/* ============================================================
   Prasad Chaskar — prasadchaskar.com
   Swiss International Style: Space Grotesk + IBM Plex, red accent,
   hairline grid rules.
   ============================================================ */

/* Self-hosted fonts (previously loaded from Google Fonts CDN) */
@font-face {
  font-family: 'Space Grotesk';
  src: url('fonts/SpaceGrotesk-Medium.woff2') format('woff2');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Space Grotesk';
  src: url('fonts/SpaceGrotesk-SemiBold.woff2') format('woff2');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Space Grotesk';
  src: url('fonts/SpaceGrotesk-Bold.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'IBM Plex Sans';
  src: url('fonts/IBMPlexSans-Regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'IBM Plex Sans';
  src: url('fonts/IBMPlexSans-Medium.woff2') format('woff2');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'IBM Plex Sans';
  src: url('fonts/IBMPlexSans-SemiBold.woff2') format('woff2');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'IBM Plex Mono';
  src: url('fonts/IBMPlexMono-Regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'IBM Plex Mono';
  src: url('fonts/IBMPlexMono-Medium.woff2') format('woff2');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'IBM Plex Mono';
  src: url('fonts/IBMPlexMono-SemiBold.woff2') format('woff2');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

:root {
  --ink: #111111;
  --ink-soft: #4a4a4a;
  --paper: #ffffff;
  --paper-dim: #f7f7f5;
  --line: #d9d9d4;
  --red: #d6001c;
  --red-soft: #f4d9dc;

  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'IBM Plex Sans', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  --grid-gap: 1px;
  --max-width: 1180px;
  --pad: clamp(20px, 4vw, 64px);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation: none !important; transition: none !important; }
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

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

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--red);
  outline-offset: 3px;
}

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

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding-left: var(--pad);
  padding-right: var(--pad);
}

.hairline {
  border: none;
  border-top: 1px solid var(--line);
  margin: 0;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--red);
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0;
}

h2 {
  font-size: clamp(28px, 3.4vw, 40px);
  margin-top: 10px;
}

p { margin: 0 0 1em 0; }

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 0.02em;
}

.logo .dot { color: var(--red); }

.nav-links {
  display: flex;
  gap: 28px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.03em;
}

.nav-links a {
  padding: 4px 0;
  border-bottom: 1px solid transparent;
}

.nav-links a:hover { border-bottom-color: var(--red); }

.nav-cta {
  border: 1px solid var(--ink);
  padding: 8px 16px;
  font-family: var(--font-mono);
  font-size: 13px;
}

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

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--ink);
  width: 40px;
  height: 40px;
  font-family: var(--font-mono);
}

@media (max-width: 780px) {
  .nav-links, .nav-cta { display: none; }
  .nav-toggle { display: block; }
  .site-header.open .nav-links {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    padding: 20px var(--pad) 24px;
    gap: 16px;
  }
  .site-header.open .nav-cta {
    display: inline-block;
    margin: 0 var(--pad) 20px;
  }
}

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

.hero {
  padding: 72px 0 0;
}

.hero-top {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.hero .eyebrow { margin-bottom: 18px; }

.hero h1 {
  font-size: clamp(34px, 5.4vw, 60px);
  line-height: 1.06;
  max-width: 18ch;
}

.hero-meta {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-soft);
  margin-top: 20px;
}

.hero-lede {
  font-size: clamp(16px, 1.5vw, 19px);
  color: var(--ink-soft);
  max-width: 62ch;
  margin-top: 26px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  border: 1px solid var(--ink);
}

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

.btn-ghost:hover { background: var(--paper-dim); }

.hero-tags {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-soft);
  margin-top: 34px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 6px 0;
}
.hero-tags span:not(:last-child)::after {
  content: "·";
  margin: 0 10px;
  color: var(--line);
}

/* ---------- Milestone track ---------- */

.milestone-track {
  margin-top: 56px;
  border-top: 1px solid var(--line);
}

.milestone-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-soft);
  padding: 18px 0 0;
}

.milestone-label strong { color: var(--ink); }

.track-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  margin-top: 18px;
}

.track-item {
  padding: 22px 20px 26px;
  border-right: 1px solid var(--line);
  position: relative;
}
.track-item:last-child { border-right: none; }

.track-item::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 28px;
  height: 2px;
  background: var(--red);
}

.track-kicker {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--red);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.track-value {
  font-family: var(--font-display);
  font-size: clamp(17px, 1.6vw, 20px);
  font-weight: 600;
  margin-top: 10px;
  line-height: 1.3;
}

@media (max-width: 780px) {
  .track-grid { grid-template-columns: 1fr 1fr; }
  .track-item:nth-child(2n) { border-right: none; }
  .track-item:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
}

/* ---------- Section shell ---------- */

section { padding: 88px 0; }
section + section { border-top: 1px solid var(--line); }

