/* ============================================================
   Vishal Kannankara — portfolio
   Plain HTML/CSS/JS. No build step. Cloudflare Pages ready.
   Monochrome, minimal, lots of whitespace. DM Sans + DM Mono.
   ============================================================ */

:root {
  --bg: #ffffff;
  --surface: #ffffff;
  --surface-2: #f5f5f2;
  --ink: #14181f;
  --ink-2: #3c4350;
  --muted: #8b919d;
  --line: rgba(20, 24, 31, 0.11);
  --line-2: rgba(20, 24, 31, 0.22);
  --accent: #14181f;
  --accent-ink: #14181f;

  --term-bg: #14181f;
  --term-surface: #1e232d;
  --term-ink: #e8ebf1;
  --term-dim: #8b94a6;
  --term-green: #6cc08a;
  --term-amber: #d9a657;

  --radius: 16px;
  --radius-sm: 12px;
  --radius-lg: 22px;
  --maxw: 1100px;
  --font: "DM Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --mono: "DM Mono", ui-monospace, "SF Mono", Menlo, monospace;
}

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

html { scroll-behavior: smooth; scroll-padding-top: 84px; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation: none !important; transition: none !important; }
}

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }

a { color: var(--ink); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3 { line-height: 1.12; letter-spacing: -0.02em; font-weight: 600; }
strong { color: var(--ink); font-weight: 600; }

.skip { position: absolute; left: -999px; top: 0; background: var(--ink); color: #fff; padding: 10px 16px; border-radius: 0 0 12px 0; z-index: 200; }
.skip:focus { left: 0; }

/* ---------- nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.nav__logo { display: flex; align-items: baseline; gap: 8px; color: var(--ink); }
.nav__logo:hover { text-decoration: none; }
.nav__logo-name { font-size: 16px; font-weight: 600; }
.nav__logo-role { font-size: 14px; color: var(--muted); font-weight: 400; }
.nav__links { display: flex; align-items: center; gap: 20px; }
.nav__link { color: var(--ink-2); font-size: 14.5px; font-weight: 500; }
.nav__link:hover { color: var(--ink); text-decoration: none; }
.nav__div { width: 1px; height: 18px; background: var(--line-2); margin: 0 2px; }
.nav__toggle { display: none; background: none; border: 0; cursor: pointer; width: 40px; height: 40px; }
.nav__toggle span { display: block; width: 22px; height: 2px; background: var(--ink); margin: 4px auto; transition: 0.25s; border-radius: 2px; }

/* ---------- hero ---------- */
.hero { padding: 92px 0 100px; position: relative; }
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(20, 24, 31, 0.10) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(20, 24, 31, 0.10) 1px, transparent 1px),
    linear-gradient(to right, rgba(20, 24, 31, 0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(20, 24, 31, 0.05) 1px, transparent 1px);
  background-size: 130px 130px, 130px 130px, 26px 26px, 26px 26px;
  -webkit-mask-image: linear-gradient(to bottom, #000 50%, transparent 100%);
  mask-image: linear-gradient(to bottom, #000 50%, transparent 100%);
  pointer-events: none;
}
.hero__inner { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 64px; align-items: center; position: relative; z-index: 1; }
.hero__label { font-family: var(--mono); font-size: 12px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--muted); margin-bottom: 28px; }
.hero__title { font-size: clamp(48px, 8vw, 86px); letter-spacing: -0.04em; line-height: 1.0; }
.hero__desc { font-size: 19px; color: var(--ink-2); max-width: 48ch; margin-top: 28px; line-height: 1.6; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 36px; }
.hero__stats { display: flex; gap: 56px; margin-top: 56px; padding-top: 32px; border-top: 1px solid var(--line); }
.hstat { display: flex; flex-direction: column; gap: 6px; }
.hstat__label { font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); }
.hstat__val { font-size: 22px; font-weight: 600; color: var(--ink); letter-spacing: -0.01em; }

