/* ═══════════════════════════════════════════
   TIRJOK.SIGNAL — Design System
   Palette: ink + electric lime (dark) / warm paper + olive (light)
   Type: Space Grotesk (display) · Inter (body) · JetBrains Mono (data)
   ═══════════════════════════════════════════ */

:root {
    --bg:          #07080c;
    --bg-elev:     #0d0f16;
    --bg-surface:  #12141d;
    --text:        #ecebe4;
    --text-sec:    #9d9ca6;
    --text-muted:  #56555f;
    --accent:      #c8f04b;
    --accent-ink:  #0b0d04;
    --accent-dim:  rgba(200, 240, 75, 0.16);
    --accent-faint:rgba(200, 240, 75, 0.05);
    --violet:      #8b7cf6;
    --rule:        rgba(236, 235, 228, 0.12);
    --rule-strong: rgba(236, 235, 228, 0.28);

    --font-display: 'Space Grotesk', system-ui, sans-serif;
    --font-body:    'Inter', system-ui, sans-serif;
    --font-mono:    'JetBrains Mono', 'Fira Code', monospace;

    --sp-xs: 0.25rem;
    --sp-sm: 0.5rem;
    --sp-md: 1rem;
    --sp-lg: 1.5rem;
    --sp-xl: 2rem;
    --sp-2xl: 3rem;
    --sp-3xl: 4.5rem;
    --sp-4xl: 7rem;

    --maxw: 1100px;
    --gutter: clamp(1.25rem, 4vw, 2.5rem);
    --ease: cubic-bezier(0.22, 1, 0.36, 1);
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="light"] {
    --bg:          #f2efe8;
    --bg-elev:     #faf8f2;
    --bg-surface:  #e9e5da;
    --text:        #16171c;
    --text-sec:    #4d4c55;
    --text-muted:  #8e8d96;
    --accent:      #4d7c0f;
    --accent-ink:  #f6ffe0;
    --accent-dim:  rgba(77, 124, 15, 0.14);
    --accent-faint:rgba(77, 124, 15, 0.05);
    --violet:      #6d5ae0;
    --rule:        rgba(22, 23, 28, 0.14);
    --rule-strong: rgba(22, 23, 28, 0.32);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 5rem;
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
    border-radius: 2px;
}

.sr-only {
    position: absolute;
    width: 1px; height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
}

.skip-link {
    position: fixed;
    top: -100%;
    left: var(--gutter);
    z-index: 200;
    padding: 0.6rem 1.2rem;
    background: var(--accent);
    color: var(--accent-ink);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    border-radius: 0 0 4px 4px;
    transition: top 0.2s;
}
.skip-link:focus { top: 0; }

/* ═══════════════════════════════════════════
   FIXED FX LAYER
   ═══════════════════════════════════════════ */
#fx {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
}

main, .footer { position: relative; z-index: 1; }

.grain {
    position: fixed;
    inset: 0;
    z-index: 80;
    pointer-events: none;
    opacity: 0.05;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
[data-theme="light"] .grain { opacity: 0.07; mix-blend-mode: multiply; }

/* Custom cursor (pointer:fine only — enabled by JS) */
.cursor {
    position: fixed;
    top: 0; left: 0;
    z-index: 90;
    pointer-events: none;
    display: none;
}
.cursor.is-on { display: block; }
.cursor__dot,
.cursor__ring {
    position: absolute;
    top: 0; left: 0;
    border-radius: 50%;
    transform: translate(-50%, -50%);
}
.cursor__dot {
    width: 6px; height: 6px;
    background: var(--accent);
}
.cursor__ring {
    width: 34px; height: 34px;
    border: 1px solid var(--accent);
    opacity: 0.35;
    transition: width 0.25s var(--ease), height 0.25s var(--ease), opacity 0.25s;
}
.cursor.is-hover .cursor__ring {
    width: 54px; height: 54px;
    opacity: 0.6;
}

/* Scroll progress */
.progress {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: 2px;
    z-index: 60;
    pointer-events: none;
}
#progress-bar {
    display: block;
    height: 100%;
    background: var(--accent);
    transform: scaleX(0);
    transform-origin: left;
}


