/* ==========================================================================
   Portfolio Website - Main Stylesheet
   ========================================================================== */

/* Google Fonts Import */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+KR:wght@300;400;500;600;700&display=swap');

/* ==========================================================================
   Reset & Base Styles
   ========================================================================== */

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

strong {
    font-weight: 700;
    color: #ffffff;
}

body {
    font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.6;
    color: #e0e0e0;
    background: #1a1a1a;
    min-height: 100vh;
}

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

/* ==========================================================================
   Header Styles
   ========================================================================== */

header {
    text-align: center;
    padding: 60px 0;
    color: #ffffff;
}

header h1 {
    font-size: 3rem;
    margin-bottom: 5px;
    font-weight: 400;
    text-shadow: 1px 1px 3px rgba(0,0,0,0.8);
    -webkit-text-stroke: 0.5px rgb(255, 255, 255);
}

header p {
    font-size: 1.2rem;
    color: #ff6b35;
}

/* ==========================================================================
   Navigation Styles
   ========================================================================== */

nav {
    text-align: center;
    margin-bottom: 50px;
}

nav ul {
    list-style: none;
    display: inline-flex;
    background: rgba(45, 45, 45, 0.8);
    border-radius: 50px;
    padding: 10px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 107, 53, 0.2);
}

nav li {
    margin: 0 10px;
}

nav a {
    color: #e0e0e0;
    text-decoration: none;
    padding: 12px 25px;
    border-radius: 25px;
    transition: all 0.3s ease;
    font-weight: 500;
}

nav a:hover, nav a.active {
    background: #ff6b35;
    color: #ffffff;
    transform: translateY(-2px);
}

/* ==========================================================================
   Content Section Styles
   ========================================================================== */

.content-section {
    background: #2d2d2d;
    border-radius: 20px;
    padding: 40px;
    margin-bottom: 30px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
    border: 1px solid #404040;
    transform: translateY(20px);
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards;
}

@keyframes fadeInUp {
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.section {
    display: none;
}

.section.active {
    display: block;
}

h2 {
    color: #ff6b35;
    margin-bottom: 30px;
    font-size: 2rem;
    position: relative;
    padding-bottom: 10px;
}

h2:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: calc(100% - 60px);
    height: 3px;
    background: linear-gradient(to right, #ff6b35, #ffa726);
    border-radius: 2px;
}

/* ==========================================================================
   Grid Layouts
   ========================================================================== */

.projects-grid, .games-grid, .blog-grid {
    display: grid;
    gap: 30px;
    margin-top: 30px;
}

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

.games-grid {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
}

.blog-grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
}

/* ==========================================================================
   Project Card Styles
   ========================================================================== */

.project-card {
    background: linear-gradient(135deg, #404040 0%, #333333 100%);
    border: 1px solid #555555;
    border-radius: 15px;
    padding: 25px;
    color: #e0e0e0;
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(255, 107, 53, 0.2);
    border-color: #ff6b35;
}

.project-card h3 {
    margin-bottom: 15px;
    font-size: 1.3rem;
}

.project-card p {
    margin-bottom: 15px;
    opacity: 0.9;
}

.project-card .tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 15px;
}

.tech-tag {
    background: rgba(255, 107, 53, 0.2);
    border: 1px solid rgba(255, 107, 53, 0.3);
    padding: 5px 10px;
    border-radius: 15px;
    font-size: 0.8rem;
    color: #ffa726;
}

.project-link {
    display: inline-block;
    background: #ff6b35;
    padding: 8px 15px;
    border-radius: 20px;
    text-decoration: none;
    color: white;
    font-weight: 500;
    transition: all 0.3s ease;
}

.project-link:hover {
    background: #ffa726;
    transform: scale(1.05);
}

/* ==========================================================================
   Game Card Styles
   ========================================================================== */

.game-card {
    background: linear-gradient(135deg, #333333 0%, #404040 100%);
    border: 1px solid #555555;
    border-radius: 15px;
    padding: 20px;
    color: #e0e0e0;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
}

.game-card:hover {
    transform: scale(1.05);
    box-shadow: 0 15px 30px rgba(255, 107, 53, 0.3);
    border-color: #ff6b35;
}

.game-icon {
    font-size: 3rem;
    margin-bottom: 15px;
    opacity: 0.8;
}

.game-card h3 {
    margin-bottom: 10px;
}

/* ==========================================================================
   Blog Card Styles
   ========================================================================== */

.blog-card {
    border-radius: 15px;
    overflow: hidden;
    transition: all 0.3s ease;
    cursor: pointer;
    height: 200px;
}

.blog-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(255, 107, 53, 0.3);
}

.blog-thumbnail {
    width: 100%;
    height: 100%;
    position: relative;
    display: flex;
    align-items: flex-end;
    padding: 20px;
    background-size: cover;
    background-position: center;
}

.blog-overlay {
    background: linear-gradient(transparent, rgba(0,0,0,0.8));
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    padding: 20px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    transition: all 0.3s ease;
}

