/* akshat-website — design system from DESIGN.md (D-001–D-014 confirmed)
   Monochrome editorial: ink/gray/mist/paper, Raleway 300 display, Roboto body,
   hairline structure, no shadows, sharp-or-pill radii. */

:root {
  --color-ink: #000000;
  --color-gray: #808080;
  --color-mist: #e6e6e6;
  --color-paper: #ffffff;

  --font-display: 'Raleway', ui-sans-serif, system-ui, sans-serif;
  --font-body: 'Roboto', ui-sans-serif, system-ui, sans-serif;

  --text-display: clamp(56px, 9vw, 112px);
  --text-heading: clamp(40px, 6vw, 64px);
  --text-heading-sm: 32px;
  --text-subheading: 22px;
  --text-body: 17px;
  --text-body-sm: 15px;
  --text-kicker: 12px;
  --text-caption: 13px;

  --space-1: 4px;  --space-2: 8px;   --space-3: 12px;  --space-4: 16px;
  --space-6: 24px; --space-8: 32px;  --space-12: 48px; --space-16: 64px;
  --space-24: 96px; --space-32: 128px;

  --page-max-width: 1080px;
  --radius-pill: 9999px;

  --ease-glide: cubic-bezier(0.19, 1, 0.22, 1);
  --duration-hover: 0.15s;
  --duration-reveal: 0.8s;
}

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

html { -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-body);
  font-size: var(--text-body);
  font-weight: 400;
  line-height: 1.6;
  color: var(--color-ink);
}

/* Aurora atmosphere (D-021) — media layer only, never UI fill.
   Fixed pseudo-element instead of background-attachment for iOS. */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background: #000 url('/assets/aurora-moon.jpg') center / cover no-repeat;
}

/* Even scrim so white type holds contrast over any patch of sky */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background: rgba(0, 0, 0, 0.35);
}

/* Solid paper surfaces floating over the sky */
.sheet { background: var(--color-paper); }

.container {
  max-width: var(--page-max-width);
  margin: 0 auto;
  padding-left: var(--space-6);
  padding-right: var(--space-6);
}

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

a:focus-visible, button:focus-visible {
  outline: 2px solid var(--color-ink);
  outline-offset: 3px;
}

/* ---------- Navigation ---------- */

.site-header {
  border-bottom: 1px solid var(--color-mist);
  background: var(--color-paper);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-4);
  padding-top: var(--space-3);
  padding-bottom: var(--space-3);
}

.wordmark {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 400;
  color: var(--color-ink);
  text-decoration: none;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.site-nav { display: flex; gap: var(--space-6); }

.site-nav a {
  font-size: 14px;
  white-space: nowrap;
  color: var(--color-gray);
  text-decoration: none;
  transition: color var(--duration-hover) ease;
}

.site-nav a:hover { color: var(--color-ink); }

.site-nav a[aria-current="page"] { color: var(--color-ink); font-weight: 500; }

/* ---------- Typography ---------- */

h1, h2 { font-family: var(--font-display); font-weight: 400; }

.display {
  font-size: var(--text-display);
  font-weight: 300;
  line-height: 1.02;
  letter-spacing: -0.02em;
  text-transform: uppercase;
}

.page-title {
  font-size: var(--text-heading);
  font-weight: 300;
  line-height: 1.08;
  letter-spacing: -0.015em;
}

h2 {
  font-size: var(--text-heading-sm);
  line-height: 1.15;
  letter-spacing: -0.01em;
}

h3 {
  font-family: var(--font-body);
  font-size: var(--text-body);
  font-weight: 500;
  line-height: 1.4;
}

.kicker {
  font-family: var(--font-body);
  font-size: var(--text-kicker);
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-gray);
  margin-bottom: var(--space-3);
}

.lede {
  font-family: var(--font-display);
  font-size: var(--text-subheading);
  line-height: 1.3;
}

p + p { margin-top: var(--space-4); }

.muted { color: var(--color-gray); }

main p a, main li a, main h3 a {
  color: var(--color-ink);
  text-decoration: underline;
  text-decoration-color: var(--color-gray);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: text-decoration-color var(--duration-hover) ease;
}

main p a:hover, main li a:hover, main h3 a:hover { text-decoration-color: var(--color-ink); }

main h3 a { font-weight: 400; }

/* ---------- Sections ---------- */

.section { padding-top: var(--space-24); padding-bottom: var(--space-24); }

.section + .section, .divided { border-top: 1px solid var(--color-mist); }

.section-head { margin-bottom: var(--space-12); }

.prose { max-width: 720px; }
.prose h2 { margin-bottom: var(--space-4); }

/* ---------- Hero (telemetry layout, D-015) ---------- */

.hero {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: calc(100svh - 65px);
  padding-top: var(--space-12);
  padding-bottom: var(--space-6);
}

.hero h1 { margin-bottom: var(--space-8); }

.hero .lede { margin-bottom: var(--space-6); }

.hero-copy { max-width: 620px; }

.hero-actions {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  flex-wrap: wrap;
  margin-top: var(--space-8);
}

[data-parallax] {
  transition: transform 0.45s var(--ease-glide);
  will-change: transform;
}

