/* ============================================================
   KUNJ VYAS — PORTFOLIO
   Design direction: Still Confidence
   Palette: Obsidian / Parchment / Chalk + Indigo accent
   Type: DM Sans (display/body) + DM Mono (labels)
   ============================================================ */

/* ── RESET & BASE ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  /* Colors */
  --c-obsidian:    #0D0D0D;
  --c-parchment:   #F4F2EC;
  --c-chalk:       #FAFAF8;
  --c-border:      rgba(0,0,0,0.09);
  --c-border-md:   rgba(0,0,0,0.15);
  --c-text-1:      #0D0D0D;
  --c-text-2:      #5a5a58;
  --c-text-3:      #9a9895;

  /* Accents */
  --c-indigo:      #534AB7;
  --c-indigo-tint: #EEEDFE;
  --c-indigo-bdr:  #CECBF6;
  --c-indigo-dark: #3C3489;
  --c-teal:        #1D9E75;
  --c-teal-tint:   #E1F5EE;
  --c-teal-bdr:    #9FE1CB;
  --c-teal-dark:   #085041;
  --c-stone-tint:  #F1EFE8;
  --c-stone-bdr:   #D3D1C7;
  --c-stone-dark:  #444441;

  /* Type */
  --font-sans: 'DM Sans', system-ui, sans-serif;
  --font-mono: 'DM Mono', 'Courier New', monospace;

  /* Spacing */
  --sp-1:  4px;
  --sp-2:  8px;
  --sp-3:  12px;
  --sp-4:  16px;
  --sp-5:  24px;
  --sp-6:  32px;
  --sp-7:  40px;
  --sp-8:  48px;
  --sp-9:  64px;
  --sp-10: 80px;
  --sp-11: 120px;

  /* Radii */
  --r-sm:   6px;
  --r-md:   10px;
  --r-lg:   14px;
  --r-xl:   20px;
  --r-pill: 100px;

  /* Transitions */
  --t-fast:   200ms ease;
  --t-base:   250ms ease;
  --t-slow:   350ms ease;
  --t-reveal: 500ms cubic-bezier(0.16, 1, 0.3, 1);
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background: var(--c-parchment);
  color: var(--c-text-1);
  overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
img { display: block; max-width: 100%; }

/* ── LAYOUT ───────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 var(--sp-7);
}

/* ── UTILITY ──────────────────────────────────────────────── */
.section-label {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--c-text-3);
  display: inline-block;
  margin-bottom: var(--sp-5);
}
.section-label--light { color: #5F5E5A; }

/* ── SCROLL REVEAL ────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity var(--t-reveal), transform var(--t-reveal);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── NAV ──────────────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--sp-7);
  background: transparent;
  border-bottom: 0.5px solid transparent;
  transition: background var(--t-base), border-color var(--t-base), transform 350ms ease;
}
.nav.scrolled {
  background: rgba(244, 242, 236, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom-color: var(--c-border);
}
.nav.hidden { transform: translateY(-100%); }

.nav-logo {
  font-size: 15px;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--c-chalk);
  transition: color var(--t-fast);
}
.nav.scrolled .nav-logo { color: var(--c-text-1); }

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--sp-7);
}
.nav-link {
  font-size: 13px;
  color: rgba(255,255,255,0.65);
  transition: color var(--t-fast);
  position: relative;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0; right: 0;
  height: 0.5px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--t-base);
}
.nav-link:hover::after { transform: scaleX(1); }
.nav-link:hover { color: rgba(255,255,255,0.9); }

.nav.scrolled .nav-link { color: var(--c-text-2); }
.nav.scrolled .nav-link:hover { color: var(--c-text-1); }

