/* ============================================================
   Utsav Khatiwada, portfolio "circuit board" theme
   Ported from the Claude design export (Home / Projects / Nepal POS)
   ============================================================ */

:root {
    --bg: #03100a;
    --bg-deep: #020503;
    --bg-term: #020a06;
    --bg-term-bar: #04120a;
    --panel: #05170e;
    --line: #1a5230;
    --border: #2c7a4b;
    --border-soft: #1d6b3c;
    --border-dark: #1d4d2b;
    --green: #39ff7a;
    --green-soft: #b6ffd0;
    --mint: #9fe8b8;
    --text: #e8fff0;
    --dim: #7fbf98;
    --dim2: #4f9e6b;
    --gold: #d9b44a;
    --prompt: #1f9e52;
    --prompt2: #2f8f55;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    margin: 0;
    background: var(--bg);
    font-family: 'JetBrains Mono', monospace;
    color: var(--text);
}

a { color: var(--green); }
a:hover { color: var(--green-soft); }

@keyframes blink { 0%, 49% { opacity: 1; } 50%, 100% { opacity: 0; } }
@keyframes scansweep { 0% { top: -14%; } 100% { top: 114%; } }
@keyframes flicker { 0%, 91%, 94%, 98%, 100% { opacity: 1; } 92% { opacity: 0.7; } 96% { opacity: 0.88; } }
@keyframes glitcha {
    0%, 88%, 100% { clip-path: inset(0 0 100% 0); transform: translate(0, 0); }
    89% { clip-path: inset(8% 0 58% 0); transform: translate(-5px, 0); }
    92% { clip-path: inset(62% 0 8% 0); transform: translate(5px, 0); }
    95% { clip-path: inset(35% 0 38% 0); transform: translate(-3px, 0); }
}
@keyframes glitchb {
    0%, 86%, 100% { clip-path: inset(0 0 100% 0); transform: translate(0, 0); }
    87% { clip-path: inset(48% 0 22% 0); transform: translate(4px, 0); }
    91% { clip-path: inset(12% 0 70% 0); transform: translate(-4px, 0); }
    96% { clip-path: inset(70% 0 5% 0); transform: translate(3px, 0); }
}
@keyframes typing { from { max-width: 0; } to { max-width: 100%; } }

/* ---------- page scaffolding ---------- */

.page {
    position: relative;
    background: var(--bg);
    overflow: hidden;
    min-height: 100vh;
}

.circuit-layer {
    position: absolute;
    inset: 0;
    z-index: 0;
    overflow: hidden;
}

.scanlines {
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: repeating-linear-gradient(0deg, rgba(0, 0, 0, 0.14) 0px, rgba(0, 0, 0, 0.14) 1px, transparent 1px, transparent 4px);
    z-index: 30;
}

.container {
    position: relative;
    z-index: 2;
    max-width: 1240px;
    margin: 0 auto;
}

.cursor {
    display: inline-block;
    width: 11px;
    height: 19px;
    background: var(--green);
    margin-left: 10px;
    vertical-align: middle;
    animation: blink 1s step-end infinite;
}

.section-label {
    color: var(--dim2);
    font-size: 14px;
    letter-spacing: 4px;
    margin-bottom: 18px;
}

/* ---------- boot overlay ---------- */

#boot {
    position: fixed;
    inset: 0;
    z-index: 100;
    background: var(--bg-deep);
    padding: 60px 70px;
    font-family: 'VT323', monospace;
    cursor: pointer;
    overflow: hidden;
    transition: transform 0.5s ease-in, opacity 0.55s ease-in;
    transform-origin: 50% 50%;
}

#boot.closing { transform: scaleY(0.005); opacity: 0; }
#boot.done { display: none; }

.boot-title {
    color: var(--green);
    font-size: 30px;
    letter-spacing: 2px;
    margin-bottom: 28px;
    text-shadow: 0 0 18px rgba(57, 255, 122, 0.6);
}

.boot-line { color: var(--mint); font-size: 25px; line-height: 1.5; white-space: pre; }

