/* ===========================================================
   Riyansh Photography — shared stylesheet
   Used by: index.html, about.html, services.html, gallery.html, contact.html
=========================================================== */

:root{
  --black:#0a0a0a;
  --white:#ffffff;
  --off-white:#f6f5f3;
  --grey-600:#6e6e6e;
  --grey-400:#a8a8a8;
  --line-dark: rgba(255,255,255,0.14);
  --line-light: rgba(10,10,10,0.12);
  --serif: 'Fraunces', serif;
  --sans: 'Inter', sans-serif;
  --nav-h: 84px;
  box-sizing: border-box;
  padding-top: env(safe-area-inset-top, 0px);
  padding-bottom: env(safe-area-inset-bottom, 0px);
}
*,*::before,*::after{ box-sizing: inherit; }
html{
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + env(safe-area-inset-top, 0px));
}
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  *{ animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}
body{
  margin:0;
  background: var(--white);
  color: var(--black);
  font-family: var(--sans);
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img,svg{ max-width:100%; display:block; }
a{ color: inherit; text-decoration:none; }
button{ font-family: inherit; cursor:pointer; }
:focus-visible{ outline: 2px solid var(--black); outline-offset: 3px; }
body.dark-page :focus-visible{ outline-color: var(--white); }

.wrap{ max-width: 1180px; margin: 0 auto; padding: 0 6vw; }

/* ---------- NAV (fixed, shared) ---------- */
header.nav{
  position: fixed;
  top:0; left:0; right:0;
  z-index: 100;
  height: var(--nav-h);
  padding-top: env(safe-area-inset-top, 0px);
  display:flex;
  align-items:center;
  background: var(--black);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line-dark);
  transition: background .5s ease, border-color .5s ease;
}
/* only the home page starts with a transparent bar over its hero */
body.transparent-nav header.nav:not(.solid){
  background: transparent;
  border-color: transparent;
  backdrop-filter: none;
}
.nav-inner{
  width:100%; max-width: 1180px; margin: 0 auto; padding: 0 6vw;
  display:flex; align-items:center; justify-content: space-between;
}
.brand{ font-family: var(--serif); font-size: 1.28rem; font-weight: 600; letter-spacing: 0.01em; color: var(--white); }
.brand span{ font-style: italic; font-weight: 400; }
nav.links{ display:flex; gap: 2.4rem; }
nav.links a{
  font-size: 0.86rem; letter-spacing: 0.06em; color: var(--grey-400);
  position: relative; padding: 6px 0; transition: color .3s ease;
}
nav.links a:hover, nav.links a.active{ color: var(--white); }
nav.links a::after{
  content:''; position:absolute; left:0; bottom:0; width:0; height:1px;
  background: var(--white); transition: width .35s ease;
}
nav.links a:hover::after, nav.links a.active::after{ width:100%; }

.menu-btn{ display:none; flex-direction:column; gap:5px; background:none; border:none; padding: 8px; z-index: 110; }
.menu-btn span{ width: 22px; height: 1px; background: var(--white); transition: transform .3s ease, opacity .3s ease; }
.menu-btn.open span:nth-child(1){ transform: translateY(6px) rotate(45deg); }
.menu-btn.open span:nth-child(2){ opacity:0; }
.menu-btn.open span:nth-child(3){ transform: translateY(-6px) rotate(-45deg); }

.mobile-panel{
  position: fixed; inset:0; background: var(--black); z-index: 90;
  display:flex; flex-direction:column; align-items:center; justify-content:center; gap: 2rem;
  transform: translateY(-100%); transition: transform .5s cubic-bezier(.77,0,.18,1);
}
.mobile-panel.open{ transform: translateY(0); }
.mobile-panel a{ font-family: var(--serif); font-size: 2rem; color: var(--white); }
.mobile-panel a.active{ font-style: italic; }

