/* ─── Reset & Variables ─────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --bg:       #0d0d0d;
    --surface:  #151515;
    --border:   #252525;
    --text:     #e8e4dc;
    --muted:    #666;
    --accent:   #c8f060;   
    --accent2:  #f06040;  
    --fav:      #c8f060;
    --radius:   8px;
    --font-display: 'Syne', sans-serif;
    --font-mono:    'DM Mono', monospace;
}

html { scroll-behavior: smooth; }

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

/* ─── Noise overlay ─────────────────────────────────── */
.noise {
    position: fixed; inset: 0; z-index: 999;
    pointer-events: none;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
    opacity: 0.4;
}

/* ─── Nav ───────────────────────────────────────────── */
nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    display: flex; align-items: center; justify-content: space-between;
    padding: 1.2rem 3rem;
    background: rgba(13,13,13,0.85);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}

.nav-logo {
    font-family: var(--font-display);
    font-weight: 800; font-size: 1.1rem;
    color: var(--accent);
    letter-spacing: 0.05em;
}

.nav-links { list-style: none; display: flex; gap: 2rem; }
.nav-links a {
    color: var(--muted); text-decoration: none;
    font-size: 0.8rem; letter-spacing: 0.1em; text-transform: uppercase;
    transition: color 0.2s;
}
.nav-links a:hover { color: var(--text); }

/* ─── Hero ──────────────────────────────────────────── */
.hero {
    min-height: 100vh;
    display: flex; flex-direction: column; justify-content: flex-end;
    padding: 6rem 3rem 4rem;
    position: relative;
    border-bottom: 1px solid var(--border);
}

.hero::before {
    content: '';
    position: absolute; top: 0; left: 0; right: 0; bottom: 0;
    background:
        radial-gradient(ellipse 60% 50% at 80% 20%, rgba(200,240,96,0.07) 0%, transparent 70%),
        radial-gradient(ellipse 40% 40% at 10% 80%, rgba(240,96,64,0.05) 0%, transparent 70%);
    pointer-events: none;
}

.hero-tag {
    display: inline-flex; align-items: center; gap: 0.5rem;
    font-size: 0.75rem; letter-spacing: 0.15em; text-transform: uppercase;
    color: var(--accent); margin-bottom: 1.5rem;
}
.hero-tag::before {
    content: '';
    width: 8px; height: 8px; border-radius: 50%;
    background: var(--accent);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.4; transform: scale(0.10); }
}

.hero-tag-info {
    font-size: 0.65rem; color: var(--muted);
    margin-top: 0.3rem;
}

.hero-name {
    font-family: var(--font-display);
    font-size: clamp(3.5rem, 10vw, 9rem);
    font-weight: 800;
    line-height: 0.95;
    letter-spacing: -0.02em;
    color: var(--text);
    opacity: 0; transform: translateY(30px);
    animation: fadeUp 0.8s 0.2s forwards;
}

.hero-name span {
    color: transparent;
    -webkit-text-stroke: 1.5px var(--accent);
}

.hero-sub {
    margin-top: 1.5rem;
    font-size: 0.85rem; letter-spacing: 0.2em; text-transform: uppercase;
    color: var(--muted);
    opacity: 0; animation: fadeUp 0.8s 0.4s forwards;
}

.hero-scroll {
    position: absolute; bottom: 2rem; right: 3rem;
    font-size: 0.75rem; letter-spacing: 0.15em; text-transform: uppercase;
    color: var(--muted);
    writing-mode: vertical-rl;
}

/* ─── Main layout ───────────────────────────────────── */
main { max-width: 960px; margin: 0 auto; padding: 0 2rem; }

section {
    padding: 6rem 0;
    border-bottom: 1px solid var(--border);
    opacity: 0; transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}
section.visible { opacity: 1; transform: translateY(0); }

.section-label {
    font-family: var(--font-display);
    font-size: 2rem; font-weight: 700;
    margin-bottom: 3rem;
    display: flex; align-items: baseline; gap: 0.8rem;
}
.section-label span {
    font-size: 0.8rem; color: var(--accent);
    letter-spacing: 0.1em; font-family: var(--font-mono);
}

/* ─── Projects ──────────────────────────────────────── */
.project-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 1rem;
}

.project-card {
    display: block;
    padding: 2rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    text-decoration: none;
    color: var(--text);
    transition: border-color 0.2s, transform 0.2s;
    position: relative; overflow: hidden;
}
.project-card:hover {
    border-color: var(--accent);
    transform: translateY(-3px);
}
.project-card::after {
    content: '';
    position: absolute; inset: 0;
    background: linear-gradient(135deg, rgba(200,240,96,0.04), transparent);
    opacity: 0; transition: opacity 0.3s;
}
.project-card:hover::after { opacity: 1; }