.boot-cursor {
    display: inline-block;
    width: 13px;
    height: 22px;
    background: var(--green);
    animation: blink 0.8s step-end infinite;
    margin-top: 10px;
}

.boot-skip {
    position: absolute;
    bottom: 36px;
    left: 70px;
    color: var(--prompt2);
    font-size: 19px;
    letter-spacing: 2px;
}

.boot-scanlines {
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: repeating-linear-gradient(0deg, rgba(0, 0, 0, 0.3) 0px, rgba(0, 0, 0, 0.3) 1px, transparent 1px, transparent 3px);
}

/* ---------- nav ---------- */

nav {
    position: sticky;
    top: 0;
    z-index: 20;
    display: flex;
    align-items: center;
    gap: 26px;
    padding: 14px 44px;
    background: rgba(3, 16, 10, 0.88);
    border-bottom: 1px solid var(--line);
    backdrop-filter: blur(6px);
}

.nav-brand {
    text-decoration: none;
    color: var(--gold);
    font-weight: 800;
    letter-spacing: 3px;
    font-size: 15px;
    white-space: nowrap;
}
.nav-brand:hover { color: var(--gold); }

.nav-spacer { flex: 1; }

.nav-links { display: flex; gap: 8px; flex-wrap: wrap; }

.nav-link {
    text-decoration: none;
    border: 1px solid var(--border);
    border-top: 3px solid var(--gold);
    background: var(--panel);
    color: var(--mint);
    padding: 7px 14px;
    font-size: 13px;
    letter-spacing: 2px;
    transition: box-shadow 0.2s, color 0.2s, border-color 0.2s;
}

.nav-link:hover {
    box-shadow: 0 0 16px rgba(57, 255, 122, 0.45);
    color: var(--text);
    border-color: var(--green);
    border-top-color: var(--gold);
}

.nav-progress-track {
    position: absolute;
    left: 0;
    right: 0;
    bottom: -3px;
    height: 3px;
    pointer-events: none;
}

#progress {
    width: 0%;
    height: 3px;
    background: linear-gradient(90deg, #155c31, var(--green));
    box-shadow: 0 0 12px rgba(57, 255, 122, 0.8);
}

/* ---------- hero ---------- */

.hero {
    position: relative;
    height: 660px;
    overflow: hidden;
    border-bottom: 1px solid var(--line);
    z-index: 1;
}

#matrix {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.5;
}

.hero-vignette {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at center, rgba(3, 16, 10, 0.2) 0%, rgba(3, 16, 10, 0.94) 80%);
}

.corner { position: absolute; width: 36px; height: 36px; }
.corner.tl { top: 26px; left: 26px; border-top: 2px solid var(--green); border-left: 2px solid var(--green); }
.corner.tr { top: 26px; right: 26px; border-top: 2px solid var(--green); border-right: 2px solid var(--green); }
.corner.bl { bottom: 26px; left: 26px; border-bottom: 2px solid var(--green); border-left: 2px solid var(--green); }
.corner.br { bottom: 26px; right: 26px; border-bottom: 2px solid var(--green); border-right: 2px solid var(--green); }

.scan-sweep {
    position: absolute;
    left: 0;
    right: 0;
    height: 100px;
    background: linear-gradient(180deg, transparent, rgba(57, 255, 122, 0.08), transparent);
    border-bottom: 1px solid rgba(57, 255, 122, 0.3);
    animation: scansweep 6s linear infinite;
    pointer-events: none;
}

.hero-inner {
    position: relative;
    z-index: 3;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    text-align: center;
    padding: 0 24px;
}

.prompt-line {
    font-family: 'Share Tech Mono', monospace;
    color: var(--prompt2);
    font-size: 16px;
    display: flex;
    gap: 10px;
    margin-bottom: 26px;
}

.prompt-line .user { color: var(--prompt); }

.typing {
    overflow: hidden;
    white-space: nowrap;
    display: inline-block;
    animation: typing 1.8s steps(26, end);
}