.blog-card:hover .blog-overlay {
    background: linear-gradient(transparent, rgba(0,0,0,0.9));
}

.blog-overlay h3 {
    color: white;
    margin: 0 0 8px 0;
    font-size: 1.2rem;
    font-weight: 600;
}

.blog-date {
    color: rgba(255,255,255,0.8);
    font-size: 0.9rem;
    margin: 0 0 8px 0;
}

.blog-category {
    background: rgba(255, 107, 53, 0.8);
    color: white;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 0.8rem;
    align-self: flex-start;
    font-weight: 500;
}

/* ==========================================================================
   Skills Grid (Legacy - kept for compatibility)
   ========================================================================== */

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 30px;
}

.skill-item {
    background: linear-gradient(135deg, #404040 0%, #333333 100%);
    border: 1px solid #ff6b35;
    padding: 20px;
    border-radius: 15px;
    text-align: center;
    color: #e0e0e0;
    font-weight: 600;
    transition: all 0.3s ease;
}

.skill-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(255, 107, 53, 0.3);
    background: linear-gradient(135deg, #ff6b35 0%, #ffa726 100%);
    color: #ffffff;
}

/* ==========================================================================
   About Section Styles
   ========================================================================== */

.about-content {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #b0b0b0;
}

/* ==========================================================================
   Contact Section Styles
   ========================================================================== */

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 30px;
}

.contact-item {
    background: linear-gradient(135deg, #404040 0%, #333333 100%);
    border: 1px solid #555555;
    padding: 20px;
    border-radius: 15px;
    text-align: center;
    transition: all 0.3s ease;
    color: #e0e0e0;
}

.contact-item:hover {
    transform: translateY(-5px);
    border-color: #ff6b35;
    box-shadow: 0 10px 20px rgba(255, 107, 53, 0.2);
}

.contact-item i {
    font-size: 2rem;
    margin-bottom: 10px;
    color: #ff6b35;
}

/* ==========================================================================
   Footer Styles
   ========================================================================== */

footer {
    text-align: center;
    padding: 40px 0;
    color: rgba(255,255,255,0.8);
}

/* ==========================================================================
   Floating Button Styles
   ========================================================================== */

.add-project-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: linear-gradient(135deg, #ff6b35 0%, #ffa726 100%);
    color: white;
    border: none;
    border-radius: 50%;
    width: 60px;
    height: 60px;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: 0 10px 20px rgba(255, 107, 53, 0.3);
    transition: all 0.3s ease;
}

.add-project-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 15px 30px rgba(255, 107, 53, 0.4);
}

/* ==========================================================================
   Modal Styles
   ========================================================================== */

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.8);
    z-index: 1000;
}

.modal-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: #2d2d2d;
    border: 1px solid #404040;
    padding: 30px;
    border-radius: 20px;
    width: 90%;
    max-width: 500px;
}

.close {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 1.5rem;
    cursor: pointer;
    color: #999;
}
.delete-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    background: rgba(255, 0, 0, 0.8);
    color: white;
    border: none;
    border-radius: 50%;
    width: 25px;
    height: 25px;
    font-size: 0.8rem;
    cursor: pointer;
    opacity: 0;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.project-card:hover .delete-btn,
.game-card:hover .delete-btn,
.blog-card:hover .delete-btn {
    opacity: 1;
}

.delete-btn:hover {
    background: rgba(255, 0, 0, 1);
    transform: scale(1.1);
}
/* ==========================================================================
   Form Styles
   ========================================================================== */

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
    color: #e0e0e0;
}

.form-group input, .form-group textarea, .form-group select {
    width: 100%;
    padding: 12px;
    border: 2px solid #555555;
    background: #404040;
    color: #e0e0e0;
    border-radius: 10px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
    outline: none;
    border-color: #ff6b35;
}

.submit-btn {
    background: linear-gradient(135deg, #ff6b35 0%, #ffa726 100%);
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 25px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(255, 107, 53, 0.3);
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */

@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    header {
        padding: 40px 0;
    }
    
    header h1 {
        font-size: 2.2rem;
    }
    
    header p {
        font-size: 1.1rem;
    }
    
    nav ul {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
        padding: 8px;
        margin: 0 10px;
    }
    
    nav li {
        margin: 5px;
    }
    
    nav a {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
    
    .content-section {
        padding: 25px 20px;
        margin-bottom: 20px;
    }
    
    h2 {
        font-size: 1.7rem;
        margin-bottom: 25px;
    }
    
    .projects-grid, .games-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .blog-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .contact-info {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .project-card, .game-card {
        padding: 20px;
    }
    
    .contact-item {
        padding: 18px;
    }
    
    .add-project-btn {
        bottom: 20px;
        right: 20px;
        width: 55px;
        height: 55px;
        font-size: 1.3rem;
    }
    
    .modal-content {
        padding: 25px 20px;
        width: 95%;
    }
}