/* Portfolio Page Styles */
@import url("https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/static/pretendard.min.css");

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

body {
    font-family: 'Pretendard', sans-serif;
    line-height: 1.6;
    color: #ffffff;
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a2e 50%, #16213e 100%);
    min-height: 100vh;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Hero Section */
.portfolio-hero {
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a2e 50%, #16213e 100%);
    color: white;
    padding: 120px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.portfolio-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="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 {
    position: relative;
    z-index: 2;
}

.hero-title {
    font-size: 60px;
    font-weight: 700;
    margin-bottom: 30px;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 24px;
    font-weight: 400;
    opacity: 0.9;
}

/* Section Header */
.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-header h2 {
    font-size: 48px;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 20px;
}

.section-header p {
    font-size: 20px;
    color: #cccccc;
    max-width: 600px;
    margin: 0 auto;
}

/* Portfolio Section */
.portfolio-section {
    padding: 120px 0;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.3);
    backdrop-filter: blur(10px);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.portfolio-item {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.3);
    backdrop-filter: blur(10px);
}

.portfolio-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.portfolio-image {
    position: relative;
    height: 300px;
    overflow: hidden;
}

.portfolio-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

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

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.9), rgba(118, 75, 162, 0.9));
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 30px;
    opacity: 0;
    transition: opacity 0.3s ease;
    color: white;
}

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

.portfolio-title-text {
    transition: opacity 0.3s ease;
}

.portfolio-item:hover .portfolio-title-text {
    opacity: 0;
}

.portfolio-overlay h4 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 12px;
    color: #ffffff;
}

.portfolio-overlay p {
    font-size: 16px;
    margin-bottom: 16px;
    opacity: 0.9;
    color: #ffffff;
}

.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 20px;
    justify-content: center;
}

.tech-stack span {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.portfolio-link {
    display: inline-block;
    padding: 12px 24px;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.3);
    backdrop-filter: blur(10px);
    color: #00d4ff;
    text-decoration: none;
    border-radius: 25px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.portfolio-link:hover {
    background: #00d4ff;
    color: white;
    transform: translateY(-2px);
}

/* Stats Section */
.stats-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    color: white;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
}

.stat-item {
    text-align: center;
    padding: 40px 20px;
}

.stat-number {
    font-size: 48px;
    font-weight: 700;
    color: #00d4ff;
    margin-bottom: 12px;
    display: block;
}

.stat-label {
    font-size: 18px;
    font-weight: 500;
    opacity: 0.9;
    color: #ffffff;
}

/* CTA Section */
.portfolio-cta {
    padding: 120px 0;
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a2e 50%, #16213e 100%);
    text-align: center;
}

.cta-content h2 {
    font-size: 48px;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 20px;
}

.cta-content p {
    font-size: 20px;
    color: #cccccc;
    margin-bottom: 40px;
}

.cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
}

.btn {
    display: inline-block;
    padding: 16px 32px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: "";
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: #00d4ff;
    color: white;
    border: 2px solid #00d4ff;
}

.btn-primary:hover {
    background: transparent;
    color: #00d4ff;
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: #00d4ff;
    border: 2px solid #00d4ff;
}

.btn-secondary:hover {
    background: #00d4ff;
    color: white;
    transform: translateY(-2px);
}

/* Responsive */
@media (max-width: 1200px) {
    .portfolio-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 1024px) {
    .portfolio-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 40px;
    }
    
    .hero-subtitle {
        font-size: 18px;
    }
    
    .section-header h2 {
        font-size: 36px;
    }
    
    .portfolio-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .cta-content h2 {
        font-size: 36px;
    }
}