/* =========================================================
   ARIF — Contemporary Visual Artist
   Stylesheet
   ========================================================= */

:root {
  --color-bg: #f7f4ee;
  --color-bg-alt: #efe9df;
  --color-ink: #221f1c;
  --color-ink-soft: #4a453f;
  --color-line: #ddd5c7;
  --color-accent: #a8461f;
  --color-accent-soft: #c97a4a;
  --color-cream: #fbf9f4;
  --font-serif: 'Playfair Display', 'Georgia', serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --container: 1180px;
  --transition: 0.45s cubic-bezier(0.22, 1, 0.36, 1);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  color: var(--color-ink);
  background: var(--color-bg);
  line-height: 1.65;
  font-size: 16px;
  overflow-x: hidden;
}

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

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

.wrap {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
}

section { position: relative; }

.eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-accent);
  font-weight: 600;
  margin-bottom: 18px;
}

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: 1.15;
  color: var(--color-ink);
}

h2.section-title {
  font-size: clamp(2rem, 4vw, 2.9rem);
  margin-bottom: 20px;
}

.section-head {
  max-width: 640px;
  margin-bottom: 56px;
}

.section-head p {
  color: var(--color-ink-soft);
  font-size: 1.05rem;
}

.section-head.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

/* ---------- Reveal on scroll ---------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.9s ease, transform 0.9s ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 30px;
  border-radius: 2px;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--color-ink);
  color: var(--color-cream);
}
.btn-primary:hover { background: var(--color-accent); }

.btn-outline {
  background: transparent;
  border-color: var(--color-ink);
  color: var(--color-ink);
}
.btn-outline:hover {
  background: var(--color-ink);
  color: var(--color-cream);
}

.btn-outline.light {
  border-color: rgba(251, 249, 244, 0.6);
  color: var(--color-cream);
}
.btn-outline.light:hover {
  background: var(--color-cream);
  color: var(--color-ink);
}

/* ---------- Header ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 26px 0;
  transition: var(--transition);
}

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

.site-header.scrolled {
  padding: 14px 0;
  background: rgba(247, 244, 238, 0.92);
  backdrop-filter: blur(10px);
  box-shadow: 0 1px 0 var(--color-line);
}

.logo {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  letter-spacing: 0.06em;
  font-weight: 700;
  color: var(--color-cream);
  transition: color var(--transition);
}
.site-header.scrolled .logo,
.site-header.solid .logo { color: var(--color-ink); }

.logo span { color: var(--color-accent-soft); }

.nav-links {
  display: flex;
  gap: 40px;
  list-style: none;
}

.nav-links a {
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--color-cream);
  position: relative;
  padding-bottom: 4px;
  transition: color var(--transition);
}

.site-header.scrolled .nav-links a,
.site-header.solid .nav-links a { color: var(--color-ink); }

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 1px;
  background: currentColor;
  transition: width var(--transition);
}
.nav-links a:hover::after { width: 100%; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 1100;
}
.nav-toggle span {
  width: 26px;
  height: 2px;
  background: var(--color-cream);
  transition: var(--transition);
}
.site-header.scrolled .nav-toggle span,
.site-header.solid .nav-toggle span { background: var(--color-ink); }

/* ---------- Hero ---------- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  background: linear-gradient(180deg, rgba(20, 17, 15, 0.55), rgba(20, 17, 15, 0.72)),
    url('../images/birds-of-bangladesh.jpg') center 30% / cover no-repeat;
}

.hero .wrap {
  position: relative;
  z-index: 2;
  padding-top: 120px;
}

.hero-eyebrow {
  color: var(--color-accent-soft);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 26px;
}

.hero h1 {
  color: var(--color-cream);
  font-size: clamp(3rem, 8vw, 5.6rem);
  letter-spacing: 0.01em;
  margin-bottom: 22px;
}

.hero-tagline {
  color: rgba(251, 249, 244, 0.88);
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  max-width: 560px;
  margin-bottom: 42px;
  font-weight: 300;
}

.hero-actions {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  margin-bottom: 90px;
}

.hero-meta {
  display: flex;
  gap: 48px;
  flex-wrap: wrap;
  padding-top: 28px;
  border-top: 1px solid rgba(251, 249, 244, 0.25);
  max-width: 620px;
}

.hero-meta div span {
  display: block;
}
.hero-meta .num {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  color: var(--color-cream);
}
.hero-meta .label {
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(251, 249, 244, 0.65);
  margin-top: 4px;
}

