:root {
    --bg: #05070d;
    --bg-elev: #0b1020;
    --bg-card: rgba(15, 23, 42, 0.55);
    --border: rgba(96, 165, 250, 0.12);
    --border-strong: rgba(96, 165, 250, 0.28);

    --text: #e5ecf7;
    --text-muted: #94a3b8;
    --text-dim: #64748b;

    --accent: #3b82f6;
    --accent-bright: #60a5fa;
    --accent-glow: rgba(59, 130, 246, 0.35);

    --radius: 14px;
    --radius-sm: 8px;
    --maxw: 1080px;

    --font-sans: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', ui-monospace, Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    margin: 0;
    min-height: 100vh;
    font-family: var(--font-sans);
    font-size: clamp(0.95rem, 0.9rem + 0.2vw, 1.05rem);
    line-height: 1.65;
    color: var(--text);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

.bg-wrap {
    position: fixed;
    inset: 0;
    overflow: hidden;
    z-index: -2;
    background: var(--bg);
    pointer-events: none;
}
.bg-image {
    position: absolute;
    top: 0;
    left: 50%;
    width: max(100%, calc(100vh * 768 / 1376));
    height: auto;
    max-width: none;
    transform: translate3d(-50%, 0, 0);
    will-change: transform;
}
.bg-overlay {
    position: absolute;
    inset: 0;
    pointer-events: none;
    background:
        radial-gradient(ellipse 72% 62% at 50% 30%, rgba(5, 7, 13, 0.3) 0%, rgba(5, 7, 13, 0.72) 80%, rgba(5, 7, 13, 0.9) 100%),
        linear-gradient(180deg, rgba(5, 7, 13, 0.35) 0%, rgba(5, 7, 13, 0.45) 55%, rgba(5, 7, 13, 0.8) 100%),
        linear-gradient(135deg, rgba(37, 99, 235, 0.3) 0%, rgba(59, 130, 246, 0.18) 100%);
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background-color: transparent;
    border-bottom: 1px solid transparent;
    transition: background-color 0.25s ease, backdrop-filter 0.25s ease, border-color 0.25s ease;
}
.site-header.scrolled {
    background-color: rgba(5, 7, 13, 0.72);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom-color: var(--border);
}
.site-header-inner {
    max-width: var(--maxw);
    margin: 0 auto;
    padding: clamp(1.25rem, 2vw, 2rem) clamp(1.25rem, 4vw, 2.5rem);
    display: flex;
    flex-wrap: wrap;
    row-gap: 0.5rem;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    transition: padding 0.2s ease;
}
.site-header.scrolled .site-header-inner {
    padding-top: 0.6rem;
    padding-bottom: 0.6rem;
}
.site-header.scrolled .logo { font-size: 0.92rem; }

.logo {
    font-family: var(--font-mono);
    font-weight: 600;
    font-size: 1rem;
    color: var(--text);
    text-decoration: none;
    letter-spacing: -0.02em;
}
.logo span { color: var(--accent-bright); }

.nav {
    display: none;
    flex-wrap: nowrap;
    gap: clamp(0.9rem, 2.5vw, 2rem);
    justify-content: center;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    order: 99;
    flex-basis: 100%;
}
.nav::-webkit-scrollbar { display: none; }
.nav a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.925rem;
    transition: color 0.2s ease;
    position: relative;
    flex-shrink: 0;
    white-space: nowrap;
}
.nav a:hover { color: var(--accent-bright); }
.nav a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -4px;
    width: 0;
    height: 1px;
    background: var(--accent-bright);
    transition: width 0.2s ease;
}
.nav a:hover::after { width: 100%; }

.nav a.nav-omg {
    color: #f6a066;
    text-shadow: 0 0 16px rgba(232, 115, 45, 0.35);
}
.nav a.nav-omg:hover { color: #fbbf24; }
.nav a.nav-omg::after { background: #f6a066; }

.header-right {
    display: flex;
    align-items: center;
    gap: clamp(0.75rem, 2vw, 1.5rem);
}

.nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    padding: 0;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: var(--bg-card);
    color: var(--text-muted);
    cursor: pointer;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}
.nav-toggle:hover {
    color: var(--accent-bright);
    border-color: var(--border-strong);
}
.nav-toggle .icon-close { display: none; }
.site-header.nav-open .nav-toggle .icon-open { display: none; }
.site-header.nav-open .nav-toggle .icon-close { display: block; }
.site-header.nav-open .nav-toggle {
    color: var(--accent-bright);
    border-color: var(--border-strong);
}

@media (max-width: 719.98px) {
    .site-header.nav-open .nav { display: flex; }
    .site-header.nav-open {
        background-color: rgba(5, 7, 13, 0.72);
        backdrop-filter: blur(14px);
        -webkit-backdrop-filter: blur(14px);
        border-bottom-color: var(--border);
    }
}
@media (min-width: 720px) {
    .nav {
        display: flex;
        order: 0;
        flex-basis: auto;
        flex: 0 1 auto;
    }
    .nav-toggle { display: none; }
}

.lang-switch {
    display: inline-flex;
    gap: 2px;
    padding: 2px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: var(--bg-card);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}
.lang-switch button {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 500;
    padding: 0.3rem 0.7rem;
    border: none;
    border-radius: 999px;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    transition: color 0.2s ease, background 0.2s ease;
    letter-spacing: 0.04em;
}
.lang-switch button:hover { color: var(--text); }
.lang-switch button.active {
    background: var(--accent);
    color: white;
}

main {
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 0 clamp(1.25rem, 4vw, 2.5rem);
}

.hero {
    padding: clamp(4rem, 10vw, 8rem) 0 clamp(3rem, 6vw, 5rem);
}

.eyebrow {
    font-family: var(--font-mono);
    color: var(--accent-bright);
    font-size: 0.875rem;
    margin: 0 0 1rem;
    letter-spacing: 0.02em;
}

.hero h1 {
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 700;
    letter-spacing: -0.04em;
    line-height: 1;
    margin: 0 0 1.5rem;
    background: linear-gradient(135deg, #ffffff 0%, #93c5fd 50%, #3b82f6 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.tagline {
    font-size: clamp(1.1rem, 1rem + 0.6vw, 1.4rem);
    color: var(--text-muted);
    max-width: 38ch;
    margin: 0 0 2.5rem;
    line-height: 1.5;
}
.tagline .accent {
    display: block;
    color: var(--text-dim);
    font-size: 0.9em;
    margin-top: 0.5rem;
}

.cta-row {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    border-radius: var(--radius-sm);
    font-size: 0.925rem;
    font-weight: 500;
    text-decoration: none;
    border: 1px solid transparent;
    transition: transform 0.15s ease, background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
    cursor: pointer;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn-primary {
    background: linear-gradient(135deg, var(--accent) 0%, #2563eb 100%);
    color: white;
    box-shadow: 0 0 0 1px rgba(59, 130, 246, 0.4), 0 8px 24px -8px var(--accent-glow);
}
.btn-primary:hover {
    box-shadow: 0 0 0 1px rgba(96, 165, 250, 0.6), 0 12px 32px -8px var(--accent-glow);
}

.btn-secondary {
    background: rgba(59, 130, 246, 0.08);
    color: var(--accent-bright);
    border-color: var(--border-strong);
}
.btn-secondary:hover {
    background: rgba(59, 130, 246, 0.14);
    border-color: var(--accent);
}

.btn-ghost {
    color: var(--text-muted);
    background: transparent;
}
.btn-ghost:hover { color: var(--text); }

.section {
    padding: clamp(3rem, 6vw, 5rem) 0;
    border-top: 1px solid var(--border);
    scroll-margin-top: 4.5rem;
}

.section h2 {
    font-size: clamp(1.5rem, 1.2rem + 1.2vw, 2rem);
    font-weight: 600;
    letter-spacing: -0.02em;
    margin: 0 0 2rem;
    display: flex;
    align-items: baseline;
    gap: 0.75rem;
}
.section-num {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--accent-bright);
    font-weight: 400;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    align-items: start;
}
@media (min-width: 720px) {
    .about-grid {
        grid-template-columns: auto 1fr;
        gap: 3rem;
    }
}

