/* ==========================================================================
   Light & Dust — Street Photography Archive
   Design System: Dark Obsidian, High Contrast, Cinematic, Raw Editorial
   Copyright © Md. Raiyan Islam
   ========================================================================== */

:root {
  --bg-obsidian-950: #060608;
  --bg-obsidian-900: #0d0d12;
  --bg-obsidian-850: #121218;
  --bg-obsidian-800: #181822;

  --paper-50: #faf9f5;
  --paper-100: #f5f4ef;
  --paper-200: #e8e5d8;
  --paper-300: #c4c1b4;
  --paper-400: #8e8e9c;
  --paper-500: #5c5c6c;
  --paper-600: #3c3c4a;

  --film-accent: #e69947;
  --film-accent-glow: #f5aa56;
  --film-accent-dim: rgba(230, 153, 71, 0.15);

  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-medium: rgba(255, 255, 255, 0.14);
  --border-accent: rgba(230, 153, 71, 0.4);

  --scrollbar-thumb: #282834;
  --scrollbar-thumb-hover: #e69947;
  --scrollbar-track: #060608;

  --font-display: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-serif: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

:focus-visible {
  outline: 2px solid var(--film-accent);
  outline-offset: 3px;
}

.skip-to-content {
  position: fixed;
  top: -100px;
  left: 1rem;
  z-index: 100;
  background: var(--film-accent);
  color: var(--bg-obsidian-950);
  padding: 0.6rem 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: 9999px;
  text-decoration: none;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.8);
  transition: top 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.skip-to-content:focus {
  top: 1.25rem;
}

html {
  background-color: var(--bg-obsidian-950);
  color: var(--paper-200);
  font-family: var(--font-sans);
  scrollbar-color: var(--scrollbar-thumb) var(--scrollbar-track);
  scrollbar-width: thin;
}

body {
  background-color: var(--bg-obsidian-950);
  color: var(--paper-200);
  min-height: 100vh;
  min-height: -webkit-fill-available;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection {
  background-color: var(--film-accent);
  color: var(--bg-obsidian-950);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--scrollbar-track);
}
::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
  border-radius: 9999px;
  border: 2px solid var(--scrollbar-track);
  transition: background-color 0.2s ease;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--scrollbar-thumb-hover);
}
::-webkit-scrollbar-corner {
  background: var(--scrollbar-track);
}

@supports not (scrollbar-color: auto) {
  html::-webkit-scrollbar {
    width: 8px;
    height: 8px;
  }
  html::-webkit-scrollbar-thumb {
    background: var(--scrollbar-thumb);
    border-radius: 9999px;
  }
}

/* Typography Utilities */
.font-display { font-family: var(--font-display); }
.font-serif { font-family: var(--font-serif); }
.font-mono { font-family: var(--font-mono); }
.font-sans { font-family: var(--font-sans); }

.select-none {
  user-select: none;
  -webkit-user-select: none;
}

/* Layout Utilities */
.max-w-7xl {
  max-width: 80rem;
  margin-left: auto;
  margin-right: auto;
}

/* Header & Navbar - GPU accelerated & zero layout reflow with safe-area insets */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 40;
  padding-top: max(0.85rem, env(safe-area-inset-top));
  padding-bottom: 0.85rem;
  padding-left: max(1rem, env(safe-area-inset-left));
  padding-right: max(1rem, env(safe-area-inset-right));
  background-color: rgba(6, 6, 8, 0.94);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease, background-color 0.2s ease;
  transform: translateZ(0);
  will-change: transform;
}

.site-header.scrolled {
  background-color: rgba(6, 6, 8, 0.98);
  border-bottom-color: var(--border-subtle);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 80rem;
  margin: 0 auto;
  padding: 0 1rem;
}

@media (min-width: 768px) {
  .header-container {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
  }

  .brand-link {
    justify-self: start;
  }

  .desktop-nav {
    justify-self: center;
  }

  .header-right {
    justify-self: end;
    display: flex;
    align-items: center;
  }
}

.brand-link {
  text-decoration: none;
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.25em;
  color: var(--paper-50);
  transition: color 0.2s ease;
}

.brand-title:hover {
  color: var(--film-accent);
}

.brand-tagline {
  font-family: var(--font-sans);
  font-style: normal;
  font-size: 0.72rem;
  font-weight: 400;
  color: var(--paper-400);
  letter-spacing: 0.04em;
}

.desktop-nav {
  display: none;
  align-items: center;
  gap: 1.75rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