.nav-cta {
  font-size: 13px;
  font-weight: 500;
  color: var(--c-chalk);
  background: rgba(255,255,255,0.12);
  border: 0.5px solid rgba(255,255,255,0.22);
  padding: 7px 16px;
  border-radius: var(--r-pill);
  transition: background var(--t-fast), border-color var(--t-fast), color var(--t-fast);
}
.nav-cta:hover { background: rgba(255,255,255,0.2); }
.nav.scrolled .nav-cta {
  background: var(--c-obsidian);
  border-color: var(--c-obsidian);
  color: var(--c-chalk);
}
.nav.scrolled .nav-cta:hover { background: #222; }

/* Hamburger */
.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.nav-hamburger span {
  display: block;
  height: 1px;
  background: var(--c-chalk);
  border-radius: 2px;
  transition: transform var(--t-base), opacity var(--t-fast), background var(--t-fast);
}
.nav.scrolled .nav-hamburger span { background: var(--c-text-1); }
.nav-hamburger.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { transform: translateY(-6px) rotate(-45deg); }

/* Mobile menu */
.mobile-menu {
  position: fixed;
  top: 56px; left: 0; right: 0;
  z-index: 99;
  background: var(--c-chalk);
  border-bottom: 0.5px solid var(--c-border);
  display: flex;
  flex-direction: column;
  padding: var(--sp-5) var(--sp-7);
  gap: var(--sp-4);
  transform: translateY(-110%);
  opacity: 0;
  transition: transform 300ms cubic-bezier(0.16,1,0.3,1), opacity 200ms ease;
  pointer-events: none;
}
.mobile-menu.open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: all;
}
.mobile-link {
  font-size: 16px;
  color: var(--c-text-2);
  padding: var(--sp-2) 0;
  border-bottom: 0.5px solid var(--c-border);
  transition: color var(--t-fast);
}
.mobile-link:hover { color: var(--c-text-1); }
.mobile-cta {
  font-size: 15px;
  font-weight: 500;
  color: var(--c-chalk);
  background: var(--c-obsidian);
  padding: 12px 20px;
  border-radius: var(--r-pill);
  text-align: center;
  margin-top: var(--sp-2);
  transition: background var(--t-fast);
}
.mobile-cta:hover { background: #222; }

/* ── HERO ─────────────────────────────────────────────────── */
.hero {
  background: var(--c-obsidian);
  min-height: 100svh;
  display: flex;
  align-items: stretch;
  padding: 0 var(--sp-7);
  padding-bottom: 0;
  position: relative;
  overflow: hidden;
}

/* subtle texture overlay */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 15% 50%, rgba(83,74,183,0.12) 0%, transparent 50%),
    radial-gradient(circle at 85% 20%, rgba(29,158,117,0.07) 0%, transparent 40%);
  pointer-events: none;
}

.hero-inner {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding-top: 86px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.hero-main {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr);
  gap: var(--sp-8);
  align-items: center;
}

.hero-copy {
  min-width: 0;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  margin-bottom: var(--sp-5);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: #5F5E5A;
  opacity: 0;
  animation: fade-up 600ms 100ms cubic-bezier(0.16,1,0.3,1) forwards;
}
.hero-tag-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--c-teal);
  flex-shrink: 0;
}

.hero-h1 {
  display: flex;
  flex-direction: column;
  font-size: clamp(36px, 5.5vw, 56px);
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1.06;
  color: #F5F5F2;
  margin-bottom: var(--sp-5);
  max-width: 680px;
}
.hero-line {
  display: block;
  opacity: 0;
  animation: fade-up 700ms cubic-bezier(0.16,1,0.3,1) forwards;
}
.hero-line:nth-child(1) { animation-delay: 180ms; }
.hero-line:nth-child(2) { animation-delay: 260ms; }
.hero-accent { color: #7F77DD; }

.hero-sub {
  font-size: clamp(14px, 1.5vw, 16px);
  color: #6B6966;
  line-height: 1.7;
  max-width: 460px;
  margin-bottom: var(--sp-6);
  opacity: 0;
  animation: fade-up 600ms 340ms cubic-bezier(0.16,1,0.3,1) forwards;
}

