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

:root {
    --bg:      #1f252d;
    --surface: #1b2026;
    --border:  #252c34;
    --border2: #333c47;
    --accent:  #7eb8d4;
    --dim:     #4e5e6e;
    --muted:   #7a8fa0;
    --text:    #e0eaf2;
    --sans:    'Syne', sans-serif;
    --mono:    'Geist Mono', monospace;
}

html { scroll-behavior: smooth; }

body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--mono);
    font-size: 14px;
    line-height: 1.7;
    overflow-x: hidden;
}

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

/* ── NAV ── */
nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    padding: 1.25rem 6vw;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border);
    background: rgba(12, 14, 16, 0.85);
    backdrop-filter: blur(12px);
}

.nav-name {
    font-family: var(--sans);
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.01em;
    color: var(--text);
}

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

.nav-links a {
    font-size: 0.7rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--muted);
    transition: color 0.15s;
}
.nav-links a:hover { color: var(--text); }

.lang-switch {
    font-size: 0.65rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--dim);
    border: 1px solid var(--border);
    padding: 0.25rem 0.6rem;
    border-radius: 2px;
    transition: color 0.15s, border-color 0.15s;
}
.lang-switch:hover { color: var(--text); border-color: var(--border2); }

.nav-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.65rem;
    color: var(--muted);
    letter-spacing: 0.08em;
}
.status-dot {
    width: 5px; height: 5px;
    background: #4ade80;
    border-radius: 50%;
    animation: pulse 2.5s ease-in-out infinite;
}

/* ── HERO ── */
#hero {
    padding: 9rem 6vw 5rem;
}

.hero-eyebrow {
    font-size: 0.65rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 1.8rem;
    opacity: 0;
    animation: fadeUp 0.5s 0.1s forwards;
}

h1 {
    font-family: var(--sans);
    font-size: clamp(2.4rem, 10vw, 8rem);
    font-weight: 800;
    line-height: 0.94;
    letter-spacing: -0.035em;
    color: var(--text);
    opacity: 0;
    animation: fadeUp 0.6s 0.25s forwards;
}

.hero-meta {
    margin-top: 3rem;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 2rem;
    align-items: end;
    opacity: 0;
    animation: fadeUp 0.6s 0.45s forwards;
}

.hero-desc {
    max-width: 420px;
    font-size: 0.8rem;
    line-height: 1.85;
    color: var(--muted);
}
.hero-desc strong { color: var(--accent); font-weight: 400; }

.hero-cta {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.55rem 1.2rem;
    font-family: var(--mono);
    font-size: 0.68rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    border-radius: 2px;
    transition: all 0.15s;
}

.btn-primary {
    background: var(--text);
    color: var(--bg);
}
.btn-primary:hover { background: #fff; }

.btn-ghost {
    border: 1px solid var(--border2);
    color: var(--muted);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

/* ── MARQUEE ── */
.marquee-wrapper {
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    overflow: hidden;
    padding: 0.9rem 0;
    background: var(--surface);
}
.marquee-track {
    display: flex;
    width: max-content;
    animation: marquee 32s linear infinite;
}
.marquee-track span {
    padding: 0 1.8rem;
    font-size: 0.65rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--dim);
    white-space: nowrap;
}
.marquee-track span.sep { color: var(--border2); padding: 0; }

/* ── SECTIONS ── */
section {
    padding: 5rem 6vw;
}

.section-header {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.section-index {
    font-size: 0.6rem;
    letter-spacing: 0.15em;
    color: var(--muted);
    min-width: 2.5rem;
}

.section-title {
    font-family: var(--sans);
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--muted);
}

/* ── EXPERIENCE ── */
#experience { border-top: 1px solid var(--border); }

.exp-grid { display: flex; flex-direction: column; gap: 1px; }

.exp-item {
    background: var(--surface);
    border: 1px solid var(--border);
    padding: 2rem 2.5rem;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 0.75rem 2rem;
    transition: border-color 0.2s;
    position: relative;
    overflow: hidden;
}
.exp-item::before {
    content: '';
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 3px;
    background: var(--accent);
    transform: scaleY(0);
    transform-origin: bottom;
    transition: transform 0.3s ease;
}
.exp-item:hover { border-color: var(--border2); }
.exp-item:hover::before { transform: scaleY(1); }