.glitch-wrap { position: relative; display: inline-block; }

.glitch-wrap h1 {
    margin: 0;
    color: var(--text);
    font-size: clamp(48px, 7vw, 96px);
    font-weight: 800;
    letter-spacing: 3px;
    line-height: 1;
}

.glitch-wrap h1.ga,
.glitch-wrap h1.gb {
    position: absolute;
    inset: 0;
    pointer-events: none;
}
.glitch-wrap h1.ga { color: var(--green-soft); animation: glitcha 4s steps(1) infinite; }
.glitch-wrap h1.gb { color: #0fa85a; animation: glitchb 4s steps(1) infinite; }

.hero-sub {
    color: var(--green);
    font-size: 19px;
    letter-spacing: 3px;
    margin-top: 22px;
}

.hero-buttons { display: flex; gap: 16px; margin-top: 46px; flex-wrap: wrap; justify-content: center; }

.btn {
    text-decoration: none;
    padding: 13px 26px;
    font-size: 15px;
    letter-spacing: 2px;
    transition: background 0.2s, color 0.2s, box-shadow 0.2s, border-color 0.2s;
}

.btn.primary {
    border: 1px solid var(--green);
    background: rgba(57, 255, 122, 0.08);
    color: var(--green);
}
.btn.primary:hover { background: var(--green); color: var(--bg); box-shadow: 0 0 26px rgba(57, 255, 122, 0.6); }

.btn.ghost { border: 1px solid var(--border); color: var(--mint); }
.btn.ghost:hover { border-color: var(--green); color: var(--text); box-shadow: 0 0 18px rgba(57, 255, 122, 0.35); }

/* ---------- main body ---------- */

.main {
    padding: 84px 40px 60px 40px;
    display: flex;
    flex-direction: column;
    gap: 84px;
}

/* ---------- about ---------- */

.about-grid {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 44px;
    align-items: start;
}

.portrait-wrap { position: relative; }

.portrait-wrap img {
    width: 210px;
    height: 210px;
    object-fit: cover;
    display: block;
    border: 1px solid var(--green);
    box-shadow: 0 0 34px rgba(57, 255, 122, 0.25);
    transition: box-shadow 0.3s, transform 0.3s;
}
.portrait-wrap img:hover { box-shadow: 0 0 54px rgba(57, 255, 122, 0.55); transform: scale(1.03); }

.portrait-wrap .pc { position: absolute; width: 14px; height: 14px; }
.portrait-wrap .pc.tl { top: -6px; left: -6px; border-top: 2px solid var(--green); border-left: 2px solid var(--green); }
.portrait-wrap .pc.tr { top: -6px; right: -6px; border-top: 2px solid var(--green); border-right: 2px solid var(--green); }
.portrait-wrap .pc.bl { bottom: -6px; left: -6px; border-bottom: 2px solid var(--green); border-left: 2px solid var(--green); }
.portrait-wrap .pc.br { bottom: -6px; right: -6px; border-bottom: 2px solid var(--green); border-right: 2px solid var(--green); }

.portrait-caption {
    text-align: center;
    color: var(--dim2);
    font-size: 12px;
    letter-spacing: 3px;
    margin-top: 12px;
}

/* ---------- terminal windows ---------- */

.term {
    background: var(--bg-term);
    border: 1px solid var(--border-soft);
    border-radius: 8px;
    overflow: hidden;
}

.term.flicker { animation: flicker 11s linear infinite; }

.term-bar {
    display: flex;
    align-items: center;
    gap: 9px;
    background: var(--bg-term-bar);
    padding: 10px 16px;
    border-bottom: 1px solid #123f1f;
}

.term-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--border-dark); flex: none; }
.term-dot.lit { background: var(--green); }

.term-title {
    color: var(--dim2);
    font-size: 13px;
    margin-left: 8px;
    font-family: 'Share Tech Mono', monospace;
}

.term-body {
    padding: 26px 30px;
    font-family: 'Share Tech Mono', monospace;
    font-size: 16px;
    line-height: 1.75;
}

