/* ============================================================
   Tosh Bhasin — personal site
   Design tokens
   ============================================================ */

:root {
  /* Color */
  --paper: #EFEDE4;       /* warm institutional paper */
  --paper-soft: #F6F4EC;  /* lighter panel tone, used sparingly */
  --ink: #1B222A;         /* near-black navy-charcoal, primary text */
  --ink-soft: #4E5A63;    /* secondary text */
  --ink-faint: #8B9199;   /* tertiary / meta text */
  --brass: #8C6A34;       /* accent — institutional brass/seal */
  --brass-deep: #6E5327;  /* hover state for brass */
  --teal: #2E5259;        /* secondary accent — systems / data */
  --line: #D6D0C0;        /* hairline rule */
  --line-strong: #B9B29C;

  /* Type */
  --serif: "Fraunces", Georgia, "Times New Roman", serif;
  --sans: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  /* Layout */
  --measure: 680px;
  --wide: 1080px;
  --gutter: clamp(20px, 5vw, 64px);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

a {
  color: var(--teal);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}
a:hover { color: var(--brass-deep); }

::selection { background: var(--brass); color: var(--paper-soft); }

/* ---------- Layout shells ---------- */

.wrap {
  max-width: var(--wide);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.prose {
  max-width: var(--measure);
}

section {
  padding: clamp(48px, 8vw, 96px) 0;
}

section + section { border-top: 1px solid var(--line); }

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

header.site-header {
  padding: 28px 0;
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 1.15rem;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: 0.01em;
}
.logo:hover { color: var(--ink); }

nav.site-nav ul {
  list-style: none;
  display: flex;
  gap: clamp(16px, 3vw, 32px);
  margin: 0;
  padding: 0;
}

nav.site-nav a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.95rem;
}
nav.site-nav a:hover { color: var(--brass-deep); }
nav.site-nav a.current { color: var(--ink); font-weight: 500; }

/* ---------- Hero ---------- */

.hero .kicker {
  font-size: 1rem;
  color: var(--ink-soft);
  margin: 0 0 20px;
}

.hero h1 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(2.1rem, 4.6vw, 3.6rem);
  line-height: 1.12;
  letter-spacing: -0.01em;
  margin: 0 0 28px;
  max-width: 15ch;
}

.hero .lede {
  font-size: 1.15rem;
  color: var(--ink-soft);
  max-width: 62ch;
  margin: 0 0 36px;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
}

.btn {
  display: inline-block;
  padding: 12px 22px;
  border-radius: 3px;
  font-size: 0.95rem;
  text-decoration: none;
  border: 1px solid var(--ink);
}

.btn-primary {
  background: var(--ink);
  color: var(--paper);
}
.btn-primary:hover { background: var(--brass-deep); border-color: var(--brass-deep); color: var(--paper); }

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line-strong);
}
.btn-ghost:hover { border-color: var(--ink); color: var(--ink); }

/* ---------- Stat band ---------- */

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.stat .num {
  font-family: var(--serif);
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  color: var(--ink);
  line-height: 1;
}

.stat .label {
  margin-top: 8px;
  font-size: 0.88rem;
  color: var(--ink-soft);
  max-width: 22ch;
}

@media (max-width: 800px) {
  .stats { grid-template-columns: repeat(2, 1fr); row-gap: 36px; }
}

/* ---------- Section heading pattern ---------- */

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: clamp(28px, 4vw, 44px);
  flex-wrap: wrap;
}

.section-head h2 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(1.5rem, 2.6vw, 2rem);
  margin: 0;
}

.section-head .note {
  color: var(--ink-faint);
  font-size: 0.92rem;
  max-width: 40ch;
}

/* ---------- Roadmap / sequence (4-phase) ---------- */

.roadmap {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
}

.roadmap .phase {
  padding: 28px 24px 0 0;
  border-right: 1px solid var(--line);
}
.roadmap .phase:last-child { border-right: none; padding-right: 0; }

