/* ============================================================
   DR. SAURAV CHATURVEDI — CINEMATIC INTELLIGENCE
   Shared design system
   ============================================================ */

:root{
  --black:        #0B0B0B;
  --black-2:      #111111;
  --black-soft:   #161513;
  --cream:        #F3EEE4;
  --cream-2:      #E9E1D3;
  --cream-3:      #DCD2C2;
  --gold:         #C4A66F;
  --gold-soft:    #B99A62;
  --gold-deep:    #A88A55;
  --line-on-dark: rgba(196,166,111,0.28);
  --line-on-light:rgba(17,17,17,0.14);

  --serif: 'Cormorant Garamond', 'Times New Roman', serif;
  --sans:  'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --ease: cubic-bezier(.22,.68,.18,1);
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  background:var(--black);
  color:var(--cream);
  font-family:var(--sans);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }

/* ---------- Typography ---------- */
.f-serif{ font-family:var(--serif); }
.f-sans{ font-family:var(--sans); }

h1,h2,h3,.display{
  font-family:var(--serif);
  font-weight:600;
  line-height:0.98;
  letter-spacing:-0.01em;
  margin:0;
}

.eyebrow{
  font-family:var(--sans);
  font-size:11px;
  letter-spacing:0.22em;
  text-transform:uppercase;
  font-weight:600;
  color:var(--gold);
  display:inline-flex;
  align-items:center;
  gap:10px;
}
.eyebrow::before{
  content:"";
  width:24px; height:1px;
  background:var(--gold);
  display:inline-block;
}
.on-light .eyebrow,
.bg-cream-section .eyebrow{ color:var(--gold-deep); }

.headline-xl{
  font-size:clamp(2.6rem, 6.4vw, 6.4rem);
}
.headline-lg{
  font-size:clamp(2.2rem, 4.6vw, 4.2rem);
}
.headline-md{
  font-size:clamp(1.7rem, 3vw, 2.6rem);
}

.body-copy{
  font-family:var(--sans);
  font-weight:400;
  font-size:16px;
  line-height:1.7;
  color:var(--cream-3);
}
.on-light .body-copy,
.bg-cream-section .body-copy{ color:#4a4335; }

.label-sm{
  font-size:10px;
  letter-spacing:0.2em;
  text-transform:uppercase;
  font-weight:600;
  color:var(--gold);
}
.bg-cream-section .label-sm{ color:var(--gold-deep); }

/* ---------- Sections ---------- */
.section{
  padding:120px 6vw;
  position:relative;
}
@media (max-width:768px){
  .section{ padding:80px 6vw; }
}
.bg-black-section{ background:var(--black); color:var(--cream); }
.bg-cream-section{ background:var(--cream); color:#15130f; }
.bg-black-section .eyebrow{ color:var(--gold); }

.max-wrap{ max-width:1360px; margin:0 auto; }

/* ---------- Gold rule ---------- */
.gold-line{
  height:1px;
  width:56px;
  background:var(--gold);
  transform-origin:left;
  transform:scaleX(0);
  transition:transform 900ms var(--ease);
}
.gold-line.in-view{ transform:scaleX(1); }

.divider{
  border:none;
  border-top:1px solid var(--line-on-dark);
}
.on-light .divider,
.bg-cream-section .divider,
.bg-cream-section hr{ border-top:1px solid var(--line-on-light); }

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:15px 26px;
  font-family:var(--sans);
  font-size:11px;
  letter-spacing:0.16em;
  text-transform:uppercase;
  font-weight:600;
  border:1px solid var(--gold-soft);
  color:var(--cream);
  background:transparent;
  border-radius:2px;
  transition:background 300ms var(--ease), color 300ms var(--ease), border-color 300ms var(--ease);
  cursor:pointer;
}
.btn svg{ transition:transform 300ms var(--ease); width:14px; height:14px; }
.btn:hover{
  background:var(--gold);
  color:#15130f;
  border-color:var(--gold);
}
.btn:hover svg{ transform:translateX(5px); }
.btn:focus-visible{ outline:2px solid var(--gold); outline-offset:3px; }

