/* ============================================================
   Personal site — Venkata Mani Kumar
   Quiet, premium, mono+serif, acid-lime accent
   ============================================================ */

:root {
  --bg: #0b0d09;
  --bg-elev: #11140f;
  --bg-elev-2: #181c15;
  --line: #1f231b;
  --line-2: #2a2f25;
  --ink: #ecebe5;
  --ink-dim: #b3b4ac;
  --ink-mute: #7c7e76;
  --ink-faint: #4a4d45;
  --accent: #c8f04a;
  --accent-2: #d7ff5e;
  --accent-dim: #6a8020;
  --warn: #f5a623;

  --font-sans: "Geist", ui-sans-serif, system-ui, sans-serif;
  --font-mono: "Geist Mono", ui-monospace, "SF Mono", monospace;
  --font-serif: "Instrument Serif", "Times New Roman", serif;

  --radius: 10px;
  --radius-sm: 6px;

  --max: 1280px;
  --pad: clamp(20px, 4vw, 56px);
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-feature-settings: "ss01", "cv11";
  overflow-x: hidden;
}

/* Subtle film grain over everything */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1000;
  opacity: 0.035;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='180' height='180'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 1  0 0 0 0 1  0 0 0 0 1  0 0 0 1 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
  mix-blend-mode: overlay;
}

a { color: inherit; text-decoration: none; }

::selection { background: var(--accent); color: #0b0d09; }

/* ============================================================
   Reusable
   ============================================================ */
.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding-inline: var(--pad);
}

.mono { font-family: var(--font-mono); font-feature-settings: "ss03"; }
.serif { font-family: var(--font-serif); }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-mute);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.eyebrow::before {
  content: "";
  width: 6px; height: 6px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 12px var(--accent);
}

.section-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-mute);
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 32px;
}
.section-label .num { color: var(--accent); }
.section-label .rule {
  flex: 1;
  height: 1px;
  background: linear-gradient(to right, var(--line-2), transparent);
}

/* ============================================================
   Nav
   ============================================================ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  background: rgba(11, 13, 9, 0.65);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 14px var(--pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
}
.brand-mark {
  width: 22px; height: 22px;
  border: 1px solid var(--accent);
  border-radius: 4px;
  display: grid;
  place-items: center;
  color: var(--accent);
  font-size: 10px;
  font-weight: 600;
  position: relative;
  overflow: hidden;
}
.brand-mark::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--accent);
  opacity: 0.08;
}
.brand-mark span { position: relative; z-index: 1; }
.brand-name { color: var(--ink); }
.brand-name .sep { color: var(--ink-faint); margin: 0 6px; }
.brand-name .role { color: var(--ink-mute); }

.nav-links {
  display: flex;
  gap: 4px;
  list-style: none;
}
.nav-links a {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--ink-dim);
  padding: 8px 12px;
  border-radius: 6px;
  transition: color .2s, background .2s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.nav-links a:hover { color: var(--ink); background: var(--bg-elev); }
.nav-links a .idx { color: var(--ink-faint); font-size: 10px; }

.nav-cta {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  padding: 8px 14px;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  color: var(--ink);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: border-color .2s, background .2s;
}
.nav-cta:hover { border-color: var(--accent); background: rgba(200, 240, 74, 0.05); }
.nav-cta .dot {
  width: 6px; height: 6px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--accent);
  animation: pulse 2.2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.85); }
}

@media (max-width: 720px) {
  .nav-links { display: none; }
  .brand-name .role { display: none; }
}

/* ============================================================
   Hero
   ============================================================ */
.hero {
  padding-top: 120px;
  padding-bottom: 80px;
  position: relative;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
}