.term-body .cmd { color: var(--prompt2); }
.term-body .cmd .user { color: var(--prompt); }
.term-body p { color: var(--mint); margin: 10px 0 22px 0; }
.term-body p:last-child { margin-bottom: 0; }

.term-body .cursor { width: 10px; height: 17px; margin-left: 8px; }

/* ---------- skills ---------- */

.skills-grid {
    padding: 26px 30px;
    font-family: 'Share Tech Mono', monospace;
    font-size: 15.5px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px 44px;
}

.skill-row {
    display: flex;
    gap: 14px;
    padding: 4px 10px;
    margin: -4px -10px;
    transition: background 0.2s;
}
.skill-row:hover { background: rgba(57, 255, 122, 0.08); }
.skill-key { color: var(--gold); width: 96px; flex: none; }
.skill-val { color: var(--mint); }

.skills-ls-cmd {
    display: none;
    padding: 26px 30px 0 30px;
    font-family: 'Share Tech Mono', monospace;
    font-size: 15.5px;
    color: var(--prompt2);
}
.skills-ls-cmd .user { color: var(--prompt); }

.skills-ls {
    display: none;
    padding: 14px 30px 26px 30px;
    font-family: 'Share Tech Mono', monospace;
    font-size: 15.5px;
    flex-wrap: wrap;
    gap: 10px 28px;
}

.ls-item { color: var(--green); }

.term.ls-active .skills-ls-cmd,
.term.ls-active .skills-ls { display: flex; }
.term.ls-active .skills-grid { display: none; }

/* ---------- experience ---------- */

.xp-list { display: flex; flex-direction: column; gap: 22px; }

.xp-card {
    position: relative;
    background: var(--panel);
    border: 1px solid var(--border);
    border-left: 4px solid var(--border);
    padding: 26px 30px;
    transition: box-shadow 0.25s, border-color 0.25s;
}
.xp-card.live { border-left-color: var(--green); }
.xp-card:hover { box-shadow: 0 0 26px rgba(57, 255, 122, 0.3); border-color: var(--green); }

.xp-head {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 20px;
    flex-wrap: wrap;
}

.xp-title { color: var(--text); font-size: 20px; font-weight: 700; }
.xp-date { color: var(--gold); font-size: 13px; letter-spacing: 2px; }
.xp-card p { color: var(--dim); font-size: 15px; line-height: 1.7; margin: 14px 0 0 0; }

/* ---------- education / certs logs ---------- */

.logs-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; }

.log-body {
    padding: 22px 26px;
    font-family: 'Share Tech Mono', monospace;
    font-size: 15px;
    line-height: 1.65;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.log-row {
    padding: 3px 10px;
    margin: -3px -10px;
    transition: background 0.2s;
}
.log-row:hover { background: rgba(57, 255, 122, 0.08); }
.log-row .yr { color: var(--gold); }
.log-row .what { color: var(--mint); }

/* ---------- project boards ---------- */

.board-head {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 18px;
    gap: 16px;
    flex-wrap: wrap;
}

.board-head .section-label { margin-bottom: 0; }

.board-link {
    text-decoration: none;
    color: var(--green);
    font-size: 14px;
    letter-spacing: 2px;
}
.board-link:hover { text-shadow: 0 0 12px rgba(57, 255, 122, 0.8); }

.grid4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }

.board-card {
    text-decoration: none;
    position: relative;
    background: var(--panel);
    border: 1px solid var(--border);
    padding: 30px 20px;
    display: block;
    transition: box-shadow 0.25s, border-color 0.25s;
    color: inherit;
}
.board-card:hover { box-shadow: 0 0 28px rgba(57, 255, 122, 0.35); border-color: var(--green); color: inherit; }

.board-card.lg { padding: 34px 30px; }

.chip-label { color: var(--gold); font-size: 13px; letter-spacing: 3px; margin-bottom: 12px; }
.chip-status { color: var(--green); font-size: 12px; letter-spacing: 2px; }
.chip-head { display: flex; justify-content: space-between; align-items: baseline; }
.chip-title { color: var(--text); font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.board-card.lg .chip-title { font-size: 24px; margin: 14px 0 12px 0; }
.board-card.lg .chip-label { margin-bottom: 0; }
.chip-desc { color: var(--dim); font-size: 13.5px; line-height: 1.55; }
.board-card.lg .chip-desc { font-size: 15px; line-height: 1.65; }
.chip-meta { color: var(--dim2); font-size: 12px; letter-spacing: 1px; margin-top: 16px; }