.roadmap .phase .n {
  font-family: var(--serif);
  font-size: 1.6rem;
  color: var(--brass);
  display: block;
  margin-bottom: 10px;
}

.roadmap .phase h3 {
  font-size: 1.02rem;
  margin: 0 0 10px;
  color: var(--ink);
}

.roadmap .phase p {
  font-size: 0.92rem;
  color: var(--ink-soft);
  margin: 0;
}

@media (max-width: 860px) {
  .roadmap { grid-template-columns: 1fr; }
  .roadmap .phase { border-right: none; border-bottom: 1px solid var(--line); padding: 24px 0; }
  .roadmap .phase:last-child { border-bottom: none; }
}

/* ---------- Track record (case blocks) ---------- */

.case {
  padding: 32px 0;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 32px;
}
.case:first-of-type { border-top: none; }

.case .meta .org {
  font-weight: 600;
  color: var(--ink);
  font-size: 1.02rem;
}
.case .meta .role {
  color: var(--ink-soft);
  font-size: 0.9rem;
  margin-top: 4px;
}
.case .meta .when {
  color: var(--ink-faint);
  font-size: 0.85rem;
  margin-top: 10px;
}

.case .body p { margin: 0 0 12px; color: var(--ink-soft); }
.case .body p:last-child { margin-bottom: 0; }
.case .body strong { color: var(--ink); }

@media (max-width: 720px) {
  .case { grid-template-columns: 1fr; gap: 12px; }
}

/* ---------- Writing / article list ---------- */

.article-row {
  display: block;
  padding: 26px 0;
  border-top: 1px solid var(--line);
  text-decoration: none;
  color: inherit;
}
.article-row:first-of-type { border-top: none; }

.article-row .a-date {
  font-size: 0.85rem;
  color: var(--ink-faint);
}

.article-row h3 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 1.25rem;
  margin: 8px 0 8px;
  color: var(--ink);
}

.article-row:hover h3 { color: var(--brass-deep); }

.article-row .a-dek {
  color: var(--ink-soft);
  font-size: 0.98rem;
  max-width: 60ch;
  margin: 0;
}

.tag {
  display: inline-block;
  font-size: 0.78rem;
  color: var(--teal);
  border: 1px solid var(--line-strong);
  border-radius: 3px;
  padding: 2px 8px;
  margin-top: 12px;
}

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

footer.site-footer {
  padding: 48px 0 64px;
}

.contact-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 48px;
  justify-content: space-between;
  align-items: flex-start;
}

.contact-grid h2 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin: 0 0 12px;
  max-width: 16ch;
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 0.98rem;
}

.fine-print {
  margin-top: 56px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  color: var(--ink-faint);
  font-size: 0.85rem;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- Article page ---------- */

.article-header {
  padding: clamp(48px, 8vw, 80px) 0 20px;
}

.article-header .back {
  font-size: 0.9rem;
  color: var(--ink-faint);
  text-decoration: none;
}
.article-header .back:hover { color: var(--brass-deep); }

.article-header h1 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(1.9rem, 4vw, 2.8rem);
  line-height: 1.18;
  margin: 24px 0 16px;
  max-width: 20ch;
}

.article-meta {
  color: var(--ink-faint);
  font-size: 0.9rem;
}

.article-body {
  padding-bottom: 64px;
}

.article-body p, .article-body ul {
  color: var(--ink-soft);
  font-size: 1.08rem;
  margin: 0 0 22px;
}

.article-body h2 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 1.5rem;
  color: var(--ink);
  margin: 40px 0 18px;
}

.article-body blockquote {
  margin: 32px 0;
  padding-left: 24px;
  border-left: 2px solid var(--brass);
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.2rem;
  color: var(--ink);
}

.article-body strong { color: var(--ink); }

@media (max-width: 720px) {
  .stats { grid-template-columns: 1fr 1fr; }
}