/* karansohi.com — styles
   Design tokens come from the approved Direction B mockup:
   paper background, navy hero, amber highlight, rust numerals,
   Instrument Serif for display type, Manrope for everything else. */

:root {
  --paper: #f4f1ea;
  --paper-2: #ebe6da;
  --navy: #14213d;
  --navy-soft: #d9d4c7;
  --ink: #14213d;
  --text: #3b4356;
  --muted: #5b6478;
  --muted-2: #8b93a7;
  --amber: #f59e0b;
  --rust: #c2410c;

  --serif: "Instrument Serif", Georgia, "Times New Roman", serif;
  --sans: "Manrope", "Helvetica Neue", Arial, sans-serif;

  --wrap: 1280px;
  --gutter: clamp(20px, 5vw, 80px);
}

/* ---------- Reset & base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; border-bottom: 1px solid var(--rust); }
a:hover { color: var(--rust); }
a:focus-visible, button:focus-visible, label:focus-visible {
  outline: 3px solid var(--amber); outline-offset: 3px;
}
h1, h2, h3 { margin: 0; font-weight: 400; text-wrap: balance; }
p { margin: 0; }
code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.92em; }

.wrap { max-width: var(--wrap); margin-inline: auto; padding-inline: var(--gutter); }
.skip {
  position: absolute; left: -999px; top: 8px; background: var(--amber); color: var(--navy);
  padding: 8px 12px; border: 0; z-index: 10;
}
.skip:focus { left: 8px; }

.serif { font-family: var(--serif); }
.eyebrow {
  font-size: 12.5px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted);
}

/* ---------- Masthead / nav ---------- */
.masthead { background: var(--navy); color: var(--paper); }
.masthead a { border-bottom: 0; }
.masthead a:hover { color: var(--amber); }

.nav {
  display: flex; align-items: center; justify-content: space-between;
  padding-block: 28px; position: relative;
}
.brand { font-family: var(--serif); font-size: 22px; }
.nav-links {
  list-style: none; margin: 0; padding: 0;
  display: flex; gap: 32px; align-items: center; font-size: 14px; font-weight: 600;
}
.nav-cta { height: 36px; padding: 0 16px; display: inline-flex; align-items: center; border: 1px solid currentColor; }
.nav-toggle, .nav-burger { display: none; }

@media (max-width: 760px) {
  .nav { padding-block: 20px; }
  .nav-burger {
    display: flex; flex-direction: column; justify-content: space-between;
    width: 24px; height: 18px; cursor: pointer;
  }
  .nav-burger span { height: 2px; background: currentColor; display: block; }
  .nav-links {
    display: none; position: absolute; left: 0; right: 0; top: 100%;
    flex-direction: column; align-items: flex-start; gap: 0;
    background: var(--navy); padding: 8px 0 20px; border-top: 1px solid rgba(244,241,234,0.2);
    font-size: 16px; z-index: 5;
  }
  .nav-links li { width: 100%; }
  .nav-links a { display: block; padding: 12px 0; }
  .nav-toggle:checked ~ .nav-links { display: flex; }
}

/* ---------- Hero ---------- */
.hero {
  display: grid; grid-template-columns: 1.35fr 1fr; gap: 64px; align-items: end;
  padding-block: 44px 72px;
}
.hero h1 {
  font-family: var(--serif);
  font-size: clamp(54px, 7.2vw, 104px);
  line-height: 0.96; letter-spacing: -0.015em;
}
.hero h1 em { font-style: normal; color: var(--amber); }
.hero-aside { display: flex; flex-direction: column; gap: 24px; padding-bottom: 10px; }
.hero-lede { font-size: 18px; line-height: 1.55; max-width: 400px; color: var(--navy-soft); }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-creds {
  display: flex; gap: 12px; flex-wrap: wrap;
  font-size: 12px; font-weight: 600; color: var(--amber); letter-spacing: 0.04em; text-transform: uppercase;
}
.hero-creds .sep { color: var(--muted-2); }

