/* ============================================================
   rohitsahai.com — main stylesheet
   Fonts loaded in <head>: Cormorant Garamond + DM Sans
   ============================================================ */

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

:root {
  --ink:        #0e0f11;
  --ink-mid:    #2c2d32;
  --ink-soft:   #5a5c66;
  --ink-muted:  #9396a3;
  --paper:      #f7f5f0;
  --paper-warm: #edeae2;
  --gold:       #b8934a;
  --gold-light: #d4ae70;
  --rule:       #d8d4cc;
  --white:      #ffffff;
  --serif: 'Cormorant Garamond', Georgia, serif;
  --sans:  'DM Sans', system-ui, sans-serif;
}

html { scroll-behavior: smooth; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-weight: 300;
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
}

/* ── NAV ── */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.25rem 4rem;
  background: rgba(247,245,240,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--rule);
}
.nav-logo {
  font-family: var(--serif);
  font-size: 1.15rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--ink);
  text-decoration: none;
}
.nav-links { display: flex; gap: 2.5rem; list-style: none; }
.nav-links a {
  font-size: 0.78rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-soft);
  text-decoration: none;
  transition: color 0.2s;
}
.nav-links a:hover, .nav-links a.active { color: var(--gold); }

/* ── HERO ── */
#hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  padding-top: 5rem;
}
.hero-left {
  display: flex; flex-direction: column; justify-content: center;
  padding: 6rem 4rem;
  position: relative;
}
.hero-left::after {
  content: '';
  position: absolute; right: 0; top: 10%; bottom: 10%;
  width: 1px; background: var(--rule);
}
.hero-eyebrow {
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1.5rem;
}
.hero-name {
  font-family: var(--serif);
  font-size: clamp(3.5rem, 6vw, 5.5rem);
  font-weight: 300;
  line-height: 1.0;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin-bottom: 0.5rem;
}
.hero-name em { font-style: italic; color: var(--gold); }
.hero-title {
  font-family: var(--serif);
  font-size: 1.35rem;
  font-weight: 300;
  color: var(--ink-soft);
  margin-bottom: 2rem;
  line-height: 1.4;
}
.hero-desc {
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--ink-mid);
  max-width: 38ch;
  margin-bottom: 2.5rem;
}
.hero-cta-row { display: flex; gap: 1rem; flex-wrap: wrap; }

.btn-primary {
  display: inline-block;
  padding: 0.75rem 1.75rem;
  background: var(--ink);
  color: var(--white);
  font-size: 0.78rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  border: 1px solid var(--ink);
  transition: background 0.25s, color 0.25s;
}
.btn-primary:hover { background: var(--gold); border-color: var(--gold); }

.btn-outline {
  display: inline-block;
  padding: 0.75rem 1.75rem;
  background: transparent;
  color: var(--ink);
  font-size: 0.78rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  border: 1px solid var(--rule);
  transition: border-color 0.25s, color 0.25s;
}
.btn-outline:hover { border-color: var(--gold); color: var(--gold); }

/* ── HERO RIGHT — availability badge + metrics ── */
.hero-right {
  display: grid;
  grid-template-rows: auto 1fr;
  background: var(--paper-warm);
}

.hero-availability {
  padding: 3rem 4rem 2.5rem;
  border-bottom: 1px solid var(--rule);
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}
.avail-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.4rem 1rem 0.4rem 0.75rem;
  border: 1px solid rgba(80,160,80,0.35);
  background: rgba(80,160,80,0.07);
  width: fit-content;
  font-size: 0.78rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #3a7a3a;
}
.avail-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #4caf50;
  flex-shrink: 0;
  animation: pulse-dot 2.4s ease-in-out infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.55; transform: scale(0.75); }
}
.avail-roles {
  font-family: var(--serif);
  font-size: 1.25rem;
  font-weight: 300;
  color: var(--ink);
  line-height: 1.4;
  margin-top: 0.2rem;
}
.avail-location {
  font-size: 0.78rem;
  color: var(--ink-muted);
  letter-spacing: 0.04em;
}