/* decorative chip pins/pads (positioned spans inside cards) */
.pins-h { position: absolute; height: 5px; background: repeating-linear-gradient(90deg, var(--gold) 0px, var(--gold) 5px, transparent 5px, transparent 10px); }
.pins-h.top { top: 4px; left: 12px; right: 12px; }
.pins-h.bottom { bottom: 4px; left: 12px; right: 12px; }
.pins-v { position: absolute; width: 5px; background: repeating-linear-gradient(0deg, var(--gold) 0px, var(--gold) 5px, transparent 5px, transparent 10px); }
.pins-v.left { left: 4px; top: 16px; bottom: 16px; }
.pins-v.right { right: 4px; top: 16px; bottom: 16px; }

.pad { background: #0a2a18; border: 1px solid var(--border); display: inline-block; }
.pad-row { display: flex; gap: 6px; margin-bottom: 14px; }

.ring { position: absolute; border-radius: 50%; border: 2px solid var(--border); }
.ring.inner { border-color: var(--green); }

/* ---------- contact ---------- */

.contact-card {
    background: var(--bg-term);
    border: 1px solid var(--border-soft);
    border-radius: 8px;
    padding: 40px 44px;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 32px;
    align-items: center;
}

.contact-prompt {
    font-family: 'Share Tech Mono', monospace;
    color: var(--prompt2);
    font-size: 16px;
}
.contact-prompt .user { color: var(--prompt); }

.contact-links {
    display: flex;
    flex-direction: column;
    gap: 10px;
    font-size: 15px;
    font-family: 'Share Tech Mono', monospace;
}

.contact-links .row { display: flex; gap: 14px; }
.contact-links .key { color: var(--dim2); width: 92px; flex: none; }
.contact-links a { text-decoration: none; }

/* ---------- footer ---------- */

footer {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 26px 0 34px 0;
    border-top: 1px solid var(--line);
    color: var(--dim2);
    font-size: 13px;
    letter-spacing: 3px;
}

.footer-cmd {
    font-family: 'Share Tech Mono', monospace;
    font-size: 12.5px;
    letter-spacing: 1px;
    color: var(--prompt2);
    margin-bottom: 6px;
}
.footer-cmd .user { color: var(--prompt); }

.footer-cmd-out {
    font-family: 'Share Tech Mono', monospace;
    font-size: 11.5px;
    letter-spacing: 0.5px;
    color: var(--dim);
    margin-bottom: 18px;
}

.footer-copy { font-size: 13px; letter-spacing: 3px; }

/* ---------- projects page ---------- */

.projects-main { padding: 72px 40px 80px 40px; }

.page-cmd {
    font-family: 'Share Tech Mono', monospace;
    color: var(--prompt2);
    font-size: 16px;
    margin-bottom: 18px;
}
.page-cmd .user { color: var(--prompt); }

.page-title {
    margin: 0 0 8px 0;
    color: var(--text);
    font-size: 52px;
    font-weight: 800;
    letter-spacing: 2px;
}

.page-sub {
    color: var(--green);
    font-size: 17px;
    letter-spacing: 2px;
    margin-bottom: 56px;
}

/* ---------- 404 page ---------- */

.error-main {
    padding: 96px 40px 100px 40px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.error-main .page-cmd { justify-content: center; }

.error-trace {
    font-family: 'Share Tech Mono', monospace;
    color: var(--dim2);
    font-size: 13.5px;
    margin-bottom: 40px;
}

.error-code {
    margin: 0 0 14px 0;
    color: var(--gold);
    font-size: clamp(72px, 14vw, 140px);
    font-weight: 800;
    letter-spacing: 4px;
    line-height: 1;
}