/* ═══════════════════════════════════════════
   BOOT OVERLAY — instrument powers on
   ═══════════════════════════════════════════ */
.boot {
    position: fixed;
    inset: 0;
    z-index: 100;
    background: var(--bg);
    display: grid;
    place-items: center;
    clip-path: inset(0 0 0 0);
    transition: clip-path 0.7s var(--ease);
}
.boot.is-done {
    clip-path: inset(0 0 100% 0);
    pointer-events: none;
}
.boot__inner {
    display: grid;
    justify-items: start;
    gap: 0.9rem;
    width: 220px;
}
.boot__label {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.28em;
    color: var(--text);
}
.boot__bar {
    width: 100%;
    height: 2px;
    background: var(--rule);
    overflow: hidden;
}
#boot-fill {
    display: block;
    height: 100%;
    background: var(--accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.9s var(--ease);
}
.boot__status {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    letter-spacing: 0.22em;
    color: var(--text-muted);
}

/* ═══════════════════════════════════════════
   TOPBAR
   ═══════════════════════════════════════════ */
.topbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 50;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--sp-lg);
    padding: 0.9rem var(--gutter);
    transition: background 0.35s, border-color 0.35s;
    border-bottom: 1px solid transparent;
}
.topbar.is-scrolled {
    background: color-mix(in srgb, var(--bg) 72%, transparent);
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
    border-bottom-color: var(--rule);
}
.topbar__brand {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 0.95rem;
    letter-spacing: 0.22em;
    display: inline-flex;
    align-items: center;
}
.topbar__dot {
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--accent);
    margin-left: 8px;
    animation: pulse 2.4s ease-in-out infinite;
}
.topbar__nav {
    display: flex;
    gap: clamp(1.25rem, 3vw, 2.25rem);
}
.topbar__nav a {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--text-sec);
    position: relative;
    padding: 0.3rem 0;
    transition: color 0.25s;
}
.topbar__nav a::after {
    content: '';
    position: absolute;
    left: 0; right: 0; bottom: 0;
    height: 1px;
    background: var(--accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.35s var(--ease);
}
.topbar__nav a:hover { color: var(--text); }
.topbar__nav a:hover::after { transform: scaleX(1); }

/* Theme toggle */
.theme-toggle {
    position: relative;
    width: 38px; height: 38px;
    border-radius: 50%;
    border: 1px solid var(--rule-strong);
    background: var(--bg-elev);
    display: grid;
    place-items: center;
    transition: border-color 0.3s, transform 0.3s var(--ease);
    flex-shrink: 0;
}
.theme-toggle:hover { border-color: var(--accent); transform: rotate(15deg); }
.theme-toggle svg {
    width: 16px; height: 16px;
    position: absolute;
    transition: opacity 0.35s, transform 0.45s var(--ease);
}
.theme-toggle .icon-sun  { opacity: 0; transform: rotate(-90deg) scale(0.7); color: var(--text); }
.theme-toggle .icon-moon { opacity: 1; transform: rotate(0) scale(1); color: var(--accent); }
[data-theme="light"] .theme-toggle .icon-sun  { opacity: 1; transform: rotate(0) scale(1); color: var(--accent); }
[data-theme="light"] .theme-toggle .icon-moon { opacity: 0; transform: rotate(90deg) scale(0.7); }

/* ═══════════════════════════════════════════
   LAYOUT PRIMITIVES
   ═══════════════════════════════════════════ */
.container {
    width: 100%;
    max-width: var(--maxw);
    margin-inline: auto;
    padding-inline: var(--gutter);
}

.section { padding-block: var(--sp-4xl); }

.sec-head {
    display: flex;
    align-items: baseline;
    gap: 1.25rem;
    margin-bottom: var(--sp-3xl);
}
.sec-head__num {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.2em;
    color: var(--accent);
}
.sec-head__label {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 1.05rem;
    letter-spacing: 0.26em;
    text-transform: uppercase;
}
.sec-head__rule {
    flex: 1;
    height: 1px;
    background: var(--rule-strong);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 1.2s var(--ease) 0.15s;
}
.sec-head.in .sec-head__rule { transform: scaleX(1); }
.sec-head__note {
    font-family: var(--font-mono);
    font-size: 0.62rem;
    letter-spacing: 0.18em;
    color: var(--text-muted);
    white-space: nowrap;
}

/* Reveal system */
[data-reveal] {
    opacity: 0;
    transform: translateY(26px);
    transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
    transition-delay: calc(var(--i, 0) * 70ms);
}
[data-reveal].in {
    opacity: 1;
    transform: none;
}

