:root {
    --bg: #050505;
    --surface: #101014;
    --surface-soft: rgba(255, 255, 255, 0.04);
    --primary: #B8FF1A;
    --primary-soft: rgba(184, 255, 26, 0.16);
    --secondary: #B7B7B7;
    --text: #FFFFFF;
    --radius: 24px;
    --transition: 0.32s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    background: radial-gradient(circle at top, rgba(184, 255, 26, 0.08), transparent 18%),
        linear-gradient(180deg, #050505 0%, #040404 100%);
    color: var(--text);
    min-height: 100vh;
}

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

button,
a {
    font: inherit;
}

.container {
    width: min(1240px, calc(100% - 3rem));
    margin: 0 auto;
}

.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(5, 5, 5, 0.82);
    border-bottom: 1px solid rgba(184, 255, 26, 0.12);
    backdrop-filter: blur(16px);
}

.navbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1rem 0;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 0.85rem;
    text-decoration: none;
    color: var(--text);
    font-weight: 700;
    letter-spacing: 0.02em;
}

.logo-img {
    width: 36px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 1.35rem;
}

.nav-item {
    text-decoration: none;
    color: var(--secondary);
    font-size: 0.95rem;
    transition: color var(--transition);
}

.nav-item.active,
.nav-item:hover {
    color: var(--primary);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.55rem;
    padding: 0.95rem 1.5rem;
    border-radius: 999px;
    border: 1px solid transparent;
    text-decoration: none;
    transition: transform var(--transition), background var(--transition), border var(--transition), color var(--transition);
}

.btn:hover {
    transform: translateY(-2px);
}

.btn-primary {
    color: #050505;
    background: linear-gradient(135deg, rgba(184, 255, 26, 0.95), rgba(143, 230, 24, 1));
}

.btn-secondary,
.btn-outline {
    color: var(--primary);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(184, 255, 26, 0.2);
}

.btn-secondary:hover,
.btn-outline:hover {
    background: rgba(184, 255, 26, 0.14);
}

.menu-toggle {
    display: none;
    width: 46px;
    height: 46px;
    border: none;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 18px;
    cursor: pointer;
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    margin: 7px auto;
    background: var(--text);
    border-radius: 1px;
}

.hero {
    padding: 5.2rem 0 3.2rem;
}

.hero-inner {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 2.5rem;
    align-items: center;
}

.hero-copy {
    padding-right: 1rem;
}

.hero-badge {
    display: inline-flex;
    padding: 0.8rem 1rem;
    border-radius: 999px;
    background: rgba(184, 255, 26, 0.12);
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 1.5rem;
    letter-spacing: 0.01em;
}

.hero h1 {
    font-size: clamp(3.2rem, 5vw, 4.8rem);
    line-height: 0.97;
    letter-spacing: -0.04em;
    max-width: 680px;
}

.highlight {
    color: var(--primary);
}

.hero p {
    margin-top: 1.5rem;
    max-width: 630px;
    color: var(--secondary);
    line-height: 1.85;
}

.hero-actions {
    margin-top: 2.4rem;
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.hero-stats {
    margin-top: 3rem;
    display: grid;
    grid-template-columns: repeat(4, minmax(130px, 1fr));
    gap: 1rem;
}

.stat-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(184, 255, 26, 0.14);
    padding: 1.5rem;
    border-radius: 24px;
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.18);
}

.stat-card span {
    display: block;
    color: var(--primary);
    font-size: 1.4rem;
    font-weight: 700;
}

.stat-card p {
    margin-top: 0.75rem;
    color: var(--secondary);
    font-size: 0.95rem;
}

.hero-preview {
    display: grid;
    gap: 1.3rem;
    justify-items: center;
}

.hero-frame {
    position: relative;
    width: 100%;
    max-width: 440px;
    aspect-ratio: 1 / 1;
    border-radius: 32px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(184, 255, 26, 0.18);
    box-shadow: 0 30px 90px rgba(184, 255, 26, 0.14);
    overflow: hidden;
}

.hero-label {
    position: absolute;
    top: 24px;
    left: 24px;
    padding: 0.9rem 1.1rem;
    border-radius: 18px;
    background: rgba(184, 255, 26, 0.12);
    color: var(--primary);
    font-weight: 700;
    z-index: 1;
}

.hero-image {
    width: 100%;
    height: 100%;
    display: grid;
    place-items: center;
    padding: 3rem;
}

.hero-image img {
    width: 220px;
    height: auto;
    object-fit: contain;
}

.hero-controls {
    position: absolute;
    bottom: 24px;
    right: 24px;
    display: flex;
    gap: 0.75rem;
}

.hero-dot {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.25);
    border: 1px solid rgba(184, 255, 26, 0.25);
    display: grid;
    place-items: center;
    cursor: pointer;
}

.hero-dot::before {
    content: '';
    width: 10px;
    height: 10px;
    border-top: 2px solid var(--primary);
    border-right: 2px solid var(--primary);
    transform: rotate(45deg);
}

.hero-dot:first-child::before {
    transform: rotate(-135deg);
}

.section {
    padding: 5rem 0;
}

.section-inner {
    display: grid;
    gap: 2rem;
}

.section-heading {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
    margin-bottom: 2rem;
}

.section-heading span {
    color: var(--primary);
    font-weight: 600;
}

.section-heading h2 {
    font-size: clamp(1.9rem, 2.2vw, 3rem);
    line-height: 1.2;
}