.section-head {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 48px;
  align-items: end;
}

.section-head .eyebrow { margin-bottom: 12px; }

.section-note {
  color: var(--ink-soft);
  font-size: 15px;
  max-width: 46ch;
  justify-self: end;
  text-align: left;
}

@media (max-width: 780px) {
  .section-head { grid-template-columns: 1fr; }
  .section-note { justify-self: start; }
}

/* ---------- About ---------- */

.about-grid {
  display: grid;
  grid-template-columns: 0.72fr 1.28fr;
  gap: 64px;
  align-items: start;
}

.portrait-col {
  position: relative;
  max-width: 300px;
}

.portrait-frame {
  position: relative;
  aspect-ratio: 3 / 3.4;
  background: var(--paper-dim);
  border: 1px solid var(--line);
  overflow: hidden;
}

/* Optional alternate treatment — add class="portrait-frame round" in the
   HTML to switch to a circular crop instead of the default hard-edged
   rectangle. Off by default to stay consistent with the page's sharp
   hairline-grid language elsewhere (milestone track, section rules). */
.portrait-frame.round {
  aspect-ratio: 1 / 1;
  border-radius: 50%;
}
.portrait-frame.round::before { display: none; }
.portrait-frame.round + .portrait-caption { padding-left: 4px; }

/* Red corner tab — echoes the milestone-track signature mark */
.portrait-frame::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 34px;
  height: 3px;
  background: var(--red);
  z-index: 2;
}

.portrait-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  position: relative;
  z-index: 1;
}

/* Shown automatically (via a small inline onerror handler on the <img>)
   when no photo has been uploaded yet, so the section reads as a
   deliberate placeholder rather than a broken image. */
.portrait-frame .placeholder-mark,
.portrait-frame .placeholder-caption { display: none; }
.portrait-frame.no-photo img { display: none; }
.portrait-frame.no-photo {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
}
.portrait-frame.no-photo .placeholder-mark {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 15px;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
  border: 1px solid var(--line);
  padding: 8px 16px;
}
.portrait-frame.no-photo .placeholder-caption {
  display: block;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.03em;
  color: var(--ink-soft);
  text-align: center;
  max-width: 70%;
}

.portrait-caption {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-top: 14px;
  padding-top: 10px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--ink-soft);
  letter-spacing: 0.02em;
}
.portrait-caption .loc::before {
  content: "◍ ";
  color: var(--red);
}

.about-copy {
  padding-top: 6px;
}

.about-copy .lede {
  font-size: 19px;
  line-height: 1.5;
  color: var(--ink);
  padding-left: 18px;
  border-left: 2px solid var(--red);
}

.about-copy p.support {
  color: var(--ink-soft);
  font-size: 15.5px;
  margin-top: 22px;
}

.stat-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  align-items: stretch;
  margin-top: 44px;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--line);
}

.stat {
  display: flex;
  flex-direction: column;
  padding: 20px 20px 22px 0;
  border-right: 1px solid var(--line);
}
.stat:first-child { padding-left: 0; }
.stat:last-child { border-right: none; padding-right: 0; }

/* Fixed-height number slot: reserves room for up to two lines so a
   short value like "FDA" and a longer one like "10+ Years" both push
   their label down to the exact same baseline, keeping the row aligned
   no matter how much text each stat holds. */
.stat-num {
  display: flex;
  align-items: flex-end;
  min-height: 2.2em;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.1vw, 26px);
  font-weight: 600;
  color: var(--red);
  line-height: 1.1;
}
.stat-label {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--ink-soft);
  margin-top: 10px;
  line-height: 1.45;
}

@media (max-width: 780px) {
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .portrait-col { max-width: 220px; }
  .portrait-frame { aspect-ratio: 3 / 3.4; }
  .stat-row { grid-template-columns: 1fr 1fr; }
  .stat:nth-child(2n) { border-right: none; }
  .stat:nth-child(-n+2) { border-bottom: 1px solid var(--line); padding-bottom: 20px; }
  .stat:nth-child(2) { padding-left: 20px; }
}

/* ---------- Focus areas ---------- */

.focus-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.focus-item {
  padding: 32px 32px 34px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.focus-num {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--red);
}

.focus-item h3 {
  font-size: 19px;
  margin-top: 14px;
}

.focus-item p {
  color: var(--ink-soft);
  margin-top: 12px;
  font-size: 14.5px;
}

.checklist {
  margin-top: 40px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 32px;
  font-family: var(--font-mono);
  font-size: 13.5px;
}
.checklist li { list-style: none; padding-left: 20px; position: relative; }
.checklist li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--red);
}
.checklist { padding: 0; margin: 40px 0 0; }

@media (max-width: 780px) {
  .focus-grid { grid-template-columns: 1fr; }
  .checklist { grid-template-columns: 1fr; }
}