/* ---------- HERO (home only) ---------- */
section.hero{
  position:relative; min-height: 100svh; background: var(--black); color: var(--white);
  display:flex; align-items:center; overflow:hidden;
  padding-top: calc(var(--nav-h) + env(safe-area-inset-top, 0px));
}
.hero-inner{
  width:100%; max-width:1180px; margin:0 auto; padding: 0 6vw;
  display:grid; grid-template-columns: 1.3fr 0.9fr; align-items:center; gap: 2rem;
}
.hero-eyebrow{ font-size: 0.82rem; letter-spacing: 0.14em; color: var(--grey-400); margin: 0 0 1.4rem; opacity:0; animation: rise .9s ease .2s forwards; }
.hero h1{ font-family: var(--serif); font-weight: 300; font-size: clamp(3rem, 8vw, 6.4rem); line-height: 0.98; margin: 0; letter-spacing: -0.01em; }
.hero h1 em{ font-style: italic; font-weight: 400; }
.hero h1 .line{ display:block; overflow:hidden; }
.hero h1 .line span{ display:block; transform: translateY(110%); animation: rise 1s cubic-bezier(.22,1,.36,1) forwards; }
.hero h1 .line:nth-child(1) span{ animation-delay: .05s; }
.hero h1 .line:nth-child(2) span{ animation-delay: .18s; }
.hero p.tag{ max-width: 34ch; margin: 1.8rem 0 2.6rem; color: var(--grey-400); font-size: 1.02rem; line-height: 1.6; opacity:0; animation: rise .9s ease .5s forwards; }
.hero .cta-row{ display:flex; gap: 1rem; flex-wrap: wrap; opacity:0; animation: rise .9s ease .65s forwards; }
@keyframes rise{ to{ opacity:1; transform: translateY(0); } from{ opacity:0; } }

.btn{
  display:inline-flex; align-items:center; gap: .6rem; padding: 0.95rem 1.7rem;
  font-size: 0.92rem; letter-spacing: 0.02em; border: 1px solid currentColor;
  transition: background .35s ease, color .35s ease, transform .3s ease;
}
.btn:hover{ transform: translateY(-2px); }
.btn-solid-light{ background: var(--white); color: var(--black); border-color: var(--white); }
.btn-solid-light:hover{ background: transparent; color: var(--white); }
.btn-outline-light{ color: var(--white); }
.btn-outline-light:hover{ background: var(--white); color: var(--black); }
.btn-solid-dark{ background: var(--black); color: var(--white); border-color: var(--black); }
.btn-solid-dark:hover{ background: transparent; color: var(--black); }
.btn-outline-dark{ color: var(--black); }
.btn-outline-dark:hover{ background: var(--black); color: var(--white); }

.aperture-wrap{ position:relative; aspect-ratio: 1/1; max-width: 420px; justify-self: end; }
.aperture-wrap svg{ width:100%; height:100%; }
.blade{ transform-origin: 150px 150px; animation: bladeOpen 1.6s cubic-bezier(.22,1,.36,1) forwards; }
@keyframes bladeOpen{ from{ transform: rotate(-38deg) scale(1.35); opacity: 0; } to{ transform: rotate(0deg) scale(1); opacity: 1; } }
.ring{ animation: spin 60s linear infinite; transform-origin: 150px 150px; }
@keyframes spin{ to{ transform: rotate(360deg); } }

.scroll-cue{ position:absolute; bottom: 2.6rem; left: 6vw; display:flex; align-items:center; gap: .7rem; color: var(--grey-400); font-size: 0.78rem; letter-spacing: 0.08em; }
.scroll-cue .stick{ width:1px; height: 34px; background: var(--grey-400); position:relative; overflow:hidden; }
.scroll-cue .stick::after{ content:''; position:absolute; left:0; top:-100%; width:100%; height:100%; background: var(--white); animation: drip 1.8s ease-in-out infinite; }
@keyframes drip{ 0%{ top:-100%; } 60%{ top:100%; } 100%{ top:100%; } }