.about-grid,
.skills-grid,
.experience-layout,
.portfolio-grid,
.cv-grid,
.contact-grid {
    display: grid;
    gap: 1.5rem;
}

.about-grid {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: start;
}

.about-text p {
    color: var(--secondary);
    line-height: 1.75;
    margin-bottom: 1.25rem;
}

.badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.85rem;
    margin-top: 1.5rem;
}

.badges span {
    display: inline-flex;
    padding: 0.8rem 1rem;
    border-radius: 999px;
    background: rgba(184, 255, 26, 0.12);
    color: var(--primary);
    font-size: 0.9rem;
}

.about-card,
.skill-card,
.experience-card,
.education-card,
.achievement-card,
.project-card,
.cv-preview,
.cv-info-card,
.contact-card {
    background: var(--surface);
    border: 1px solid rgba(184, 255, 26, 0.15);
    border-radius: var(--radius);
    box-shadow: 0 18px 60px rgba(0, 0, 0, 0.2);
}

.about-card,
.skill-card,
.experience-card,
.education-card,
.achievement-card,
.project-info,
.cv-info-card,
.contact-card {
    padding: 2rem;
}

.about-card h3,
.skill-card h3,
.experience-card h3,
.education-card h3,
.achievement-card h3 {
    color: var(--primary);
    margin-bottom: 1.4rem;
}

.info-list {
    display: grid;
    gap: 1.2rem;
}

.info-list span {
    display: block;
    color: var(--secondary);
    font-size: 0.95rem;
    margin-bottom: 0.35rem;
}

.info-list strong {
    color: var(--text);
}

.skills-grid {
    grid-template-columns: repeat(4, minmax(200px, 1fr));
}

.skill-card ul {
    list-style: none;
    display: grid;
    gap: 0.85rem;
}

.skill-card li {
    color: var(--secondary);
    line-height: 1.75;
}

.experience-layout {
    grid-template-columns: 1.4fr 0.95fr;
    align-items: start;
}

.timeline-item {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(184, 255, 26, 0.12);
    border-radius: 18px;
    padding: 1.3rem 1.4rem;
    margin-bottom: 1rem;
}

.timeline-item span {
    display: block;
    color: var(--primary);
    font-weight: 700;
    margin-bottom: 0.65rem;
}

.timeline-item p {
    color: var(--secondary);
    line-height: 1.75;
}

.experience-side {
    display: grid;
    gap: 1.5rem;
}

.portfolio-grid {
    grid-template-columns: repeat(3, minmax(260px, 1fr));
}

.project-card {
    overflow: hidden;
    display: grid;
    grid-template-rows: auto 1fr;
}

.project-card img {
    height: 230px;
    object-fit: cover;
    transition: transform var(--transition);
}

.project-card:hover img {
    transform: scale(1.05);
}

.project-info {
    display: grid;
    gap: 1rem;
}

.project-info h3 {
    color: var(--primary);
    font-size: 1.05rem;
}

.project-info p {
    color: var(--secondary);
    line-height: 1.75;
}

.cv-grid {
    grid-template-columns: 1.05fr 0.95fr;
    align-items: center;
}

.cv-preview {
    overflow: hidden;
    border-radius: 28px;
}

.cv-preview img {
    display: block;
    width: 100%;
    height: auto;
    object-fit: cover;
}

.cv-info-card {
    display: grid;
    gap: 1.25rem;
}

.cv-info-card h3 {
    color: var(--primary);
    font-size: 1.5rem;
}

.cv-detail-row {
    display: grid;
    grid-template-columns: 130px 1fr;
    gap: 0.75rem;
    align-items: center;
    color: var(--secondary);
}

.cv-detail-row span {
    color: var(--secondary);
}

.cv-detail-row strong {
    color: var(--text);
    font-weight: 600;
}

.contact-grid {
    grid-template-columns: repeat(3, minmax(220px, 1fr));
}

.contact-card {
    padding: 2rem;
}

.contact-card h3 {
    margin-bottom: 0.9rem;
    color: var(--primary);
}

.contact-card p {
    color: var(--secondary);
    line-height: 1.75;
}

.footer {
    padding: 2.8rem 0 4rem;
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    border-top: 1px solid rgba(184, 255, 26, 0.12);
    padding-top: 1.5rem;
}

.footer-brand {
    display: inline-flex;
    align-items: center;
    gap: 0.85rem;
}

.footer-brand img {
    width: 36px;
}

.footer-links {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.footer-links a {
    color: var(--secondary);
    text-decoration: none;
}

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

.back-to-top {
    position: fixed;
    right: 1.5rem;
    bottom: 1.5rem;
    width: 48px;
    height: 48px;
    border: none;
    border-radius: 16px;
    background: rgba(184, 255, 26, 0.16);
    color: var(--text);
    cursor: pointer;
    display: grid;
    place-items: center;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.24);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition), transform var(--transition);
}

.back-to-top.show {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(-4px);
}

.loader {
    position: fixed;
    inset: 0;
    background: #050505;
    display: grid;
    place-items: center;
    z-index: 120;
}

.loader-ring {
    width: 72px;
    height: 72px;
    border: 4px solid rgba(184, 255, 26, 0.16);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1.2s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.fade-in {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.85s ease, transform 0.85s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.navbar.scrolled {
    background: rgba(5, 5, 5, 0.95);
    border-bottom: 1px solid rgba(184, 255, 26, 0.2);
}