.telemetry {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: var(--space-4);
  margin-top: var(--space-8);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-mist);
}

.telemetry .kicker { margin-bottom: 0; }

/* Three zones side by side (D-015): the US clocks are the pitch, IST is context. */
.clocks { display: flex; gap: var(--space-12); }

.clock-cell { display: flex; flex-direction: column; gap: var(--space-1); }

.clock {
  font-family: var(--font-body);
  font-size: var(--text-subheading);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
  color: var(--color-ink);
  margin: 0;
}

.hours-note {
  text-transform: none;
  letter-spacing: 0.02em;
  font-size: var(--text-caption);
  max-width: 340px;
  text-align: right;
}

/* ---------- Availability line (hiring signal) ---------- */

.availability {
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-mist);
  max-width: 560px;
}

.availability a, .availability span {
  font-family: var(--font-body);
  font-size: var(--text-kicker);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  line-height: 1.7;
}

.availability a { text-decoration: none; }

.availability-arrow {
  display: inline-block;
  margin-left: var(--space-2);
  transition: transform 0.3s var(--ease-glide);
}

.availability a:hover .availability-arrow { transform: translateX(6px); }

.sky .availability { border-top-color: rgba(255, 255, 255, 0.3); }

.sky .availability a { color: var(--color-paper); }

/* Page-header variant for inner pages */
.page-head { padding-top: var(--space-24); padding-bottom: var(--space-24); }
.page-head .page-title { margin-bottom: var(--space-6); }
.page-head .prose p:first-of-type { margin-top: 0; }

/* ---------- Sky zones — white type over the aurora (D-021) ---------- */

.sky, .sky h1, .sky h2 { color: var(--color-paper); }

.sky .kicker { color: var(--color-mist); }

.sky .lede a, .sky p a {
  color: var(--color-paper);
  text-decoration-color: rgba(255, 255, 255, 0.4);
}

.sky .lede a:hover, .sky p a:hover { text-decoration-color: var(--color-paper); }

.sky .btn {
  color: var(--color-paper);
  border-color: rgba(255, 255, 255, 0.4);
}

.sky .btn:hover { background: transparent; border-color: var(--color-paper); }

.sky .telemetry { border-top-color: rgba(255, 255, 255, 0.3); }

.sky .telemetry .clock { color: var(--color-paper); }

/* ---------- Reveal motion (D-010) ---------- */

.reveal { animation: fade-up var(--duration-reveal) var(--ease-glide) both; }

/* Default state is VISIBLE; the animation enhances from there. The hidden start
   state is gated on .js (set by an inline head script) so no-JS, a failed
   script, or a headless capture never leaves the page blank. */
.js [data-reveal] {
  opacity: 0;
  /* Perspective settle (D-020): fade-up with a 3deg rotateX that lands flat */
  transform: perspective(1200px) rotateX(3deg) translateY(20px);
  transform-origin: 50% 100%;
  transition: opacity var(--duration-reveal) var(--ease-glide),
              transform var(--duration-reveal) var(--ease-glide);
}

.js [data-reveal].in { opacity: 1; transform: none; }

@keyframes fade-up {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: none; }
}

@media (prefers-reduced-motion: reduce) {
  .reveal { animation: none; }
  .js [data-reveal], [data-reveal] { opacity: 1; transform: none; transition: none; }
  * { transition-duration: 0.01ms !important; }
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-block;
  font-family: var(--font-body);
  font-size: var(--text-body-sm);
  font-weight: 400;
  color: var(--color-ink);
  background: transparent;
  border: 1px solid var(--color-ink);
  border-radius: var(--radius-pill);
  padding: 12px 28px;
  text-decoration: none;
  transition: background var(--duration-hover) ease, color var(--duration-hover) ease;
}

.btn:hover { background: var(--color-ink); color: var(--color-paper); }

/* ---------- Definition rows (Work: What I build) ---------- */

.def-rows { border-top: 1px solid var(--color-mist); }

.def-row {
  display: grid;
  grid-template-columns: minmax(200px, 300px) minmax(0, 1fr);
  gap: var(--space-8);
  padding: var(--space-8) 0;
  border-bottom: 1px solid var(--color-mist);
}

.def-row h3 {
  font-family: var(--font-display);
  font-size: var(--text-subheading);
  font-weight: 400;
  line-height: 1.25;
}

.def-row p { color: var(--color-gray); margin: 0; }

.def-dates {
  display: block;
  font-family: var(--font-body);
  font-size: var(--text-kicker);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-gray);
  margin-top: var(--space-2);
}

/* ---------- Tool stack (keyword bait, kept deliberately quiet) ---------- */

.stack-note { padding-top: var(--space-16); padding-bottom: var(--space-16); }

.tool-line {
  font-size: var(--text-body-sm);
  color: var(--color-gray);
  max-width: 720px;
}

/* ---------- Big link rows (Home: onward links) ---------- */

.link-rows { border-top: 1px solid var(--color-mist); }

.link-row {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr) auto;
  gap: var(--space-6);
  align-items: baseline;
  padding: var(--space-8) 0;
  border-bottom: 1px solid var(--color-mist);
  text-decoration: none;
  color: var(--color-ink);
}

