/* ==========================================================================
   Ranjith Varatharajan — personal site
   Single stylesheet. No frameworks, no webfonts, no JavaScript, no motion.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Tokens
   -------------------------------------------------------------------------- */

:root {
  /* Monospace stack: preferred faces first, then the platform's own.
     Nothing is downloaded — the page paints on the first byte. */
  --font: "JetBrains Mono", "IBM Plex Mono", "SFMono-Regular", ui-monospace,
          "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;

  /* Monochrome ramp. Ink is off-black; pure #000 reads harsh on white. */
  --bg:        #ffffff;
  --ink:       #111111;   /* primary text                    */
  --ink-mid:   #4a4a4a;   /* body copy, slightly recessed    */
  --ink-soft:  #767676;   /* labels, meta — AA on white      */
  --rule:      #e6e6e6;   /* hairline dividers               */
  --rule-firm: #cfcfcf;   /* button border                   */
  --select:    #f1e4d0;

  /* One accent, used sparingly — index numbers, hovers, the live dot. */
  --accent:      #a06a2c;
  --accent-soft: #e8d9c2;

  /* Type scale — a deliberate ramp, not browser defaults. */
  --t-name:    clamp(1.5rem, 1.1rem + 2vw, 2.125rem);
  --t-role:    clamp(0.9375rem, 0.88rem + 0.3vw, 1.0625rem);
  --t-body:    clamp(0.875rem, 0.83rem + 0.22vw, 0.9375rem);
  --t-small:   0.8125rem;
  --t-label:   0.6875rem;

  /* Vertical rhythm — one base unit, everything is a multiple. */
  --unit:      0.5rem;
  --gap-block: calc(var(--unit) * 9);   /* 4.5rem between sections */
  --measure:   36rem;                    /* ~64ch of monospace copy */
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg:        #0d0d0d;
    --ink:       #ededed;
    --ink-mid:   #bdbdbd;
    --ink-soft:  #8c8c8c;
    --rule:      #232323;
    --rule-firm: #3a3a3a;
    --select:    #2e2013;
    --accent:      #d3a35f;
    --accent-soft: #3a2c18;
  }
}

/* --------------------------------------------------------------------------
   2. Reset
   -------------------------------------------------------------------------- */

*,
*::before,
*::after { box-sizing: border-box; }

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

body,
h1, h2, p, dl, dd, dt, figure {
  margin: 0;
}

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

/* --------------------------------------------------------------------------
   3. Base
   -------------------------------------------------------------------------- */

body {
  background: var(--bg);
  color: var(--ink-mid);
  font-family: var(--font);
  font-size: var(--t-body);
  font-weight: 400;
  line-height: 1.75;
  letter-spacing: 0.005em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-variant-ligatures: none;      /* keep -> and >= literal in mono faces */
  position: relative;
}

/* Faint radial vignette — depth without a visible gradient edge. */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background: radial-gradient(ellipse 60vw 40vh at 50% -5%, var(--accent-soft) 0%, transparent 70%);
  opacity: 0.35;
  pointer-events: none;
  z-index: 0;
}

/* Hairline brand bar — the one full-bleed accent moment on the page. */
body::after {
  content: "";
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(to right, transparent, var(--accent) 50%, transparent);
  opacity: 0.6;
  pointer-events: none;
  z-index: 1;
}

.page { position: relative; z-index: 1; }

@media print {
  body::before, body::after { display: none; }
}

.page {
  /* measure + label column + gutter, so body copy holds ~64 characters */
  max-width: calc(var(--measure) + 11rem);
  margin-inline: auto;
  padding: calc(var(--unit) * 9) 1.5rem calc(var(--unit) * 8);
}

@media (min-width: 40em) {
  .page { padding: calc(var(--unit) * 18) 3rem calc(var(--unit) * 12); }
}

/* --------------------------------------------------------------------------
   4. Links
   -------------------------------------------------------------------------- */

a {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.22em;
  text-decoration-color: var(--rule-firm);
  transition: color 0.2s ease, text-decoration-color 0.2s ease;
}

a:hover {
  color: var(--accent);
  text-decoration-color: var(--accent);
}

a:focus-visible,
.button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 1px;
}

