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

:root {
    --bg: #0a0a12;
    --surface: #13132b;
    --surface-2: #1e1e3a;
    --accent: #8b5cf6;
    --accent-2: #c084fc;
    --gold: #fbbf24;
    --text: #f0f0f5;
    --text-2: #94a3b8;
    --border: rgba(255, 255, 255, 0.06);
    --radius: 12px;
    --font: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    --transition: 0.3s ease;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

button {
    font-family: var(--font);
}

/* NAV */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(10, 10, 18, 0.88);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border);
    padding: 0 2rem;
}

.nav-inner {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
}

.nav-logo {
    font-weight: 800;
    font-size: 1.25rem;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    font-size: 0.88rem;
    color: var(--text-2);
    transition: color var(--transition);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--text);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.hamburger {
    display: none;
    background: none;
    border: none;
    color: var(--text);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.25rem;
}

/* HERO */
#hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 6rem 2rem 4rem;
    position: relative;
    overflow: hidden;
}

#hero::before {
    content: '';
    position: absolute;
    top: -15%;
    left: 50%;
    transform: translateX(-50%);
    width: 700px;
    height: 700px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.12), transparent 65%);
    pointer-events: none;
}

#hero::after {
    content: '';
    position: absolute;
    bottom: -20%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.08), transparent 65%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 600px;
}

.avatar {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--accent);
    margin: 0 auto 1.5rem;
    box-shadow: 0 0 40px rgba(139, 92, 246, 0.2);
}

.hero-name {
    font-size: clamp(2.2rem, 6vw, 3.8rem);
    font-weight: 800;
    margin-bottom: 0.4rem;
    letter-spacing: -0.02em;
}

.hero-name .highlight {
    background: linear-gradient(135deg, var(--gold), #f59e0b);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-title {
    font-size: clamp(1rem, 2.5vw, 1.3rem);
    color: var(--accent-2);
    margin-bottom: 1.5rem;
    font-weight: 500;
    letter-spacing: 0.02em;
}

.hero-tagline {
    color: var(--text-2);
    max-width: 480px;
    margin: 0 auto 2.25rem;
    font-size: 0.95rem;
    line-height: 1.8;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.7rem 1.75rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.88rem;
    transition: all var(--transition);
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent), #6d28d9);
    color: #fff;
    border: none;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(139, 92, 246, 0.35);
}

.btn-outline {
    background: transparent;
    color: var(--text);
    border: 1.5px solid rgba(255, 255, 255, 0.15);
}

.btn-outline:hover {
    border-color: var(--accent-2);
    color: var(--accent-2);
    transform: translateY(-2px);
}

.btn-group {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* SECTIONS */
section {
    padding: 5rem 2rem;
}

.section-title {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    font-weight: 700;
    text-align: center;
    margin-bottom: 0.5rem;
}

.section-subtitle {
    color: var(--text-2);
    text-align: center;
    margin-bottom: 3rem;
    font-size: 0.95rem;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
}

/* ABOUT */
#about {
    background: var(--surface);
}

.about-grid {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 3rem;
    align-items: center;
    max-width: 800px;
    margin: 0 auto;
}

.about-img {
    width: 160px;
    height: 160px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--accent);
}

.about-text p {
    color: var(--text-2);
    margin-bottom: 1rem;
    font-size: 0.92rem;
    line-height: 1.8;
}

.about-text p:last-child {
    margin-bottom: 0;
}

.about-text .hl {
    color: var(--gold);
    font-weight: 600;
}

/* SKILLS */
.filter-bar {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 2rem;
}

.filter-btn {
    padding: 0.45rem 1.1rem;
    border-radius: 50px;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--text-2);
    cursor: pointer;
    font-size: 0.82rem;
    transition: all var(--transition);
    font-family: var(--font);
}

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

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 1rem;
}

.skill-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1.2rem 0.5rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: all var(--transition);
    cursor: default;
}

.skill-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent);
    box-shadow: 0 8px 28px rgba(139, 92, 246, 0.15);
}

.skill-card i {
    font-size: 2.5rem;
}

.skill-card span {
    font-size: 0.78rem;
    color: var(--text-2);
    font-weight: 500;
    text-align: center;
}