.metrics-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
}
.metric-item {
  padding: 2rem 1.5rem;
  border-bottom: 1px solid var(--rule);
  border-right: 1px solid var(--rule);
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s, transform 0.5s;
}
.metric-item:nth-child(2n) { border-right: none; }
.metric-item:nth-last-child(-n+2) { border-bottom: none; }
.metric-item.visible { opacity: 1; transform: none; }
.metric-number {
  font-family: var(--serif);
  font-size: 2.6rem;
  font-weight: 300;
  color: var(--gold);
  line-height: 1;
  margin-bottom: 0.4rem;
}
.metric-label {
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  line-height: 1.4;
}
.metric-context {
  font-size: 0.78rem;
  color: var(--ink-muted);
  margin-top: 0.25rem;
}

/* ── SECTIONS COMMON ── */
section { padding: 6rem 4rem; }
.section-label {
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 0.75rem;
  display: flex; align-items: center; gap: 1rem;
}
.section-label::after {
  content: '';
  flex: 0 0 40px;
  height: 1px;
  background: var(--gold);
}
.section-heading {
  font-family: var(--serif);
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 300;
  line-height: 1.15;
  color: var(--ink);
  margin-bottom: 1.5rem;
}
.section-heading em { font-style: italic; color: var(--gold); }

/* ── ABOUT ── */
#about { background: var(--white); }
.about-inner {
  max-width: 1100px; margin: 0 auto;
  display: grid; grid-template-columns: 1fr 1.5fr; gap: 6rem; align-items: start;
}
.about-body { font-size: 1rem; line-height: 1.9; color: var(--ink-mid); }
.about-body p { margin-bottom: 1.25rem; }
.about-body p:last-child { margin-bottom: 0; }
.about-pull {
  font-family: var(--serif);
  font-size: 1.6rem;
  font-weight: 300;
  line-height: 1.5;
  color: var(--ink);
  border-left: 2px solid var(--gold);
  padding-left: 1.5rem;
  margin-bottom: 2rem;
  font-style: italic;
}

/* ── EXPERTISE ── */
#expertise { background: var(--paper); }
.expertise-inner { max-width: 1100px; margin: 0 auto; }
.expertise-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px;
  background: var(--rule); margin-top: 3rem;
  border: 1px solid var(--rule);
}
.expertise-card {
  background: var(--white);
  padding: 2.5rem 2rem;
  opacity: 0; transform: translateY(20px);
  transition: opacity 0.5s, transform 0.5s;
}
.expertise-card.visible { opacity: 1; transform: none; }
.expertise-card:hover { background: var(--paper-warm); }
.expertise-icon { font-size: 1.5rem; margin-bottom: 1rem; display: block; }
.expertise-title {
  font-family: var(--serif);
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--ink);
  margin-bottom: 0.75rem;
}
.expertise-desc { font-size: 0.85rem; line-height: 1.7; color: var(--ink-soft); }

/* ── CAREER ── */
#career { background: var(--ink); color: var(--white); }
#career .section-label { color: var(--gold-light); }
#career .section-label::after { background: var(--gold-light); }
#career .section-heading { color: var(--white); }
.career-inner { max-width: 1100px; margin: 0 auto; }
.timeline { margin-top: 3rem; position: relative; }
.timeline::before {
  content: '';
  position: absolute; left: 0; top: 0; bottom: 0;
  width: 1px; background: rgba(255,255,255,0.12);
}
.timeline-item {
  display: grid; grid-template-columns: 160px 1fr;
  gap: 2rem; padding: 0 0 3rem 2rem;
  position: relative;
  opacity: 0; transform: translateX(-16px);
  transition: opacity 0.5s, transform 0.5s;
}
.timeline-item.visible { opacity: 1; transform: none; }
.timeline-item::before {
  content: '';
  position: absolute; left: -4px; top: 6px;
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--gold);
  border: 2px solid var(--ink);
}
.timeline-year {
  font-size: 0.78rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--gold-light);
  padding-top: 0.2rem;
}
.timeline-company {
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.4);
  margin-top: 0.25rem;
}
.timeline-role {
  font-family: var(--serif);
  font-size: 1.3rem;
  font-weight: 400;
  color: var(--white);
  margin-bottom: 0.5rem;
  line-height: 1.3;
}
.timeline-org { font-size: 0.8rem; color: var(--gold-light); margin-bottom: 0.75rem; font-weight: 400; }
.timeline-body { font-size: 0.88rem; line-height: 1.7; color: rgba(255,255,255,0.6); margin-bottom: 0.75rem; }
.timeline-bullets { list-style: none; }
.timeline-bullets li {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.55);
  padding: 0.2rem 0 0.2rem 1rem;
  position: relative;
}
.timeline-bullets li::before {
  content: '—';
  position: absolute; left: 0;
  color: var(--gold);
  font-size: 0.7rem;
}