/* ═══════════════════════════════════════════
   HERO — the signal powers on
   ═══════════════════════════════════════════ */
.hero {
    position: relative;
    min-height: 120svh;
    display: flex;
    align-items: flex-end;
    overflow: hidden;
}
#scope {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}
.hero__inner {
    position: relative;
    z-index: 1;
    padding-top: 22vh;
    padding-bottom: 16vh;
}
.hero__eyebrow {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    letter-spacing: 0.22em;
    color: var(--text-sec);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.75rem;
}
.hero__dot {
    width: 8px; height: 8px;
    border-radius: 50%;
    background: var(--accent);
    animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse {
    0%, 100% { opacity: 1; box-shadow: 0 0 0 0 var(--accent-dim); }
    50% { opacity: 0.55; box-shadow: 0 0 0 7px transparent; }
}
.hero__name {
    font-family: var(--font-display);
    font-weight: 500;
    font-size: clamp(3.2rem, 11.5vw, 9.5rem);
    line-height: 0.98;
    letter-spacing: -0.03em;
}
.hero__line {
    display: block;
    overflow: hidden;
    padding-bottom: 0.06em;
}
.hero__line > span {
    display: block;
    transform: translateY(112%);
    transition: transform 1.1s var(--ease-out);
}
.hero__line:nth-child(2) > span { transition-delay: 0.14s; }
.hero.is-in .hero__line > span { transform: translateY(0); }
/* second line: blueprint outline */
.hero__line:nth-child(2) > span {
    color: transparent;
    -webkit-text-stroke: 1.5px var(--text);
}
.hero__role {
    font-family: var(--font-display);
    font-weight: 300;
    font-size: clamp(1rem, 2.3vw, 1.45rem);
    color: var(--text-sec);
    margin-top: 1.6rem;
    letter-spacing: 0.01em;
}
.hero__status {
    margin-top: 1.1rem;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--accent);
    display: flex;
    align-items: center;
    gap: 0.7rem;
}
.hero__pulse {
    width: 8px; height: 8px;
    border-radius: 50%;
    background: var(--accent);
    animation: pulse 1.8s ease-in-out infinite;
}
.hero__stats {
    display: flex;
    gap: clamp(2rem, 5vw, 3.5rem);
    margin-top: 2.75rem;
}
.hero__stat {
    display: grid;
    gap: 0.3rem;
    padding-left: 1rem;
    border-left: 1px solid var(--rule-strong);
}
.hero__stat-num {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: clamp(1.9rem, 4vw, 3rem);
    line-height: 1;
    letter-spacing: -0.02em;
    font-variant-numeric: tabular-nums;
}
.hero__stat-label {
    font-family: var(--font-mono);
    font-size: 0.62rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--text-muted);
}
.hero__cta {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 2.75rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    padding: 0.95em 1.9em;
    border-radius: 999px;
    border: 1px solid var(--rule-strong);
    transition: transform 0.3s var(--ease), border-color 0.3s, color 0.3s, background 0.3s, box-shadow 0.3s;
    will-change: transform;
}
.btn--solid {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--accent-ink);
}
.btn--solid:hover {
    box-shadow: 0 0 0 4px var(--accent-dim), 0 8px 30px var(--accent-dim);
}
.btn--ghost { color: var(--text-sec); }
.btn--ghost:hover { border-color: var(--accent); color: var(--accent); }

.hero__scroll {
    position: absolute;
    bottom: 2.2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.6rem;
    z-index: 1;
}
.hero__scroll span {
    font-family: var(--font-mono);
    font-size: 0.58rem;
    letter-spacing: 0.34em;
    color: var(--text-muted);
}
.hero__scroll i {
    width: 1px;
    height: 44px;
    background: var(--rule-strong);
    position: relative;
    overflow: hidden;
}
.hero__scroll i::after {
    content: '';
    position: absolute;
    top: -40%;
    left: 0;
    width: 100%;
    height: 40%;
    background: var(--accent);
    animation: scroll-dash 2.2s var(--ease) infinite;
}
@keyframes scroll-dash {
    0% { top: -40%; }
    70%, 100% { top: 110%; }
}