.btn {
  height: 48px; padding: 0 24px; display: inline-flex; align-items: center;
  font-weight: 700; font-size: 15px; border: 1px solid transparent;
}
.btn-primary { background: var(--amber); color: var(--navy); }
.btn-primary:hover { background: #ffb020; color: var(--navy); }
.btn-ghost { border-color: currentColor; font-weight: 500; }

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; gap: 28px; padding-block: 24px 40px; }
  .hero-aside { padding-bottom: 0; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { justify-content: center; }
  .hero-creds { flex-direction: column; gap: 4px; font-size: 11.5px; }
  .hero-creds .sep { display: none; }
}

/* ---------- Skills strip ---------- */
.strip {
  border-bottom: 1px solid var(--navy);
  font-size: 13px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase;
}
.strip ul {
  list-style: none; margin: 0; padding: 16px 0;
  display: flex; justify-content: space-between; gap: 10px 20px; flex-wrap: wrap;
  font-size: 12px;
}
@media (min-width: 1200px) { .strip ul { font-size: 13px; } }
@media (max-width: 760px) {
  .strip ul { justify-content: flex-start; gap: 6px 14px; padding-block: 12px; font-size: 11.5px; }
  .strip li + li::before { content: "·"; margin-right: 14px; color: var(--muted-2); }
}

/* ---------- Sections ---------- */
.section { padding-block: 64px 0; }
.section-head { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; margin-bottom: 12px; flex-wrap: wrap; }
.section h2 { font-family: var(--serif); font-size: clamp(36px, 4vw, 48px); line-height: 1; }
.section-head a { font-size: 14px; font-weight: 600; }

/* ---------- Work list ---------- */
.work-row {
  display: grid; grid-template-columns: 120px 1fr 320px; gap: 36px; align-items: center;
  padding-block: 36px; border-top: 1px solid var(--navy);
}
.work-row:last-child { border-bottom: 1px solid var(--navy); }
.work-row--earlier { grid-template-columns: 120px 1fr 200px; }
.work-num { font-family: var(--serif); font-size: 72px; line-height: 0.9; color: var(--rust); }
.work-row--earlier .work-num { color: var(--muted-2); }
.work-body { display: flex; flex-direction: column; gap: 12px; }
.work-body h3 { font-size: 28px; font-weight: 700; letter-spacing: -0.01em; }
.work-row--earlier .work-body h3 { font-size: 22px; }
.work-body p { font-size: 16px; line-height: 1.55; color: var(--text); max-width: 560px; text-wrap: pretty; }
.work-links { display: flex; gap: 20px; flex-wrap: wrap; font-size: 14px; font-weight: 600; }
.work-row--earlier .work-links { justify-self: end; }

/* Inline architecture sketch */
.diagram { background: var(--paper-2); border-radius: 4px; padding: 18px; overflow: hidden; display: flex; flex-direction: column; gap: 10px; }
.diagram-row { display: flex; align-items: center; gap: 6px; }
.diagram .box {
  display: inline-flex; align-items: center; justify-content: center; height: 32px; padding: 0 10px;
  background: var(--paper); border: 1px solid var(--navy); font-size: 11.5px; font-weight: 600; white-space: nowrap;
}
.diagram .box--hi { background: var(--navy); color: var(--paper); }
.diagram .box--dashed { border-style: dashed; }
.diagram .arr { flex: 1 1 12px; min-width: 12px; height: 1px; background: var(--navy); position: relative; }
.diagram .arr::after {
  content: ""; position: absolute; right: 0; top: -3.5px;
  border: 4px solid transparent; border-left: 5px solid var(--navy);
}
.diagram .cap { font-family: var(--serif); font-style: italic; font-size: 13px; color: #6b6555; }