.exp-company {
    font-family: var(--sans);
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    color: var(--text);
}
.exp-role {
    font-size: 0.7rem;
    color: var(--muted);
    margin-top: 0.2rem;
    letter-spacing: 0.04em;
}
.exp-period {
    font-size: 0.68rem;
    color: var(--dim);
    letter-spacing: 0.08em;
    text-align: right;
    white-space: nowrap;
    padding-top: 0.15rem;
}
.exp-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
    grid-column: 1 / -1;
    margin-top: 0.8rem;
}
.tag {
    padding: 0.15rem 0.55rem;
    border: 1px solid var(--border);
    font-size: 0.6rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--dim);
    border-radius: 2px;
}
.exp-bullets {
    grid-column: 1 / -1;
    margin-top: 0.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}
.exp-bullets li {
    list-style: none;
    font-size: 0.75rem;
    color: var(--muted);
    padding-left: 1.1em;
    position: relative;
    line-height: 1.65;
}
.exp-bullets li::before {
    content: '—';
    position: absolute;
    left: 0;
    color: var(--dim);
    font-size: 0.6rem;
    top: 0.35em;
}

/* ── SKILLS ── */
#skills { border-top: 1px solid var(--border); background: var(--surface); }

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1px;
    background: var(--border);
}

.skill-card {
    background: var(--surface);
    padding: 1.6rem 2rem;
}

.skill-category {
    font-size: 0.6rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--dim);
    margin-bottom: 1rem;
    font-family: var(--sans);
    font-weight: 600;
}

.skill-items {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.skill-pill {
    padding: 0.25rem 0.65rem;
    background: var(--bg);
    font-size: 0.68rem;
    color: var(--muted);
    border-radius: 2px;
    border: 1px solid var(--border);
    transition: color 0.15s, border-color 0.15s;
}
.skill-pill:hover { color: var(--text); border-color: var(--border2); }

/* ── ABOUT ── */
#about { border-top: 1px solid var(--border); }

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    align-items: start;
}

.about-text {
    font-size: 0.8rem;
    line-height: 1.95;
    color: var(--muted);
}
.about-text strong { color: var(--text); font-weight: 400; }

.about-text a,
.hero-desc a {
    color: var(--accent);
    border-bottom: 1px solid currentColor;
    opacity: 0.8;
    transition: opacity 0.15s;
}
.about-text a:hover,
.hero-desc a:hover { opacity: 1; }

.about-sidebar {
    display: flex;
    flex-direction: column;
    gap: 1px;
    background: var(--border);
}

.stat-row {
    background: var(--surface);
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: baseline;
}

.stat-label {
    font-size: 0.65rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--dim);
}

.stat-value {
    font-family: var(--sans);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text);
    letter-spacing: -0.02em;
}

.formation-block {
    background: var(--surface);
    padding: 1.5rem 2rem;
    margin-top: 1px;
}
.formation-block .stat-label { margin-bottom: 0.75rem; display: block; }
.formation-line {
    font-size: 0.72rem;
    color: var(--muted);
    line-height: 1.8;
}
.formation-line + .formation-line {
    margin-top: 0.5rem;
    padding-top: 0.5rem;
    border-top: 1px solid var(--border);
}

/* ── CONTACT ── */
#contact {
    border-top: 1px solid var(--border);
    background: var(--surface);
}

.contact-inner {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 4rem;
    align-items: center;
}

.contact-heading {
    font-family: var(--sans);
    font-size: clamp(2rem, 5vw, 4.5rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1;
    color: var(--text);
}

.contact-sub {
    margin-top: 1.25rem;
    font-size: 0.72rem;
    color: var(--dim);
    letter-spacing: 0.06em;
}

.contact-links {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.contact-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.7rem 1.25rem;
    border: 1px solid var(--border);
    color: var(--muted);
    font-size: 0.7rem;
    letter-spacing: 0.08em;
    transition: all 0.15s;
    white-space: nowrap;
}
.contact-link:hover { border-color: var(--border2); color: var(--text); }
.contact-link svg { flex-shrink: 0; opacity: 0.5; }

/* ── FOOTER ── */
footer {
    border-top: 1px solid var(--border);
    padding: 1.5rem 6vw;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.62rem;
    color: var(--dim);
    letter-spacing: 0.1em;
}

/* ── ANIMATIONS ── */
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(16px); }
    to   { opacity: 1; transform: translateY(0); }
}
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50%       { opacity: 0.35; }
}
@keyframes marquee {
    from { transform: translateX(0); }
    to   { transform: translateX(-50%); }
}

.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.55s ease, transform 0.55s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
    #hero { padding: 7rem 3vw 3.5rem; }
    section { padding: 3.5rem 3vw; }
    nav { padding: 1.25rem 3vw; }
    .hero-meta { grid-template-columns: 1fr; gap: 1.5rem; }
    .hero-cta { justify-content: flex-start; }
    .about-grid { grid-template-columns: 1fr; gap: 2.5rem; }
    .contact-inner { grid-template-columns: 1fr; gap: 2rem; }
    footer { flex-direction: column; gap: 0.4rem; text-align: center; }
    .nav-links { display: none; }
}