/* ── ENGAGE ── */
#engage { background: var(--paper-warm); }
.engage-inner { max-width: 1100px; margin: 0 auto; }
.tracks { display: grid; grid-template-columns: repeat(3,1fr); gap: 2rem; margin-top: 3rem; }
.track-card {
  background: var(--white);
  padding: 2.5rem 2rem;
  border-top: 3px solid var(--rule);
  opacity: 0; transform: translateY(20px);
  transition: opacity 0.5s, transform 0.5s, border-color 0.25s;
}
.track-card.visible { opacity: 1; transform: none; }
.track-card:hover { border-top-color: var(--gold); }
.track-num {
  font-family: var(--serif);
  font-size: 3rem;
  font-weight: 300;
  color: var(--rule);
  line-height: 1;
  margin-bottom: 1rem;
}
.track-title { font-family: var(--serif); font-size: 1.3rem; font-weight: 500; color: var(--ink); margin-bottom: 0.75rem; }
.track-body { font-size: 0.85rem; line-height: 1.75; color: var(--ink-soft); margin-bottom: 1.5rem; }
.track-link {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gold);
  text-decoration: none;
  font-weight: 400;
}
.track-link:hover { color: var(--ink); }

/* ── CREDENTIALS ── */
#credentials { background: var(--white); }
.credentials-inner { max-width: 1100px; margin: 0 auto; display: grid; grid-template-columns: 1fr 1fr; gap: 6rem; }
.cred-list { list-style: none; margin-top: 2rem; }
.cred-list li {
  display: flex; gap: 1rem; align-items: flex-start;
  padding: 1rem 0;
  border-bottom: 1px solid var(--rule);
  font-size: 0.88rem;
  color: var(--ink-mid);
  line-height: 1.5;
}
.cred-list li:first-child { border-top: 1px solid var(--rule); }
.cred-dot { flex-shrink: 0; width: 6px; height: 6px; border-radius: 50%; background: var(--gold); margin-top: 0.45rem; }
.employer-row { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 2rem; }
.employer-tag {
  padding: 0.5rem 1.25rem;
  border: 1px solid var(--rule);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
  font-weight: 400;
}

/* ── BEYOND ── */
#beyond { background: var(--paper-warm); }
.beyond-inner { max-width: 1100px; margin: 0 auto; }
.beyond-layout { display: grid; grid-template-columns: 1fr 1.2fr; gap: 5rem; margin-top: 3rem; align-items: start; }
.beyond-text .beyond-pull {
  font-family: var(--serif);
  font-size: 1.35rem;
  font-weight: 300;
  font-style: italic;
  line-height: 1.6;
  color: var(--ink);
  border-left: 2px solid var(--gold);
  padding-left: 1.5rem;
  margin-bottom: 2rem;
}
.beyond-text p { font-size: 0.92rem; line-height: 1.85; color: var(--ink-mid); margin-bottom: 1.1rem; }
.beyond-text p:last-child { margin-bottom: 0; }
.beyond-interests { display: flex; gap: 0.6rem; flex-wrap: wrap; margin-top: 1.5rem; }
.interest-tag {
  padding: 0.4rem 1rem;
  border: 1px solid var(--rule);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  background: var(--white);
}
.photo-strip {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: auto auto;
  gap: 0.75rem;
}
.photo-frame {
  background: var(--paper);
  border: 1px solid var(--rule);
  aspect-ratio: 4/3;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 0.5rem;
  color: var(--ink-muted);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  position: relative;
  overflow: hidden;
}
.photo-frame.wide { grid-column: 1 / -1; aspect-ratio: 16/7; }
.photo-frame img { width: 100%; height: 100%; object-fit: cover; display: block; }
.photo-frame svg { opacity: 0.25; }
.photo-note { font-size: 0.75rem; color: var(--ink-muted); font-style: italic; margin-top: 0.75rem; text-align: center; }

