/* ==========================================================================
   MINIMALIST GALLERY STYLESHEET
   Crisp white canvas, ultra-clean masonry grid, stark modern typography
   ========================================================================== */

:root {
  --bg: #ffffff;
  --bg-subtle: #f7f7f6;
  --bg-glass: rgba(255, 255, 255, 0.92);
  --text-primary: #0a0a0a;
  --text-secondary: #5a5a58;
  --text-muted: #8c8c88;
  --border: #e6e6e3;
  --border-strong: #0a0a0a;

  --font-sans: "Plus Jakarta Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --max-width: 1560px;
  --gutter: clamp(1.25rem, 3.5vw, 3.5rem);
  --grid-gap: clamp(1.25rem, 2.2vw, 2.25rem);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--bg);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

body.lightbox-open {
  overflow: hidden;
}

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

/* ==========================================================================
   HEADER & COLLAPSIBLE INDEX DRAWER
   ========================================================================== */

.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  position: relative;
  z-index: 30;
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.35rem var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 0.65rem;
  flex-wrap: wrap;
}

.brand-title {
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.brand-divider {
  color: var(--text-muted);
  font-weight: 300;
}

.brand-subtitle {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 400;
}

.header-meta {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.meta-coords {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}

.text-btn {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-primary);
  padding: 0.25rem 0;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease, opacity 0.2s ease;
}

.text-btn:hover,
.text-btn[aria-expanded="true"] {
  border-bottom-color: var(--text-primary);
}

/* About / Index Drawer */
.about-drawer {
  border-top: 1px solid var(--border);
  background: var(--bg-subtle);
}

.about-drawer[hidden] {
  display: none;
}

.about-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2.5rem var(--gutter);
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 3rem;
}

.about-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.85rem;
}

.about-copy {
  font-size: 0.95rem;
  color: var(--text-primary);
  max-width: 52ch;
  line-height: 1.65;
}

.index-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.index-item-btn {
  display: flex;
  justify-content: space-between;
  width: 100%;
  font-size: 0.85rem;
  padding: 0.2rem 0;
  color: var(--text-secondary);
  border-bottom: 1px dotted var(--border);
  transition: color 0.15s ease;
}

.index-item-btn:hover {
  color: var(--text-primary);
}

.index-item-meta {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 1.25rem;
}

.contact-link {
  font-size: 0.88rem;
  color: var(--text-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--border);
  transition: text-decoration-color 0.2s ease;
}

.contact-link:hover {
  text-decoration-color: var(--text-primary);
}

.colophon-note {
  font-size: 0.78rem;
  color: var(--text-muted);
}

kbd {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 0.1rem 0.35rem;
  border: 1px solid var(--border);
  background: var(--bg);
}

/* ==========================================================================
   STICKY FILTER CONTROLS BAR
   ========================================================================== */

.gallery-main {
  flex: 1;
}

.controls-bar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--bg-glass);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.controls-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0.85rem var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
}

.trip-tabs {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  padding: 0.15rem 0;
}

.trip-tabs::-webkit-scrollbar {
  display: none;
}

.trip-tab {
  display: inline-flex;
  align-items: baseline;
  gap: 0.45rem;
  padding: 0.48rem 0.9rem;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text-secondary);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  white-space: nowrap;
  transition: all 0.18s var(--ease-out);
}

.trip-tab:hover {
  border-color: var(--text-primary);
  color: var(--text-primary);
}

.trip-tab.active {
  background: var(--text-primary);
  border-color: var(--text-primary);
  color: var(--bg);
}

.trip-tab-count {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  opacity: 0.65;
}

.view-controls {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.share-trip-btn {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.45rem 0.75rem;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  transition: border-color 0.2s ease, color 0.2s ease;
}

.share-trip-btn:hover {
  border-color: var(--text-primary);
  color: var(--text-primary);
}

.density-switcher {
  display: inline-flex;
  border: 1px solid var(--border);
}

.density-btn {
  padding: 0.42rem 0.55rem;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: color 0.15s ease, background-color 0.15s ease;
}

.density-btn + .density-btn {
  border-left: 1px solid var(--border);
}

.density-btn:hover {
  color: var(--text-primary);
}

.density-btn.active {
  color: var(--text-primary);
  background: var(--bg-subtle);
}

/* ==========================================================================
   ACTIVE TRIP EDITORIAL BANNER
   ========================================================================== */

.trip-banner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2.75rem var(--gutter) 2rem;
}

.trip-banner-inner {
  border-bottom: 1px solid var(--border);
  padding-bottom: 2rem;
}

.trip-banner-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.trip-eyebrow {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.45rem;
}

.trip-heading {
  font-size: clamp(1.65rem, 3vw, 2.5rem);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.15;
}

.trip-stats {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.stat-pill {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.3rem 0.6rem;
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  color: var(--text-secondary);
}