.btn-solid{
  background:var(--gold);
  color:#15130f;
  border-color:var(--gold);
}
.btn-solid:hover{ background:transparent; color:var(--cream); }
.on-light .btn,
.bg-cream-section .btn{ color:#15130f; border-color:var(--gold-deep); }
.on-light .btn:hover,
.bg-cream-section .btn:hover{ background:var(--gold-deep); color:#fff; border-color:var(--gold-deep); }
.bg-cream-section .btn-solid{ background:var(--gold-deep); color:#fff; }
.bg-cream-section .btn-solid:hover{ background:transparent; color:#15130f; }

/* ---------- Nav ---------- */
.site-nav{
  position:fixed;
  top:0; left:0; right:0;
  z-index:100;
  padding:26px 6vw;
  display:flex;
  align-items:center;
  justify-content:space-between;
  transition:background 400ms var(--ease), border-color 400ms var(--ease), padding 400ms var(--ease), backdrop-filter 400ms var(--ease);
  border-bottom:1px solid transparent;
}
.site-nav.scrolled{
  background:rgba(11,11,11,0.82);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line-on-dark);
  padding:16px 6vw;
}
.nav-mark{
  display:flex; align-items:center; gap:12px;
  font-family:var(--serif);
  font-size:15px;
  letter-spacing:0.05em;
  color:var(--cream);
}
.nav-mark .monogram{
  width:34px; height:34px;
  border:1px solid var(--gold-soft);
  border-radius:50%;
  display:flex; align-items:center; justify-content:center;
  font-size:14px;
  color:var(--gold);
}
.nav-links{
  display:flex; gap:38px;
  list-style:none; margin:0; padding:0;
}
.nav-links a{
  font-size:11px;
  letter-spacing:0.16em;
  text-transform:uppercase;
  font-weight:600;
  color:var(--cream-3);
  position:relative;
  padding-bottom:4px;
}
.nav-links a::after{
  content:""; position:absolute; left:0; bottom:0;
  width:0; height:1px; background:var(--gold);
  transition:width 300ms var(--ease);
}
.nav-links a:hover::after,
.nav-links a.active::after{ width:100%; }
.nav-links a:hover, .nav-links a.active{ color:var(--cream); }

.nav-cta{ display:flex; align-items:center; gap:22px; }
.nav-burger{
  display:none;
  background:none; border:none; color:var(--cream);
  width:26px; height:20px; position:relative; cursor:pointer;
}
.nav-burger span{
  position:absolute; left:0; right:0; height:1px; background:var(--gold);
  transition:transform 300ms var(--ease), opacity 300ms var(--ease);
}
.nav-burger span:nth-child(1){ top:0; }
.nav-burger span:nth-child(2){ top:9px; }
.nav-burger span:nth-child(3){ top:18px; }

.mobile-menu{
  position:fixed; inset:0; z-index:99;
  background:var(--black);
  display:flex; flex-direction:column;
  align-items:flex-start; justify-content:center;
  gap:26px; padding:6vw;
  transform:translateY(-100%);
  transition:transform 420ms var(--ease);
}
.mobile-menu.open{ transform:translateY(0); }
.mobile-menu a{ font-family:var(--serif); font-size:2.2rem; color:var(--cream); }

@media (max-width:900px){
  .nav-links{ display:none; }
  .nav-cta .btn-desktop-only{ display:none; }
  .nav-burger{ display:block; }
}

/* ---------- Hero ---------- */
.hero{
  min-height:100vh;
  display:grid;
  grid-template-columns:1.05fr 0.95fr;
  align-items:center;
  padding:150px 6vw 90px;
  background:var(--black);
  position:relative;
  overflow:hidden;
}
@media (max-width:980px){
  .hero{ grid-template-columns:1fr; padding-top:120px; gap:48px; }
}
.hero-copy{ position:relative; z-index:2; }
.hero-copy .eyebrow{ margin-bottom:26px; }
.hero-copy h1{ margin:22px 0 26px; }
.hero-copy .body-copy{ max-width:420px; font-size:17px; }
.hero-ctas{ display:flex; gap:16px; margin-top:38px; flex-wrap:wrap; align-items:center; }
.cta-ornament{
  display:flex; align-items:center; gap:10px;
  margin-top:30px;
}
.cta-ornament svg{ width:26px; height:26px; color:var(--gold); opacity:0.85; }
.cta-ornament span{
  font-size:10px; letter-spacing:0.18em; text-transform:uppercase; color:var(--cream-3);
}
.hero-identity{
  margin-top:64px;
  padding-top:26px;
  border-top:1px solid var(--line-on-dark);
  max-width:420px;
}
.hero-identity .name{ font-family:var(--serif); font-size:1.05rem; letter-spacing:0.02em; }
.hero-identity .role{ font-size:12px; color:var(--cream-3); margin-top:4px; }
.hero-identity .founder{ font-size:11px; color:var(--gold); letter-spacing:0.1em; text-transform:uppercase; margin-top:10px; }