/* ---------- home teaser links ---------- */
section.teasers{ background: var(--white); padding: clamp(4.5rem, 9vw, 7rem) 0; }
.teaser-grid{ display:grid; grid-template-columns: repeat(4,1fr); gap: 1px; background: var(--line-light); border: 1px solid var(--line-light); }
.teaser-card{ background: var(--white); padding: 2.4rem 1.8rem; transition: background .35s ease; }
.teaser-card:hover{ background: var(--off-white); }
.teaser-card .num{ font-size: .78rem; color: var(--grey-600); letter-spacing: .06em; }
.teaser-card h3{ font-family: var(--serif); font-weight: 400; font-size: 1.4rem; margin: .8rem 0 .6rem; }
.teaser-card p{ margin:0; color: var(--grey-600); font-size: .92rem; line-height:1.55; }
.teaser-card .go{ margin-top:1.2rem; font-size:.82rem; display:inline-flex; align-items:center; gap:.4rem; }
@media (max-width: 900px){ .teaser-grid{ grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px){ .teaser-grid{ grid-template-columns: 1fr; } }

/* ---------- reveal on scroll ---------- */
.reveal{ opacity:0; transform: translateY(36px); transition: opacity .9s cubic-bezier(.22,1,.36,1), transform .9s cubic-bezier(.22,1,.36,1); }
.reveal.in{ opacity:1; transform: translateY(0); }
.reveal-delay-1.in{ transition-delay: .08s; }
.reveal-delay-2.in{ transition-delay: .16s; }
.reveal-delay-3.in{ transition-delay: .24s; }
.reveal-delay-4.in{ transition-delay: .32s; }

/* ---------- generic page section shell ---------- */
main{ display:block; padding-top: var(--nav-h); }
section{ padding: clamp(5rem, 11vw, 8.5rem) 0; }
.eyebrow{ font-size: 0.8rem; letter-spacing: 0.12em; color: var(--grey-600); margin: 0 0 .9rem; }
body.dark-page .eyebrow{ color: var(--grey-400); }
h2.head{ font-family: var(--serif); font-weight: 300; font-size: clamp(2.2rem, 4.6vw, 3.4rem); line-height: 1.06; margin: 0 0 1.6rem; max-width: 16ch; }
h2.head em{ font-style: italic; font-weight: 400; }

/* ---------- ABOUT ---------- */
section.about{ background: var(--white); }
.about-grid{ display:grid; grid-template-columns: 0.85fr 1.15fr; gap: clamp(2.5rem, 6vw, 5rem); align-items:center; }
.lens-art{ position:relative; }
.lens-art svg{ width:100%; height:auto; }
.about-copy p{ font-size: 1.05rem; line-height: 1.85; color: #2b2b2b; max-width: 54ch; margin: 0 0 1.3rem; }
.stat-row{ display:flex; gap: clamp(2rem, 5vw, 3.6rem); margin-top: 2.6rem; padding-top: 2rem; border-top: 1px solid var(--line-light); }
.stat b{ display:block; font-family: var(--serif); font-size: 2.1rem; font-weight: 400; }
.stat span{ font-size: 0.8rem; letter-spacing: 0.05em; color: var(--grey-600); }
section.philosophy{ background: var(--off-white); }
.phi-grid{ display:grid; grid-template-columns: repeat(3,1fr); gap: 2.4rem; }
.phi-card{ border-top: 1px solid var(--line-light); padding-top: 1.4rem; }
.phi-card h4{ font-family: var(--serif); font-weight: 400; font-size: 1.25rem; margin: 0 0 .6rem; }
.phi-card p{ margin:0; color: var(--grey-600); font-size: .95rem; line-height:1.6; }
@media (max-width: 720px){ .phi-grid{ grid-template-columns: 1fr; } }