.hero__aside { display: flex; justify-content: center; }
.portrait {
  position: relative; width: 100%; max-width: 400px; aspect-ratio: 4 / 5;
  border-radius: 18px; overflow: hidden; background: var(--surface-2);
  border: 1px solid var(--line); display: grid; place-items: center;
}
.portrait img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.portrait img[data-broken] { display: none; }
.portrait__mark { font-family: var(--mono); font-size: 92px; font-weight: 500; color: var(--muted); letter-spacing: 0.04em; }
.portrait__cap {
  position: absolute; left: 0; right: 0; bottom: 0; display: flex; justify-content: space-between;
  padding: 11px 16px; background: rgba(255, 255, 255, 0.92); border-top: 1px solid var(--line);
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-2);
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px; font-size: 15px; font-weight: 500;
  padding: 12px 22px; border-radius: 999px; border: 1px solid transparent; cursor: pointer;
  transition: transform 0.12s ease, background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn--primary { background: var(--ink); color: #fff; }
.btn--primary:hover { background: #000; }
.btn--ghost { background: transparent; color: var(--ink); border-color: var(--line-2); }
.btn--ghost:hover { border-color: var(--ink); }
.btn--sm { padding: 9px 16px; font-size: 14px; }

/* ---------- terminal (project visuals only) ---------- */
.term { background: var(--term-bg); border-radius: var(--radius); overflow: hidden; border: 1px solid rgba(255,255,255,0.08); font-family: var(--mono); font-size: 13px; line-height: 1.7; }
.term__bar { display: flex; align-items: center; gap: 7px; padding: 11px 14px; background: var(--term-surface); border-bottom: 1px solid rgba(255,255,255,0.06); }
.term__dot { width: 11px; height: 11px; border-radius: 50%; background: #3a4456; }
.term__name { margin-left: 10px; color: var(--term-dim); font-size: 12px; }
.term__body { padding: 16px 18px; color: var(--term-ink); }
.term__line { color: var(--term-ink); }
.term__out { color: var(--term-ink); white-space: pre-wrap; }
.term__dim { color: var(--term-dim); }
.term__prompt { color: var(--term-green); margin-right: 8px; font-weight: 500; }
.term__ok { color: var(--term-green); }
.term__warn { color: var(--term-amber); }
.term--mini { font-size: 12.5px; }

/* ---------- sections ---------- */
.section { padding: 112px 0; border-top: 1px solid var(--line); }
.section--alt { background: var(--bg); }
.section__head { max-width: 62ch; margin-bottom: 56px; }
.section__kicker { font-family: var(--mono); font-size: 12px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--muted); margin-bottom: 18px; }
.section__title { font-size: clamp(27px, 3.6vw, 40px); letter-spacing: -0.025em; }
.section__sub { font-size: 18px; color: var(--muted); margin-top: 16px; max-width: 58ch; line-height: 1.55; }

/* ---------- about ---------- */
.pov { max-width: 64ch; display: grid; gap: 20px; }
.pov p { color: var(--ink-2); font-size: 18px; }
.callout { margin: 44px 0 4px; padding: 26px 30px; max-width: 64ch; background: var(--bg); border: 1px solid var(--line-2); border-left: 3px solid var(--ink); border-radius: var(--radius); }
.callout blockquote { font-size: clamp(20px, 2.6vw, 27px); font-weight: 600; letter-spacing: -0.02em; color: var(--ink); line-height: 1.3; }
.facets { margin-top: 44px; border-top: 1px solid var(--line); }
.facet { display: grid; grid-template-columns: 300px 1fr; gap: 48px; padding: 36px 0; border-bottom: 1px solid var(--line); }
.facet__n { font-family: var(--mono); font-size: 12px; letter-spacing: 0.14em; color: var(--muted); margin-bottom: 14px; }
.facet__name { font-size: clamp(20px, 2.2vw, 26px); font-weight: 600; letter-spacing: -0.02em; color: var(--ink); }
.facet__desc { color: var(--ink-2); font-size: 17px; line-height: 1.6; max-width: 56ch; }

/* ---------- skills ---------- */
.skills { margin-top: 8px; border-top: 1px solid var(--line); }
.skillcat { display: grid; grid-template-columns: 300px 1fr; gap: 48px; padding: 32px 0; border-bottom: 1px solid var(--line); align-items: start; }
.skillcat__name { font-size: clamp(18px, 2vw, 22px); font-weight: 600; color: var(--ink); letter-spacing: -0.01em; }
.tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tag { font-family: var(--mono); font-size: 12px; color: var(--ink-2); background: var(--surface-2); border: 1px solid var(--line); border-radius: 8px; padding: 4px 10px; }
.section--alt .tag { background: var(--bg); }