.error-main .page-sub { margin-bottom: 48px; }

/* ---------- Nepal POS detail page ---------- */

body.pos-page { background: var(--bg-deep); font-family: 'Share Tech Mono', monospace; }

.pos-wrap {
    position: relative;
    min-height: 100vh;
    background: var(--bg-deep);
    padding: 40px 24px 64px 24px;
}

.pos-term {
    position: relative;
    overflow: hidden;
    max-width: 1100px;
    margin: 0 auto;
    background: var(--bg-term);
    border: 1px solid var(--border-dark);
    border-radius: 10px;
    box-shadow: inset 0 0 120px rgba(0, 40, 12, 0.5), 0 0 40px rgba(0, 0, 0, 0.6);
    animation: flicker 10s linear infinite;
}

.pos-term .term-bar { padding: 10px 18px; }
.pos-term .term-dot { width: 11px; height: 11px; }
.pos-term .term-title { font-size: 14px; margin-left: 10px; }
.pos-term .term-bar a { text-decoration: none; color: var(--mint); font-size: 13px; letter-spacing: 1px; }
.pos-term .term-bar a:hover { color: var(--text); }
.pos-term .term-bar .spacer { flex: 1; }

.pos-body { padding: 40px 52px 52px 52px; position: relative; }

.pos-cmd { color: var(--prompt2); font-size: 17px; }
.pos-cmd .user { color: var(--prompt); }
.pos-cmd.gap-b { margin-bottom: 14px; }

.pos-cmd .typing { animation: typing 1.4s steps(22, end); }

.pos-title {
    font-family: 'VT323', monospace;
    font-size: 76px;
    line-height: 0.95;
    margin: 26px 0 6px 0;
    color: var(--green);
    text-shadow: 0 0 26px rgba(57, 255, 122, 0.5), 0 0 6px rgba(57, 255, 122, 0.9);
    letter-spacing: 2px;
}

.pos-sub { margin: 0 0 34px 0; color: #7ddf9e; font-size: 19px; }

.pos-text {
    color: var(--mint);
    font-size: 16px;
    line-height: 1.8;
    margin: 0 0 34px 0;
    padding-left: 18px;
}

.pos-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px 40px;
    color: var(--mint);
    font-size: 16px;
    margin-bottom: 34px;
    padding-left: 18px;
}

.pos-stack {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 8px 30px;
    font-size: 16px;
    margin-bottom: 40px;
    padding-left: 18px;
}
.pos-stack .key { color: var(--gold); }
.pos-stack .val { color: var(--mint); }

.pos-log {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 10px 26px;
    font-size: 16px;
    line-height: 1.55;
    margin-bottom: 40px;
    padding-left: 18px;
}
.pos-log .d { color: var(--gold); white-space: nowrap; }
.pos-log .t { color: var(--mint); }

.pos-buttons { display: flex; gap: 14px; flex-wrap: wrap; }

.pos-buttons .btn { padding: 12px 24px; }
.pos-buttons .btn.primary:hover { color: var(--bg-deep); }

.pos-end { margin-top: 40px; }
.pos-end .cursor { width: 11px; height: 19px; margin-left: 0; }

.pos-scanlines {
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: repeating-linear-gradient(0deg, rgba(0, 0, 0, 0.26) 0px, rgba(0, 0, 0, 0.26) 1px, transparent 1px, transparent 3px);
    z-index: 5;
}

/* ---------- timeline page ---------- */

body.timeline-page { overflow: hidden; height: 100vh; margin: 0; background: var(--bg-deep); }

.timeline-nav {
    position: relative;
    z-index: 30;
    display: flex;
    align-items: center;
    gap: 26px;
    padding: 14px 44px;
    background: rgba(3, 16, 10, 0.92);
    border-bottom: 1px solid var(--line);
    backdrop-filter: blur(6px);
}

.timeline-stage {
    position: relative;
    width: 100%;
    height: calc(100vh - 57px);
    overflow: hidden;
    cursor: grab;
    background: var(--bg-deep);
    touch-action: none;
}