/* ── CONTACT ── */
#contact {
  background: var(--ink);
  color: var(--white);
  text-align: center;
  padding: 7rem 4rem;
}
#contact .section-label { justify-content: center; }
#contact .section-label::after { display: none; }
#contact .section-heading { color: var(--white); }
.contact-sub {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.5);
  max-width: 50ch;
  margin: 0 auto 3rem;
  line-height: 1.7;
}
.contact-links { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }
.contact-item {
  display: flex; align-items: center; gap: 0.6rem;
  padding: 0.85rem 1.75rem;
  border: 1px solid rgba(255,255,255,0.15);
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  transition: border-color 0.25s, color 0.25s;
}
.contact-item:hover { border-color: var(--gold); color: var(--gold-light); }

/* ── FOOTER ── */
footer {
  background: #080909;
  padding: 1.5rem 4rem;
  display: flex; justify-content: space-between; align-items: center;
  font-size: 0.72rem;
  color: rgba(255,255,255,0.25);
  letter-spacing: 0.05em;
}
footer a { color: inherit; text-decoration: none; }

/* ── ANIMATIONS ── */
.fade-up {
  opacity: 0; transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-up.visible { opacity: 1; transform: none; }

/* ── PRINT ── */
@media print {
  nav, .hero-cta-row { display: none; }
  #hero { min-height: auto; grid-template-columns: 1fr; padding-top: 0; }
  .hero-left::after { display: none; }
  .metric-item, .expertise-card, .timeline-item, .track-card, .fade-up { opacity: 1; transform: none; }
  section { padding: 2rem 0; break-inside: avoid; }
  #career { background: var(--paper); color: var(--ink); }
  #career .timeline-role, #career .timeline-year, #career .timeline-org { color: var(--ink); }
  #career .timeline-bullets li { color: var(--ink-soft); }
  #contact { background: var(--paper); color: var(--ink); padding: 2rem 0; }
  footer { background: none; color: var(--ink-muted); padding: 1rem 0; }
}

/* ── RESPONSIVE ── */
@media (max-width: 900px) {
  nav { padding: 1.25rem 1.5rem; }
  .nav-links { display: none; }
  #hero { grid-template-columns: 1fr; min-height: auto; }
  .hero-left { padding: 7rem 1.5rem 3rem; }
  .hero-left::after { display: none; }
  .hero-right { grid-template-rows: auto auto; }
  .hero-availability { padding: 2rem 1.5rem 1.75rem; }
  .metrics-grid { padding: 0; }
  .metric-item { padding: 1.5rem; }
  section { padding: 4rem 1.5rem; }
  .about-inner, .credentials-inner { grid-template-columns: 1fr; gap: 2.5rem; }
  .expertise-grid { grid-template-columns: 1fr 1fr; }
  .tracks { grid-template-columns: 1fr; }
  .timeline-item { grid-template-columns: 1fr; gap: 0.5rem; padding-left: 1.5rem; }
  .beyond-layout { grid-template-columns: 1fr; gap: 2.5rem; }
  footer { flex-direction: column; gap: 0.5rem; text-align: center; padding: 1.5rem; }
}
@media (max-width: 600px) {
  .expertise-grid { grid-template-columns: 1fr; }
}