.skill-card.hidden {
    display: none;
}

/* EXPERIENCE */
#experience {
    background: var(--surface);
}

.exp-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    margin-bottom: 1.25rem;
    transition: all var(--transition);
}

.exp-card:hover {
    border-color: var(--accent);
    box-shadow: 0 8px 28px rgba(139, 92, 246, 0.12);
}

.exp-card:last-child {
    margin-bottom: 0;
}

.exp-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.75rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.exp-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.15rem;
}

.exp-company {
    color: var(--accent-2);
    font-size: 0.88rem;
    font-weight: 500;
}

.exp-date {
    color: var(--text-2);
    font-size: 0.82rem;
    white-space: nowrap;
}

.exp-desc {
    color: var(--text-2);
    font-size: 0.9rem;
    line-height: 1.7;
    margin-bottom: 1rem;
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.tech-tag {
    padding: 0.2rem 0.65rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 50px;
    font-size: 0.72rem;
    color: var(--text-2);
    transition: all var(--transition);
}

.tech-tag:hover {
    border-color: var(--accent);
    color: var(--accent);
}

/* PROJECTS */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.project-card {
    display: block;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: all var(--transition);
}

.project-card:hover {
    transform: translateY(-6px);
    border-color: var(--accent);
    box-shadow: 0 14px 35px rgba(0, 0, 0, 0.35);
}

.project-card img {
    width: 100%;
    height: 175px;
    object-fit: cover;
    transition: transform var(--transition);
}

.project-card:hover img {
    transform: scale(1.03);
}

.project-card-body {
    padding: 1.2rem;
}

.project-card h3 {
    font-size: 1.05rem;
    margin-bottom: 0.4rem;
    font-weight: 600;
}

.project-card p {
    color: var(--text-2);
    font-size: 0.83rem;
    line-height: 1.65;
}

/* CONTACT */
#contact {
    background: var(--surface);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 3rem;
    align-items: start;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-form label {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
    font-size: 0.82rem;
    color: var(--text-2);
    font-weight: 500;
}

.contact-form input,
.contact-form textarea {
    padding: 0.75rem 1rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    font-family: var(--font);
    font-size: 0.9rem;
    transition: border-color var(--transition);
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--accent);
}

.contact-form textarea {
    resize: vertical;
    min-height: 120px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    padding-top: 0.5rem;
}

.contact-info-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.contact-info-icon {
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--surface-2);
    border-radius: 50%;
    font-size: 1rem;
    flex-shrink: 0;
}

.contact-info-item span {
    color: var(--text-2);
    font-size: 0.9rem;
}

.social-links {
    display: flex;
    gap: 0.75rem;
    margin-top: 0.5rem;
}

.social-link {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border);
    border-radius: 50%;
    transition: all var(--transition);
    font-size: 1.2rem;
    color: var(--text-2);
}

.social-link:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
    transform: translateY(-2px);
}

/* FOOTER */
footer {
    padding: 2rem;
    text-align: center;
    border-top: 1px solid var(--border);
    color: var(--text-2);
    font-size: 0.82rem;
}

/* ANIMATIONS */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.65s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* RESPONSIVE */
@media (max-width: 900px) {
    .about-grid {
        grid-template-columns: 1fr;
        text-align: center;
        justify-items: center;
    }

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

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        background: rgba(10, 10, 18, 0.97);
        flex-direction: column;
        align-items: center;
        padding: 1.5rem 0;
        gap: 1rem;
        transform: translateY(-120%);
        transition: transform 0.3s ease;
        backdrop-filter: blur(14px);
    }

    .nav-links.open {
        transform: translateY(0);
    }

    .hamburger {
        display: block;
    }

    section {
        padding: 4rem 1.25rem;
    }

    .skills-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 480px) {
    .skills-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 0.75rem;
    }

    .skill-card {
        padding: 0.9rem 0.4rem;
    }

    .skill-card i {
        font-size: 2rem;
    }

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

    .hero-tagline {
        font-size: 0.88rem;
    }

    .exp-header {
        flex-direction: column;
    }

    .exp-card {
        padding: 1.25rem;
    }
}