/* ═══════════════════════════════════════════
   01 — IDENTITY
   ═══════════════════════════════════════════ */
.identity__grid {
    display: grid;
    grid-template-columns: 1.45fr 1fr;
    gap: clamp(2rem, 5vw, 4.5rem);
    align-items: start;
}
.identity__text {
    font-family: var(--font-display);
    font-weight: 300;
    font-size: clamp(1.35rem, 2.6vw, 2.05rem);
    line-height: 1.5;
    letter-spacing: -0.01em;
    color: var(--text-sec);
}
.identity__text .hl {
    font-style: normal;
    font-weight: 500;
    color: var(--accent);
}
.identity__portrait {
    position: relative;
    border: 1px solid var(--rule);
    background: var(--bg-elev);
    padding: 0.8rem;
    overflow: hidden;
}
.identity__portrait::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 34%;
    height: 2px;
    background: var(--accent);
}
.identity__portrait img {
    width: 100%;
    aspect-ratio: 4 / 5;
    object-fit: cover;
    filter: saturate(0.85) contrast(1.04);
    transition: filter 0.6s var(--ease);
}
.identity__portrait:hover img { filter: saturate(1.05) contrast(1.06); }
/* scanline sweep */
.identity__portrait::after {
    content: '';
    position: absolute;
    left: 0; right: 0;
    top: -15%;
    height: 14%;
    background: linear-gradient(180deg, transparent, var(--accent-dim) 55%, transparent);
    animation: scan 5.5s linear infinite;
    pointer-events: none;
}
@keyframes scan {
    0% { top: -15%; }
    60%, 100% { top: 110%; }
}
.identity__portrait figcaption {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    letter-spacing: 0.2em;
    color: var(--text-muted);
    padding: 0.8rem 0.2rem 0.2rem;
}

/* ═══════════════════════════════════════════
   02 — CAREER — expanding instrument rows
   ═══════════════════════════════════════════ */
.career__list {
    border-top: 1px solid var(--rule-strong);
}
.career__row {
    border-bottom: 1px solid var(--rule);
}
.career__head {
    width: 100%;
    display: grid;
    grid-template-areas: "idx role meta dates plus";
    grid-template-columns: 3.25rem minmax(0, 1.3fr) minmax(0, 1fr) auto 1.5rem;
    gap: 0.5rem 1.5rem;
    align-items: center;
    text-align: left;
    padding: 1.5rem 0.5rem;
    transition: background 0.35s;
}
.career__row:hover .career__head,
.career__row.is-open .career__head {
    background: var(--accent-faint);
}
.career__idx {
    grid-area: idx;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.14em;
    color: var(--text-muted);
    transition: color 0.3s;
}
.career__role {
    grid-area: role;
    font-family: var(--font-display);
    font-weight: 500;
    font-size: clamp(1.25rem, 2.8vw, 1.9rem);
    letter-spacing: -0.01em;
    line-height: 1.15;
    transition: transform 0.4s var(--ease), color 0.3s;
}
.career__meta {
    grid-area: meta;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.05em;
    color: var(--text-sec);
}
.career__dates {
    grid-area: dates;
    font-family: var(--font-mono);
    font-size: 0.68rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-muted);
    white-space: nowrap;
}
.career__row:hover .career__idx,
.career__row.is-open .career__idx { color: var(--accent); }
.career__row:hover .career__role,
.career__row.is-open .career__role { transform: translateX(8px); }

.career__plus {
    grid-area: plus;
    position: relative;
    width: 14px; height: 14px;
    justify-self: end;
}
.career__plus::before,
.career__plus::after {
    content: '';
    position: absolute;
    top: 50%; left: 50%;
    background: var(--text-sec);
    transition: transform 0.45s var(--ease), background 0.3s;
}
.career__plus::before { width: 14px; height: 1px; transform: translate(-50%, -50%); }
.career__plus::after  { width: 1px; height: 14px; transform: translate(-50%, -50%); }
.career__row:hover .career__plus::before,
.career__row:hover .career__plus::after,
.career__row.is-open .career__plus::before,
.career__row.is-open .career__plus::after {
    transform: translate(-50%, -50%) rotate(45deg);
    background: var(--accent);
}

/* Collapsible body — 0fr → 1fr */
.career__body {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows 0.55s var(--ease);
}
.career__row.is-open .career__body { grid-template-rows: 1fr; }
@media (hover: hover) and (pointer: fine) {
    .career__row:hover .career__body { grid-template-rows: 1fr; }
}
.career__body > ul {
    overflow: hidden;
    min-height: 0;
}
.career__points {
    padding: 0 0.5rem 1.9rem;
    padding-left: calc(3.25rem + 1.5rem + 0.5rem);
    display: grid;
    gap: 0.55rem;
}
.career__points li {
    position: relative;
    padding-left: 1.25rem;
    color: var(--text-sec);
    font-size: 0.95rem;
    line-height: 1.55;
    max-width: 62ch;
}
.career__points li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.72em;
    width: 6px;
    height: 1px;
    background: var(--accent);
}

