f59e0b;
    --background: #0a0a0a;
    --surface: #111111;
    --text-primary: #ffffff;
    --text-secondary: #a1a1aa;
    --border: #27272a;
    --gradient-1: linear-gradient(135deg, #00d4ff 0%, #7c3aed 100%);
    --gradient-2: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
    --gradient-3: linear-gradient(135deg, #10b981 0%, #3b82f6 100%);
    --shadow-glow: 0 0 40px rgba(0, 212, 255, 0.3);
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
}

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

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--background);
    overflow-x: hidden;
    position: relative;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* 배경 효과 */
.background-effects {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.3;
    animation: float 20s ease-in-out infinite;
}

.orb-1 {
    width: 400px;
    height: 400px;
    background: var(--gradient-1);
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.orb-2 {
    width: 300px;
    height: 300px;
    background: var(--gradient-2);
    top: 60%;
    right: 10%;
    animation-delay: 7s;
}

.orb-3 {
    width: 250px;
    height: 250px;
    background: var(--gradient-3);
    bottom: 20%;
    left: 50%;
    animation-delay: 14s;
}

.noise-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
    opacity: 0.02;
    pointer-events: none;
}

/* 네비게이션 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    position: relative;
    width: 32px;
    height: 32px;
}

.logo-dot {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 8px;
    height: 8px;
    background: var(--primary-color);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

.logo-line {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 24px;
    height: 2px;
    background: var(--gradient-1);
    border-radius: 1px;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 3rem;
}

.nav-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none;
    color: var(--text-secondary);
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    position: relative;
}

.nav-number {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 0.25rem;
}

.nav-text {
    font-size: 0.875rem;
    font-weight: 500;
}

.nav-link:hover {
    color: var(--text-primary);
    transform: translateY(-2px);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--gradient-1);
    transition: width 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.toggle-line {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all 0.3s ease;
}

/* 메인 섹션 */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: 80px;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: 50px;
    margin-bottom: 2rem;
    backdrop-filter: blur(10px);
}

.badge-text {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--primary-color);
}

.badge-dot {
    width: 6px;
    height: 6px;
    background: var(--primary-color);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.title-line {
    display: block;
    opacity: 0;
    transform: translateY(40px);
    animation: fadeInUp 1.2s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
}

.title-line:nth-child(2) {
    animation-delay: 0.2s;
}

.title-line:nth-child(3) {
    animation-delay: 0.4s;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    opacity: 0;
    transform: translateY(40px);
    animation: fadeInUp 1.2s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards 0.6s;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
    opacity: 0;
    transform: translateY(40px);
    animation: fadeInUp 1.2s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards 0.8s;
}

.btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border: none;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.875rem;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--gradient-1);
    color: var(--text-primary);
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
    transform: translateY(-4px);
    box-shadow: 0 0 60px rgba(0, 212, 255, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border: 1px solid var(--border);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-4px);
}

.btn-icon {
    transition: transform 0.3s ease;
}

.btn:hover .btn-icon {
    transform: translateX(4px);
}

.hero-stats {
    display: flex;
    gap: 2rem;
    opacity: 0;
    transform: translateY(40px);
    animation: fadeInUp 1.2s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards 1s;
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 0.25rem;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* 3D 회전 큐브 */
.hero-visual {
    position: relative;
    height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.rotating-cube {
    position: relative;
    width: 200px;
    height: 200px;
    perspective: 1000px;
}

.cube {
    width: 100%;
    height: 100%;
    position: relative;
    transform-style: preserve-3d;
    animation: rotateCube 20s linear infinite;
}

.cube-face {
    position: absolute;
    width: 200px;
    height: 200px;
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid rgba(0, 212, 255, 0.3);
    border-radius: 16px;
    backdrop-filter: blur(20px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    transition: all 0.3s ease;
}

.cube-face:hover {
    background: rgba(0, 212, 255, 0.1);
    border-color: var(--primary-color);
    transform: scale(1.05);
}

.cube-face i {
    font-size: 2.5rem;
    color: var(--primary-color);
}

.cube-face span {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.cube-face.front {
    transform: translateZ(100px);
}

.cube-face.back {
    transform: translateZ(-100px) rotateY(180deg);
}

.cube-face.right {
    transform: translateX(100px) rotateY(90deg);
}

.cube-face.left {
    transform: translateX(-100px) rotateY(-90deg);
}

.cube-face.top {
    transform: translateY(-100px) rotateX(90deg);
}

.cube-face.bottom {
    transform: translateY(100px) rotateX(-90deg);
}

/* 플로팅 파티클 */
.floating-particles {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
}

.particle {
    position: absolute;
    width: 8px;
    height: 8px;
    background: var(--primary-color);
    border-radius: 50%;
    animation: floatParticle 6s ease-in-out infinite;
    opacity: 0.6;
}

.particle:nth-child(1) {
    top: 20%;
    left: 20%;
    animation-delay: 0s;
}

.particle:nth-child(2) {
    top: 60%;
    left: 80%;
    animation-delay: 1s;
}

.particle:nth-child(3) {
    top: 40%;
    left: 70%;
    animation-delay: 2s;
}

.particle:nth-child(4) {
    top: 80%;
    left: 30%;
    animation-delay: 3s;
}

.particle:nth-child(5) {
    top: 30%;
    left: 60%;
    animation-delay: 4s;
}

/* 스크롤 인디케이터 */
.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    opacity: 0;
    animation: fadeIn 1.5s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards 1.5s;
}