/* ---------- cards (certificates) ---------- */
.grid { display: grid; gap: 24px; }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; transition: border-color 0.2s ease, transform 0.12s ease; }
.card:hover { border-color: var(--line-2); transform: translateY(-2px); }
.card__title { font-size: 17px; margin-bottom: 8px; }
.card__desc { color: var(--muted); font-size: 14.5px; line-height: 1.5; }
.section--alt .card { background: var(--bg); }

/* ---------- credentials (rows, mirrors skills) ---------- */
.creds { margin-top: 8px; border-top: 1px solid var(--line); }
.cred { display: grid; grid-template-columns: 300px 1fr; gap: 48px; padding: 28px 0; border-bottom: 1px solid var(--line); align-items: start; }
.cred__org { font-size: clamp(17px, 1.9vw, 21px); font-weight: 600; color: var(--ink); letter-spacing: -0.01em; }
.cred__title { font-size: 16px; color: var(--ink-2); line-height: 1.55; }
.cred__head { display: flex; align-items: center; gap: 12px; }
.cred__logo { order: -1; height: 28px; width: auto; flex-shrink: 0; }
.job__corow { display: flex; align-items: center; gap: 10px; }
.job__logo { height: 24px; width: auto; flex-shrink: 0; }

/* ---------- experience ---------- */
.timeline { display: grid; gap: 8px; }
.job { display: grid; grid-template-columns: 220px 1fr; gap: 40px; padding: 40px 0; border-top: 1px solid var(--line); }
.job:first-child { border-top: 0; padding-top: 8px; }
.job__meta { display: flex; flex-direction: column; gap: 4px; }
.job__date { font-family: var(--mono); font-size: 13px; color: var(--muted); }
.job__co { font-size: 20px; font-weight: 600; color: var(--ink); letter-spacing: -0.01em; }
.job__role { font-size: 16px; color: var(--ink-2); margin-bottom: 12px; font-weight: 600; }
.job__desc { color: var(--ink-2); font-size: 16.5px; max-width: 64ch; }
.stat-row { display: flex; flex-wrap: wrap; gap: 32px; margin: 24px 0; }
.stat { display: flex; flex-direction: column; }
.stat__num { font-family: var(--mono); font-size: 26px; font-weight: 500; color: var(--ink); letter-spacing: -0.02em; }
.stat__label { font-size: 12.5px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.06em; }
.job__points { list-style: none; display: grid; gap: 8px; }
.job__points li { position: relative; padding-left: 22px; color: var(--ink-2); font-size: 15.5px; }
.job__points li::before { content: "▹"; position: absolute; left: 0; color: var(--muted); }
.experience__earlier { margin-top: 40px; }
.earlier { display: flex; gap: 16px; align-items: flex-start; }
.earlier__logo { height: 28px; width: auto; flex-shrink: 0; margin-top: 2px; }
.earlier__co { font-size: 16px; font-weight: 600; color: var(--ink); margin-bottom: 6px; }
.earlier__co a { color: var(--ink); }
.earlier__desc { font-size: 15.5px; color: var(--ink-2); line-height: 1.6; max-width: 70ch; }
.experience__more { margin-top: 28px; color: var(--muted); font-size: 15px; max-width: 70ch; }

/* ---------- projects ---------- */
.project { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 30px; }
.section--alt .project { background: var(--bg); }
.project--featured { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; border-color: var(--line-2); border-radius: var(--radius-lg); margin-bottom: 24px; }
.project__kicker { font-family: var(--mono); font-size: 12px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); margin-bottom: 10px; }
.project__title { font-size: 24px; margin-bottom: 12px; }
.project__desc { color: var(--ink-2); font-size: 16px; line-height: 1.6; margin-bottom: 16px; }
.project .tags { margin-bottom: 22px; }
.grid--2 .project { display: flex; flex-direction: column; }
.grid--2 .project__visual { margin-top: auto; padding-top: 18px; }

