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

:root {
    --bg: #0a0a0f;
    --bg-card: #12121a;
    --bg-card-hover: #1a1a2e;
    --accent: #6c63ff;
    --accent-light: #8b83ff;
    --accent-glow: rgba(108, 99, 255, 0.15);
    --text: #e4e4e7;
    --text-muted: #8888a0;
    --text-dim: #55556a;
    --border: #1e1e2e;
    --radius: 12px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

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

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

/* NAV */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 16px 0;
    transition: var(--transition);
    background: transparent;
}

.nav--scrolled {
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 12px 0;
}

.nav__container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav__logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: -0.02em;
}

.nav__links {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav__links a {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-muted);
    transition: var(--transition);
    position: relative;
}

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

.nav__links a:hover {
    color: var(--text);
}

.nav__links a:hover::after {
    width: 100%;
}

.nav__burger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav__burger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text);
    transition: var(--transition);
}

/* HERO */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.hero__bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 60% at 50% 0%, rgba(108, 99, 255, 0.12) 0%, transparent 60%),
        radial-gradient(ellipse 40% 40% at 80% 50%, rgba(99, 102, 241, 0.08) 0%, transparent 50%);
}

.hero__content {
    text-align: center;
    position: relative;
    z-index: 1;
}

.hero__greeting {
    font-size: 1rem;
    font-weight: 500;
    color: var(--accent);
    margin-bottom: 12px;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.hero__name {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: 16px;
    background: linear-gradient(135deg, var(--text) 0%, var(--text-muted) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero__title {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--text-muted);
    font-weight: 400;
    margin-bottom: 16px;
}

.hero__subtitle {
    font-size: 1rem;
    color: var(--text-dim);
    max-width: 560px;
    margin: 0 auto 40px;
    line-height: 1.7;
}

.hero__actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    font-family: inherit;
}

.btn--primary {
    background: var(--accent);
    color: #fff;
}

.btn--primary:hover {
    background: var(--accent-light);
    box-shadow: 0 0 30px var(--accent-glow);
    transform: translateY(-2px);
}

.btn--outline {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-muted);
}

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

.hero__scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.hero__scroll a {
    color: var(--text-dim);
    transition: var(--transition);
}

.hero__scroll a:hover {
    color: var(--accent);
}

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

/* SECTIONS */
.section {
    padding: 100px 0;
}

.section__title {
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 48px;
    text-align: center;
    position: relative;
}

.section__title::after {
    content: '';
    display: block;
    width: 48px;
    height: 3px;
    background: var(--accent);
    margin: 16px auto 0;
    border-radius: 2px;
}

/* ABOUT */
.about__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about__text p {
    color: var(--text-muted);
    margin-bottom: 16px;
    font-size: 1rem;
    line-height: 1.8;
}

.about__stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.stat {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    text-align: center;
    transition: var(--transition);
}

.stat:hover {
    border-color: var(--accent);
    box-shadow: 0 0 30px var(--accent-glow);
    transform: translateY(-4px);
}

.stat__number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent);
    line-height: 1;
}

.stat__plus {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent);
}

.stat__label {
    display: block;
    margin-top: 8px;
    font-size: 0.85rem;
    color: var(--text-dim);
}

/* TIMELINE */
.timeline {
    position: relative;
    padding-left: 40px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 7px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border);
}

.timeline__item {
    position: relative;
    margin-bottom: 40px;
}

.timeline__item:last-child {
    margin-bottom: 0;
}

.timeline__dot {
    position: absolute;
    left: -40px;
    top: 6px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--bg);
    border: 2px solid var(--accent);
    z-index: 1;
}

.timeline__item:hover .timeline__dot {
    background: var(--accent);
    box-shadow: 0 0 12px var(--accent-glow);
}

.timeline__content {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    transition: var(--transition);
}

.timeline__content:hover {
    border-color: rgba(108, 99, 255, 0.3);
    transform: translateX(8px);
}

.timeline__date {
    font-size: 0.8rem;
    color: var(--accent);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.timeline__role {
    font-size: 1.15rem;
    font-weight: 600;
    margin: 8px 0 4px;
}