.hero-meta {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 28px;
}
.hero-meta .row {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-mute);
}
.hero-meta .row .lbl { color: var(--ink-faint); width: 64px; }
.hero-meta .row .val { color: var(--ink-dim); }
.hero-meta .live {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent);
}
.hero-meta .live::before {
  content: "";
  width: 6px; height: 6px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse 1.6s ease-in-out infinite;
}

h1.hero-title {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(48px, 7vw, 88px);
  line-height: 0.98;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 28px;
}
h1.hero-title em {
  font-style: italic;
  color: var(--accent);
}
h1.hero-title .ws {
  font-family: var(--font-mono);
  font-size: 0.32em;
  letter-spacing: 0.05em;
  vertical-align: middle;
  color: var(--ink-faint);
  margin-left: 8px;
}

.hero-sub {
  font-size: 18px;
  line-height: 1.5;
  color: var(--ink-dim);
  max-width: 46ch;
  margin-bottom: 36px;
  text-wrap: pretty;
}
.hero-sub b { color: var(--ink); font-weight: 500; }

.hero-ctas {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: transform .2s, background .2s, border-color .2s;
  border: 1px solid transparent;
}
.btn-primary {
  background: var(--accent);
  color: #0b0d09;
  font-weight: 500;
}
.btn-primary:hover { background: var(--accent-2); transform: translateY(-1px); }
.btn-primary .arrow { transition: transform .2s; }
.btn-primary:hover .arrow { transform: translateX(3px); }

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line-2);
}
.btn-ghost:hover { border-color: var(--ink-mute); background: var(--bg-elev); }

.hero-stats {
  margin-top: 56px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  border-top: 1px solid var(--line);
  padding-top: 32px;
  max-width: 520px;
}
.hero-stats .stat .n {
  font-family: var(--font-serif);
  font-size: 36px;
  line-height: 1;
  color: var(--ink);
  margin-bottom: 8px;
}
.hero-stats .stat .n em { color: var(--accent); font-style: italic; }
.hero-stats .stat .lbl {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-mute);
}

/* ============================================================
   Terminal artifact (mounted by React)
   ============================================================ */
.agent-mount {
  width: 100%;
  min-height: 480px;
}

/* ============================================================
   Section frame
   ============================================================ */
.section {
  padding-block: 120px;
  position: relative;
}
.section + .section { border-top: 1px solid var(--line); }

h2.section-title {
  font-family: var(--font-serif);
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.015em;
  color: var(--ink);
  margin-bottom: 16px;
  max-width: 22ch;
}
h2.section-title em { color: var(--accent); font-style: italic; }

.section-lede {
  font-size: 17px;
  color: var(--ink-dim);
  max-width: 54ch;
  text-wrap: pretty;
}

/* ============================================================
   About
   ============================================================ */
.about-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 80px;
  margin-top: 56px;
}
@media (max-width: 960px) { .about-grid { grid-template-columns: 1fr; gap: 48px; } }

.about-body p {
  font-size: 18px;
  line-height: 1.65;
  color: var(--ink-dim);
  margin-bottom: 20px;
  text-wrap: pretty;
}
.about-body p b { color: var(--ink); font-weight: 500; }
.about-body p .acc { color: var(--accent); }
.about-body .pull {
  font-family: var(--font-serif);
  font-size: 26px;
  line-height: 1.35;
  color: var(--ink);
  padding: 28px 0 28px 28px;
  border-left: 2px solid var(--accent);
  margin: 32px 0;
  font-style: italic;
}

.about-side {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.fact {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 20px;
  background: var(--bg-elev);
}
.fact .k {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 6px;
}
.fact .v { color: var(--ink); font-size: 16px; }
.fact .v a { border-bottom: 1px dotted var(--ink-faint); }
.fact .v a:hover { color: var(--accent); border-color: var(--accent); }

/* ============================================================
   Skills
   ============================================================ */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  margin-top: 64px;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
@media (max-width: 960px) { .skills-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 540px) { .skills-grid { grid-template-columns: 1fr; } }

.skill-cell {
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 28px 24px;
  min-height: 220px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  position: relative;
  transition: background .25s;
}
.skill-cell:hover { background: var(--bg-elev); }
.skill-cell.feat { background: linear-gradient(135deg, rgba(200, 240, 74, 0.05), transparent 70%); }