@media (max-width: 900px) {
  .work-row, .work-row--earlier { grid-template-columns: 1fr; gap: 12px; padding-block: 24px; align-items: start; }
  .work-num { font-size: 44px; }
  .work-body h3 { font-size: 22px; }
  .work-body p { font-size: 15px; }
  .work-row--earlier .work-links { justify-self: start; }
  .diagram { padding: 14px; gap: 8px; }
  .diagram .box { height: 28px; padding: 0 9px; font-size: 11px; }
  .diagram .cap { display: none; }
  .diagram-row--indent { padding-left: 0 !important; }
}

/* ---------- Skills ---------- */
.skills { display: grid; grid-template-columns: 300px 1fr; gap: 64px; }
.skills-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px 48px; font-size: 16px; line-height: 1.6; }
.skills-grid .eyebrow { margin-bottom: 6px; }
@media (max-width: 900px) {
  .skills { grid-template-columns: 1fr; gap: 18px; }
  .skills-grid { grid-template-columns: 1fr; gap: 14px; font-size: 15px; }
}

/* ---------- About / contact ---------- */
.about { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; padding-block: 72px 56px; }
.about-col { display: flex; flex-direction: column; gap: 16px; }
.about-col p { font-size: 16px; line-height: 1.6; color: var(--text); text-wrap: pretty; }
.about-creds { display: flex; gap: 28px; flex-wrap: wrap; font-size: 14px; font-weight: 600; }
.contact-email { font-family: var(--serif); font-size: clamp(24px, 3vw, 32px); }
.contact-links { display: flex; gap: 24px; flex-wrap: wrap; font-size: 14px; font-weight: 600; }
@media (max-width: 900px) {
  .about { grid-template-columns: 1fr; gap: 32px; padding-block: 40px 32px; }
  .about-col p { font-size: 15px; }
}

/* ---------- Footer ---------- */
.footer { padding-block: 0 40px; }
.footer-row {
  border-top: 1px solid var(--navy); padding-top: 20px;
  display: flex; justify-content: space-between; gap: 8px 24px; flex-wrap: wrap;
  font-size: 12.5px; color: var(--muted); font-weight: 500;
}
.footer-build code { font-size: 12px; }
@media (max-width: 760px) { .footer-row { flex-direction: column; padding-top: 16px; } }

/* ---------- Case study pages (used from step 2 onward) ---------- */
.page-head { padding-block: 40px 56px; display: flex; flex-direction: column; gap: 16px; }
.case-diagram { max-width: 720px; padding-top: 8px; }
.page-head h1 { font-family: var(--serif); font-size: clamp(40px, 5.5vw, 72px); line-height: 1; letter-spacing: -0.015em; }
.page-head .hero-lede { max-width: 640px; }
.prose { max-width: 720px; padding-block: 48px 64px; font-size: 17px; line-height: 1.65; color: var(--text); }
.prose h2 { font-family: var(--serif); font-size: 36px; color: var(--ink); margin: 40px 0 12px; }
.prose h3 { font-size: 20px; font-weight: 700; color: var(--ink); margin: 28px 0 8px; }
.prose p { margin-block: 0 16px; }
.prose ul, .prose ol { padding-left: 22px; margin-block: 0 16px; }
.prose li + li { margin-top: 6px; }
.prose table { width: 100%; border-collapse: collapse; font-size: 15px; margin-block: 8px 24px; }
.prose th, .prose td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--paper-2); vertical-align: top; }
.prose th { font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }
.prose pre { background: var(--navy); color: var(--paper); padding: 16px 18px; overflow-x: auto; font-size: 14px; border-radius: 4px; }
.prose code { background: var(--paper-2); padding: 1px 5px; border-radius: 3px; }
.prose pre code { background: none; padding: 0; }
.prose figure { margin: 24px 0; }
.prose figcaption { font-family: var(--serif); font-style: italic; font-size: 15px; color: var(--muted); margin-top: 8px; }
.table-scroll { overflow-x: auto; }