.hero-actions {
  display: flex;
  gap: var(--sp-3);
  align-items: center;
  margin-bottom: var(--sp-5);
  opacity: 0;
  animation: fade-up 600ms 420ms cubic-bezier(0.16,1,0.3,1) forwards;
}

/* ── BUTTONS ──────────────────────────────────────────────── */
.hero-photo-wrap {
  align-self: start;
  justify-self: end;
  width: min(100%, 300px);
  aspect-ratio: 818 / 1230;
  margin-top: 10px;
  border-radius: 0;
  overflow: hidden;
  border: none;
  box-shadow: none;
  opacity: 0;
  animation: fade-up 600ms 460ms cubic-bezier(0.16,1,0.3,1) forwards;
}

.hero-photo {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center top;
}

.btn-primary {
  display: inline-block;
  font-size: 14px;
  font-weight: 500;
  color: #fff;
  background: var(--c-indigo);
  padding: 11px 22px;
  border-radius: var(--r-pill);
  border: none;
  cursor: pointer;
  transition: background var(--t-fast), transform var(--t-fast);
  white-space: nowrap;
}
.btn-primary:hover { background: #4540A6; transform: translateY(-1px); }
.btn-primary:active { transform: translateY(0); }

.btn-large {
  font-size: 16px;
  padding: 14px 28px;
}

.btn-ghost {
  display: inline-block;
  font-size: 13px;
  color: #5F5E5A;
  cursor: pointer;
  padding: 11px 0;
  transition: color var(--t-fast);
}
.btn-ghost:hover { color: #F5F5F2; }

.btn-light {
  display: inline-block;
  font-size: 14px;
  font-weight: 500;
  color: var(--c-chalk);
  background: rgba(255,255,255,0.1);
  border: 0.5px solid rgba(255,255,255,0.16);
  padding: 11px 22px;
  border-radius: var(--r-pill);
  transition: background var(--t-fast);
  margin-top: var(--sp-5);
}
.btn-light:hover { background: rgba(255,255,255,0.18); }

/* ── PROOF BAR ────────────────────────────────────────────── */
.hero-proof {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 0.5px solid rgba(255,255,255,0.07);
  opacity: 0;
  animation: fade-up 600ms 520ms cubic-bezier(0.16,1,0.3,1) forwards;
}
.proof-cell {
  padding: 14px 0 14px;
  border-right: 0.5px solid rgba(255,255,255,0.07);
  padding-right: var(--sp-5);
}
.proof-cell:not(:first-child) { padding-left: var(--sp-5); }
.proof-cell:last-child { border-right: none; }

.proof-num {
  font-size: clamp(22px, 2.5vw, 30px);
  font-weight: 500;
  color: #F5F5F2;
  letter-spacing: -0.02em;
  line-height: 1;
  margin-bottom: 6px;
  font-variant-numeric: tabular-nums;
}
.proof-lbl {
  font-size: 11px;
  color: #5F5E5A;
  line-height: 1.4;
}

/* ── WORK SECTION ─────────────────────────────────────────── */
.work {
  padding: var(--sp-11) 0 var(--sp-10);
}
.work-header {
  margin-bottom: var(--sp-7);
}

/* ── CARDS GRID ───────────────────────────────────────────── */
.cards-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

/* ── CARD BASE ────────────────────────────────────────────── */
.card {
  background: var(--c-chalk);
  border: 0.5px solid var(--c-border);
  border-radius: var(--r-lg);
  overflow: hidden;
  cursor: pointer;
  transition: transform var(--t-base), border-color var(--t-base), box-shadow var(--t-base);
}
.card:hover {
  transform: translateY(-3px);
  border-color: var(--c-border-md);
  box-shadow: 0 8px 24px rgba(0,0,0,0.06);
}

/* Wide card */
.card--wide {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 1fr 1fr;
}
.card--wide .card-thumb { border-radius: 0; }

