/* =========================================================
   LUMIÈRE — MONET GALLERY  |  style.css
   ========================================================= */

/* ── Design Tokens ─────────────────────────────────────── */
:root {
  --bg:          #0d0c0f;
  --bg-2:        #13111a;
  --bg-card:     #18161f;
  --bg-glass:    rgba(24, 22, 31, 0.72);
  --border:      rgba(255,255,255,0.07);
  --border-glow: rgba(180,148,255,0.25);

  --text-primary:   #f0ecff;
  --text-secondary: #a69bbf;
  --text-muted:     #5e5678;

  --accent:      #b494ff;
  --accent-2:    #ffc88a;
  --accent-glow: rgba(180, 148, 255, 0.18);

  --radius-sm:   8px;
  --radius-md:   16px;
  --radius-lg:   24px;

  --ease-out:    cubic-bezier(0.22, 1, 0.36, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);

  --font-serif: 'Cormorant Garamond', Georgia, serif;
  --font-sans:  'Inter', system-ui, sans-serif;

  --header-h: 68px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; }
a  { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; background: none; font: inherit; }

/* ── Scrollbar ──────────────────────────────────────────── */
::-webkit-scrollbar            { width: 6px; }
::-webkit-scrollbar-track     { background: var(--bg); }
::-webkit-scrollbar-thumb     { background: var(--accent); border-radius: 99px; }

/* =========================================================
   HEADER
   ========================================================= */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  padding: 0 clamp(1.5rem, 5vw, 4rem);
  background: transparent;
  transition: background 0.4s var(--ease-out), backdrop-filter 0.4s var(--ease-out),
              border-bottom 0.4s var(--ease-out);
}

.site-header.scrolled {
  background: var(--bg-glass);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--text-primary);
  transition: color 0.2s;
}
.logo:hover { color: var(--accent); }
.logo-icon {
  color: var(--accent);
  font-size: 1rem;
  animation: spin-slow 12s linear infinite;
}
@keyframes spin-slow {
  to { transform: rotate(360deg); }
}

.nav { display: flex; gap: 2rem; }
.nav-link {
  font-size: 0.875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
  position: relative;
  transition: color 0.2s;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -3px; left: 0;
  width: 0; height: 1px;
  background: var(--accent);
  transition: width 0.3s var(--ease-out);
}
.nav-link:hover { color: var(--text-primary); }
.nav-link:hover::after { width: 100%; }

/* =========================================================
   HERO
   ========================================================= */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: var(--header-h) 2rem 0;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 60% 40%, rgba(180,148,255,0.13) 0%, transparent 70%),
    radial-gradient(ellipse 60% 40% at 20% 80%, rgba(255,200,138,0.09) 0%, transparent 60%),
    var(--bg);
  animation: hero-pulse 8s ease-in-out infinite alternate;
}
@keyframes hero-pulse {
  from { opacity: 0.9; }
  to   { opacity: 1; }
}

/* Decorative grain overlay */
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 780px;
}

.hero-eyebrow {
  font-size: 0.75rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.25rem;
  opacity: 0;
  animation: fade-up 0.8s var(--ease-out) 0.2s forwards;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(3rem, 8vw, 6.5rem);
  font-weight: 300;
  line-height: 1.05;
  letter-spacing: -0.01em;
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: fade-up 0.9s var(--ease-out) 0.4s forwards;
}
.hero-title em {
  font-style: italic;
  color: var(--accent);
}

.hero-subtitle {
  font-size: clamp(0.95rem, 2vw, 1.15rem);
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto 2.5rem;
  line-height: 1.75;
  opacity: 0;
  animation: fade-up 0.9s var(--ease-out) 0.6s forwards;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 2.25rem;
  background: var(--accent);
  color: #0d0c0f;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-radius: 99px;
  box-shadow: 0 0 32px rgba(180,148,255,0.35);
  transition: transform 0.25s var(--ease-spring), box-shadow 0.25s var(--ease-out);
  opacity: 0;
  animation: fade-up 0.9s var(--ease-out) 0.8s forwards;
}
.btn-primary:hover {
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 0 48px rgba(180,148,255,0.5);
}

