:root {
    --bg: #0a0a0f;
    --surface: #111118;
    --border: #1e1e2e;
    --accent: #7fff6e;
    --accent2: #6ebaff;
    --accent3: #ff2626;
    --accent4: #a546ff;
    --text: #e8e8f0;
    --muted: #fff;
    --card: #13131f;
}

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

html { scroll-behavior: smooth; }

body {
    font-family: 'DM Mono', monospace;
    background: var(--bg);
    color: var(--text);
    overflow-x: hidden;
    cursor: none;
}

/* CURSOR */
.cursor {
    width: 12px; height: 12px;
    background: var(--accent);
    border-radius: 50%;
    position: fixed; top: 0; left: 0;
    pointer-events: none;
    z-index: 9999;
    transition: transform 0.15s ease, width 0.2s, height 0.2s;
    transform: translate(-50%, -50%);
    mix-blend-mode: difference;
}
.cursor-ring {
    width: 36px; height: 36px;
    border: 1px solid var(--accent);
    border-radius: 50%;
    position: fixed; top: 0; left: 0;
    pointer-events: none;
    z-index: 9998;
    transform: translate(-50%, -50%);
    transition: all 0.08s ease;
    opacity: 0.5;
}
body:hover .cursor { opacity: 1; }

/* NOISE OVERLAY */
body::before {
    content: '';
    position: fixed; inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 512 512' 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");
    pointer-events: none;
    z-index: 1000;
    opacity: 0.4;
}

/* NAV */
nav {
    position: fixed; top: 0; left: 0; right: 0;
    z-index: 500;
    display: flex; align-items: center; justify-content: space-between;
    padding: 1.5rem 4rem;
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    background: rgba(10,10,15,0.7);
}
.nav-logo {
    font-family: 'Syne', sans-serif;
    font-weight: 800;
    font-size: 1.1rem;
    letter-spacing: -0.02em;
    color: var(--accent);
}
.nav-links { display: flex; gap: 2.5rem; }
.nav-links a {
    color: var(--muted);
    text-decoration: none;
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    transition: color 0.2s;
}
.nav-links a:hover { color: var(--accent); }

/* SECTIONS */
section {
    min-height: 100vh;
    padding: 8rem 4rem;
    position: relative;
}

/* HERO */
#hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 4rem;
    padding-top: 10rem;
}

.hero-label {
    font-size: 0.7rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 1.5rem;
    display: flex; align-items: center; gap: 0.75rem;
}
.hero-label::before {
    content: '';
    width: 32px; height: 1px;
    background: var(--accent);
}

h1 {
    font-family: 'Syne', sans-serif;
    font-size: clamp(3.5rem, 6vw, 6rem);
    font-weight: 800;
    line-height: 0.95;
    letter-spacing: -0.03em;
    margin-bottom: 2rem;
}
h1 .line { display: block; overflow: hidden; }
h1 .line span {
    display: block;
    animation: slideUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) both;
}
h1 .line:nth-child(2) span { animation-delay: 0.1s; }
h1 .line:nth-child(3) span { animation-delay: 0.2s; color: var(--accent); }

@keyframes slideUp {
    from { transform: translateY(110%); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.hero-bio {
    font-size: 0.95rem;
    line-height: 1.8;
    color: var(--muted);
    max-width: 440px;
    margin-bottom: 2.5rem;
    animation: fadeIn 1s 0.4s both;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.hero-cta {
    display: flex; gap: 1rem;
    animation: fadeIn 1s 0.55s both;
}
.btn {
    padding: 0.85rem 2rem;
    font-family: 'DM Mono', monospace;
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    text-decoration: none;
    border: 1px solid var(--accent);
    color: var(--accent);
    background: transparent;
    cursor: none;
    transition: all 0.25s;
    position: relative;
    overflow: hidden;
}
.btn::before {
    content: '';
    position: absolute; inset: 0;
    background: var(--accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
    z-index: -1;
}
.btn:hover { color: var(--bg); }
.btn:hover::before { transform: scaleX(1); }
.btn.secondary {
    border-color: var(--border);
    color: var(--muted);
}
.btn.secondary:hover { color: var(--text); border-color: var(--muted); }
.btn.secondary::before { background: var(--surface); }