.timeline__company {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.timeline__desc {
    font-size: 0.9rem;
    color: var(--text-dim);
    line-height: 1.7;
}

/* SKILLS */
.skills__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

@media (min-width: 769px) {
    .skills__grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .skills__grid .skill-card:last-child {
        grid-column: 2;
    }
}

.skill-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    transition: var(--transition);
}

.skill-card:hover {
    border-color: var(--accent);
    box-shadow: 0 0 30px var(--accent-glow);
    transform: translateY(-4px);
}

.skill-card__icon {
    font-size: 2rem;
    margin-bottom: 16px;
}

.skill-card__title {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.skill-card__text {
    font-size: 0.875rem;
    color: var(--text-dim);
    line-height: 1.7;
}

/* ACHIEVEMENTS */
.achievements__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.achievement {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    transition: var(--transition);
}

.achievement:hover {
    border-color: var(--accent);
    box-shadow: 0 0 30px var(--accent-glow);
    transform: translateY(-4px);
}

.achievement__icon {
    font-size: 2rem;
    margin-bottom: 12px;
}

.achievement h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.achievement p {
    font-size: 0.875rem;
    color: var(--text-dim);
    line-height: 1.7;
}

/* CERTS */
.certs__list {
    max-width: 700px;
    margin: 0 auto;
}

.cert {
    display: flex;
    align-items: baseline;
    gap: 20px;
    padding: 16px 0;
    border-bottom: 1px solid var(--border);
    transition: var(--transition);
}

.cert:hover {
    padding-left: 8px;
}

.cert:last-child {
    border-bottom: none;
}

.cert__year {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--accent);
    min-width: 48px;
}

.cert__name {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* CONTACT */
.contact__subtitle {
    text-align: center;
    color: var(--text-dim);
    margin-top: -32px;
    margin-bottom: 48px;
    font-size: 1rem;
}

.contact__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    max-width: 700px;
    margin: 0 auto;
}

.contact-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px 20px;
    transition: var(--transition);
    color: var(--text-muted);
}

.contact-card:hover {
    border-color: var(--accent);
    color: var(--accent);
    box-shadow: 0 0 30px var(--accent-glow);
    transform: translateY(-4px);
}

.contact-card__label {
    font-size: 0.8rem;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.contact-card__value {
    font-size: 0.95rem;
    font-weight: 500;
}

/* FOOTER */
.footer {
    padding: 32px 0;
    text-align: center;
    border-top: 1px solid var(--border);
    color: var(--text-dim);
    font-size: 0.85rem;
}

/* ANIMATIONS */
.animate-in {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.animate-in:nth-child(2) { transition-delay: 0.1s; }
.animate-in:nth-child(3) { transition-delay: 0.2s; }
.animate-in:nth-child(4) { transition-delay: 0.3s; }
.animate-in:nth-child(5) { transition-delay: 0.4s; }

.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

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

/* RESPONSIVE */
@media (max-width: 768px) {
    .nav__links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        background: rgba(10, 10, 15, 0.95);
        backdrop-filter: blur(20px);
        padding: 24px;
        gap: 20px;
        border-bottom: 1px solid var(--border);
    }

    .nav__links.open {
        display: flex;
    }

    .nav__burger {
        display: flex;
    }

    .about__grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .skills__grid,
    .achievements__grid {
        grid-template-columns: 1fr;
    }

    .contact__grid {
        grid-template-columns: 1fr;
        max-width: 300px;
    }

    .section {
        padding: 70px 0;
    }

    .timeline {
        padding-left: 32px;
    }

    .timeline__dot {
        left: -32px;
        width: 12px;
        height: 12px;
    }

    .timeline::before {
        left: 5px;
    }
}

@media (max-width: 480px) {
    .hero__actions {
        flex-direction: column;
        align-items: center;
    }

    .about__stats {
        grid-template-columns: 1fr 1fr;
        gap: 16px;
    }

    .stat {
        padding: 20px;
    }

    .stat__number {
        font-size: 2rem;
    }
}