:root {
  --bg: #fbfbfd;
  --text: #1d1d1f;
  --text-muted: #6e6e73;
  --text-faint: #86868b;
  --radius: 14px;
  --max-width: 1280px;
  --gutter: 16px;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", Helvetica, Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000000;
    --text: #f5f5f7;
    --text-muted: #a1a1a6;
    --text-faint: #6e6e73;
  }
}

* {
  box-sizing: border-box;
}

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  font-size: 17px;
  line-height: 1.5;
  letter-spacing: -0.01em;
  -webkit-tap-highlight-color: transparent;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- Gallery (Masonry) ---------- */

.gallery {
  padding: 16px;
  column-count: 3;
  column-gap: var(--gutter);
}

@media (max-width: 900px) {
  .gallery {
    column-count: 2;
    padding: 20px;
  }
}

@media (max-width: 560px) {
  .gallery {
    column-count: 1;
    padding: 16px;
  }
}

.gallery__item {
  appearance: none;
  -webkit-appearance: none;
  display: block;
  width: 100%;
  margin: 0 0 var(--gutter);
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  break-inside: avoid;
  border-radius: var(--radius);
  overflow: hidden;
  cursor: zoom-in;
  transition: transform 500ms var(--ease-out);
  opacity: 0;
  transform: translateY(12px);
  animation: fadeUp 700ms var(--ease-out) forwards;
}

.gallery__item:focus-visible {
  outline: 2px solid var(--text);
  outline-offset: 3px;
}

.gallery__item:hover {
  transform: translateY(-2px);
}

.gallery__item img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  transition: transform 800ms var(--ease-out);
}

.gallery__item:hover img {
  transform: scale(1.02);
}

@keyframes fadeUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.gallery__empty {
  text-align: center;
  padding: 80px 16px;
  color: var(--text-muted);
}

/* ---------- Lightbox ---------- */

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.78);
  backdrop-filter: blur(28px) saturate(140%);
  -webkit-backdrop-filter: blur(28px) saturate(140%);
  opacity: 0;
  pointer-events: none;
  transition: opacity 280ms var(--ease);
  padding: 32px;
}

.lightbox[data-open="true"] {
  opacity: 1;
  pointer-events: auto;
}

.lightbox__figure {
  margin: 0;
  max-width: min(92vw, 1600px);
  max-height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  transform: scale(0.98);
  transition: transform 320ms var(--ease-out);
}

.lightbox[data-open="true"] .lightbox__figure {
  transform: scale(1);
}

.lightbox__image {
  display: block;
  max-width: 100%;
  max-height: calc(100vh - 140px);
  width: auto;
  height: auto;
  border-radius: 6px;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.6);
  user-select: none;
  -webkit-user-drag: none;
}

.lightbox__caption {
  color: rgba(255, 255, 255, 0.72);
  font-size: 13px;
  letter-spacing: 0.01em;
  text-align: center;
  font-weight: 400;
  min-height: 1em;
}

.lightbox__close,
.lightbox__nav {
  position: absolute;
  border: 0;
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  transition: background 200ms var(--ease), transform 200ms var(--ease);
}

.lightbox__close:hover,
.lightbox__nav:hover {
  background: rgba(255, 255, 255, 0.18);
}

.lightbox__close:active,
.lightbox__nav:active {
  transform: scale(0.94);
}

.lightbox__close {
  top: 24px;
  right: 24px;
}

.lightbox__nav--prev {
  left: 24px;
  top: 50%;
  transform: translateY(-50%);
}

.lightbox__nav--next {
  right: 24px;
  top: 50%;
  transform: translateY(-50%);
}

.lightbox__nav--prev:active {
  transform: translateY(-50%) scale(0.94);
}

.lightbox__nav--next:active {
  transform: translateY(-50%) scale(0.94);
}

@media (max-width: 560px) {
  .lightbox {
    padding: 16px;
  }
  .lightbox__close {
    top: 14px;
    right: 14px;
  }
  .lightbox__nav--prev {
    left: 8px;
  }
  .lightbox__nav--next {
    right: 8px;
  }
  .lightbox__image {
    max-height: calc(100vh - 110px);
  }
}

body.lightbox-open {
  overflow: hidden;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .gallery__item {
    opacity: 1;
    transform: none;
  }
}