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

:root {
    --primary-color: #4f46e5;
    --secondary-color: #06b6d4;
    --accent-color: #f59e0b;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --bg-primary: #ffffff;
    --bg-secondary: #f3f4f6;
    --bg-dark: #111827;
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-ai: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

body {
    font-family: 'Noto Sans SC', sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

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

.nav-menu a:hover {
    color: var(--primary-color);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

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

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="white" opacity="0.1"/><circle cx="75" cy="75" r="1" fill="white" opacity="0.1"/><circle cx="50" cy="50" r="1" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
    z-index: 1;
}

.hero-text {
    color: white;
}

.hero-title {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.typing-text {
    background: linear-gradient(45deg, #ff6b6b, #4ecdc4, #45b7d1, #96ceb4);
    background-size: 300% 300%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientShift 3s ease-in-out infinite;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 20px;
    opacity: 0.9;
}

.hero-description {
    font-size: 1.1rem;
    margin-bottom: 30px;
    opacity: 0.8;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 20px;
}

.btn {
    padding: 15px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-block;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: white;
    color: var(--primary-color);
    border: 2px solid white;
}

.btn-primary:hover {
    background: transparent;
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background: white;
    color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.hero-visual {
    position: relative;
    height: 400px;
}

.floating-elements {
    position: relative;
    width: 100%;
    height: 100%;
}

.float-item {
    position: absolute;
    padding: 20px;
    border-radius: 15px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: white;
    font-weight: 600;
    font-size: 1.1rem;
    animation: float 6s ease-in-out infinite;
}

.float-item.react {
    top: 10%;
    left: 20%;
    animation-delay: 0s;
}

.float-item.vue {
    top: 60%;
    right: 10%;
    animation-delay: 2s;
}

.float-item.ai {
    top: 30%;
    right: 30%;
    animation-delay: 4s;
}

.float-item.js {
    bottom: 20%;
    left: 30%;
    animation-delay: 1s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(5deg); }
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.scroll-down {
    width: 30px;
    height: 50px;
    border: 2px solid rgba(255, 255, 255, 0.8);
    border-radius: 25px;
    position: relative;
}

.scroll-down::before {
    content: '';
    position: absolute;
    top: 10px;
    left: 50%;
    width: 6px;
    height: 6px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 50%;
    transform: translateX(-50%);
    animation: scroll 2s infinite;
}

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

@keyframes scroll {
    0% { top: 10px; opacity: 1; }
    100% { top: 30px; opacity: 0; }
}

/* Sections */
.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 50px;
    color: var(--text-primary);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

/* About Section */
.about {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text p {
    font-size: 1.1rem;
    margin-bottom: 20px;
    color: var(--text-secondary);
    line-height: 1.8;
}

.about-stats {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.stat-item {
    text-align: center;
    padding: 30px;
    background: white;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

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

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-top: 10px;
}

/* Skills Section */
.skills {
    padding: 100px 0;
    background: white;
}

.skills-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.skill-category h3 {
    font-size: 1.5rem;
    margin-bottom: 30px;
    color: var(--text-primary);
}

.skill-items {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.skill-item {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 20px;
    background: var(--bg-secondary);
    border-radius: 15px;
    transition: all 0.3s ease;
}

.skill-item:hover {
    transform: translateX(10px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.skill-icon {
    font-size: 2rem;
}

.skill-info h4 {
    font-size: 1.2rem;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.skill-level {
    width: 200px;
    height: 8px;
    background: #e0e0e0;
    border-radius: 4px;
    overflow: hidden;
}

.skill-bar {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 4px;
    transition: width 1s ease;
}

/* Experience Section */
.experience {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.experience-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.experience-card {
    padding: 40px;
    background: white;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.experience-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: var(--gradient-primary);
}

.experience-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.card-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.experience-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.experience-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Management Section */
.management {
    padding: 100px 0;
    background: white;
}

.management-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
    align-items: center;
}

.achievement-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 30px;
    background: var(--bg-secondary);
    border-radius: 15px;
    margin-bottom: 20px;
    transition: all 0.3s ease;
}

.achievement-item:hover {
    transform: translateX(10px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.achievement-icon {
    font-size: 2.5rem;
    flex-shrink: 0;
}

.achievement-text h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.achievement-text p {
    color: var(--text-secondary);
    line-height: 1.6;
}

.management-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.circle-progress {
    position: relative;
}

.progress-ring svg {
    transform: rotate(-90deg);
}

.progress-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
}

.progress-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.progress-label {
    font-size: 1rem;
    color: var(--text-secondary);
}

/* AI Vision Section */
.ai-vision {
    padding: 100px 0;
    background: var(--gradient-ai);
    color: white;
    position: relative;
    overflow: hidden;
}

.ai-vision::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="ai-grid" width="50" height="50" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="2" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23ai-grid)"/></svg>');
    opacity: 0.3;
}

.vision-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.vision-text {
    font-size: 1.2rem;
    line-height: 1.8;
}

.vision-text strong {
    color: #fbbf24;
    font-weight: 600;
}

.vision-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-top: 30px;
}

.tag {
    padding: 10px 20px;
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 25px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.tag:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

.vision-visual {
    position: relative;
    height: 400px;
}

.ai-particles {
    position: relative;
    width: 100%;
    height: 100%;
}

.particle {
    position: absolute;
    width: 10px;
    height: 10px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 50%;
    animation: particleFloat 8s infinite linear;
}

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

.particle:nth-child(2) {
    top: 60%;
    right: 20%;
    animation-delay: 2s;
}

.particle:nth-child(3) {
    top: 40%;
    left: 60%;
    animation-delay: 4s;
}

.particle:nth-child(4) {
    top: 80%;
    left: 40%;
    animation-delay: 6s;
}

.particle:nth-child(5) {
    top: 30%;
    right: 40%;
    animation-delay: 1s;
}

.particle:nth-child(6) {
    top: 70%;
    left: 70%;
    animation-delay: 3s;
}

@keyframes particleFloat {
    0% { transform: translateY(0px) scale(1); opacity: 0; }
    10% { opacity: 1; }
    90% { opacity: 1; }
    100% { transform: translateY(-100px) scale(0.5); opacity: 0; }
}

/* Footer */
.footer {
    background: var(--bg-dark);
    color: white;
    padding: 50px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-text h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--accent-color);
}

.footer-text p {
    color: #9ca3af;
    line-height: 1.6;
}

.footer-contact p {
    color: #9ca3af;
    line-height: 1.6;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #374151;
}

.footer-bottom p {
    color: #6b7280;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-buttons {
        justify-content: center;
    }

    .about-content,
    .skills-grid,
    .management-content,
    .vision-content,
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .nav-menu {
        display: none;
    }

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

    .hero-visual {
        height: 300px;
    }

    .vision-visual {
        height: 300px;
    }
}