.about-portrait {
    position: relative;
    width: clamp(140px, 28vw, 220px);
    aspect-ratio: 1 / 1;
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border-strong);
    box-shadow: 0 16px 40px -16px var(--accent-glow);
    background: var(--bg-card);
}
.about-portrait::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: linear-gradient(135deg, transparent 60%, rgba(59, 130, 246, 0.15) 100%);
    pointer-events: none;
}
.about-portrait img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.about-body {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    max-width: 60ch;
}

.bio {
    font-size: clamp(1rem, 0.95rem + 0.25vw, 1.15rem);
    line-height: 1.7;
    color: var(--text);
    margin: 0;
}


.category {
    --cat: var(--accent);
    --cat-bright: var(--accent-bright);
    --cat-glow: var(--accent-glow);
    --cat-soft: rgba(59, 130, 246, 0.08);
    margin-bottom: 3rem;
}
.category:last-child { margin-bottom: 0; }

.category--coding {
    --cat: #3b82f6;
    --cat-bright: #60a5fa;
    --cat-glow: rgba(59, 130, 246, 0.35);
    --cat-soft: rgba(59, 130, 246, 0.08);
}
.category--diy {
    --cat: #06b6d4;
    --cat-bright: #22d3ee;
    --cat-glow: rgba(6, 182, 212, 0.30);
    --cat-soft: rgba(6, 182, 212, 0.08);
}
.category--music {
    --cat: #8b5cf6;
    --cat-bright: #a78bfa;
    --cat-glow: rgba(139, 92, 246, 0.30);
    --cat-soft: rgba(139, 92, 246, 0.08);
}

.category-head {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.25rem;
}
.category-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: var(--radius-sm);
    background: var(--cat-soft);
    border: 1px solid rgba(255, 255, 255, 0.06);
    color: var(--cat-bright);
    box-shadow: 0 0 0 1px var(--cat-soft), 0 6px 20px -10px var(--cat-glow);
}
.category-title {
    font-size: 1.1rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    margin: 0;
    color: var(--text);
}
.category-line {
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, var(--cat-soft) 0%, transparent 100%);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.25rem;
}

.card {
    --card-accent: var(--cat, var(--accent));
    --card-accent-bright: var(--cat-bright, var(--accent-bright));
    --card-accent-soft: var(--cat-soft, rgba(59, 130, 246, 0.08));
    --card-accent-glow: var(--cat-glow, var(--accent-glow));

    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    overflow: hidden;
}
.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--card-accent), transparent);
    opacity: 0.5;
    transition: opacity 0.2s ease;
}
.card:hover {
    transform: translateY(-3px);
    border-color: var(--card-accent);
    box-shadow: 0 12px 32px -12px var(--card-accent-glow);
}
.card:hover::before { opacity: 1; }
.card header {
    display: flex;
    justify-content: flex-start;
    align-items: baseline;
    flex-wrap: wrap;
    gap: 0.5rem;
}
.card h3 {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}
.card p {
    margin: 0;
    color: var(--text-muted);
    font-size: 0.925rem;
    line-height: 1.6;
    flex: 1;
}
.card footer {
    display: flex;
    gap: 1rem;
    margin-top: 0.5rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border);
}
.card footer a {
    color: var(--card-accent-bright);
    text-decoration: none;
    font-size: 0.875rem;
    transition: opacity 0.15s ease;
}
.card footer a:hover { opacity: 0.8; }

.card-note {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-dim);
    letter-spacing: 0.02em;
}

.projects-grid .card:only-child {
    max-width: 520px;
}

.card--music.card--highlighted {
    --card-accent: #e8732d;
    --card-accent-bright: #f6a066;
    --card-accent-soft: rgba(232, 115, 45, 0.12);
    --card-accent-glow: rgba(232, 115, 45, 0.32);
}

