:root {
    --bg-color: #151517; 
    --nav-bg-color: rgba(21, 21, 23, 0.75); 
    --card-bg-color: #1e1e20; 
    --text-color: #f5f5f7; 
    --text-secondary: #a1a1a6; 
    --accent-color: #0a84ff; 
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --border-color: rgba(255, 255, 255, 0.1);
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-family);
    -webkit-font-smoothing: antialiased;
    line-height: 1.6;
}

header#main-header {
    position: sticky;
    top: 0;
    z-index: 9999;
    background-color: var(--nav-bg-color);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px); /* Safari support */
    border-bottom: 1px solid var(--border-color);
    padding: 15px 5%;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

nav .logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-color);
    text-decoration: none;
    letter-spacing: -0.5px;
}

#nav-menu {
    display: flex;
    gap: 30px;
}

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

#nav-menu a:hover {
    color: var(--accent-color);
}

#nav-toggle {
    display: none;
    cursor: pointer;
    color: var(--text-color);
}

main {
    max-width: 1000px;
    margin: 0 auto;
    padding: 40px 20px;
}

section {
    margin-bottom: 80px;
}

h1, h2 {
    letter-spacing: -0.5px;
    margin-bottom: 20px;
}

#about {
    text-align: center;
    padding-top: 40px;
}

#about h1 {
    font-size: 2.5rem;
    margin-bottom: 30px;
}

/* Typing Effect Cursor */
.cursor {
    display: inline-block;
    width: 3px;
    background-color: var(--accent-color);
    margin-left: 4px;
    animation: blink 1s step-end infinite;
}

@keyframes blink { 
    50% { opacity: 0; } 
}

.about-content p {
    text-align: justify;
    hyphens: auto;
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 15px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

#about img {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    object-fit: cover;
    margin-top: 30px;
    border: 3px solid var(--border-color);
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

#projects h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 30px;
}

.filters {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 40px;
    justify-content: center;
}

.filter-btn {
    background-color: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    padding: 8px 18px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.filter-btn:hover {
    border-color: var(--text-color);
    color: var(--text-color);
}

.filter-btn.active {
    background-color: var(--accent-color);
    color: #fff;
    border-color: var(--accent-color);
}

#projects-grid {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.project {
    background: var(--card-bg-color);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 30px;
    position: relative;
}

/* Fade In Animation for Filtering/Show More */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(15px); }
    to { opacity: 1; transform: translateY(0); }
}

.project:not(.hidden) {
    animation: fadeIn 0.6s ease forwards;
}

.project h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.project p {
    text-align: justify;
    hyphens: auto;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    list-style: none;
    margin-bottom: 25px;
}

.project-tags li {
    background: rgba(255, 255, 255, 0.05);
    color: var(--accent-color);
    padding: 5px 12px;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 600;
}

.project-images {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 15px;
    margin-bottom: 20px;
}

.project-media-item {
    display: block;
    overflow: hidden;
    border-radius: 8px;
    aspect-ratio: 16/9;
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease;
}

.project-media-item:hover {
    transform: scale(1.03);
}

.project-media-item img, 
.project-media-item video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* GitHub Link on Cards */
.project > a {
    position: absolute;
    top: 30px;
    right: 30px;
    color: var(--text-secondary);
    transition: color 0.3s ease;
}

.project > a:hover {
    color: #fff;
}

#show-more-btn {
    display: block;
    margin: 50px auto 0;
    padding: 12px 35px;
    background-color: transparent;
    border: 2px solid var(--accent-color);
    color: var(--accent-color);
    border-radius: 25px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

#show-more-btn:hover {
    background-color: var(--accent-color);
    color: #fff;
}

#contact {
    text-align: center;
}

.contact-links {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-top: 20px;
}

.contact-links a {
    color: var(--text-secondary);
    transition: color 0.3s ease, transform 0.3s ease;
}

.contact-links a:hover {
    color: var(--accent-color);
    transform: translateY(-3px);
}

footer {
    text-align: center;
    padding: 30px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    border-top: 1px solid var(--border-color);
}

@media (max-width: 768px) {
    #nav-toggle {
        display: block;
    }
    
    #nav-menu {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 60px;
        left: 0;
        width: 100%;
        background-color: var(--nav-bg-color);
        backdrop-filter: blur(15px);
        -webkit-backdrop-filter: blur(15px);
        padding: 20px;
        border-bottom: 1px solid var(--border-color);
    }
    
    #nav-menu.open {
        display: flex;
    }
    
    #about h1 { font-size: 2rem; }
    
    .project { padding: 20px; }
    .project > a { position: relative; top: 0; right: 0; display: inline-block; margin-top: 15px; }
}