/* Portfolio: Vinay Matroju
   Dark by default, light theme via [data-theme="light"] on <html>. One accent. */

:root {
  --bg: #0f1318;
  --bg-raised: #161c24;
  --line: #27303b;
  --text: #e6e9ee;
  --text-dim: #9aa5b3;
  --accent: #93a5ff;
  --accent-ink: #0f1318;
  --focus: #93a5ff;

  --font-display: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-body: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-code: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;

  --gutter: 16px;
  --measure: 66ch;
}

:root[data-theme="light"] {
  --bg: #f7f8fa;
  --bg-raised: #ffffff;
  --line: #d9dee5;
  --text: #151a21;
  --text-dim: #566170;
  --accent: #3446c9;
  --accent-ink: #ffffff;
  --focus: #3446c9;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 72px;
  -webkit-text-size-adjust: 100%;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }

:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip {
  position: absolute;
  left: var(--gutter);
  top: -60px;
  background: var(--accent);
  color: var(--accent-ink);
  padding: 8px 14px;
  border-radius: 6px;
  z-index: 20;
}
.skip:focus { top: 10px; }

/* ---------- top bar ---------- */

.bar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 12px var(--gutter);
  background: var(--bg);
  border-bottom: 1px solid var(--line);
}

.bar-name {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
  margin-right: auto;
  white-space: nowrap;
}

.bar nav { display: flex; gap: 18px; }
.bar nav a {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.92rem;
}
.bar nav a:hover { color: var(--text); }

.toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  background: transparent;
  color: var(--text-dim);
  border: 1px solid var(--line);
  border-radius: 999px;
  font: inherit;
  font-size: 0.85rem;
  cursor: pointer;
}
.toggle:hover { color: var(--text); border-color: var(--text-dim); }
.toggle-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
}

/* ---------- layout ---------- */

main,
.foot {
  max-width: 980px;
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

.hero { padding: 72px 0 56px; }

.hero-name {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.8rem, 11vw, 5.6rem);
  line-height: 1.02;
  letter-spacing: -0.035em;
  text-wrap: balance;
}

.hero-title {
  margin: 20px 0 0;
  color: var(--accent);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.05rem, 3.2vw, 1.6rem);
  line-height: 1.25;
  letter-spacing: 0.01em;
}

.hero-sub {
  margin: 14px 0 0;
  color: var(--text-dim);
  font-weight: 500;
  max-width: var(--measure);
}

.hero-lede {
  margin: 14px 0 0;
  color: var(--text-dim);
  max-width: var(--measure);
  font-size: 1.08rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 30px;
}

/* Buttons: on hover a fill wipes in from the left, the button lifts and glows. */
.btn {
  display: inline-block;
  padding: 10px 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  background-color: var(--bg-raised);
  background-image: linear-gradient(var(--accent), var(--accent));
  background-repeat: no-repeat;
  background-position: left center;
  background-size: 0% 100%;
  transition:
    background-size 0.8s cubic-bezier(0.25, 0.8, 0.25, 1),
    color 0.4s ease 0.15s,
    border-color 0.4s ease,
    transform 0.6s cubic-bezier(0.25, 0.8, 0.25, 1),
    box-shadow 0.6s ease;
}

.btn.btn-primary {
  background-color: var(--accent);
  background-image: linear-gradient(var(--text), var(--text));
  color: var(--accent-ink);
  border-color: var(--accent);
}

.btn:focus-visible {
  background-size: 100% 100%;
  color: var(--accent-ink);
  border-color: var(--accent);
}
.btn.btn-primary:focus-visible { color: var(--bg); border-color: var(--text); }

@media (hover: hover) {
  .btn:hover {
    background-size: 100% 100%;
    color: var(--accent-ink);
    border-color: var(--accent);
    transform: translateY(-3px);
    box-shadow: 0 10px 24px -8px color-mix(in srgb, var(--accent) 55%, transparent);
  }
  .btn.btn-primary:hover {
    color: var(--bg);
    border-color: var(--text);
    box-shadow: 0 10px 24px -8px color-mix(in srgb, var(--text) 35%, transparent);
  }
}