.hero-visual{
  position:relative;
  aspect-ratio:4/5;
  border:1px solid var(--line-on-dark);
  overflow:hidden;
  background:
    radial-gradient(circle at 30% 20%, rgba(196,166,111,0.10), transparent 55%),
    linear-gradient(160deg, #17140f 0%, #0b0b0b 55%, #05070c 100%);
}
.portrait-frame{
  position:absolute; inset:0;
  display:flex; align-items:center; justify-content:center;
  clip-path:inset(0 0 0 0);
}
.portrait-frame svg{ width:100%; height:100%; }
.orbit-overlay{
  position:absolute; inset:0; pointer-events:none;
  opacity:0.55;
}
.scroll-note{
  position:absolute; left:50%; bottom:22px;
  transform:translateX(-50%);
  display:flex; align-items:center; gap:10px;
  font-size:10px; letter-spacing:0.2em; text-transform:uppercase;
  color:var(--cream-3);
  writing-mode:horizontal-tb;
  z-index:1;
  pointer-events:none;
}
@media (max-width:980px){ .scroll-note{ display:none; } }
.scroll-note .dot{
  width:6px; height:6px; border-radius:50%; background:var(--gold);
  animation:pulse 2.4s ease-in-out infinite;
}
@keyframes pulse{
  0%,100%{ opacity:0.35; } 50%{ opacity:1; }
}

/* portrait placeholder note (visible small tag, dismissible via design, kept subtle) */
.asset-note{
  position:absolute; bottom:14px; right:14px;
  font-size:9px; letter-spacing:0.14em; text-transform:uppercase;
  color:rgba(243,238,228,0.45);
  border:1px solid var(--line-on-dark);
  padding:6px 10px;
  background:rgba(11,11,11,0.55);
}

/* ---------- Reveal on scroll ---------- */
.reveal{
  opacity:0;
  transform:translateY(24px);
  transition:opacity 800ms var(--ease), transform 800ms var(--ease);
}
.reveal.in-view{ opacity:1; transform:translateY(0); }

/* ---------- Grids / cards ---------- */
.grid{ display:grid; gap:1px; background:var(--line-on-dark); }
.bg-cream-section .grid{ background:var(--line-on-light); }

.col-card{
  background:var(--black);
  padding:40px 34px;
  transition:background 320ms var(--ease);
}
.bg-cream-section .col-card{ background:var(--cream); }
.col-card:hover{ background:var(--black-soft); }
.bg-cream-section .col-card:hover{ background:#ece5d5; }

.edit-card{
  border:1px solid var(--line-on-dark);
  padding:38px 32px;
  transition:transform 320ms var(--ease), border-color 320ms var(--ease);
}
.edit-card:hover{ transform:translateY(-5px); border-color:var(--gold-soft); }
.bg-cream-section .edit-card{ border:1px solid var(--line-on-light); }

.icon-num{
  font-family:var(--serif);
  font-size:13px;
  color:var(--gold);
  letter-spacing:0.05em;
}
.bg-cream-section .icon-num{ color:var(--gold-deep); }

.lens-item{
  border-top:1px solid var(--line-on-dark);
  padding:26px 22px 4px 0;
}
.lens-item:not(:first-child){
  border-left:1px solid var(--line-on-dark);
  padding-left:22px;
}
@media (max-width:768px){
  .lens-item:not(:first-child){ border-left:none; }
  .lens-item{ padding-left:0; }
}

.thin-icon{ width:34px; height:34px; color:var(--gold); }

/* image placeholder block (used where real photography will go) */
.photo-block{
  position:relative;
  overflow:hidden;
  background:linear-gradient(155deg,#181510 0%, #0c0c0c 60%, #060708 100%);
  border:1px solid var(--line-on-dark);
}
.photo-block.tone-light{
  background:linear-gradient(155deg,#2a2620 0%, #131211 60%, #0a0908 100%);
}
.photo-block .grain{
  position:absolute; inset:0;
  background-image:radial-gradient(rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size:3px 3px;
  opacity:0.35; mix-blend-mode:overlay;
}
.photo-block .tag{
  position:absolute; bottom:12px; left:12px;
  font-size:9px; letter-spacing:0.14em; text-transform:uppercase;
  color:rgba(243,238,228,0.5);
}

