/* ===== Tokens ===== */
:root {
  --bg: #0b1020;
  --bg-alt: #0e1428;
  --surface: #131a31;
  --surface-2: #182040;
  --border: rgba(148, 163, 214, 0.12);
  --border-strong: rgba(148, 163, 214, 0.22);
  --text: #e7ebf7;
  --text-2: #a7b0cc;
  --text-3: #6f7a9c;

  --acc: #4cc9f0;          /* primary accent */
  --acc-2: #a78bfa;        /* secondary accent */
  --acc-ink: #04121c;      /* text on accent */
  --cyan: #4cc9f0;
  --violet: #a78bfa;
  --green: #4ade80;
  --amber: #fbbf24;
  --red: #f87171;

  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 1px 0 rgba(255,255,255,0.04) inset, 0 20px 40px -24px rgba(0,0,0,0.6);
  --font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --wrap: 1120px;
  --nav-h: 68px;
}

/* ===== Base ===== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-h) + 12px); -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 400 16px/1.65 var(--font);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
a { color: var(--acc); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
h1, h2, h3 { line-height: 1.15; letter-spacing: -0.02em; margin: 0; font-weight: 700; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
::selection { background: color-mix(in srgb, var(--acc) 35%, transparent); }
:focus-visible { outline: 2px solid var(--acc); outline-offset: 3px; border-radius: 6px; }

svg { fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.wrap--narrow { max-width: 860px; }
@media (max-width: 600px) { .wrap { padding: 0 16px; } }

.skip { position: absolute; left: -9999px; top: 8px; background: var(--acc); color: var(--acc-ink); padding: 8px 14px; border-radius: 8px; z-index: 100; font-weight: 600; }
.skip:focus { left: 8px; }

/* ===== Nav ===== */
.nav {
  position: sticky; top: 0; z-index: 50;
  height: var(--nav-h);
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  backdrop-filter: saturate(150%) blur(14px);
  -webkit-backdrop-filter: saturate(150%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s, background .2s;
}
.nav.is-scrolled { border-bottom-color: var(--border); }
.nav__inner { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.logo { font: 600 17px/1 var(--mono); color: var(--text); letter-spacing: -0.01em; white-space: nowrap; }
.logo:hover { text-decoration: none; }
.logo__br { color: var(--acc); }
.logo__tld { color: var(--acc-2); }
.nav__links { display: flex; align-items: center; gap: 28px; }
.nav__links a:not(.btn) { color: var(--text-2); font-size: 14.5px; font-weight: 500; transition: color .15s; }
.nav__links a:not(.btn):hover { color: var(--text); text-decoration: none; }
.nav__toggle { display: none; background: none; border: 0; padding: 10px; margin-right: -10px; cursor: pointer; }
.nav__toggle span { display: block; width: 22px; height: 2px; background: var(--text); border-radius: 2px; transition: transform .25s, opacity .2s; }
.nav__toggle span + span { margin-top: 5px; }
.nav__toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav__toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 820px) {
  .nav__toggle { display: block; }
  .nav__links {
    position: fixed; inset: var(--nav-h) 0 auto 0;
    flex-direction: column; align-items: stretch; gap: 0;
    padding: 8px 16px 20px;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    transform: translateY(-8px); opacity: 0; pointer-events: none;
    transition: opacity .2s, transform .2s;
  }
  .nav__links.is-open { opacity: 1; transform: none; pointer-events: auto; }
  .nav__links a:not(.btn) { padding: 14px 4px; font-size: 16px; border-bottom: 1px solid var(--border); }
  .nav__links .btn { margin-top: 14px; }
}