.scroll-line {
    width: 2px;
    height: 40px;
    background: var(--gradient-1);
    border-radius: 1px;
    animation: scrollBounce 2s ease-in-out infinite;
}

.scroll-text {
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-weight: 500;
    letter-spacing: 0.1em;
}

/* 섹션 공통 스타일 */
section {
    padding: 120px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-number {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 1rem;
    letter-spacing: 0.2em;
}

.section-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* 소개 섹션 */
.about {
    background: var(--surface);
    position: relative;
}

.about::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, transparent 0%, rgba(0, 212, 255, 0.02) 100%);
    pointer-events: none;
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: start;
}

.about-visual {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    align-items: center;
}

.about-profile {
    display: flex;
    justify-content: center;
    align-items: center;
}

.profile-image {
    position: relative;
    width: 250px;
    height: 250px;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-card);
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.profile-image:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 20px 60px rgba(0, 212, 255, 0.3);
}

.profile-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: all 0.4s ease;
}

.profile-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    padding: 2rem 1.5rem 1.5rem;
    transform: translateY(100%);
    transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.profile-image:hover .profile-overlay {
    transform: translateY(0);
}

.profile-info h3 {
    color: var(--text-primary);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.profile-info p {
    color: var(--primary-color);
    font-size: 1rem;
    font-weight: 500;
}

.about-text {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.text-block h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.text-block p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.about-visual {
    display: flex;
    justify-content: center;
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    max-width: 300px;
}

.tech-item {
    width: 70px;
    height: 70px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: var(--primary-color);
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    position: relative;
    overflow: hidden;
}

.tech-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.2), transparent);
    transition: left 0.6s;
}

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

.tech-item:hover {
    background: rgba(0, 212, 255, 0.1);
    transform: translateY(-8px) scale(1.1);
    box-shadow: var(--shadow-glow);
}

/* 프로젝트 섹션 */
.work {
    background: var(--background);
}

.work-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.work-item {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 20px;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    position: relative;
}

.work-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-card);
    border-color: var(--primary-color);
}

.work-image {
    position: relative;
    height: 250px;
    background: var(--gradient-1);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.work-placeholder {
    font-size: 4rem;
    color: rgba(255, 255, 255, 0.8);
}

.image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.4s ease;
}

.work-item:hover .image-overlay {
    opacity: 1;
}

.work-links {
    display: flex;
    gap: 1rem;
}

.work-link {
    width: 50px;
    height: 50px;
    background: var(--text-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--background);
    text-decoration: none;
    transition: all 0.3s ease;
}

.work-link:hover {
    background: var(--primary-color);
    transform: scale(1.1);
}

.work-content {
    padding: 2rem;
}

.work-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.work-category {
    font-size: 0.875rem;
    color: var(--primary-color);
    font-weight: 600;
}

.work-year {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.work-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.work-description {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.work-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tech-tag {
    background: rgba(0, 212, 255, 0.1);
    color: var(--primary-color);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
    border: 1px solid rgba(0, 212, 255, 0.2);
}

/* 연락처 섹션 */
.contact {
    background: var(--surface);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border);
    border-radius: 16px;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.contact-item:hover {
    background: rgba(0, 212, 255, 0.05);
    border-color: var(--primary-color);
    transform: translateY(-4px);
}

.contact-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    font-size: 1.5rem;
}

.contact-details h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.contact-details p {
    color: var(--text-secondary);
}

.contact-form {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 2.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    border-radius: 12px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    background: rgba(0, 212, 255, 0.05);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-secondary);
}

/* 푸터 */
.footer {
    background: var(--background);
    border-top: 1px solid var(--border);
    padding: 3rem 0 1rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.footer-left {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-left p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-link {
    width: 45px;
    height: 45px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-link:hover {
    background: var(--primary-color);
    color: var(--text-primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
}

.footer-bottom p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* 애니메이션 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
    }
    33% {
        transform: translateY(-20px) rotate(2deg);
    }
    66% {
        transform: translateY(-10px) rotate(-1deg);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.7;
        transform: scale(1.1);
    }
}

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

@keyframes rotateCube {
    0% {
        transform: rotateX(0deg) rotateY(0deg);
    }
    25% {
        transform: rotateX(90deg) rotateY(0deg);
    }
    50% {
        transform: rotateX(90deg) rotateY(90deg);
    }
    75% {
        transform: rotateX(0deg) rotateY(90deg);
    }
    100% {
        transform: rotateX(0deg) rotateY(0deg);
    }
}

@keyframes floatParticle {
    0%, 100% {
        transform: translateY(0px) scale(1);
        opacity: 0.6;
    }
    25% {
        transform: translateY(-20px) scale(1.2);
        opacity: 1;
    }
    50% {
        transform: translateY(-10px) scale(0.8);
        opacity: 0.8;
    }
    75% {
        transform: translateY(-30px) scale(1.1);
        opacity: 0.9;
    }
}

/* 반응형 디자인 */
@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 80px;
        flex-direction: column;
        background: var(--surface);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        border-top: 1px solid var(--border);
        padding: 2rem 0;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .about-visual {
        order: -1;
        gap: 1.5rem;
    }
    
    .profile-image {
        width: 200px;
        height: 200px;
    }
    
    .tech-grid {
        max-width: 250px;
    }
    
    .tech-item {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .work-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 2rem;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }
    
    .tech-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero-stats {
        justify-content: center;
    }
}

/* 스크롤 애니메이션 */
.fade-in {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.scale-in {
    opacity: 0;
    transform: scale(0.8);
    transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.scale-in.visible {
    opacity: 1;
    transform: scale(1);
}