.skill-cell .num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-faint);
}
.skill-cell .name {
  font-family: var(--font-serif);
  font-size: 22px;
  line-height: 1.15;
  color: var(--ink);
  letter-spacing: -0.01em;
}
.skill-cell.feat .name { color: var(--accent); }
.skill-cell .desc {
  font-size: 13px;
  color: var(--ink-mute);
  line-height: 1.5;
  margin-top: -4px;
}
.skill-cell .chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: auto;
}
.chip {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-dim);
  padding: 4px 8px;
  border: 1px solid var(--line-2);
  border-radius: 4px;
  background: rgba(255,255,255,0.01);
}
.skill-cell.feat .chip { border-color: rgba(200, 240, 74, 0.25); color: var(--ink); }

/* ============================================================
   Projects
   ============================================================ */
.flag-project {
  margin-top: 56px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-elev);
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  position: relative;
}
@media (max-width: 900px) { .flag-project { grid-template-columns: 1fr; } }

.flag-meta {
  padding: 40px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.flag-meta .feat-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.flag-meta .feat-tag::before {
  content: "★";
  font-size: 12px;
}
.flag-meta h3 {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: 36px;
  line-height: 1.1;
  letter-spacing: -0.015em;
  color: var(--ink);
}
.flag-meta p {
  color: var(--ink-dim);
  font-size: 16px;
  line-height: 1.6;
  text-wrap: pretty;
}
.flag-meta .impact-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  border-top: 1px solid var(--line);
  padding-top: 20px;
}
.flag-meta .impact-row .n {
  font-family: var(--font-serif);
  font-size: 24px;
  color: var(--accent);
}
.flag-meta .impact-row .l {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-top: 4px;
}
.flag-meta .stack {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.flag-cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  margin-top: 4px;
  transition: gap .2s;
}
.flag-cta:hover { gap: 16px; }
.flag-cta svg { transition: transform .2s; }
.flag-cta:hover svg { transform: translateX(2px); }

/* Visual panel for PolicyAI — a stylized architecture diagram */
.flag-visual {
  background:
    radial-gradient(circle at 70% 30%, rgba(200, 240, 74, 0.06), transparent 60%),
    var(--bg);
  position: relative;
  min-height: 460px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px;
  border-left: 1px solid var(--line);
  overflow: hidden;
}
@media (max-width: 900px) { .flag-visual { border-left: 0; border-top: 1px solid var(--line); } }

.flag-visual::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 24px 24px;
  mask-image: radial-gradient(circle at center, black 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(circle at center, black 30%, transparent 80%);
}

/* Sub-section label (Live & open source / Past work) */
.sub-label {
  margin-top: 56px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-dim);
  padding-bottom: 16px;
}
.sub-label-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent);
}
.sub-label-dot.dim { background: var(--ink-faint); box-shadow: none; }

/* secondary projects grid */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  margin-top: 16px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
@media (max-width: 900px) { .projects-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .projects-grid { grid-template-columns: 1fr; } }

.proj {
  background: var(--bg);
  padding: 28px 24px;
  min-height: 240px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: background .25s;
  cursor: pointer;
}
.proj:hover { background: var(--bg-elev); }
.proj .ptag {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-mute);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.ptag-status {
  font-size: 9px;
  padding: 2px 6px;
  border-radius: 3px;
  letter-spacing: 0.1em;
  font-weight: 500;
  border: 1px solid var(--line-2);
  color: var(--ink-dim);
  background: rgba(255,255,255,0.02);
}
.ptag-status.wip {
  color: var(--accent);
  border-color: rgba(200, 240, 74, 0.3);
  background: rgba(200, 240, 74, 0.06);
  font-size: 6px;
  padding: 0 5px;
  display: inline-flex;
  align-items: center;
  line-height: 16px;
}
.ptag-status.npm {
  color: #f5a623;
  border-color: rgba(245, 166, 35, 0.25);
  background: rgba(245, 166, 35, 0.06);
}
.proj h4 .ext {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--ink-faint);
  transition: color .2s, transform .2s;
  margin-left: 4px;
  vertical-align: 2px;
}
.proj:hover h4 .ext { color: var(--accent); transform: translate(2px, -2px); }
.proj h4 {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 400;
  line-height: 1.15;
  color: var(--ink);
  letter-spacing: -0.01em;
}
.proj p {
  font-size: 13px;
  color: var(--ink-dim);
  line-height: 1.55;
  flex: 1;
}
.proj .pstack {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