.flow { background: var(--term-bg); border-radius: var(--radius-sm); padding: 18px; font-family: var(--mono); font-size: 12.5px; color: var(--term-ink); display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.flow__node { background: var(--term-surface); border: 1px solid rgba(255,255,255,0.08); border-radius: 8px; padding: 5px 9px; }
.flow__node--ok { color: var(--term-green); }
.flow__arrow { color: var(--term-dim); }
.flow__branch { flex-basis: 100%; color: var(--term-amber); margin-top: 8px; }

/* ---------- writing ---------- */
.writing { max-width: 820px; }
.writing__lead { font-size: clamp(20px, 2.3vw, 26px); color: var(--ink); line-height: 1.42; letter-spacing: -0.02em; margin-bottom: 32px; }
.writing__card { border: 1px solid var(--line-2); border-radius: var(--radius); padding: 28px 30px; background: var(--bg); margin-bottom: 28px; }
.writing__kicker { font-family: var(--mono); font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); margin-bottom: 12px; }
.writing__title { font-size: clamp(19px, 2vw, 23px); font-weight: 600; letter-spacing: -0.02em; margin-bottom: 12px; }
.writing__desc { font-size: 16px; color: var(--ink-2); line-height: 1.6; margin-bottom: 20px; max-width: 62ch; }
.writing__card .tags { margin: 0; }
.btn__logo { height: 18px; width: 18px; border-radius: 4px; flex-shrink: 0; }

/* ---------- placeholder ---------- */
.placeholder-note { color: var(--muted); font-size: 16px; max-width: 62ch; line-height: 1.6; }

/* ---------- contact ---------- */
.contact { max-width: 62ch; }
.contact__line { font-size: clamp(25px, 3.4vw, 36px); letter-spacing: -0.02em; margin: 0 0 36px; max-width: 28ch; }
.contact__links { display: flex; flex-wrap: wrap; gap: 14px; }
.sociallink { border: 1px solid var(--line-2); border-radius: 999px; padding: 11px 24px; color: var(--ink); font-weight: 500; font-size: 15px; transition: 0.2s; }
.sociallink:hover { border-color: var(--ink); text-decoration: none; }

/* ---------- footer ---------- */
.footer { border-top: 1px solid var(--line); padding: 32px 0; }
.footer__inner { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; color: var(--muted); font-size: 14px; }
.footer__note { font-family: var(--mono); font-size: 12.5px; }

/* ---------- reveal ---------- */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.is-visible { opacity: 1; transform: none; }

/* ---------- responsive ---------- */
@media (max-width: 980px) {
  .nav__logo-role { display: none; }
  .nav__links {
    position: fixed; inset: 68px 0 auto 0; flex-direction: column; align-items: flex-start;
    gap: 4px; background: var(--bg); border-bottom: 1px solid var(--line); padding: 16px 28px 24px;
    transform: translateY(-130%); transition: transform 0.28s ease; box-shadow: 0 16px 30px rgba(0,0,0,0.10);
  }
  .nav__links.is-open { transform: translateY(0); }
  .nav__link { padding: 10px 0; font-size: 17px; }
  .nav__div { display: none; }
  .nav__toggle { display: block; }
  .nav__toggle.is-open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
  .nav__toggle.is-open span:nth-child(2) { opacity: 0; }
  .nav__toggle.is-open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
}

@media (max-width: 880px) {
  .hero { padding: 64px 0 80px; }
  .hero__inner { grid-template-columns: 1fr; gap: 44px; }
  .portrait { max-width: 320px; }
  .facet { grid-template-columns: 1fr; gap: 10px; }
  .skillcat { grid-template-columns: 1fr; gap: 12px; }
  .cred { grid-template-columns: 1fr; gap: 8px; }
  .grid--3, .grid--2 { grid-template-columns: 1fr; }
  .project--featured { grid-template-columns: 1fr; gap: 28px; }
  .job { grid-template-columns: 1fr; gap: 14px; padding: 32px 0; }
  .section { padding: 80px 0; }
}

@media (max-width: 680px) {
  body { font-size: 16px; }
  .section { padding: 64px 0; }
  .hero__stats { gap: 32px; flex-wrap: wrap; }
  .stat-row { gap: 22px; }
  .footer__inner { flex-direction: column; }
}