/* ═══════════════════════════════════════════
   03 — STACK — dual marquee
   ═══════════════════════════════════════════ */
.stack { padding-bottom: var(--sp-3xl); }
.stack__marquee {
    display: grid;
    gap: 0.9rem;
    margin-top: 0.5rem;
    justify-items: center;
}
.marquee {
    position: relative;
    overflow: hidden;
}
.marquee::before,
.marquee::after {
    content: '';
    position: absolute;
    top: 0; bottom: 0;
    width: clamp(40px, 8vw, 90px);
    z-index: 1;
    pointer-events: none;
}
.marquee::before { left: 0; background: linear-gradient(90deg, var(--bg), transparent); }
.marquee::after  { right: 0; background: linear-gradient(270deg, var(--bg), transparent); }
.marquee__track {
    display: flex;
    width: max-content;
    animation: marquee 30s linear infinite;
}
.marquee--rev .marquee__track {
    animation-direction: reverse;
    animation-duration: 38s;
}
.marquee:hover .marquee__track { animation-play-state: paused; }
@keyframes marquee {
    to { transform: translateX(-50%); }
}
.chip {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-sec);
    border: 1px solid var(--rule-strong);
    background: var(--bg-elev);
    border-radius: 999px;
    padding: 0.7em 1.35em;
    margin-right: 0.75rem;
    white-space: nowrap;
}
.chip--focus {
    border-color: var(--accent-dim);
    color: var(--accent);
    background: var(--accent-faint);
}

/* ═══════════════════════════════════════════
   04 — BUILDS — stacked pinned panels
   ═══════════════════════════════════════════ */
.builds__stack {
    position: relative;
    padding-bottom: 4rem;
}
.build {
    position: sticky;
    top: calc(64px + 5vh);
    display: grid;
    grid-template-areas:
        "num tag"
        "num title"
        "num desc";
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-rows: auto 1fr auto;
    gap: 0.5rem clamp(1.5rem, 4vw, 3rem);
    align-items: start;
    min-height: 58vh;
    padding: clamp(1.5rem, 4vw, 3rem);
    background: var(--bg-elev);
    border: 1px solid var(--rule);
    margin-bottom: 2.5rem;
    overflow: hidden;
    transition: transform 0.5s var(--ease), opacity 0.5s, border-color 0.4s;
    will-change: transform;
}
.build::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 38%;
    height: 2px;
    background: var(--accent);
}
.build__num {
    grid-area: num;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(4rem, 11vw, 8.5rem);
    line-height: 0.9;
    color: transparent;
    -webkit-text-stroke: 1px var(--rule-strong);
    align-self: end;
}
.build__tag {
    grid-area: tag;
    justify-self: end;
    font-family: var(--font-mono);
    font-size: 0.68rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--accent);
    border: 1px solid var(--accent-dim);
    border-radius: 999px;
    padding: 0.55em 1.2em;
    background: var(--accent-faint);
}
.build__title {
    grid-area: title;
    font-family: var(--font-display);
    font-weight: 500;
    font-size: clamp(1.5rem, 3.4vw, 2.5rem);
    letter-spacing: -0.015em;
    line-height: 1.15;
    max-width: 24ch;
}
.build__desc {
    grid-area: desc;
    color: var(--text-sec);
    font-size: 0.98rem;
    line-height: 1.65;
    max-width: 58ch;
    margin-top: 0.75rem;
}
/* cards recede as the next one covers them (JS-driven) */
.build.is-covered {
    transform: scale(0.965);
    opacity: 0.55;
}

/* ═══════════════════════════════════════════
   05 — SOURCE — open source
   ═══════════════════════════════════════════ */
.source__list {
    border-top: 1px solid var(--rule-strong);
}
.source__row {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    gap: 0.5rem 2rem;
    align-items: baseline;
    padding: 1.15rem 0.5rem;
    border-bottom: 1px solid var(--rule);
    transition: background 0.3s, padding-left 0.35s var(--ease);
}
.source__row:hover {
    background: var(--accent-faint);
    padding-left: 1.1rem;
}
.source__row a {
    font-family: var(--font-mono);
    font-size: 0.82rem;
    letter-spacing: 0.02em;
    color: var(--text);
    transition: color 0.25s;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.source__row a:hover { color: var(--accent); }
.source__desc {
    font-size: 0.88rem;
    color: var(--text-muted);
}