.card--highlighted {
    border-color: var(--card-accent);
    background:
        linear-gradient(180deg, var(--card-accent-soft) 0%, transparent 55%),
        var(--bg-card);
    box-shadow:
        0 0 0 1px var(--card-accent),
        0 18px 50px -14px var(--card-accent-glow),
        0 0 80px -24px var(--card-accent-glow);
    transform: translateY(-2px);
}
.card--highlighted::before {
    opacity: 1;
    height: 3px;
    background: linear-gradient(90deg, var(--card-accent-bright), var(--card-accent), var(--card-accent-bright));
    background-size: 200% 100%;
    animation: highlight-sweep 4s linear infinite;
}
.card--highlighted:hover {
    transform: translateY(-6px);
    box-shadow:
        0 0 0 1px var(--card-accent-bright),
        0 24px 60px -16px var(--card-accent-glow),
        0 0 100px -20px var(--card-accent-glow);
}
@keyframes highlight-sweep {
    0%   { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.card-head-stacked,
.card--music > header,
.card--coding > header {
    flex-direction: column;
    align-items: flex-start !important;
    gap: 0.5rem;
}
.card--music > header .tag:not(.tag--live)::before,
.card--coding > header .tag:not(.tag--live)::before {
    content: none;
}

.tag {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--card-accent-bright);
    white-space: nowrap;
}
.tag::before {
    content: '·';
    margin-right: 0.4rem;
    color: var(--text-dim);
}

.tag--live {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    background: var(--card-accent);
    color: #ffd9c2;
    border: 1px solid var(--card-accent);
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 0.4rem 0.95rem;
    box-shadow: 0 0 24px -4px var(--card-accent-glow);
}
.tag--live::before {
    content: '';
    flex: 0 0 auto;
    width: 7px;
    height: 7px;
    margin-right: 0;
    border-radius: 50%;
    background: #ffd9c2;
    box-shadow: 0 0 8px #ffd9c2;
    transform: scale(1);
    transform-origin: center;
    animation: live-pulse 1.4s ease-in-out infinite;
}
@keyframes live-pulse {
    0%, 100% { transform: scale(1);   opacity: 1;   }
    50%      { transform: scale(1.5); opacity: 0.55;}
}
@media (prefers-reduced-motion: reduce) {
    .tag--live::before { animation: none; }
    .card--highlighted::before { animation: none; }
}

.card-skills {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
}
.skill {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    padding: 0.18rem 0.55rem;
    border-radius: 999px;
    background: var(--card-accent-soft);
    border: 1px solid var(--border);
    color: var(--text-muted);
    white-space: nowrap;
}

.card--active .tag::after {
    content: '';
    display: inline-block;
    width: 6px;
    height: 6px;
    margin-left: 0.5rem;
    border-radius: 50%;
    background: var(--card-accent-bright);
    box-shadow: 0 0 6px var(--card-accent-bright);
    vertical-align: middle;
    animation: live-pulse 1.4s ease-in-out infinite;
}
@media (prefers-reduced-motion: reduce) {
    .card--active .tag::after { animation: none; }
}

.section-contact { text-align: left; }

.contact-lead {
    color: var(--text-muted);
    max-width: 50ch;
    margin: 0 0 2rem;
}

.contact-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 0.75rem;
}

.contact-link {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    padding: 1.25rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    text-decoration: none;
    transition: border-color 0.2s ease, transform 0.2s ease, background 0.2s ease;
}
.contact-link:hover {
    border-color: var(--border-strong);
    transform: translateY(-2px);
    background: rgba(59, 130, 246, 0.06);
}
.contact-label {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}
.contact-value {
    color: var(--accent-bright);
    font-size: 1rem;
    font-weight: 500;
}

.site-footer {
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 2rem clamp(1.25rem, 4vw, 2.5rem) 3rem;
    border-top: 1px solid var(--border);
    margin-top: 3rem;
}
.site-footer p {
    color: var(--text-dim);
    font-size: 0.85rem;
    margin: 0;
    font-family: var(--font-mono);
}

@media (max-width: 540px) {
    .nav { gap: 1rem; }
    .nav a { font-size: 0.85rem; }
    .cta-row { flex-direction: column; align-items: stretch; }
    .btn { justify-content: center; }
    .header-right { gap: 0.6rem; }
    .lang-switch button { font-size: 0.7rem; padding: 0.25rem 0.55rem; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after {
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
    }
}

::selection {
    background: rgba(59, 130, 246, 0.35);
    color: white;
}