/* ---------- Testimonials ---------- */

.testimonial-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.testimonial {
  background: var(--paper);
  padding: 34px;
  display: flex;
  flex-direction: column;
}

.quote-mark {
  font-family: var(--font-display);
  font-size: 44px;
  color: var(--red-soft);
  line-height: 1;
}

.testimonial p.quote {
  font-size: 15.5px;
  color: var(--ink);
  flex-grow: 1;
  margin-top: 8px;
}

.testimonial-attr {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12.5px;
}
.testimonial-attr strong { display: block; font-family: var(--font-body); font-size: 14.5px; margin-bottom: 3px; }

@media (max-width: 780px) {
  .testimonial-grid { grid-template-columns: 1fr; }
}

/* ---------- Track record ---------- */

.timeline {
  border-top: 1px solid var(--line);
}

.timeline-row {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 24px;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}

.timeline-date {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--red);
}

.timeline-role h3 {
  font-size: 18px;
}
.timeline-org {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-soft);
  margin-top: 4px;
}
.timeline-desc {
  color: var(--ink-soft);
  font-size: 14.5px;
  margin-top: 12px;
  max-width: 68ch;
}

@media (max-width: 780px) {
  .timeline-row { grid-template-columns: 1fr; gap: 8px; }
}

/* ---------- Expertise ---------- */

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

.expertise-col h4 {
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--red);
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
  margin: 0 0 14px;
}

.expertise-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 2;
}

@media (max-width: 900px) {
  .expertise-grid { grid-template-columns: 1fr 1fr; gap: 32px 24px; }
}
@media (max-width: 520px) {
  .expertise-grid { grid-template-columns: 1fr; }
}

/* ---------- Projects (GitHub feed) ---------- */

.repo-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.repo-card {
  background: var(--paper);
  padding: 26px;
  display: flex;
  flex-direction: column;
  min-height: 170px;
}

.repo-card h3 {
  font-size: 16px;
  font-family: var(--font-mono);
}

.repo-card p {
  color: var(--ink-soft);
  font-size: 13.5px;
  margin-top: 10px;
  flex-grow: 1;
}

.repo-meta {
  display: flex;
  gap: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-soft);
  margin-top: 16px;
}

.repo-meta .lang::before {
  content: "●";
  color: var(--red);
  margin-right: 5px;
}

.repo-loading, .repo-error {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-soft);
  padding: 40px 0;
  text-align: center;
  grid-column: 1 / -1;
}

@media (max-width: 900px) {
  .repo-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 600px) {
  .repo-grid { grid-template-columns: 1fr; }
}

.projects-footer {
  margin-top: 28px;
  font-family: var(--font-mono);
  font-size: 13px;
}
.projects-footer a { border-bottom: 1px solid var(--ink); }
.projects-footer a:hover { color: var(--red); border-color: var(--red); }

/* ---------- Engagement ---------- */

.engagement-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.engagement-item {
  padding: 30px 28px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.engagement-item h3 {
  font-size: 16.5px;
}
.engagement-item p {
  color: var(--ink-soft);
  font-size: 14px;
  margin-top: 10px;
}

.rate-banner {
  margin-top: 1px;
  background: var(--ink);
  color: var(--paper);
  padding: 26px 28px;
  font-family: var(--font-mono);
  font-size: 14.5px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  justify-content: space-between;
}
.rate-banner strong { color: #fff; font-family: var(--font-display); font-size: 17px; }

@media (max-width: 780px) {
  .engagement-grid { grid-template-columns: 1fr; }
}

/* ---------- Contact ---------- */

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
}

.contact-links {
  font-family: var(--font-mono);
  font-size: 14.5px;
}

.contact-links a {
  display: block;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}
.contact-links a:hover { color: var(--red); }

.contact-note {
  margin-top: 26px;
  color: var(--ink-soft);
  font-size: 14px;
}

form.contact-form {
  display: grid;
  gap: 18px;
}

.field label {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 8px;
}

.field input,
.field textarea {
  width: 100%;
  border: 1px solid var(--line);
  background: var(--paper-dim);
  padding: 12px 14px;
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--ink);
}
.field input:focus,
.field textarea:focus {
  border-color: var(--ink);
  background: var(--paper);
}

.field textarea { resize: vertical; min-height: 120px; }

.form-status {
  font-family: var(--font-mono);
  font-size: 13px;
  min-height: 18px;
}
.form-status.ok { color: #1a7a3c; }
.form-status.err { color: var(--red); }

@media (max-width: 780px) {
  .contact-grid { grid-template-columns: 1fr; }
}

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

footer {
  border-top: 1px solid var(--line);
  padding: 28px 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--ink-soft);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

footer a:hover { color: var(--red); }

/* ---------- Utility ---------- */

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--ink);
  color: var(--paper);
  padding: 10px 16px;
  z-index: 100;
  font-family: var(--font-mono);
  font-size: 13px;
}
.skip-link:focus { left: var(--pad); }