@media (min-width: 768px) {
  .desktop-nav {
    display: flex;
  }
}

.nav-link-btn {
  background: none;
  border: none;
  color: var(--paper-300);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  cursor: pointer;
  padding: 0.25rem 0;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: color 0.2s ease;
}

.nav-link-btn:hover {
  color: var(--film-accent);
}

.nav-link-btn.active {
  color: var(--film-accent);
  font-weight: 600;
}

.collections-dropdown-wrap {
  position: relative;
}

.collections-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  padding-top: 0.5rem;
  width: 17rem;
  z-index: 50;
}

.collections-dropdown-wrap:hover .collections-menu,
.collections-dropdown-wrap:focus-within .collections-menu {
  display: block;
}

.collections-menu-inner {
  background: rgba(13, 13, 18, 0.95);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-medium);
  border-radius: 0.75rem;
  padding: 0.5rem;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.7);
}

.collections-menu-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  text-align: left;
  padding: 0.5rem 0.75rem;
  border-radius: 0.5rem;
  border: none;
  background: none;
  color: var(--paper-300);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.collections-menu-item:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--paper-50);
}

.collections-menu-item.active {
  background: var(--film-accent-dim);
  color: var(--film-accent);
  font-weight: 600;
}

.header-status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  border: 1px solid var(--border-subtle);
  background: var(--bg-obsidian-900);
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--paper-400);
  cursor: pointer;
  transition: all 0.2s ease;
}

.header-status-badge:hover {
  border-color: var(--border-accent);
  color: var(--film-accent);
}

.mobile-menu-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-obsidian-900);
  border: 1px solid var(--border-subtle);
  color: var(--paper-200);
  padding: 0.5rem;
  border-radius: 0.5rem;
  cursor: pointer;
}

@media (min-width: 768px) {
  .mobile-menu-btn {
    display: none;
  }
}

.mobile-drawer {
  position: fixed;
  inset: 0;
  z-index: 35;
  background: rgba(6, 6, 8, 0.98);
  padding-top: max(5.5rem, calc(env(safe-area-inset-top) + 4.5rem));
  padding-bottom: max(2rem, env(safe-area-inset-bottom));
  padding-left: max(1.5rem, env(safe-area-inset-left));
  padding-right: max(1.5rem, env(safe-area-inset-right));
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  transition: opacity 0.25s ease, transform 0.25s ease;
}

.mobile-drawer.hidden {
  display: none;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-section {
  position: relative;
  min-height: 90vh;
  width: 100%;
  display: flex;
  align-items: flex-end;
  justify-content: flex-start;
  overflow: hidden;
  background-color: var(--bg-obsidian-950);
  padding: 6rem 1.5rem 3.5rem;
}

@media (min-width: 640px) {
  .hero-section {
    min-height: 100vh;
    padding: 7rem 2.5rem 4rem;
  }
}

.hero-bg-stage {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0.8;
  pointer-events: none;
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.hero-click-shield {
  position: absolute;
  inset: 0;
  z-index: 10;
}

.hero-gradient-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, var(--bg-obsidian-950) 0%, rgba(6, 6, 8, 0.4) 50%, rgba(6, 6, 8, 0.7) 100%);
  pointer-events: none;
}

.hero-radial-overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at center, transparent 35%, rgba(6, 6, 8, 0.9) 100%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 20;
  width: 100%;
  max-width: 80rem;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 2.5rem;
}

.hero-top-pill {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.pill-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(13, 13, 18, 0.7);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--border-subtle);
  border-radius: 9999px;
  padding: 0.3rem 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--paper-300);
}

.pill-badge-dot {
  width: 0.4rem;
  height: 0.4rem;
  border-radius: 50%;
  background-color: var(--film-accent);
}

.hero-identity {
  max-width: 50rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 8vw, 6.5rem);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  line-height: 0.95;
  color: var(--paper-50);
}

.hero-tagline {
  font-family: var(--font-sans);
  font-style: normal;
  font-size: clamp(1.1rem, 2.5vw, 1.8rem);
  font-weight: 300;
  color: var(--paper-300);
  letter-spacing: 0.02em;
  line-height: 1.4;
}

.hero-action-btn {
  margin-top: 1rem;
  align-self: flex-start;
  background: var(--paper-100);
  color: var(--bg-obsidian-950);
  border: none;
  border-radius: 9999px;
  padding: 0.85rem 2rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  cursor: pointer;
  transition: all 0.25s ease;
}

.hero-action-btn:hover {
  background: var(--film-accent);
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(230, 153, 71, 0.3);
}