/* Scroll hint */
.hero-scroll-hint {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  width: 24px; height: 40px;
  border: 2px solid var(--border-glow);
  border-radius: 99px;
  display: flex;
  justify-content: center;
  padding-top: 6px;
}
.hero-scroll-hint span {
  display: block;
  width: 4px; height: 8px;
  background: var(--accent);
  border-radius: 99px;
  animation: scroll-dot 2.2s ease-in-out infinite;
}
@keyframes scroll-dot {
  0%   { transform: translateY(0); opacity: 1; }
  80%  { transform: translateY(14px); opacity: 0; }
  100% { transform: translateY(0); opacity: 0; }
}

/* =========================================================
   GALLERY SECTION
   ========================================================= */
.gallery-section {
  max-width: 1400px;
  margin: 0 auto;
  padding: 6rem clamp(1.5rem, 5vw, 4rem) 8rem;
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 300;
  letter-spacing: -0.01em;
  margin-bottom: 0.75rem;
}

.section-subtitle {
  color: var(--text-secondary);
  font-size: 1rem;
}

/* ── Filter Bar ─────────────────────────────────────────── */
.filter-bar {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.625rem;
  margin-bottom: 3.5rem;
}

.filter-btn {
  padding: 0.5rem 1.25rem;
  border-radius: 99px;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  background: transparent;
  transition: all 0.25s var(--ease-out);
}
.filter-btn:hover {
  border-color: var(--border-glow);
  color: var(--text-primary);
  background: var(--accent-glow);
}
.filter-btn.active {
  background: var(--accent);
  color: #0d0c0f;
  border-color: var(--accent);
  font-weight: 500;
  box-shadow: 0 0 20px rgba(180,148,255,0.3);
}

/* ── Gallery Grid (Masonry via CSS columns) ─────────────── */
.gallery-grid {
  columns: 3;
  column-gap: 1.5rem;
}

@media (max-width: 1100px) { .gallery-grid { columns: 2; } }
@media (max-width: 640px)  { .gallery-grid { columns: 1; } }

/* ── Art Card ───────────────────────────────────────────── */
.art-card {
  break-inside: avoid;
  margin-bottom: 1.5rem;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--bg-card);
  border: 1px solid var(--border);
  cursor: pointer;
  position: relative;
  transition: transform 0.35s var(--ease-spring), box-shadow 0.35s var(--ease-out);

  /* Entrance animation */
  opacity: 0;
  transform: translateY(32px);
}

.art-card.visible {
  animation: card-in 0.65s var(--ease-out) forwards;
}

@keyframes card-in {
  to { opacity: 1; transform: translateY(0); }
}

.art-card.hidden {
  display: none;
}

.art-card:hover {
  transform: translateY(-6px) scale(1.015);
  box-shadow:
    0 24px 64px rgba(0,0,0,0.5),
    0 0 0 1px var(--border-glow),
    0 0 40px -8px rgba(180,148,255,0.2);
}

.art-card-img-wrap {
  position: relative;
  overflow: hidden;
}

.art-card-img {
  width: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.6s var(--ease-out);
}
.art-card:hover .art-card-img {
  transform: scale(1.06);
}

/* Sheen effect */
.art-card-img-wrap::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.05) 0%, transparent 60%);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s;
}
.art-card:hover .art-card-img-wrap::after { opacity: 1; }

/* Overlay on hover */
.art-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(13,12,15,0.85) 0%, transparent 55%);
  display: flex;
  align-items: flex-end;
  padding: 1.5rem;
  opacity: 0;
  transition: opacity 0.35s var(--ease-out);
}
.art-card:hover .art-card-overlay { opacity: 1; }

.art-card-overlay-label {
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

.art-card-body {
  padding: 1.25rem 1.25rem 1.5rem;
}

.art-card-tag {
  display: inline-block;
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-glow);
  border: 1px solid var(--border-glow);
  border-radius: 99px;
  padding: 0.2rem 0.65rem;
  margin-bottom: 0.625rem;
}

.art-card-title {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 400;
  line-height: 1.25;
  margin-bottom: 0.375rem;
  color: var(--text-primary);
}