.trip-description {
  margin-top: 1rem;
  font-size: 0.95rem;
  color: var(--text-secondary);
  max-width: 68ch;
  line-height: 1.65;
}

.trip-description:empty {
  display: none;
}

/* ==========================================================================
   MASONRY GALLERY GRID
   ========================================================================== */

.gallery-section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0.5rem var(--gutter) 5rem;
}

.masonry-grid {
  column-gap: var(--grid-gap);
  width: 100%;
}

.masonry-grid.cols-3 {
  column-count: 3;
}

.masonry-grid.cols-2 {
  column-count: 2;
}

.photo-card {
  break-inside: avoid;
  margin-bottom: var(--grid-gap);
  cursor: zoom-in;
  position: relative;
  opacity: 0;
  transform: translateY(12px);
  animation: cardFadeIn 0.45s var(--ease-out) forwards;
}

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

.photo-frame {
  position: relative;
  width: 100%;
  overflow: hidden;
  background-color: var(--bg-subtle);
}

/* Aspect ratio placeholders to keep layout ultra-clean before image load */
.photo-frame[data-aspect="portrait"] {
  aspect-ratio: 3 / 4;
}

.photo-frame[data-aspect="landscape"] {
  aspect-ratio: 4 / 3;
}

.photo-frame[data-aspect="wide"] {
  aspect-ratio: 16 / 10;
}

.photo-frame[data-aspect="square"] {
  aspect-ratio: 1 / 1;
}

.photo-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.65s var(--ease-out), opacity 0.35s ease;
}

.photo-card:hover .photo-img {
  transform: scale(1.018);
}

.photo-caption-bar {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  padding-top: 0.65rem;
}

.photo-card-title {
  font-size: 0.84rem;
  font-weight: 500;
  color: var(--text-primary);
  transition: color 0.15s ease;
}

.photo-card-meta {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

/* ==========================================================================
   FULL-SCREEN LIGHTBOX VIEWER
   ========================================================================== */

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.985);
  display: grid;
  grid-template-rows: auto 1fr auto;
  padding: 1.25rem var(--gutter);
  animation: lbFade 0.2s ease;
}

.lightbox[hidden] {
  display: none;
}

@keyframes lbFade {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.lightbox-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}

.lightbox-counter {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.lb-divider {
  color: var(--text-muted);
}

.lb-trip-tag {
  text-transform: uppercase;
  color: var(--text-secondary);
}

.lightbox-actions {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.lb-action-btn,
.lb-close-btn {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.35rem 0.65rem;
  border: 1px solid var(--border);
  background: var(--bg);
  transition: border-color 0.15s ease;
}

.lb-action-btn:hover,
.lb-close-btn:hover {
  border-color: var(--text-primary);
}

.esc-hint {
  color: var(--text-muted);
  font-size: 0.68rem;
}

.lightbox-stage {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 0;
  padding: 1.5rem 3.5rem;
}

.lb-figure {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lb-img-wrapper {
  max-width: 100%;
  max-height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

#lb-image {
  max-width: 100%;
  max-height: calc(100vh - 230px);
  width: auto;
  height: auto;
  object-fit: contain;
  display: block;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.06);
  transition: opacity 0.2s ease;
}

.lb-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  border: 1px solid var(--border);
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.lb-nav:hover {
  border-color: var(--text-primary);
}

.lb-prev {
  left: 0;
}

.lb-next {
  right: 0;
}

.lightbox-footer {
  border-top: 1px solid var(--border);
  padding-top: 1rem;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}

.lb-meta-primary {
  max-width: 62ch;
}

.lb-title {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.lb-location {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 0.15rem;
}

.lb-caption {
  font-size: 0.86rem;
  color: var(--text-secondary);
  margin-top: 0.45rem;
}

.lb-meta-exif {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
}

.exif-item {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.exif-label {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
}

.exif-val {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--text-primary);
}

/* ==========================================================================
   FOOTER
   ========================================================================== */

.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.75rem var(--gutter);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.footer-left {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}

/* ==========================================================================
   RESPONSIVE BREAKPOINTS
   ========================================================================== */

@media (max-width: 1024px) {
  .masonry-grid.cols-3 {
    column-count: 2;
  }

  .about-inner {
    grid-template-columns: 1fr;
    gap: 1.75rem;
  }
}

@media (max-width: 680px) {
  .meta-coords,
  .brand-subtitle,
  .brand-divider,
  .density-switcher,
  .esc-hint {
    display: none;
  }

  .masonry-grid.cols-3,
  .masonry-grid.cols-2 {
    column-count: 1;
  }

  .lightbox-stage {
    padding: 0.75rem 0;
  }

  .lb-nav {
    top: auto;
    bottom: 0.5rem;
    transform: none;
    width: 38px;
    height: 38px;
  }

  .lb-prev {
    left: auto;
    right: 46px;
  }

  #lb-image {
    max-height: calc(100vh - 280px);
  }
}