/* Card thumb */
.card-thumb {
  height: 180px;
  display: flex;
  align-items: flex-end;
  padding: var(--sp-4);
  position: relative;
  overflow: hidden;
}
.card--wide .card-thumb { height: auto; min-height: 200px; }

.card-thumb--purple { background: var(--c-indigo-tint); }
.card-thumb--teal   { background: var(--c-teal-tint); }
.card-thumb--stone  { background: var(--c-stone-tint); }

.card-thumb-glyph {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -58%);
  font-size: 52px;
  font-weight: 500;
  letter-spacing: -0.04em;
  opacity: 0.11;
  line-height: 1;
  white-space: nowrap;
  user-select: none;
}
.card-thumb--purple .card-thumb-glyph { color: var(--c-indigo-dark); }
.card-thumb--teal   .card-thumb-glyph { color: var(--c-teal-dark); }
.card-thumb--stone  .card-thumb-glyph { color: var(--c-stone-dark); }

.card-thumb-media {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
  pointer-events: none;
}

.card--wide .card-thumb-media {
  object-fit: contain;
}

.card-badge {
  position: relative;
  z-index: 1;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: var(--r-pill);
}
.badge--purple { background: #CECBF6; color: var(--c-indigo-dark); }
.badge--teal   { background: var(--c-teal-bdr); color: var(--c-teal-dark); }
.badge--stone  { background: var(--c-stone-bdr); color: var(--c-stone-dark); }

/* Card body */
.card-body { padding: var(--sp-5) var(--sp-6) var(--sp-6); }
.card--wide .card-body {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: var(--sp-8) var(--sp-7);
}

.card-meta {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--c-text-3);
  margin-bottom: var(--sp-2);
}
.card-title {
  font-size: clamp(15px, 1.6vw, 18px);
  font-weight: 500;
  letter-spacing: -0.01em;
  line-height: 1.25;
  color: var(--c-text-1);
  margin-bottom: var(--sp-2);
}
.card-desc {
  font-size: 13px;
  color: var(--c-text-2);
  line-height: 1.6;
  margin-bottom: var(--sp-5);
}
.card--wide .card-desc { margin-bottom: 0; }

.card-stats {
  display: flex;
  gap: var(--sp-5);
  padding-top: var(--sp-4);
  border-top: 0.5px solid var(--c-border);
}
.card--wide .card-stats { margin-top: auto; padding-top: var(--sp-5); }

.stat-num {
  font-size: 15px;
  font-weight: 500;
  color: var(--c-indigo);
  letter-spacing: -0.01em;
}
.stat-lbl {
  font-size: 11px;
  color: var(--c-text-3);
  margin-top: 2px;
}

/* ── ABOUT ────────────────────────────────────────────────── */
.about {
  background: var(--c-obsidian);
  padding: var(--sp-11) var(--sp-7);
}
.about-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-11);
  align-items: start;
}

.about-h2 {
  font-size: clamp(22px, 2.8vw, 32px);
  font-weight: 500;
  color: #F5F5F2;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: var(--sp-5);
}
.about-body {
  font-size: 14px;
  color: #6B6966;
  line-height: 1.75;
  margin-bottom: var(--sp-5);
}

.skills-grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin-top: var(--sp-5);
}
.skill-pill {
  font-size: 12px;
  color: #888780;
  border: 0.5px solid #2C2C2A;
  padding: 5px 12px;
  border-radius: var(--r-pill);
  transition: border-color var(--t-fast), color var(--t-fast);
}
.skill-pill:hover { border-color: #534AB7; color: #7F77DD; }

/* Experience */
.exp-list { display: flex; flex-direction: column; gap: 0; }
.exp-item {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: var(--sp-5) 0;
  border-bottom: 0.5px solid #1E1E1C;
  gap: var(--sp-4);
}
.exp-item:last-of-type { border-bottom-color: transparent; }
.exp-role {
  font-size: 14px;
  font-weight: 500;
  color: #D3D1C7;
  margin-bottom: 3px;
}
.exp-org {
  font-size: 12px;
  color: #5F5E5A;
}
.exp-year {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--c-indigo);
  white-space: nowrap;
  padding-top: 2px;
}