/* ═══════════════════════════════════════════
   06 — EDUCATION
   ═══════════════════════════════════════════ */
.education__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
}
.edu {
    position: relative;
    border: 1px solid var(--rule);
    background: var(--bg-elev);
    padding: clamp(1.5rem, 3vw, 2.25rem);
    overflow: hidden;
    transition: border-color 0.35s, transform 0.35s var(--ease);
}
.edu::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 32%;
    height: 2px;
    background: var(--accent);
}
.edu:hover {
    border-color: var(--rule-strong);
    transform: translateY(-4px);
}
.edu__dates {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--text-muted);
}
.edu__degree {
    font-family: var(--font-display);
    font-weight: 500;
    font-size: clamp(1.2rem, 2.4vw, 1.55rem);
    letter-spacing: -0.01em;
    margin: 0.85rem 0 0.4rem;
}
.edu__inst {
    color: var(--text-sec);
    font-size: 0.95rem;
}

/* ═══════════════════════════════════════════
   07 — CONTACT
   ═══════════════════════════════════════════ */
.contact { padding-bottom: var(--sp-5xl, 9rem); }
.contact__big {
    font-family: var(--font-display);
    font-weight: 300;
    font-size: clamp(2.1rem, 6vw, 4.4rem);
    line-height: 1.08;
    letter-spacing: -0.025em;
}
.contact__big em {
    font-style: normal;
    font-weight: 500;
    color: var(--accent);
}
.contact__email {
    display: inline-flex;
    align-items: baseline;
    gap: 0.4em;
    margin-top: 2.25rem;
    font-family: var(--font-display);
    font-weight: 500;
    font-size: clamp(1.5rem, 5vw, 3.4rem);
    letter-spacing: -0.02em;
    color: var(--text);
    position: relative;
    width: fit-content;
}
.contact__email::after {
    content: '';
    position: absolute;
    left: 0; right: 0; bottom: -0.12em;
    height: 2px;
    background: var(--accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.5s var(--ease);
}
.contact__email:hover::after { transform: scaleX(1); }
.contact__arrow {
    color: var(--accent);
    font-size: 0.6em;
    display: inline-block;
    transition: transform 0.35s var(--ease);
}
.contact__email:hover .contact__arrow { transform: translate(0.15em, -0.15em); }
.contact__socials {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem 2.75rem;
    margin-top: 3.25rem;
}
.contact__socials a {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--text-sec);
    transition: color 0.25s;
}
.contact__socials a span {
    display: inline-block;
    color: var(--accent);
    transition: transform 0.35s var(--ease);
}
.contact__socials a:hover { color: var(--text); }
.contact__socials a:hover span { transform: translate(0.2em, -0.2em); }

/* ═══════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════ */
.footer {
    border-top: 1px solid var(--rule);
    padding: 1.75rem 0;
}
.footer__row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
    font-family: var(--font-mono);
    font-size: 0.66rem;
    letter-spacing: 0.14em;
    color: var(--text-muted);
}
.footer__sig { color: var(--accent); opacity: 0.8; }
.footer__top { color: var(--text-sec); transition: color 0.25s; }
.footer__top:hover { color: var(--accent); }

/* ═══════════════════════════════════════════
   REDUCED MOTION
   ═══════════════════════════════════════════ */
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        transition-delay: 0ms !important;
    }
    [data-reveal] { opacity: 1; transform: none; }
    .hero__line > span { transform: none; }
    .marquee__track { animation: none; }
    .identity__portrait::after { display: none; }
    .cursor { display: none !important; }
}

/* ═══════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════ */
@media (max-width: 900px) {
    .topbar__nav { display: none; }
    .identity__grid { grid-template-columns: 1fr; }
    .identity__portrait { max-width: 440px; }
    .career__head {
        grid-template-areas:
            "idx role plus"
            "idx meta dates";
        grid-template-columns: 2.5rem minmax(0, 1fr) 1.5rem;
        row-gap: 0.4rem;
    }
    .career__dates { justify-self: end; }
    .career__points { padding-left: 0.5rem; }
    .build {
        grid-template-areas:
            "num num"
            "tag tag"
            "title title"
            "desc desc";
        grid-template-columns: 1fr;
        min-height: 52vh;
    }
    .build__num { align-self: start; }
    .build__tag { justify-self: start; }
    .source__row {
        grid-template-columns: 1fr;
        gap: 0.3rem;
    }
    .education__grid { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
    .hero__stats { flex-wrap: wrap; gap: 1.25rem 2rem; }
    .hero__scroll { display: none; }
    .footer__row { justify-content: center; text-align: center; }
    .sec-head { flex-wrap: wrap; gap: 0.6rem 1rem; }
    .sec-head__note { display: none; }
}