.timeline-stage.grabbing { cursor: grabbing; }

.timeline-stage svg { display: block; position: absolute; top: 0; left: 0; }

.tl-trunk { fill: none; stroke: var(--green); stroke-width: 3; filter: drop-shadow(0 0 8px rgba(57, 255, 122, 0.6)); }

.tl-trunk-node circle { fill: var(--bg-term); stroke: var(--green); stroke-width: 2.5; }
.tl-trunk-node.live circle { fill: var(--green); }
.tl-trunk-node text.tl-title { fill: var(--text); font-family: 'JetBrains Mono', monospace; font-weight: 700; font-size: 14px; }
.tl-trunk-node text.tl-sub { fill: var(--dim2); font-family: 'Share Tech Mono', monospace; font-size: 11.5px; }
.tl-trunk-node text.tl-date { fill: var(--gold); font-family: 'Share Tech Mono', monospace; font-size: 11px; letter-spacing: 1px; }

.tl-branch-path { fill: none; stroke: var(--border); stroke-width: 2; transition: stroke 0.2s, filter 0.2s; }
.tl-branch-group:hover .tl-branch-path,
.tl-branch-group.expanded .tl-branch-path { stroke: var(--green); filter: drop-shadow(0 0 6px rgba(57, 255, 122, 0.5)); }

.tl-branch-node circle { fill: var(--panel); stroke: var(--border); stroke-width: 2; transition: stroke 0.2s, fill 0.2s; }
.tl-branch-node.live circle { stroke: var(--green); }
.tl-branch-group:hover .tl-branch-node circle,
.tl-branch-group.expanded .tl-branch-node circle { stroke: var(--green); fill: rgba(57, 255, 122, 0.12); }

.tl-branch-group { cursor: pointer; transition: opacity 0.25s; }
.tl-branch-group.tl-dimmed { opacity: 0.16; }
.tl-branch-group text.tl-title { fill: var(--text); font-family: 'JetBrains Mono', monospace; font-weight: 700; font-size: 13.5px; }
.tl-branch-group text.tl-date { fill: var(--gold); font-family: 'Share Tech Mono', monospace; font-size: 10.5px; letter-spacing: 1px; }
.tl-branch-group text.tl-hint { fill: var(--dim2); font-family: 'Share Tech Mono', monospace; font-size: 10px; letter-spacing: 1px; }

.tl-sub-path { fill: none; stroke: var(--border-soft); stroke-width: 1.5; stroke-dasharray: 3 4; }
.tl-sub-node circle { fill: var(--bg-term); stroke: var(--mint); stroke-width: 1.5; }
.tl-sub-node text.tl-sub-date { fill: var(--gold); font-family: 'Share Tech Mono', monospace; font-size: 10px; }
.tl-sub-node text.tl-sub-text { fill: var(--mint); font-family: 'Share Tech Mono', monospace; font-size: 11.5px; }
.tl-sub-node a text { cursor: pointer; }
.tl-sub-node a:hover text.tl-sub-text { fill: var(--text); }

.tl-open-link { fill: var(--green); font-family: 'Share Tech Mono', monospace; font-size: 11px; letter-spacing: 1px; cursor: pointer; }
.tl-open-link:hover { fill: var(--green-soft); }

.timeline-hud {
    position: absolute;
    z-index: 20;
    left: 24px;
    bottom: 24px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    pointer-events: none;
}

.timeline-hud-hint {
    font-family: 'Share Tech Mono', monospace;
    font-size: 12px;
    letter-spacing: 1px;
    color: var(--dim2);
    background: rgba(3, 16, 10, 0.75);
    border: 1px solid var(--border-soft);
    padding: 8px 14px;
    pointer-events: none;
}

.timeline-controls {
    position: absolute;
    z-index: 20;
    right: 24px;
    bottom: 24px;
    display: flex;
    gap: 8px;
}