.art-card-year {
  font-size: 0.8rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}

/* =========================================================
   ABOUT SECTION
   ========================================================= */
.about-section {
  background: var(--bg-2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 7rem clamp(1.5rem, 5vw, 4rem);
}

.about-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
}

@media (max-width: 900px) {
  .about-inner {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
}

.about-body {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.85;
  margin-bottom: 1rem;
}

.about-quote {
  padding: 3rem;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(180,148,255,0.08), rgba(255,200,138,0.05));
  border: 1px solid var(--border-glow);
  position: relative;
}
.about-quote::before {
  content: '\201C';
  position: absolute;
  top: 1rem; left: 1.5rem;
  font-family: var(--font-serif);
  font-size: 6rem;
  line-height: 1;
  color: var(--accent);
  opacity: 0.2;
}

.quote-text {
  font-family: var(--font-serif);
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  font-style: italic;
  font-weight: 300;
  line-height: 1.45;
  margin-bottom: 1.25rem;
  color: var(--text-primary);
  position: relative;
  z-index: 1;
}

.quote-cite {
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  font-style: normal;
}

/* =========================================================
   FOOTER
   ========================================================= */
.site-footer {
  text-align: center;
  padding: 2.5rem 2rem;
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
}

/* =========================================================
   LIGHTBOX
   ========================================================= */
.lightbox-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(7, 6, 10, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s var(--ease-out);
}
.lightbox-overlay.open {
  opacity: 1;
  pointer-events: all;
}

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 201;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s var(--ease-out);
}
.lightbox.open {
  opacity: 1;
  pointer-events: all;
}

.lightbox-inner {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 0;
  max-width: 1100px;
  width: 100%;
  max-height: 90vh;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: 0 40px 120px rgba(0,0,0,0.7), 0 0 0 1px var(--border-glow);
  transform: scale(0.92) translateY(20px);
  transition: transform 0.45s var(--ease-spring);
}
.lightbox.open .lightbox-inner {
  transform: scale(1) translateY(0);
}

@media (max-width: 800px) {
  .lightbox-inner { grid-template-columns: 1fr; }
}

.lightbox-image-wrap {
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #0a090e;
  min-height: 400px;
}

.lightbox-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  max-height: 90vh;
  transition: opacity 0.3s;
}

.lightbox-info {
  padding: 2.5rem 2rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  border-left: 1px solid var(--border);
  overflow-y: auto;
}

.lightbox-tag {
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-glow);
  border: 1px solid var(--border-glow);
  border-radius: 99px;
  padding: 0.2rem 0.75rem;
  display: inline-block;
  margin-bottom: 1rem;
  width: fit-content;
}

.lightbox-title {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 300;
  line-height: 1.2;
  margin-bottom: 1rem;
}

.lightbox-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.8;
  margin-bottom: 1.5rem;
}

.lightbox-meta {
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
  padding-top: 1rem;
}

/* Close button */
.lightbox-close {
  position: fixed;
  top: 1.5rem; right: 1.5rem;
  z-index: 202;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  backdrop-filter: blur(12px);
  color: var(--text-secondary);
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s, color 0.2s, transform 0.2s var(--ease-spring);
}
.lightbox-close:hover {
  background: var(--accent);
  color: #0d0c0f;
  transform: scale(1.1) rotate(90deg);
}

/* Nav buttons */
.lightbox-nav {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  z-index: 202;
  width: 52px; height: 52px;
  border-radius: 50%;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  backdrop-filter: blur(12px);
  color: var(--text-primary);
  font-size: 1.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s, transform 0.2s var(--ease-spring), box-shadow 0.2s;
  line-height: 0;
}
.lightbox-prev { left: 1rem; }
.lightbox-next { right: 1rem; }
.lightbox-nav:hover {
  background: var(--accent);
  color: #0d0c0f;
  box-shadow: 0 0 24px rgba(180,148,255,0.45);
  transform: translateY(-50%) scale(1.1);
}

/* =========================================================
   SHARED UTILITIES & ANIMATIONS
   ========================================================= */
@keyframes fade-up {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0); }
}