.scroll-cue {
  position: absolute;
  bottom: 40px;
  left: 32px;
  display: flex;
  align-items: center;
  gap: 12px;
  color: rgba(251, 249, 244, 0.7);
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  z-index: 2;
}
.scroll-cue::before {
  content: "";
  width: 34px;
  height: 1px;
  background: rgba(251, 249, 244, 0.6);
  animation: pulseLine 2.2s ease-in-out infinite;
}
@keyframes pulseLine {
  0%, 100% { width: 34px; opacity: 0.6; }
  50% { width: 54px; opacity: 1; }
}

/* ---------- About ---------- */
.about {
  padding: 140px 0 120px;
  background: var(--color-bg);
}

.about-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 72px;
  align-items: start;
}

.about-figure {
  position: sticky;
  top: 120px;
}

.about-figure .frame {
  position: relative;
  border: 1px solid var(--color-line);
  padding: 18px;
  background: var(--color-cream);
}

.about-figure img { width: 100%; }

.about-figure figcaption {
  margin-top: 16px;
  font-size: 0.8rem;
  color: var(--color-ink-soft);
  font-style: italic;
}

.about-copy h3 {
  font-size: 1.5rem;
  margin: 36px 0 14px;
}
.about-copy h3:first-child { margin-top: 0; }

.about-copy p {
  color: var(--color-ink-soft);
  margin-bottom: 16px;
  font-size: 1.02rem;
}

.about-copy p.lede {
  font-size: 1.18rem;
  color: var(--color-ink);
  font-weight: 400;
}

.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.badge {
  border: 1px solid var(--color-line);
  padding: 8px 16px;
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
  border-radius: 2px;
}

/* ---------- Gallery ---------- */
.gallery {
  padding: 120px 0;
  background: var(--color-bg-alt);
}

.gallery-note {
  font-size: 0.9rem;
  color: var(--color-ink-soft);
  border-left: 2px solid var(--color-accent);
  padding-left: 16px;
  margin-top: 10px;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.gallery-item {
  position: relative;
  overflow: hidden;
  cursor: pointer;
  background: var(--color-ink);
  aspect-ratio: 4 / 5;
}

.gallery-item.wide {
  grid-column: span 2;
  aspect-ratio: 16 / 10;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.5s ease;
}

.gallery-item:hover img {
  transform: scale(1.07);
}

.gallery-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 24px;
  background: linear-gradient(180deg, rgba(15, 13, 11, 0) 45%, rgba(15, 13, 11, 0.88) 100%);
  opacity: 0;
  transition: opacity var(--transition);
}
.gallery-item:hover .gallery-overlay { opacity: 1; }

.gallery-overlay .g-title {
  font-family: var(--font-serif);
  color: var(--color-cream);
  font-size: 1.25rem;
  margin-bottom: 4px;
}
.gallery-overlay .g-meta {
  color: rgba(251, 249, 244, 0.75);
  font-size: 0.8rem;
  letter-spacing: 0.03em;
}

.gallery-plus {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 34px;
  height: 34px;
  border: 1px solid rgba(251, 249, 244, 0.6);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-cream);
  opacity: 0;
  transform: scale(0.7);
  transition: var(--transition);
}
.gallery-item:hover .gallery-plus { opacity: 1; transform: scale(1); }

/* ---------- Lightbox ---------- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(17, 14, 12, 0.96);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s ease;
}
.lightbox.active { opacity: 1; visibility: visible; }

.lightbox-inner {
  max-width: 1100px;
  width: 100%;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 48px;
  align-items: center;
}

.lightbox-image {
  max-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.lightbox-image img {
  max-height: 80vh;
  max-width: 100%;
  width: auto;
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.5);
}

.lightbox-info .g-year {
  color: var(--color-accent-soft);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  font-size: 0.78rem;
  margin-bottom: 14px;
  display: block;
}

.lightbox-info h3 {
  color: var(--color-cream);
  font-size: 2rem;
  margin-bottom: 18px;
}

.lightbox-info dl {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 8px 18px;
  margin-bottom: 22px;
}
.lightbox-info dl > div { display: contents; }
.lightbox-info dl > div.lb-hidden { display: none; }
.lightbox-info dt {
  color: rgba(251, 249, 244, 0.5);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.lightbox-info dd {
  color: rgba(251, 249, 244, 0.92);
  font-size: 0.92rem;
}

.lightbox-info p {
  color: rgba(251, 249, 244, 0.75);
  font-size: 0.95rem;
  margin-bottom: 26px;
}

.lightbox-close {
  position: absolute;
  top: 28px;
  right: 32px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid rgba(251, 249, 244, 0.4);
  background: transparent;
  color: var(--color-cream);
  font-size: 1.4rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}
.lightbox-close:hover { background: rgba(251, 249, 244, 0.12); }