/* ===== Buttons ===== */
.btn {
  --h: 46px;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: var(--h); padding: 0 20px;
  border-radius: 12px; border: 1px solid transparent;
  font: 600 15px/1 var(--font); cursor: pointer; white-space: nowrap;
  transition: transform .15s, background .15s, border-color .15s, box-shadow .2s, color .15s;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn:active { transform: none; }
.btn svg { width: 18px; height: 18px; }
.btn--sm { --h: 38px; padding: 0 14px; font-size: 14px; border-radius: 10px; }
.btn--primary {
  background: linear-gradient(135deg, var(--acc), color-mix(in srgb, var(--acc) 60%, var(--acc-2)));
  color: var(--acc-ink);
  box-shadow: 0 10px 30px -12px color-mix(in srgb, var(--acc) 70%, transparent);
}
.btn--primary:hover { box-shadow: 0 14px 34px -10px color-mix(in srgb, var(--acc) 80%, transparent); }
.btn--ghost { background: var(--surface); border-color: var(--border-strong); color: var(--text); }
.btn--ghost:hover { border-color: color-mix(in srgb, var(--acc) 50%, transparent); }
.btn--text { background: none; color: var(--acc); padding: 0 8px; }
.btn--block { width: 100%; }
.btn[disabled] { opacity: .6; cursor: progress; transform: none; }

/* ===== Hero ===== */
.hero { position: relative; padding: clamp(56px, 10vw, 120px) 0 clamp(64px, 10vw, 112px); overflow: hidden; }
.hero__glow {
  position: absolute; inset: -20% -10% auto; height: 120%; pointer-events: none;
  background:
    radial-gradient(40% 50% at 25% 30%, color-mix(in srgb, var(--acc) 16%, transparent), transparent 70%),
    radial-gradient(35% 45% at 80% 60%, color-mix(in srgb, var(--acc-2) 14%, transparent), transparent 70%);
  filter: blur(10px);
}
.hero::after { /* subtle grid */
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: linear-gradient(var(--border) 1px, transparent 1px), linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(60% 60% at 50% 40%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(60% 60% at 50% 40%, #000 30%, transparent 75%);
  opacity: .5;
}
.hero__grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.15fr 1fr; gap: 56px; align-items: center; }
@media (max-width: 960px) { .hero__grid { grid-template-columns: 1fr; gap: 48px; } }

.chip {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 12px; border-radius: 999px;
  background: var(--surface); border: 1px solid var(--border-strong);
  font: 500 12.5px/1.3 var(--mono); color: var(--text-2);
}
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--green); flex: none; }
.dot--live { box-shadow: 0 0 0 0 color-mix(in srgb, var(--green) 60%, transparent); animation: pulse 2.4s infinite; }
@keyframes pulse { 70% { box-shadow: 0 0 0 8px transparent; } 100% { box-shadow: 0 0 0 0 transparent; } }

.hero h1 { font-size: clamp(44px, 7vw, 76px); font-weight: 800; letter-spacing: -0.035em; margin-top: 22px; }
.hero__role {
  margin-top: 12px; font-size: clamp(19px, 2.4vw, 24px); font-weight: 600;
  background: linear-gradient(90deg, var(--acc), var(--acc-2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
  width: fit-content;
}
.hero__lede { margin-top: 18px; max-width: 560px; color: var(--text-2); font-size: 17.5px; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
@media (max-width: 480px) { .hero__cta .btn--primary, .hero__cta .btn--ghost { flex: 1 1 100%; } }

.socials { display: flex; gap: 10px; margin-top: 28px; }
.socials a {
  display: grid; place-items: center; width: 42px; height: 42px; border-radius: 12px;
  background: var(--surface); border: 1px solid var(--border); color: var(--text-2);
  transition: color .15s, border-color .15s, transform .15s;
}
.socials a:hover { color: var(--acc); border-color: color-mix(in srgb, var(--acc) 45%, transparent); transform: translateY(-2px); }
.socials svg { width: 19px; height: 19px; }