/* ---------- SERVICES ---------- */
section.services{ background: var(--black); color: var(--white); }
.service-row{ display:grid; grid-template-columns: 1.1fr 1.6fr auto; align-items:center; gap: 1.5rem; padding: 1.9rem 0; border-top: 1px solid var(--line-dark); transition: padding-left .4s ease; }
.services-list .service-row:last-child{ border-bottom: 1px solid var(--line-dark); }
.service-row:hover{ padding-left: 0.6rem; }
.service-row h3{ font-family: var(--serif); font-weight: 400; font-size: clamp(1.3rem, 2.6vw, 1.9rem); margin:0; }
.service-row p{ margin:0; color: var(--grey-400); font-size: 0.96rem; line-height: 1.6; max-width: 46ch; }
.service-row .arrow{ width: 34px; height: 34px; border: 1px solid var(--line-dark); border-radius: 50%; display:flex; align-items:center; justify-content:center; flex-shrink:0; transition: background .35s ease, transform .35s ease, border-color .35s ease; }
.service-row:hover .arrow{ background: var(--white); border-color: var(--white); transform: rotate(45deg); }
.service-row .arrow svg{ width:14px; height:14px; stroke: var(--white); transition: stroke .35s ease; }
.service-row:hover .arrow svg{ stroke: var(--black); }
section.process{ background: var(--near-black,#141414); color: var(--white); border-top: 1px solid var(--line-dark); }
.process-grid{ display:grid; grid-template-columns: repeat(4,1fr); gap: 1.8rem; }
.process-step .k{ font-family: var(--serif); font-style: italic; font-size: 1.6rem; color: var(--grey-400); }
.process-step h4{ font-weight: 500; font-size: 1rem; margin: .5rem 0 .5rem; }
.process-step p{ margin:0; font-size: .88rem; color: var(--grey-400); line-height:1.55; }
@media (max-width: 800px){ .process-grid{ grid-template-columns: 1fr 1fr; row-gap:2.4rem; } }
@media (max-width: 500px){ .process-grid{ grid-template-columns: 1fr; } }

/* ---------- GALLERY ---------- */
section.gallery{ background: var(--off-white); }
.gallery-head{ display:flex; align-items:flex-end; justify-content:space-between; gap:2rem; margin-bottom: 3rem; flex-wrap: wrap; }
.gallery-head p{ color: var(--grey-600); max-width: 34ch; line-height:1.6; margin:0; }
.gal-grid{ display:grid; grid-template-columns: repeat(6, 1fr); grid-auto-rows: 130px; gap: 14px; }
.gal-item{ position:relative; overflow:hidden; cursor: pointer; }
.gal-item:nth-child(1){ grid-column: span 3; grid-row: span 3; }
.gal-item:nth-child(2){ grid-column: span 3; grid-row: span 2; }
.gal-item:nth-child(3){ grid-column: span 3; grid-row: span 2; }
.gal-item:nth-child(4){ grid-column: span 2; grid-row: span 2; }
.gal-item:nth-child(5){ grid-column: span 4; grid-row: span 2; }
.gal-item .art{ position:absolute; inset:0; width:100%; height:100%; object-fit:cover; transition: transform 1s cubic-bezier(.22,1,.36,1); }
.gal-item:hover .art{ transform: scale(1.06); }
.gal-item .grain{
  position:absolute; inset:0; opacity:0.5; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.35'/%3E%3C/svg%3E");
}
.gal-item .cap{ position:absolute; left:0; right:0; bottom:0; padding: 1.1rem 1.2rem; display:flex; justify-content:space-between; align-items:flex-end; color: var(--white); background: linear-gradient(to top, rgba(0,0,0,0.62), transparent 70%); transform: translateY(8px); opacity: 0; transition: opacity .4s ease, transform .4s ease; }
.gal-item:hover .cap{ opacity:1; transform: translateY(0); }
.gal-item .cap .n{ font-family: var(--serif); font-style: italic; font-size: 1.15rem; }
.gal-item .cap .i{ font-size: 0.75rem; letter-spacing: 0.08em; color: var(--grey-400); }
@media (max-width: 720px){
  .gal-grid{ grid-template-columns: repeat(2, 1fr); grid-auto-rows: 190px; }
  .gal-item:nth-child(1){ grid-column: span 2; grid-row: span 2; }
  .gal-item:nth-child(2){ grid-column: span 1; grid-row: span 1; }
  .gal-item:nth-child(3){ grid-column: span 1; grid-row: span 1; }
  .gal-item:nth-child(4){ grid-column: span 1; grid-row: span 1; }
  .gal-item:nth-child(5){ grid-column: span 1; grid-row: span 1; }
  .gal-item .cap{ opacity:1; transform:translateY(0); background: linear-gradient(to top, rgba(0,0,0,0.72), transparent 80%); }
}