@media (prefers-reduced-motion: reduce) {
  a, .button, .button::before, .button__meta, .button__icon { transition: none !important; }
  .button:hover { transform: none; }
}

/* --------------------------------------------------------------------------
   5. Accessibility helpers
   -------------------------------------------------------------------------- */

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
  z-index: 10;
  padding: 0.5rem 0.75rem;
  background: var(--bg);
  color: var(--ink);
  border: 1px solid var(--ink);
  text-decoration: none;
}

/* --------------------------------------------------------------------------
   6. Masthead
   -------------------------------------------------------------------------- */

.masthead .eyebrow {
  display: flex;
  align-items: center;
  gap: 0.6em;
  font-size: var(--t-label);
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
}

.masthead .eyebrow .dot-live {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.masthead h1 {
  margin-top: calc(var(--unit) * 2.5);
  font-size: var(--t-name);
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -0.025em;   /* tighten at display size */
  color: var(--ink);
  text-wrap: balance;
}

.masthead .role {
  margin-top: calc(var(--unit) * 2);
  font-size: var(--t-role);
  font-weight: 400;
  line-height: 1.5;
  letter-spacing: 0.01em;
  color: var(--ink);
}

.masthead .tagline {
  margin-top: calc(var(--unit) * 1);
  max-width: var(--measure);
  font-size: var(--t-body);
  line-height: 1.65;
  color: var(--ink-soft);
  text-wrap: pretty;
}

.masthead .meta {
  margin-top: calc(var(--unit) * 4);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: calc(var(--unit) * 1.5);
  font-size: var(--t-label);
  line-height: 1.9;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.masthead .meta .dot {
  color: var(--rule-firm);
}

.masthead .badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  padding: 0.35em 0.75em;
  border: 1px solid var(--accent-soft);
  border-radius: 100px;
  color: var(--accent);
  letter-spacing: 0.1em;
}

/* --------------------------------------------------------------------------
   7. Sections
   -------------------------------------------------------------------------- */

.block {
  margin-top: var(--gap-block);
  padding-top: calc(var(--unit) * 5);
  border-top: 1px solid transparent;
  border-image: linear-gradient(to right, var(--rule) 0%, var(--rule) 40%, transparent 100%) 1;
}

.section-title {
  font-size: var(--t-label);
  font-weight: 500;
  line-height: 1.6;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.section-title .idx {
  display: inline-block;
  min-width: 2.75em;
  color: var(--accent);
  letter-spacing: 0.14em;
  font-variant-numeric: tabular-nums;
}

.section-body {
  margin-top: calc(var(--unit) * 3);
  max-width: var(--measure);
}

/* On wide screens the label sits in its own column, body copy stays aligned
   to a single left edge across every section. */
@media (min-width: 52em) {
  .block {
    display: grid;
    grid-template-columns: 9rem 1fr;
    column-gap: 2rem;
  }
  .section-title .idx { min-width: 0; margin-right: 0.9em; }
  .section-body { margin-top: 0; }
}

.section-body p + p {
  margin-top: calc(var(--unit) * 2.5);
}

.section-body p {
  text-wrap: pretty;
}

/* --------------------------------------------------------------------------
   8. Contact list
   -------------------------------------------------------------------------- */

.contact {
  display: flex;
  flex-direction: column;
  margin-inline: calc(var(--unit) * -1.5);
}

.contact__row {
  display: grid;
  grid-template-columns: 5.5rem minmax(0, 1fr);
  align-items: baseline;
  padding: calc(var(--unit) * 1.1) calc(var(--unit) * 1.5);
  border-radius: 5px;
  position: relative;
  transition: background 0.2s ease;
}

.contact__row::before {
  content: "";
  position: absolute;
  left: 0;
  top: 20%;
  bottom: 20%;
  width: 2px;
  border-radius: 2px;
  background: var(--accent);
  transform: scaleY(0);
  transition: transform 0.2s ease;
}

.contact__row:hover {
  background: var(--select);
}

.contact__row:hover::before {
  transform: scaleY(1);
}

.contact dt {
  font-size: var(--t-label);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.contact dd {
  font-size: var(--t-small);
  line-height: 1.6;
  overflow-wrap: anywhere;
}