/* Terminal card */
.term {
  margin: 0; border-radius: var(--radius); overflow: hidden;
  background: color-mix(in srgb, var(--surface) 88%, black);
  border: 1px solid var(--border-strong);
  box-shadow: 0 40px 80px -40px rgba(0,0,0,.8), 0 0 0 1px rgba(255,255,255,.02) inset;
}
.term__bar { display: flex; align-items: center; gap: 7px; padding: 12px 16px; border-bottom: 1px solid var(--border); background: rgba(255,255,255,.02); }
.term__bar span { width: 11px; height: 11px; border-radius: 50%; background: #ff5f57; }
.term__bar span:nth-child(2) { background: #febc2e; }
.term__bar span:nth-child(3) { background: #28c840; }
.term__bar code { margin-left: 10px; font: 500 12px var(--mono); color: var(--text-3); }
.term__body { margin: 0; padding: 20px 20px 22px; font: 400 13.5px/1.75 var(--mono); color: var(--text); overflow-x: auto; }
@media (max-width: 480px) { .term__body { font-size: 11.5px; padding: 16px; } }
.t-mute { color: var(--text-3); }
.t-ok { color: var(--green); }
.t-warn { color: var(--amber); }
.t-acc { color: var(--acc); font-weight: 600; }
.caret { display: inline-block; width: 8px; height: 1.1em; vertical-align: -2px; background: var(--acc); animation: blink 1.1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

/* ===== Sections ===== */
.section { padding: clamp(72px, 10vw, 120px) 0; border-top: 1px solid var(--border); }
.section--alt { background: var(--bg-alt); }
.section__head { max-width: 720px; margin-bottom: 48px; }
.section__head--center { margin-left: auto; margin-right: auto; text-align: center; }
.section__head--center .section__lede { margin-left: auto; margin-right: auto; }
.eyebrow {
  display: inline-block; font: 600 12px/1 var(--mono); letter-spacing: .12em; text-transform: uppercase;
  color: var(--acc); padding: 7px 10px; border-radius: 8px;
  background: color-mix(in srgb, var(--acc) 10%, transparent);
  border: 1px solid color-mix(in srgb, var(--acc) 22%, transparent);
}
.section h2 { font-size: clamp(30px, 4.4vw, 46px); margin-top: 18px; }
.section__lede { margin-top: 16px; max-width: 620px; color: var(--text-2); font-size: 17px; }

.grid { display: grid; gap: 20px; }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 1000px) { .grid--4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 860px) { .grid--3 { grid-template-columns: 1fr; } }
@media (max-width: 560px) { .grid--4 { grid-template-columns: 1fr; } }

.card {
  position: relative;
  background: linear-gradient(180deg, var(--surface), color-mix(in srgb, var(--surface) 70%, var(--bg)));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  box-shadow: var(--shadow);
  transition: border-color .2s, transform .2s;
}
.card:hover { border-color: var(--border-strong); }
.card h3 { font-size: 18px; font-weight: 650; margin-top: 18px; }
.card p { margin-top: 8px; color: var(--text-2); font-size: 15px; }

.icon { width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; }
.icon svg { width: 22px; height: 22px; }
.icon--cyan   { color: var(--cyan);   background: color-mix(in srgb, var(--cyan) 12%, transparent); }
.icon--violet { color: var(--violet); background: color-mix(in srgb, var(--violet) 12%, transparent); }
.icon--green  { color: var(--green);  background: color-mix(in srgb, var(--green) 12%, transparent); }
.icon--amber  { color: var(--amber);  background: color-mix(in srgb, var(--amber) 12%, transparent); }
.icon--red    { color: var(--red);    background: color-mix(in srgb, var(--red) 12%, transparent); }

.note { display: flex; align-items: flex-start; gap: 10px; margin-top: 32px; color: var(--text-3); font-size: 14.5px; }
.note svg { width: 18px; height: 18px; flex: none; margin-top: 3px; color: var(--acc-2); }

/* Skills */
.skill h3 { margin-top: 0; display: flex; align-items: center; gap: 12px; }
.skill__ic { width: 36px; height: 36px; border-radius: 10px; display: grid; place-items: center; font: 600 14px var(--mono); }
.tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }
.tags li {
  font: 500 13px/1 var(--mono); color: var(--text-2);
  padding: 8px 11px; border-radius: 8px;
  background: rgba(255,255,255,.03); border: 1px solid var(--border);
}
.tags--sm { margin-top: auto; padding-top: 20px; }
.tags--sm li { font-size: 11.5px; padding: 6px 9px; }