/* ---------- CONTACT ---------- */
section.contact{ background: var(--black); color: var(--white); }
.contact-grid{ display:grid; grid-template-columns: 1.1fr 0.9fr; gap: clamp(2.5rem, 6vw, 5rem); align-items:end; }
.contact-grid h2.head{ max-width: 11ch; }
.contact-actions{ display:flex; flex-direction: column; gap: 1rem; }
.contact-btn{ display:flex; align-items:center; justify-content:space-between; padding: 1.5rem 1.7rem; border: 1px solid var(--line-dark); transition: background .35s ease, border-color .35s ease; }
.contact-btn:hover{ background: rgba(255,255,255,0.06); border-color: var(--grey-400); }
.contact-btn .left{ display:flex; align-items:center; gap:1rem; }
.contact-btn .icon{ width: 42px; height:42px; border-radius: 50%; background: var(--white); display:flex; align-items:center; justify-content:center; flex-shrink:0; }
.contact-btn .icon svg{ width:18px; height:18px; stroke: var(--black); fill:none; }
.contact-btn .icon.wa svg{ fill: var(--black); stroke:none; }
.contact-btn .label{ font-size: 0.78rem; letter-spacing:0.06em; color: var(--grey-400); margin-bottom:2px; }
.contact-btn .value{ font-family: var(--serif); font-size: 1.3rem; }
.contact-btn .go{ width:30px; height:30px; border:1px solid var(--line-dark); border-radius:50%; display:flex; align-items:center; justify-content:center; transition: transform .35s ease; flex-shrink:0; }
.contact-btn:hover .go{ transform: rotate(45deg); }
.contact-btn .go svg{ width:12px; height:12px; stroke:var(--white); }
.info-block{ padding-top: 0.4rem; }
.info-block .row{ display:flex; justify-content:space-between; padding: 1.05rem 0; border-top: 1px solid var(--line-dark); font-size: 0.95rem; }
.info-block .row:last-child{ border-bottom: 1px solid var(--line-dark); }
.info-block .row span:first-child{ color: var(--grey-400); }

/* ---------- FOOTER (shared) ---------- */
footer{
  background: var(--black); color: var(--grey-400); border-top: 1px solid var(--line-dark);
  padding: 2.2rem 0; font-size: 0.82rem; display:flex; justify-content:space-between; flex-wrap:wrap; gap: .8rem;
}
footer .brand{ font-size: 1rem; }
footer nav{ display:flex; gap: 1.4rem; }
footer nav a{ color: var(--grey-400); transition: color .3s ease; }
footer nav a:hover{ color: var(--white); }

/* ---------- FLOATING WHATSAPP (shared) ---------- */
.float-wa{
  position: fixed; right: 1.5rem; bottom: calc(1.5rem + env(safe-area-inset-bottom, 0px));
  width: 58px; height: 58px; border-radius: 50%; background: var(--black); border: 1px solid var(--line-dark);
  display:flex; align-items:center; justify-content:center; z-index: 80;
  box-shadow: 0 10px 30px rgba(0,0,0,0.35); transition: transform .3s ease;
}
.float-wa:hover{ transform: scale(1.08); }
.float-wa svg{ width:26px; height:26px; fill: var(--white); }

@media (max-width: 900px){
  nav.links{ display:none; }
  .menu-btn{ display:flex; }
  .hero-inner{ grid-template-columns: 1fr; }
  .aperture-wrap{ justify-self:center; margin-top: 3rem; max-width: 260px; }
  .about-grid, .contact-grid{ grid-template-columns: 1fr; }
  .lens-art{ max-width: 260px; margin: 0 auto 1rem; }
  .service-row{ grid-template-columns: 1fr auto; }
  .service-row p{ display:none; }
}