/* article/thinking cards */
.think-card{ }
.think-card .cover{ aspect-ratio:4/5; margin-bottom:18px; }
.think-card h3{ font-size:1.3rem; margin-bottom:10px; }
.think-card .read{
  font-size:11px; letter-spacing:0.14em; text-transform:uppercase; color:var(--gold);
  display:inline-flex; align-items:center; gap:8px;
}
.think-card .read svg{ width:12px; height:12px; flex-shrink:0; transition:transform 300ms var(--ease); }
.think-card:hover .read svg{ transform:translateX(4px); }
.think-card:hover .read{ color:var(--gold-deep); }
.bg-cream-section .think-card .read{ color:var(--gold-deep); }
.think-card .cover img{ transition:transform 500ms var(--ease); }
.think-card:hover .cover img{ transform:scale(1.04); }

/* ---------- Footer ---------- */
.site-footer{
  background:var(--black);
  padding:90px 6vw 40px;
  border-top:1px solid var(--line-on-dark);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:40px;
}
@media (max-width:900px){
  .footer-grid{ grid-template-columns:1fr 1fr; }
}
.footer-grid h4{
  font-size:11px; letter-spacing:0.16em; text-transform:uppercase; color:var(--gold); margin-bottom:18px; font-weight:600;
}
.footer-links{ list-style:none; padding:0; margin:0; display:flex; flex-direction:column; gap:12px; }
.footer-links a{ font-size:13px; color:var(--cream-3); }
.footer-links a:hover{ color:var(--gold); }
.footer-bottom{
  margin-top:70px; padding-top:26px; border-top:1px solid var(--line-on-dark);
  display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:16px;
  font-size:11px; letter-spacing:0.08em; color:var(--cream-3);
}
.social-row{ display:flex; gap:16px; }
.social-row a{
  width:34px; height:34px; border:1px solid var(--line-on-dark); border-radius:50%;
  display:flex; align-items:center; justify-content:center;
}
.social-row a:hover{ border-color:var(--gold); color:var(--gold); }

/* ---------- misc ---------- */
.placeholder{ color:var(--gold); font-style:italic; }
.kicker-quote{
  font-family:var(--serif); font-size:1.3rem; color:var(--cream); line-height:1.5;
}

@media (prefers-reduced-motion: reduce){
  *{ animation:none !important; transition:none !important; }
  .reveal{ opacity:1; transform:none; }
}

/* ============================================================
   MOBILE RESPONSIVENESS — global safety net
   Multi-column grids are set via inline style="grid-template-
   columns:repeat(N,1fr)" throughout the HTML. On narrow viewports
   fr-tracks refuse to shrink below their content's min-content,
   which was forcing the whole page wider than the viewport and
   causing horizontal scroll. Force every .grid to a single column
   below tablet width — !important is required to beat the inline
   style, and is intentional here.
   ============================================================ */
html, body{ max-width:100%; overflow-x:hidden; }

@media (max-width:768px){
  .grid{ grid-template-columns:1fr !important; }
  .grid > *{ min-width:0; }

  .section{ padding-left:7vw; padding-right:7vw; }
  .headline-xl{ font-size:clamp(2.2rem, 9vw, 3.4rem); }
  .headline-lg{ font-size:clamp(1.9rem, 7.5vw, 2.6rem); }

  /* index.html "About Saurav" two-column block */
  .max-wrap[style*="grid-template-columns:1fr 1fr"]{ grid-template-columns:1fr !important; }

  /* about.html portrait + copy two-column block */
  .max-wrap[style*="0.9fr 1.1fr"]{ grid-template-columns:1fr !important; gap:40px !important; }

  /* contact.html form + direct info two-column block */
  .max-wrap[style*="grid-template-columns:1fr 1fr"]{ gap:56px !important; }
}

@media (max-width:480px){
  .headline-xl{ font-size:2rem; }
  .headline-lg{ font-size:1.7rem; }
  .btn{ padding:14px 20px; font-size:10px; }
  .nav-mark span{ font-size:12px; }
}