.link-row .idx {
  font-size: var(--text-kicker);
  letter-spacing: 0.14em;
  color: var(--color-gray);
}

.link-row .title {
  font-family: var(--font-display);
  font-size: var(--text-heading-sm);
  font-weight: 300;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.link-row .arrow {
  font-family: var(--font-body);
  font-size: var(--text-subheading);
  color: var(--color-gray);
  transition: transform 0.3s var(--ease-glide), color var(--duration-hover) ease;
}

.link-row .note {
  grid-column: 2;
  color: var(--color-gray);
  font-size: var(--text-body-sm);
}

.link-row:hover .arrow { transform: translateX(8px); color: var(--color-ink); }

/* ---------- Tag pills ---------- */

.tags { display: flex; flex-wrap: wrap; gap: var(--space-2); margin-top: var(--space-6); }

.tag {
  font-size: var(--text-caption);
  color: var(--color-gray);
  border: 1px solid var(--color-mist);
  border-radius: var(--radius-pill);
  padding: 6px 14px;
  transition: border-color var(--duration-hover) ease;
}

.tag:hover { border-color: var(--color-gray); }

/* ---------- Specimen grid (Beyond Work) ---------- */

.specimen-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-top: 1px solid var(--color-mist);
  border-left: 1px solid var(--color-mist);
}

.specimen {
  border-right: 1px solid var(--color-mist);
  border-bottom: 1px solid var(--color-mist);
  padding: var(--space-12) var(--space-8);
}

.specimen h2 { margin-bottom: var(--space-4); }

.specimen p { color: var(--color-gray); }

/* ---------- Directory rows (Contact) ---------- */

.dir-rows { border-top: 1px solid var(--color-mist); }

.dir-row {
  display: grid;
  grid-template-columns: minmax(140px, 240px) minmax(0, 1fr);
  gap: var(--space-2) var(--space-8);
  padding: var(--space-8) 0;
  border-bottom: 1px solid var(--color-mist);
}

.dir-row .channel {
  font-family: var(--font-display);
  font-size: var(--text-subheading);
  font-weight: 400;
  line-height: 1.25;
}

.dir-row .dir-link {
  font-size: var(--text-body);
}

.dir-row p { color: var(--color-gray); margin: 0; font-size: var(--text-body-sm); }

/* ---------- Inverse band (D-001, D-014: max one per page) ---------- */

/* Band = a window back to the sky (aurora media behind text, D-021) */
.band {
  position: relative;
  background: var(--color-ink) url('/assets/aurora-burst.jpg') center / cover no-repeat;
  color: var(--color-paper);
}

.band::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
}

.band .container { position: relative; }

.band .kicker { color: var(--color-gray); }

.band .container { padding-top: var(--space-24); padding-bottom: var(--space-24); }

.band h2 { margin-bottom: var(--space-4); }

.band p { color: var(--color-paper); max-width: 620px; }

.band p a {
  color: var(--color-paper);
  text-decoration: underline;
  text-decoration-color: rgba(255, 255, 255, 0.4);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: text-decoration-color var(--duration-hover) ease;
}

.band p a:hover { text-decoration-color: var(--color-paper); }

.band .btn { color: var(--color-paper); border-color: rgba(255, 255, 255, 0.3); }

.band .btn:hover { background: transparent; border-color: var(--color-paper); }

.band .hero-actions { margin-top: var(--space-8); }

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

.site-footer {
  border-top: 1px solid var(--color-mist);
  background: var(--color-paper);
  padding-top: var(--space-12);
  padding-bottom: var(--space-12);
}

.site-footer .container {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: var(--space-4) var(--space-8);
}

.site-footer .kicker { margin-bottom: 0; }

.footer-links { display: flex; flex-wrap: wrap; gap: var(--space-4) var(--space-6); }

.footer-links a {
  font-size: var(--text-caption);
  color: var(--color-gray);
  text-decoration: none;
  transition: color var(--duration-hover) ease;
}

.footer-links a:hover { color: var(--color-ink); }

/* ---------- Responsive ---------- */

@media (max-width: 720px) {
  .site-nav { gap: var(--space-4); flex-wrap: wrap; }
  .site-nav a { font-size: 13px; }
  .section, .page-head { padding-top: var(--space-16); padding-bottom: var(--space-16); }
  .hero { min-height: 0; padding-top: var(--space-12); }
  .telemetry { flex-direction: column; align-items: flex-start; gap: var(--space-4); margin-top: var(--space-12); }
  .clocks { gap: var(--space-8); }
  .clock { font-size: var(--text-body); }
  .hours-note { text-align: left; max-width: none; }
  .band .container { padding-top: var(--space-16); padding-bottom: var(--space-16); }
  .def-row, .dir-row { grid-template-columns: 1fr; gap: var(--space-2); }
  .specimen-grid { grid-template-columns: 1fr; }
  .specimen { padding: var(--space-8) var(--space-6); }
  .link-row { grid-template-columns: 40px minmax(0, 1fr) auto; }
}