.contact dd a {
  text-decoration-color: var(--rule-firm);
}

.contact dd .plain {
  color: var(--ink);
}

.contact dd .go {
  display: inline-block;
  margin-left: 0.5em;
  color: var(--accent);
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.contact__row:hover .go {
  opacity: 1;
  transform: translateX(0);
}

@media (max-width: 24em) {
  .contact__row {
    grid-template-columns: minmax(0, 1fr);
    row-gap: calc(var(--unit) * 0.5);
    padding-block: calc(var(--unit) * 1.5);
  }
}

@media (prefers-reduced-motion: reduce) {
  .contact__row, .contact__row::before, .contact dd .go { transition: none !important; }
}

/* --------------------------------------------------------------------------
   9. Résumé block
   -------------------------------------------------------------------------- */

.resume-note {
  color: var(--ink-soft);
  font-size: var(--t-small);
}

.button {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 2.5rem;
  margin-top: calc(var(--unit) * 3);
  padding: calc(var(--unit) * 1.75) calc(var(--unit) * 2.5);
  border: 1px solid var(--rule-firm);
  color: var(--ink);
  text-decoration: none;
  font-size: var(--t-small);
  letter-spacing: 0.04em;
  overflow: hidden;
  transition: border-color 0.25s ease, color 0.25s ease,
              transform 0.25s ease, box-shadow 0.25s ease;
}

.button__label {
  display: inline-flex;
  align-items: center;
  gap: 0.65em;
}

.button__icon {
  flex: none;
  transform: translateY(1px);
  transition: transform 0.25s cubic-bezier(0.65, 0, 0.35, 1);
}

.button:hover .button__icon {
  transform: translateY(2px);
}

.button::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--ink);
  transform: translateX(-101%);
  transition: transform 0.3s cubic-bezier(0.65, 0, 0.35, 1);
  z-index: 0;
}

.button__label,
.button__meta {
  position: relative;
  z-index: 1;
}

.button__meta {
  font-size: var(--t-label);
  letter-spacing: 0.16em;
  color: var(--ink-soft);
  transition: color 0.25s ease;
}

.button:hover {
  border-color: var(--ink);
  color: var(--bg);
  transform: translateY(-2px);
  box-shadow: 0 10px 24px -12px rgb(0 0 0 / 0.35);
}

.button:hover::before {
  transform: translateX(0);
}

.button:active {
  transform: translateY(-1px);
}

.button:hover .button__meta {
  color: var(--bg);
  opacity: 0.7;
}

@media (max-width: 30em) {
  .button {
    display: flex;
    width: 100%;
  }
}

/* --------------------------------------------------------------------------
   10. Colophon
   -------------------------------------------------------------------------- */

.colophon {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem 2rem;
  margin-top: var(--gap-block);
  padding-top: calc(var(--unit) * 4);
  border-top: 1px solid transparent;
  border-image: linear-gradient(to right, var(--rule) 0%, var(--rule) 40%, transparent 100%) 1;
  font-size: var(--t-label);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.colophon a {
  color: var(--ink-soft);
  text-decoration-color: var(--rule);
}

.colophon a:hover {
  color: var(--accent);
  text-decoration-color: var(--accent);
}

/* --------------------------------------------------------------------------
   11. Print — the page should photocopy cleanly too
   -------------------------------------------------------------------------- */

@media print {
  :root {
    --bg: #fff; --ink: #000; --ink-mid: #222;
    --ink-soft: #555; --rule: #ccc; --rule-firm: #999;
    --accent: #000; --accent-soft: #ccc;
  }
  .page { max-width: none; padding: 0; }
  .button { border-color: #999; box-shadow: none; transform: none; }
  .button::before { display: none; }
  .contact dd .go { display: none; }
  .contact__row::before { display: none; }
  a { text-decoration: none; }
  .contact dd a::after { content: " (" attr(href) ")"; font-size: 0.75em; color: #666; }
}

/* --------------------------------------------------------------------------
   12. Preferences — high contrast
   -------------------------------------------------------------------------- */

@media (prefers-contrast: more) {
  :root {
    --ink-mid: var(--ink);
    --ink-soft: #5a5a5a;
    --rule-firm: var(--ink);
  }
}