/* Timeline */
.timeline { position: relative; display: grid; gap: 28px; padding-left: 36px; }
.timeline::before { content: ""; position: absolute; left: 9px; top: 12px; bottom: 12px; width: 2px; background: linear-gradient(var(--acc), var(--acc-2), var(--green)); opacity: .35; border-radius: 2px; }
.tl { position: relative; }
.tl__dot { position: absolute; left: -36px; top: 28px; width: 20px; height: 20px; border-radius: 50%; background: var(--bg); border: 2px solid currentColor; }
.tl__dot::after { content: ""; position: absolute; inset: 4px; border-radius: 50%; background: currentColor; }
.tl__dot--cyan { color: var(--cyan); } .tl__dot--violet { color: var(--violet); } .tl__dot--green { color: var(--green); }
.tl__head { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.tl__head h3 { margin: 0; font-size: 20px; }
.tl__meta { font: 500 13px/1.5 var(--mono) !important; color: var(--text-3) !important; margin-top: 8px !important; }
.badge { font: 600 11.5px/1 var(--mono); padding: 6px 9px; border-radius: 7px; white-space: nowrap; }
.badge--cyan   { color: var(--cyan);   background: color-mix(in srgb, var(--cyan) 12%, transparent); }
.badge--violet { color: var(--violet); background: color-mix(in srgb, var(--violet) 12%, transparent); }
.badge--green  { color: var(--green);  background: color-mix(in srgb, var(--green) 12%, transparent); }
.bullets { margin-top: 16px; display: grid; gap: 10px; }
.bullets li { position: relative; padding-left: 20px; color: var(--text-2); font-size: 15px; }
.bullets li::before { content: ""; position: absolute; left: 2px; top: .65em; width: 6px; height: 6px; border-radius: 2px; background: var(--acc); transform: rotate(45deg); }
@media (max-width: 560px) { .timeline { padding-left: 28px; } .tl__dot { left: -28px; } .timeline::before { left: 9px; } }

/* Projects */
.proj { display: flex; flex-direction: column; }
.proj:hover { transform: translateY(-3px); }
.proj__top { display: flex; align-items: center; justify-content: space-between; }
.proj__kind { font: 500 12px var(--mono); color: var(--text-3); }

/* Contact */
.contact { display: grid; grid-template-columns: 1fr 1.1fr; gap: 56px; align-items: start; }
@media (max-width: 900px) { .contact { grid-template-columns: 1fr; gap: 36px; } }
.contact__list { margin-top: 28px; display: grid; gap: 14px; }
.contact__list li { display: flex; align-items: center; gap: 12px; color: var(--text-2); }
.contact__list svg { width: 20px; height: 20px; color: var(--acc); flex: none; }

.form { display: grid; gap: 18px; padding: 28px; }
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 560px) { .form__row { grid-template-columns: 1fr; } .form { padding: 20px; } }
.form label { display: grid; gap: 8px; font: 600 12px/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--text-3); }
.form input, .form textarea {
  width: 100%; font: 400 15.5px/1.5 var(--font); color: var(--text);
  background: var(--bg); border: 1px solid var(--border-strong); border-radius: var(--radius-sm);
  padding: 12px 14px; transition: border-color .15s, box-shadow .15s;
  text-transform: none; letter-spacing: 0;
}
.form textarea { resize: vertical; min-height: 130px; }
.form input::placeholder, .form textarea::placeholder { color: var(--text-3); }
.form input:focus, .form textarea:focus { outline: none; border-color: var(--acc); box-shadow: 0 0 0 3px color-mix(in srgb, var(--acc) 20%, transparent); }
.form [aria-invalid="true"] { border-color: var(--red); }
.form .btn { margin-top: 4px; }
.hp { position: absolute !important; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.form__status { min-height: 1.4em; font-size: 14.5px; text-align: center; color: var(--text-2); }
.form__status.is-ok { color: var(--green); }
.form__status.is-err { color: var(--red); }

/* Footer */
.footer { border-top: 1px solid var(--border); padding: 32px 0; font: 400 13px var(--mono); color: var(--text-3); }
.footer__inner { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
.footer__links a { color: var(--text-2); }
.footer__links span { margin: 0 6px; opacity: .5; }

/* Reveal on scroll */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity .6s ease, transform .6s ease; }
.reveal.is-in { opacity: 1; transform: none; }
.no-js .reveal { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}