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 1px solid rgba(251, 249, 244, 0.4);
  background: transparent;
  color: var(--color-cream);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}
.lightbox-nav:hover { background: rgba(251, 249, 244, 0.12); }
.lightbox-prev { left: 24px; }
.lightbox-next { right: 24px; }

/* ---------- Exhibitions ---------- */
.exhibitions {
  padding: 120px 0;
  background: var(--color-bg);
}

.ex-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
}

.ex-col h3 {
  font-size: 1.3rem;
  margin-bottom: 30px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-line);
}

.timeline-item {
  display: grid;
  grid-template-columns: 70px 1fr;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--color-line);
}
.timeline-item:first-of-type { padding-top: 0; }

.timeline-year {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  color: var(--color-accent);
}

.timeline-body p {
  font-weight: 600;
  margin-bottom: 4px;
  font-size: 0.98rem;
}
.timeline-body span {
  color: var(--color-ink-soft);
  font-size: 0.88rem;
}

/* ---------- Contact ---------- */
.contact {
  padding: 130px 0;
  background: linear-gradient(180deg, rgba(20, 17, 15, 0.92), rgba(20, 17, 15, 0.96)),
    url('../images/cave-painting-2.jpg') center / cover no-repeat;
  color: var(--color-cream);
}

.contact .eyebrow { color: var(--color-accent-soft); }

.contact h2 { color: var(--color-cream); }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
}

.contact-intro p {
  color: rgba(251, 249, 244, 0.78);
  font-size: 1.05rem;
  margin-bottom: 34px;
}

.contact-detail {
  margin-bottom: 26px;
}
.contact-detail .label {
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(251, 249, 244, 0.5);
  margin-bottom: 6px;
}
.contact-detail .value {
  font-size: 1.1rem;
  font-family: var(--font-serif);
}
.contact-detail .value.placeholder {
  color: var(--color-accent-soft);
}

.placeholder-note {
  margin-top: 40px;
  padding: 16px 18px;
  border: 1px dashed rgba(251, 249, 244, 0.35);
  font-size: 0.82rem;
  color: rgba(251, 249, 244, 0.65);
  border-radius: 2px;
}
.placeholder-note strong { color: var(--color-accent-soft); }

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

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }

.contact-form label {
  display: block;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(251, 249, 244, 0.6);
  margin-bottom: 8px;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  background: rgba(251, 249, 244, 0.06);
  border: 1px solid rgba(251, 249, 244, 0.22);
  padding: 14px 16px;
  color: var(--color-cream);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  border-radius: 2px;
  transition: border-color var(--transition), background var(--transition);
}
.contact-form input::placeholder,
.contact-form textarea::placeholder { color: rgba(251, 249, 244, 0.35); }

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--color-accent-soft);
  background: rgba(251, 249, 244, 0.1);
}

.contact-form textarea { resize: vertical; min-height: 130px; }

.form-status {
  font-size: 0.85rem;
  color: var(--color-accent-soft);
  min-height: 20px;
}

/* ---------- Footer ---------- */
.site-footer {
  background: #17140f;
  color: rgba(251, 249, 244, 0.6);
  padding: 46px 0;
}
.footer-grid {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-grid .logo { color: var(--color-cream); font-size: 1.15rem; }
.footer-links { display: flex; gap: 28px; list-style: none; }
.footer-links a { font-size: 0.8rem; letter-spacing: 0.05em; }
.footer-links a:hover { color: var(--color-accent-soft); }
.copyright { font-size: 0.78rem; }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .about-grid, .ex-grid, .contact-grid { grid-template-columns: 1fr; }
  .about-figure { position: static; margin-bottom: 20px; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .gallery-item.wide { grid-column: span 2; aspect-ratio: 16 / 9; }
  .lightbox-inner { grid-template-columns: 1fr; }
  .lightbox-image img { max-height: 55vh; }
}

@media (max-width: 720px) {
  .nav-links {
    position: fixed;
    top: 0;
    right: 0;
    height: 100vh;
    width: min(78vw, 320px);
    background: var(--color-cream);
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    padding: 40px;
    gap: 28px;
    transform: translateX(100%);
    transition: transform var(--transition);
  }
  .nav-links.open { transform: translateX(0); }
  .nav-links a { color: var(--color-ink) !important; font-size: 1rem; }
  .nav-toggle { display: flex; }
  .nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle.open span:nth-child(2) { opacity: 0; }
  .nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .hero-meta { gap: 30px; }
  .gallery-grid { grid-template-columns: 1fr; }
  .gallery-item.wide { grid-column: span 1; aspect-ratio: 4 / 5; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { flex-direction: column; text-align: center; }
}