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

:root {
    --primary: #4ade80;
    --primary-dark: #22c55e;
    --bg: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --text: #e6edf3;
    --text-muted: #8b949e;
    --accent: #58a6ff;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 6.5rem;
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: 'Space Grotesk', sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(13, 17, 23, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--bg-tertiary);
    z-index: 1000;
    padding: 1rem 0;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    text-transform: lowercase;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.3s;
    font-size: 0.95rem;
}

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

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 6rem 2rem 2rem;
    overflow: hidden;
}

.hero > * {
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: clamp(3rem, 10vw, 8rem);
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 1rem;
    animation: fadeInDown 0.8s ease-out;
    text-shadow: 0 0 30px rgba(74, 222, 128, 0.3);
}

.hero-subtitle {
    font-size: clamp(1.2rem, 4vw, 2rem);
    color: var(--text-muted);
    margin-bottom: 3rem;
    font-weight: 300;
    animation: fadeInUp 0.8s ease-out 0.1s both;
}

/* About Box */
.about-box {
    background: var(--bg-secondary);
    border: 2px solid var(--bg-tertiary);
    border-radius: 30px;
    padding: 2.5rem;
    max-width: 600px;
    margin: 2rem auto;
    animation: fadeInUp 0.8s ease-out 0.2s both;
    transition: all 0.3s;
    scroll-margin-top: 6.5rem;
}

.about-box:hover {
    border-color: var(--primary);
    box-shadow: 0 0 20px rgba(74, 222, 128, 0.2);
}

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

.scroll-indicator {
    margin-top: 4rem;
    animation: fadeInUp 0.8s ease-out 0.3s both;
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.scroll-indicator.is-hidden {
    opacity: 0;
    transform: translateY(12px);
    pointer-events: none;
}

.scroll-indicator span {
    color: var(--text-muted);
    font-size: 0.95rem;
    display: block;
    margin-bottom: 1rem;
}

.scroll-arrow {
    color: var(--primary);
    font-size: 2rem;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(10px);
    }
}

/* Sections */
section {
    max-width: 1200px;
    margin: 0 auto;
    padding: 6rem 2rem;
    scroll-margin-top: 6.5rem;
}

h2 {
    font-size: clamp(2rem, 5vw, 3rem);
    color: var(--primary);
    margin-bottom: 3rem;
    font-weight: 700;
    text-align: center;
    position: relative;
}

h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: var(--primary);
    margin: 1rem auto 0;
    border-radius: 2px;
}

/* Skills Section */
.skills-section {
    background: linear-gradient(135deg, rgba(74, 222, 128, 0.05) 0%, rgba(88, 166, 255, 0.05) 100%);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.skill-card {
    background: var(--bg-secondary);
    padding: 2rem;
    border-radius: 15px;
    border: 1px solid var(--bg-tertiary);
    transition: all 0.3s;
    text-align: center;
}

.skill-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
    box-shadow: 0 10px 30px rgba(74, 222, 128, 0.15);
}

.skill-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.skill-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: var(--primary);
}

.skill-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Tech Stack */
.tech-section {
    background: var(--bg-secondary);
    border-top: 1px solid var(--bg-tertiary);
    border-bottom: 1px solid var(--bg-tertiary);
}

.tech-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
    margin-top: 2rem;
}

.tech-tag {
    background: var(--bg-tertiary);
    padding: 0.7rem 1.5rem;
    border-radius: 20px;
    border: 1px solid var(--bg-tertiary);
    color: var(--text);
    font-size: 0.95rem;
    transition: all 0.3s;
}

.tech-tag:hover {
    border-color: var(--primary);
    color: var(--primary);
    box-shadow: 0 0 15px rgba(74, 222, 128, 0.2);
}

/* Projects Section */
.projects-section {
    background: linear-gradient(135deg, rgba(74, 222, 128, 0.05) 0%, rgba(88, 166, 255, 0.05) 100%);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2.5rem;
    margin-top: 3rem;
}

.project-card {
    background: var(--bg-secondary);
    border-radius: 15px;
    overflow: hidden;
    border: 1px solid var(--bg-tertiary);
    transition: all 0.3s;
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-8px);
    border-color: var(--primary);
    box-shadow: 0 15px 40px rgba(74, 222, 128, 0.2);
}

.project-image {
    width: 100%;
    height: 200px;
    background-size: cover;
    background-position: center;
    position: relative;
    overflow: hidden;
}

.project-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3);
    transition: background 0.3s;
}

.project-card:hover .project-image::after {
    background: rgba(0, 0, 0, 0.1);
}

.project-content {
    padding: 2rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.project-card h3 {
    font-size: 1.3rem;
    color: var(--primary);
    margin-bottom: 0.8rem;
}

.project-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.project-tags span {
    background: var(--bg-tertiary);
    padding: 0.4rem 0.8rem;
    border-radius: 15px;
    font-size: 0.8rem;
    color: var(--accent);
    border: 1px solid var(--accent);
}

/* Building Section */
.building-section {
    background: var(--bg-secondary);
    border-top: 1px solid var(--bg-tertiary);
    border-bottom: 1px solid var(--bg-tertiary);
}

.building-list {
    max-width: 600px;
    margin: 3rem auto 0;
}

.building-item {
    display: flex;
    align-items: center;
    padding: 1.5rem;
    background: var(--bg-tertiary);
    border-radius: 10px;
    margin-bottom: 1rem;
    transition: all 0.3s;
    border: 1px solid transparent;
}

.building-item:hover {
    border-color: var(--primary);
    padding-left: 2rem;
}

.building-icon {
    color: var(--primary);
    font-size: 1.5rem;
    margin-right: 1.5rem;
}

.building-item span:last-child {
    color: var(--text);
    font-size: 1.05rem;
}

/* Contact Section */
.contact-section {
    text-align: center;
}

.contact-text {
    font-size: 1.2rem;
    color: var(--text-muted);
    margin-bottom: 3rem;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
    margin-bottom: 3rem;
}

.social-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-radius: 15px;
    border: 2px solid var(--bg-tertiary);
    color: var(--text);
    text-decoration: none;
    transition: all 0.3s;
    min-width: 120px;
}

.social-link:hover {
    border-color: var(--primary);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(74, 222, 128, 0.2);
}

.social-link i {
    font-size: 2rem;
    color: var(--primary);
}

.social-link span {
    font-size: 0.9rem;
    font-weight: 500;
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--bg-tertiary);
    padding: 2rem;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Animations */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *, *::before, *::after {
        animation: none !important;
        transition: none !important;
        scroll-behavior: auto !important;
    }
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        gap: 1rem;
    }

    .hero {
        padding: 8rem 1.5rem 2rem;
    }

    section {
        padding: 4rem 1.5rem;
    }

    .about-box {
        padding: 1.5rem;
    }

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

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

    .social-links {
        gap: 1rem;
    }

    .social-link {
        min-width: 100px;
        padding: 1rem;
    }

    .nav-links {
        display: none;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    .social-links {
        flex-direction: column;
    }

    .social-link {
        width: 100%;
    }
}