/* ============================================================
   ADDITIONS — hamburger nav, award chips, recognitions,
   vCard/QR, 4-col tracks, board bio page
   ============================================================ */

/* ── HAMBURGER NAV ── */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 200;
}
.nav-hamburger span {
  display: block;
  width: 24px;
  height: 1.5px;
  background: var(--ink);
  transition: transform 0.25s, opacity 0.25s;
  transform-origin: center;
}
.nav-hamburger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ── TIMELINE AWARD CHIPS ── */
.timeline-awards {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.85rem;
}
.award-chip {
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  padding: 0.2rem 0.65rem;
  border: 1px solid rgba(184,147,74,0.4);
  color: var(--gold-light);
  background: rgba(184,147,74,0.08);
}

/* ── ENGAGE — 4-column grid ── */
.tracks {
  grid-template-columns: repeat(4, 1fr);
}
.track-body-link {
  color: var(--gold);
  text-decoration: none;
  font-size: 0.78rem;
  display: inline-block;
  margin-top: 0.35rem;
}
.track-body-link:hover { color: var(--ink); }

/* ── RECOGNITIONS SECTION ── */
#recognitions { background: var(--ink); color: var(--white); }
#recognitions .section-label { color: var(--gold-light); }
#recognitions .section-label::after { background: var(--gold-light); }
#recognitions .section-heading { color: var(--white); }
.recognitions-inner { max-width: 1100px; margin: 0 auto; }
.awards-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.08);
  margin-top: 3rem;
}
.award-card {
  background: var(--ink);
  padding: 2rem 1.75rem;
  border-bottom: 2px solid transparent;
  transition: border-color 0.25s, background 0.25s;
}
.award-card:hover {
  background: var(--ink-mid);
  border-bottom-color: var(--gold);
}
.award-org {
  font-size: 0.68rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 0.6rem;
}
.award-name {
  font-family: var(--serif);
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--white);
  line-height: 1.3;
  margin-bottom: 0.75rem;
}
.award-desc {
  font-size: 0.8rem;
  line-height: 1.7;
  color: rgba(255,255,255,0.5);
}

/* ── VCARD / QR SECTION ── */
.vcard-block {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  margin-top: 3rem;
  padding: 2rem 2.5rem;
  border: 1px solid rgba(255,255,255,0.12);
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}
.vcard-qr {
  flex-shrink: 0;
  background: var(--white);
  padding: 10px;
  line-height: 0;
}
.vcard-qr img { width: 120px; height: 120px; display: block; }
.vcard-label {
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold-light);
  margin-bottom: 0.5rem;
}
.vcard-desc {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.5);
  line-height: 1.65;
  margin-bottom: 0.85rem;
}
.vcard-download {
  display: inline-block;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--gold-light);
  text-decoration: none;
  border-bottom: 1px solid rgba(212,174,112,0.3);
  padding-bottom: 1px;
  transition: color 0.2s, border-color 0.2s;
}
.vcard-download:hover { color: var(--white); border-color: var(--white); }

/* ── RESPONSIVE ADDITIONS ── */
@media (max-width: 1050px) {
  .awards-grid { grid-template-columns: repeat(2, 1fr); }
  .tracks { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 900px) {
  .nav-hamburger { display: flex; }
  .nav-links {
    display: none;
    flex-direction: column;
    position: fixed;
    top: 0; left: 0; right: 0;
    background: rgba(247,245,240,0.98);
    backdrop-filter: blur(16px);
    padding: 5rem 2rem 2rem;
    gap: 0;
    border-bottom: 1px solid var(--rule);
    z-index: 150;
  }
  .nav-links.open { display: flex; }
  .nav-links li { border-bottom: 1px solid var(--rule); }
  .nav-links a {
    display: block;
    padding: 0.85rem 0;
    font-size: 0.85rem;
  }
  .awards-grid { grid-template-columns: 1fr; }
  .tracks { grid-template-columns: 1fr; }
  .vcard-block { flex-direction: column; text-align: center; max-width: 280px; }
}