.project-card.featured { grid-row: span 1; }

.project-tag {
    display: inline-block;
    font-size: 0.65rem; letter-spacing: 0.15em; text-transform: uppercase;
    color: var(--accent); background: rgba(200,240,96,0.1);
    padding: 0.2rem 0.6rem; border-radius: 2rem;
    margin-bottom: 1rem;
}

.project-card h3 {
    font-family: var(--font-display);
    font-size: 1.4rem; font-weight: 700;
    margin-bottom: 0.6rem;
}
.project-card p { font-size: 0.82rem; color: var(--muted); line-height: 1.6; }
.project-link {
    display: inline-block; margin-top: 1.2rem;
    font-size: 0.75rem; letter-spacing: 0.1em;
    color: var(--accent);
}

/* ─── Skills ────────────────────────────────────────── */
.skills-block {
    margin-bottom: 3rem;
    padding: 2rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}
.skills-block.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; }

.skills-category {
    font-family: var(--font-display);
    font-size: 0.8rem; font-weight: 600;
    text-transform: uppercase; letter-spacing: 0.15em;
    color: var(--muted); margin-bottom: 1.2rem;
}

.skill-list { display: flex; flex-direction: column; gap: 0.6rem; }
.skill-item {
    display: flex; align-items: center; justify-content: space-between;
    padding: 0.5rem 0.8rem;
    border-radius: 4px;
    background: rgba(255,255,255,0.02);
}
.skill-item.fav { background: rgba(200,240,96,0.05); }
.skill-name { font-size: 0.88rem; }
.skill-level {
    font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase;
    padding: 0.15rem 0.6rem; border-radius: 2rem;
}
.skill-level.advanced  { background: rgba(200,240,96,0.15); color: var(--accent); }
.skill-level.intermediate { background: rgba(240,96,64,0.15); color: var(--accent2); }
.skill-level.lower { background: rgba(255,255,255,0.05); color: var(--muted); }

.tools-grid {
    display: flex; flex-wrap: wrap; gap: 0.5rem;
}
.tool {
    padding: 0.35rem 0.85rem;
    border: 1px solid var(--border);
    border-radius: 2rem;
    font-size: 0.78rem;
    transition: border-color 0.2s, color 0.2s;
}
.tool:hover { border-color: var(--text); color: var(--text); }
.tool.fav {
    border-color: rgba(200,240,96,0.4);
    color: var(--accent);
    background: rgba(200,240,96,0.06);
}
.tool.dim { color: var(--muted); }

.plain-list { list-style: none; display: flex; flex-direction: column; gap: 0.5rem; }
.plain-list li {
    font-size: 0.85rem; padding: 0.3rem 0;
    border-bottom: 1px solid var(--border);
    display: flex; justify-content: space-between; align-items: center;
}
.plain-list li em { color: var(--accent); font-style: normal; font-size: 0.75rem; }

/* ─── Education ─────────────────────────────────────── */
.cert-grid {
    display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem;
}

.cert-card {
    display: flex; flex-direction: column; gap: 0.4rem;
    padding: 1.5rem;
    background: var(--surface); border: 1px solid var(--border);
    border-radius: var(--radius); text-decoration: none; color: var(--text);
    transition: border-color 0.2s, transform 0.2s;
}
.cert-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.cert-issuer { font-size: 0.7rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); }
.cert-name { font-family: var(--font-display); font-size: 1rem; font-weight: 600; }
.cert-dl { font-size: 0.75rem; color: var(--accent); margin-top: 0.4rem; }

/* ─── Contact ───────────────────────────────────────── */
.contact-grid { display: flex; flex-direction: column; gap: 0; }

.contact-item {
    display: flex; align-items: center; justify-content: space-between;
    padding: 1.2rem 0;
    border-bottom: 1px solid var(--border);
    text-decoration: none; color: var(--text);
    transition: color 0.2s;
}
.contact-item:hover { color: var(--accent); }
.contact-item.no-link { cursor: default; }
.contact-label {
    font-size: 0.7rem; letter-spacing: 0.15em; text-transform: uppercase; color: var(--muted);
    min-width: 80px;
}
.contact-val { font-size: 0.88rem; }

/* ─── Footer ────────────────────────────────────────── */
footer {
    display: flex; justify-content: space-between; align-items: center;
    padding: 2rem 3rem;
    font-size: 0.75rem; color: var(--muted);
    border-top: 1px solid var(--border);
}

/* ─── Animations ────────────────────────────────────── */
@keyframes fadeUp {
    to { opacity: 1; transform: translateY(0); }
}

/* ─── Responsive ────────────────────────────────────── */
@media (max-width: 700px) {
    nav { padding: 1rem 1.5rem; }
    .nav-links { gap: 1rem; }
    .hero { padding: 6rem 1.5rem 3rem; }
    main { padding: 0 1.5rem; }
    .project-grid { grid-template-columns: 1fr; }
    .skills-block.two-col { grid-template-columns: 1fr; }
    .cert-grid { grid-template-columns: 1fr; }
    footer { flex-direction: column; gap: 0.5rem; text-align: center; padding: 1.5rem; }
}