/* ============================================================
   Experience timeline
   ============================================================ */
.xp {
  margin-top: 56px;
  position: relative;
}
.xp::before {
  content: "";
  position: absolute;
  left: 132px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(to bottom, transparent, var(--line-2) 5%, var(--line-2) 95%, transparent);
}
@media (max-width: 720px) { .xp::before { left: 0; } }

.xp-row {
  display: grid;
  grid-template-columns: 132px 1fr;
  gap: 32px;
  padding: 32px 0;
  border-bottom: 1px solid var(--line);
  position: relative;
}
.xp-row:last-child { border-bottom: 0; }
@media (max-width: 720px) {
  .xp-row { grid-template-columns: 1fr; gap: 12px; padding-left: 24px; }
}

.xp-row::after {
  content: "";
  position: absolute;
  left: 128px;
  top: 38px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--bg);
  border: 1px solid var(--ink-mute);
  transition: background .25s, border-color .25s, box-shadow .25s;
}
.xp-row:hover::after { background: var(--accent); border-color: var(--accent); box-shadow: 0 0 12px var(--accent); }
.xp-row.current::after { background: var(--accent); border-color: var(--accent); box-shadow: 0 0 14px var(--accent); }
@media (max-width: 720px) { .xp-row::after { left: -4px; } }

.xp-time {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-mute);
  letter-spacing: 0.04em;
  padding-top: 4px;
}
.xp-time .now { color: var(--accent); }

.xp-body h3 {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: 24px;
  line-height: 1.2;
  color: var(--ink);
  letter-spacing: -0.01em;
}
.xp-body .org {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-dim);
  margin-top: 4px;
  letter-spacing: 0.02em;
}
.xp-body .org .loc { color: var(--ink-mute); }
.xp-body ul {
  list-style: none;
  margin-top: 16px;
  display: grid;
  gap: 8px;
}
.xp-body li {
  font-size: 14.5px;
  color: var(--ink-dim);
  line-height: 1.55;
  padding-left: 18px;
  position: relative;
  text-wrap: pretty;
}
.xp-body li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 12px;
  top: 2px;
}
.xp-body li b { color: var(--ink); font-weight: 500; }

/* ============================================================
   Contact / footer
   ============================================================ */
.contact {
  padding: 120px 0 80px;
  border-top: 1px solid var(--line);
}
.contact-inner {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 64px;
  align-items: end;
}
@media (max-width: 800px) { .contact-inner { grid-template-columns: 1fr; gap: 40px; } }

.contact h2 {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(48px, 7vw, 88px);
  line-height: 0.95;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.contact h2 em { color: var(--accent); font-style: italic; }
.contact h2 a {
  border-bottom: 2px solid var(--ink-faint);
  transition: border-color .2s, color .2s;
}
.contact h2 a:hover { color: var(--accent); border-color: var(--accent); }

.contact-aside {
  display: flex;
  flex-direction: column;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 13px;
}
.contact-aside .row {
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--ink-dim);
}
.contact-aside .row .k { color: var(--ink-faint); width: 50px; }
.contact-aside a:hover { color: var(--accent); }

footer {
  border-top: 1px solid var(--line);
  padding: 28px 0;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-mute);
}
footer .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
footer .social { display: flex; gap: 16px; }
footer .social a { color: var(--ink-dim); transition: color .2s; }
footer .social a:hover { color: var(--accent); }