/* HERO RIGHT — terminal card */
.hero-terminal {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 2rem;
    animation: fadeIn 1s 0.3s both;
    position: relative;
}
.terminal-bar {
    display: flex; gap: 0.5rem; margin-bottom: 1.5rem;
}
.terminal-dot {
    width: 10px; height: 10px; border-radius: 50%;
}
.terminal-dot:nth-child(1) { background: #ff5f57; }
.terminal-dot:nth-child(2) { background: #febc2e; }
.terminal-dot:nth-child(3) { background: #28c840; }
.terminal-line {
    font-size: 0.8rem;
    line-height: 2;
    color: var(--muted);
}
.terminal-line .cmd { color: var(--accent2); }
.terminal-line .val { color: var(--text); }
.terminal-line .key { color: var(--accent3); }
.terminal-line .str { color: var(--accent); }
.blink {
    display: inline-block;
    width: 8px; height: 1em;
    background: var(--accent);
    vertical-align: middle;
    animation: blink 1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

/* SECTION HEADERS */
.section-header {
    display: flex; align-items: baseline; gap: 1.5rem;
    margin-bottom: 4rem;
}
.section-number {
    font-size: 0.7rem;
    color: var(--accent);
    letter-spacing: 0.15em;
}
h2 {
    font-family: 'Syne', sans-serif;
    font-size: clamp(2rem, 4vw, 3.5rem);
    font-weight: 800;
    letter-spacing: -0.03em;
}
.section-line {
    flex: 1;
    height: 1px;
    background: var(--border);
}

/* SKILLS */
#skills { background: var(--surface); }

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1px;
    border: 1px solid var(--border);
}
.skill-item {
    background: var(--card);
    padding: 1.5rem;
    transition: background 0.2s, transform 0.2s;
    cursor: none;
    position: relative;
    overflow: hidden;
}
.skill-item::after {
    content: '';
    position: absolute; bottom: 0; left: 0;
    width: 100%; height: 2px;
    background: var(--accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}
.skill-item:hover { background: #16161f; }
.skill-item:hover::after { transform: scaleX(1); }
.skill-icon {
    font-size: 1.6rem;
    margin-bottom: 0.75rem;
}
.skill-name {
    font-family: 'Syne', sans-serif;
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 0.3rem;
}
.skill-type {
    font-size: 0.65rem;
    color: var(--muted);
    letter-spacing: 0.12em;
    text-transform: uppercase;
}
.skill-bar {
    margin-top: 0.75rem;
    height: 2px;
    background: var(--border);
    border-radius: 2px;
    overflow: hidden;
}
.skill-bar-fill {
    height: 100%;
    background: var(--accent);
    border-radius: 2px;
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 1s cubic-bezier(0.16, 1, 0.3, 1);
}
.skill-item.visible .skill-bar-fill { transform: scaleX(1); }

/* TOOLTIP */
.skill-tooltip {
    position: fixed;
    z-index: 600;
    pointer-events: none;
    max-width: 240px;
    background: var(--text);
    color: var(--bg);
    padding: 0.75rem 1rem;
    font-size: 0.72rem;
    line-height: 1.6;
    letter-spacing: 0.01em;
    opacity: 0;
    transform: translateY(6px) scale(0.97);
    transition: opacity 0.18s ease, transform 0.18s ease;
    border-left: 3px solid var(--accent);
    font-family: 'DM Mono', monospace;
}
.skill-label {
    font-size: 0.65rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin-top: 0.4rem;
    font-family: 'Syne', sans-serif;
    font-weight: 700;
}
.skill-tooltip.visible {
    opacity: 1;
    transform: translateY(0) scale(1);
}
.skill-tooltip strong {
    display: block;
    font-family: 'Syne', sans-serif;
    font-size: 0.8rem;
    margin-bottom: 0.3rem;
}
.skill-tooltip .tooltip-use {
    display: block;
    margin-top: 0.4rem;
    color: var(--card);
    font-size: 0.65rem;
    letter-spacing: 0.08em;
}

/* SKILLS CATEGORIES */
.skills-categories {
    display: flex; gap: 1rem; flex-wrap: wrap;
    margin-bottom: 2rem;
}

.soft-skills-header {
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--muted);
    margin-top: 2.5rem;
    margin-bottom: 1rem;
}

.soft-skills-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.soft-skill-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border: 1px solid var(--border);
    background: var(--card);
    font-size: 0.75rem;
    color: var(--muted);
    transition: border-color 0.2s, color 0.2s;
}

.soft-skill-item:hover {
    border-color: var(--muted);
    color: var(--text);
}

.cat-btn {
    padding: 0.4rem 1rem;
    font-family: 'DM Mono', monospace;
    font-size: 0.65rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--muted);
    cursor: none;
    transition: all 0.2s;
}
.cat-btn.active, .cat-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
}