/* ── CONTACT ──────────────────────────────────────────────── */
.contact {
  padding: var(--sp-11) 0;
}
.contact-inner {
  text-align: center;
  max-width: 560px;
  margin: 0 auto;
}
.contact-h2 {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1.1;
  color: var(--c-text-1);
  margin-bottom: var(--sp-4);
}
.contact-sub {
  font-size: 15px;
  color: var(--c-text-2);
  line-height: 1.65;
  margin-bottom: var(--sp-7);
}
.contact-links {
  display: flex;
  justify-content: center;
  gap: var(--sp-7);
  margin-top: var(--sp-5);
}
.contact-link {
  font-size: 13px;
  color: var(--c-text-3);
  transition: color var(--t-fast);
}
.contact-link:hover { color: var(--c-text-1); }

/* ── FOOTER ───────────────────────────────────────────────── */
.footer {
  border-top: 0.5px solid var(--c-border);
  padding: var(--sp-5) 0;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.footer-copy, .footer-note {
  font-size: 12px;
  color: var(--c-text-3);
}

/* ── ANIMATIONS ───────────────────────────────────────────── */
@keyframes fade-up {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── RESPONSIVE ───────────────────────────────────────────── */
.br-hide { display: none; }

@media (min-width: 900px) {
  .br-hide { display: block; }
}

@media (max-width: 900px) {
  :root {
    --sp-7:  24px;
    --sp-10: 64px;
    --sp-11: 80px;
  }

  /* Nav */
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }

  .hero-main {
    grid-template-columns: 1fr;
    gap: var(--sp-7);
    align-items: start;
  }

  .hero-photo-wrap {
    justify-self: center;
    width: min(100%, 320px);
    order: -1;
  }

  /* Hero proof bar */
  .hero-proof {
    grid-template-columns: 1fr 1fr;
  }
  .proof-cell:nth-child(2) { border-right: none; }
  .proof-cell:nth-child(odd) { padding-left: 0; }
  .proof-cell:nth-child(3) { border-right: 0.5px solid rgba(255,255,255,0.07); }
  .proof-cell:nth-child(3),
  .proof-cell:nth-child(4) {
    border-top: 0.5px solid rgba(255,255,255,0.07);
  }

  /* Cards */
  .cards-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .card--wide {
    grid-column: auto;
    display: block;
  }
  .card--wide .card-thumb { min-height: 160px; }
  .card--wide .card-body { padding: var(--sp-5) var(--sp-5) var(--sp-6); }

  /* About */
  .about-inner {
    grid-template-columns: 1fr;
    gap: var(--sp-9);
  }
  .about { padding: var(--sp-10) var(--sp-7); }
}

@media (max-width: 600px) {
  :root {
    --sp-7:  20px;
    --sp-10: 56px;
    --sp-11: 64px;
  }

  .hero { padding-top: 0; }
  .hero-inner { padding-top: 80px; }
  .hero-photo-wrap { width: min(100%, 280px); }

  .hero-proof {
    grid-template-columns: 1fr 1fr;
  }

  .card-thumb { height: 140px; }

  .contact-h2 { font-size: 26px; }
  .contact-links { gap: var(--sp-5); }

  .footer-inner { flex-direction: column; gap: var(--sp-2); text-align: center; }

  .hero-actions { flex-wrap: wrap; }
  .btn-primary { width: 100%; text-align: center; }
  .btn-ghost { align-self: flex-start; }
}

/* ── REDUCED MOTION ───────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  .reveal,
  .hero-tag, .hero-line, .hero-sub, .hero-actions, .hero-photo-wrap, .hero-proof {
    opacity: 1 !important;
    transform: none !important;
    animation: none !important;
    transition: none !important;
  }
  html { scroll-behavior: auto; }
}