.btn:active { transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  .btn { transition: background-size 0.01s, color 0.01s; }
  .btn:hover, .btn:active { transform: none; }
}

.section {
  padding: 56px 0;
  border-top: 1px solid var(--line);
}

.section h2 {
  margin: 0 0 32px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.5rem, 4vw, 2rem);
  letter-spacing: -0.01em;
}

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

.project {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  padding: 28px 0;
  border-top: 1px solid var(--line);
}
.project:first-of-type { border-top: 0; padding-top: 0; }

.project-meta h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.4rem;
  line-height: 1.2;
}

.project-meta .when {
  margin: 6px 0 0;
  color: var(--text-dim);
  font-size: 0.9rem;
}

.project-meta .stack {
  margin: 10px 0 0;
  font-family: var(--font-code);
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--text-dim);
}

.project-body p { margin: 0 0 14px; max-width: var(--measure); }

.points {
  margin: 0 0 14px;
  padding-left: 1.2em;
  max-width: var(--measure);
}
.points li { margin-bottom: 8px; }
.points li::marker { color: var(--accent); }

.points code,
.project-body code {
  font-family: var(--font-code);
  font-size: 0.86em;
  background: var(--bg-raised);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 1px 5px;
}

/* the pipeline strip: a real sequence, so the arrows mean something */
.flow {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 0;
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
}
.flow li {
  position: relative;
  padding: 5px 12px;
  margin-right: 14px;
  font-family: var(--font-code);
  font-size: 0.78rem;
  color: var(--text);
  background: var(--bg-raised);
  border: 1px solid var(--line);
  border-radius: 6px;
}
.flow li:not(:last-child)::after {
  content: "";
  position: absolute;
  right: -14px;
  top: 50%;
  width: 14px;
  border-top: 1px solid var(--accent);
}
.flow li:last-child { margin-right: 0; border-color: var(--accent); }

.links { margin: 0; }

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

.row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2px;
  padding: 18px 0;
  border-top: 1px solid var(--line);
}
.row:first-of-type { border-top: 0; padding-top: 0; }
.row-when { color: var(--text-dim); font-size: 0.9rem; }
.row-main h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  line-height: 1.3;
}
.row-main p { margin: 4px 0 0; color: var(--text-dim); max-width: var(--measure); }

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

.skills { margin: 0; }
.skills > div {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
}
.skills > div:first-child { border-top: 0; padding-top: 0; }
.skills dt { font-weight: 600; }
.skills dd { margin: 0; color: var(--text-dim); max-width: var(--measure); }

.certs {
  margin: 24px 0 0;
  color: var(--text-dim);
  font-size: 0.92rem;
  max-width: var(--measure);
}

/* ---------- contact + footer ---------- */

.contact p { max-width: var(--measure); color: var(--text-dim); margin: 0; }

.foot {
  padding-top: 28px;
  padding-bottom: 40px;
  border-top: 1px solid var(--line);
  color: var(--text-dim);
  font-size: 0.88rem;
}
.foot p { margin: 0; }

/* ---------- wider screens ---------- */

@media (min-width: 760px) {
  :root { --gutter: 32px; }

  .project { grid-template-columns: 250px 1fr; gap: 40px; }
  .row { grid-template-columns: 250px 1fr; gap: 40px; }
  .skills > div { grid-template-columns: 250px 1fr; gap: 40px; }
}

@media (max-width: 560px) {
  .bar { gap: 12px; flex-wrap: wrap; }
  .bar nav { order: 3; width: 100%; gap: 16px; overflow-x: auto; }
  .hero { padding-top: 48px; }
}

@media print {
  .bar, .toggle, .skip { display: none; }
  body { background: #fff; color: #000; }
}