/* PROJECTS */
#projects { background: var(--bg); }

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
    gap: 1.5rem;
}
.project-card {
    background: var(--card);
    border: 1px solid var(--border);
    padding: 2rem;
    cursor: none;
    transition: border-color 0.3s, transform 0.3s;
    position: relative;
    overflow: hidden;
}
.project-card::before {
    content: '';
    position: absolute; top: 0; left: 0;
    width: 3px; height: 100%;
    background: var(--accent);
    transform: scaleY(0);
    transform-origin: top;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.project-card:hover { border-color: var(--accent); transform: translateY(-4px); }
.project-card:hover::before { transform: scaleY(1); }

.project-header {
    display: flex; justify-content: space-between; align-items: flex-start;
    margin-bottom: 1.25rem;
}
.project-num {
    font-size: 0.65rem;
    color: var(--accent);
    letter-spacing: 0.1em;
}
.project-links { display: flex; gap: 0.75rem; }
.project-link {
    font-size: 0.7rem;
    color: var(--muted);
    text-decoration: none;
    letter-spacing: 0.08em;
    border-bottom: 1px solid transparent;
    transition: all 0.2s;
}
.project-link:hover { color: var(--accent2); border-bottom-color: var(--accent2); }

.project-title {
    font-family: 'Syne', sans-serif;
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    letter-spacing: -0.02em;
}
.project-desc {
    font-size: 0.8rem;
    line-height: 1.7;
    color: var(--muted);
    margin-bottom: 1.5rem;
}
.project-tags {
    display: flex; gap: 0.5rem; flex-wrap: wrap;
}
.tag {
    font-size: 0.6rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 0.25rem 0.6rem;
    border: 1px solid var(--border);
    color: var(--muted);
}
.tag.accent { border-color: var(--accent); color: var(--accent); }

/* CONTACT / FOOTER */
#contact {
    min-height: 60vh;
    display: flex; flex-direction: column;
    justify-content: center;
    background: var(--surface);
    text-align: center;
}
.contact-big {
    font-family: 'Syne', sans-serif;
    font-size: clamp(3rem, 8vw, 8rem);
    font-weight: 800;
    letter-spacing: -0.04em;
    line-height: 0.9;
    margin-bottom: 3rem;
    background: linear-gradient(135deg, var(--text) 0%, var(--muted) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.contact-big span { color: var(--accent); -webkit-text-fill-color: var(--accent); }
.contact-links {
    display: flex; gap: 2rem; justify-content: center; flex-wrap: wrap;
    margin-bottom: 5rem;
}
.contact-link {
    font-size: 0.75rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--muted);
    text-decoration: none;
    padding-bottom: 2px;
    border-bottom: 1px solid transparent;
    transition: all 0.2s;
}
.contact-link:hover { color: var(--accent); border-bottom-color: var(--accent); }

footer {
    padding: 2rem 4rem;
    display: flex; justify-content: space-between; align-items: center;
    border-top: 1px solid var(--border);
    font-size: 0.65rem;
    color: var(--muted);
    letter-spacing: 0.08em;
}

/* SCROLL REVEAL */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

.project-img {
    width: 100%;
    height: 160px;
    object-fit: cover;
    margin-bottom: 1.25rem;
    border: 1px solid var(--border);
    display: block;
}

.project-img--placeholder {
    width: 100%;
    height: 160px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    background: var(--surface);
    border: 1px solid var(--border);
    margin-bottom: 1.25rem;
}

/* MOBILE */
@media (max-width: 768px) {
    nav { padding: 1.2rem 1.5rem; }
    .nav-links { gap: 1.5rem; }
    section { padding: 6rem 1.5rem; }
    #hero { grid-template-columns: 1fr; padding-top: 8rem; }
    .hero-terminal { display: none; }
    .projects-grid { grid-template-columns: 1fr; }
    footer { flex-direction: column; gap: 0.5rem; text-align: center; }
}

/* GRID BG */
.grid-bg {
    position: absolute; inset: 0;
    background-image:
            linear-gradient(var(--border) 1px, transparent 1px),
            linear-gradient(90deg, var(--border) 1px, transparent 1px);
    background-size: 60px 60px;
    opacity: 0.3;
    pointer-events: none;
}

/* HIGHLIGHT DOT */
.accent-dot {
    display: inline-block;
    width: 8px; height: 8px;
    border-radius: 50%;
    background: var(--accent);
    margin-right: 0.5rem;
    animation: pulse 2s infinite;
}
@keyframes pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(127,255,110,0.4); }
    50% { box-shadow: 0 0 0 8px rgba(127,255,110,0); }
}