.tl-btn {
    pointer-events: auto;
    background: var(--panel);
    border: 1px solid var(--border);
    color: var(--mint);
    font-family: 'JetBrains Mono', monospace;
    font-size: 13px;
    padding: 9px 14px;
    cursor: pointer;
    transition: border-color 0.2s, color 0.2s, box-shadow 0.2s;
}
.tl-btn:hover { border-color: var(--green); color: var(--text); box-shadow: 0 0 14px rgba(57, 255, 122, 0.35); }

.timeline-legend {
    position: absolute;
    z-index: 20;
    right: 24px;
    top: 76px;
    display: flex;
    gap: 18px;
    font-family: 'Share Tech Mono', monospace;
    font-size: 11.5px;
    color: var(--dim);
    background: rgba(3, 16, 10, 0.75);
    border: 1px solid var(--border-soft);
    padding: 8px 16px;
    pointer-events: none;
}
.timeline-legend span { display: inline-flex; align-items: center; gap: 6px; }
.legend-dot { width: 9px; height: 9px; border-radius: 50%; display: inline-block; }
.legend-dot.edu { background: var(--gold); }
.legend-dot.job { background: var(--mint); }
.legend-dot.project { background: var(--green); }

@media (max-width: 820px) {
    .timeline-legend { display: none; }
    .timeline-hud-hint { font-size: 10.5px; padding: 6px 10px; }
}

@media (max-width: 600px) {
    .timeline-hud {
        left: 12px;
        right: 12px;
        bottom: 70px;
        align-items: center;
    }
    .timeline-hud-hint { text-align: center; }
    .timeline-controls {
        left: 12px;
        right: 12px;
        bottom: 12px;
        justify-content: center;
    }
    .tl-btn { padding: 9px 10px; font-size: 12px; }
}

/* ---------- responsive ---------- */

@media (max-width: 1000px) {
    .grid4 { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 820px) {
    nav { padding: 12px 18px; gap: 12px; }
    .nav-links { display: none; }
    .nav-link { padding: 6px 10px; font-size: 11.5px; letter-spacing: 1px; }
    .main { padding: 56px 20px 48px 20px; gap: 56px; }
    .projects-main { padding: 48px 20px 60px 20px; }
    .about-grid { grid-template-columns: 1fr; justify-items: center; }
    .logs-grid { grid-template-columns: 1fr; }
    .grid2 { grid-template-columns: 1fr; }
    .skills-grid { grid-template-columns: 1fr; }
    .contact-card { grid-template-columns: 1fr; padding: 28px 24px; }
    .hero { height: 560px; }
    .hero-inner { padding: 0 40px; }
    .prompt-line {
        flex-wrap: wrap;
        justify-content: center;
        font-size: 12px;
        gap: 4px 8px;
    }
    .typing { white-space: normal; }
    .hero-buttons {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 10px;
        width: 100%;
        max-width: 320px;
        margin-left: auto;
        margin-right: auto;
    }
    .hero-buttons .btn.primary { grid-column: 1 / -1; }
    .hero-buttons .btn.ghost {
        padding: 12px 4px;
        font-size: 10.5px;
        letter-spacing: 0.5px;
        text-align: center;
        white-space: nowrap;
    }
    .page-title { font-size: 38px; }
    .pos-term .term-bar { flex-wrap: wrap; row-gap: 8px; }
    .pos-term .term-title {
        order: 3;
        flex: 1 0 100%;
        margin-left: 0;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    .pos-term .term-bar .spacer { order: 1; }
    .pos-term .term-bar a { order: 2; white-space: nowrap; }
    .pos-body { padding: 28px 22px 36px 22px; }
    .pos-title { font-size: 52px; }
    .pos-features { grid-template-columns: 1fr; }
    .pos-log { grid-template-columns: 1fr; gap: 2px 0; }
    .pos-log .t { margin-bottom: 10px; }
    #boot { padding: 40px 24px; }
    .boot-title { font-size: 22px; }
    .boot-line { font-size: 18px; white-space: pre-wrap; }
    .boot-skip { left: 24px; font-size: 15px; }
}

@media (max-width: 560px) {
    .grid4 { grid-template-columns: 1fr; }
}