.hero-bottom-bar {
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

@media (min-width: 768px) {
  .hero-bottom-bar {
    flex-direction: row;
    align-items: flex-end;
    justify-content: space-between;
  }
}

.hero-telemetry {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.hero-meta-title-line {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.hero-exif-line {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--paper-400);
}

.hero-controls {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  align-self: flex-end;
}

@media (min-width: 768px) {
  .hero-controls {
    align-self: auto;
  }
}

.control-btn-icon {
  background: rgba(13, 13, 18, 0.8);
  border: 1px solid var(--border-subtle);
  color: var(--paper-300);
  border-radius: 50%;
  padding: 0.5rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
}

.control-btn-icon:hover {
  color: var(--film-accent);
  border-color: var(--border-accent);
}

.control-btn-group {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  background: rgba(13, 13, 18, 0.8);
  border: 1px solid var(--border-subtle);
  border-radius: 9999px;
  padding: 0.25rem;
}

.control-btn-group button {
  background: none;
  border: none;
  color: var(--paper-300);
  border-radius: 50%;
  padding: 0.4rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
}

.control-btn-group button:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--paper-50);
}

/* ==========================================================================
   35mm Filmstrip (Auto-Scrolling Negative Strip)
   ========================================================================== */
.filmstrip-section {
  position: relative;
  width: 100%;
  padding: 2rem 0;
  background-color: var(--bg-obsidian-950);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.filmstrip-header {
  max-width: 80rem;
  margin: 0 auto 1rem;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.filmstrip-container {
  position: relative;
  width: 100%;
  background: #0d0d10;
  padding: 0.5rem 0;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.filmstrip-sprockets {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 0.5rem;
  overflow: hidden;
  opacity: 0.6;
  height: 1rem;
  user-select: none;
}

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

.sprocket-rect {
  width: 0.9rem;
  height: 0.5rem;
  border-radius: 2px;
  background: var(--bg-obsidian-950);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.filmstrip-scroll {
  display: flex;
  gap: 0.75rem;
  overflow-x: auto;
  overflow-y: hidden;
  padding: 0.5rem 1rem;
  scrollbar-width: none;
  -ms-overflow-style: none;
  -webkit-overflow-scrolling: touch;
  cursor: grab;
  user-select: none;
  -webkit-user-select: none;
  scroll-behavior: auto; /* Required for continuous delta-time JS auto-scroll */
}

.filmstrip-scroll:active {
  cursor: grabbing;
}

.filmstrip-scroll::-webkit-scrollbar {
  display: none;
}

.filmstrip-card {
  flex: none;
  width: 13.5rem;
  background: var(--bg-obsidian-900);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  overflow: hidden;
  cursor: pointer;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

@media (min-width: 640px) {
  .filmstrip-card {
    width: 15.5rem;
  }
}

.filmstrip-card:hover {
  border-color: var(--film-accent);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.6), 0 0 10px rgba(230, 153, 71, 0.2);
}

.filmstrip-thumb-wrap {
  position: relative;
  aspect-ratio: 3 / 2;
  width: 100%;
  background: var(--bg-obsidian-950);
  overflow: hidden;
}

.filmstrip-thumb-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  pointer-events: none;
  display: block;
}

.filmstrip-meta-strip {
  padding: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--paper-400);
  background: var(--bg-obsidian-900);
}

.filmstrip-meta-title {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 110px;
  color: var(--paper-200);
}

@media (min-width: 640px) {
  .filmstrip-meta-title {
    max-width: 135px;
  }
}

/* Accessibility: Respect Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  .filmstrip-scroll {
    scroll-behavior: smooth;
  }
}

/* ==========================================================================
   Collections Showcase
   ========================================================================== */
.collections-section {
  padding: 5rem 1.5rem;
  max-width: 80rem;
  margin: 0 auto;
}

.collections-header {
  margin-bottom: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 1.5rem;
}

@media (min-width: 640px) {
  .collections-header {
    flex-direction: row;
    align-items: flex-end;
    justify-content: space-between;
  }
}

.collections-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 640px) {
  .collections-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .collections-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.collection-card {
  position: relative;
  background: var(--bg-obsidian-900);
  border: 1px solid var(--border-subtle);
  border-radius: 0.75rem;
  padding: 0.75rem;
  cursor: pointer;
  transition: all 0.3s ease;
}

.collection-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
}

.collection-cover-wrap {
  position: relative;
  aspect-ratio: 4 / 3;
  width: 100%;
  overflow: hidden;
  border-radius: 0.5rem;
  background: var(--bg-obsidian-950);
}

.collection-cover-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  pointer-events: none;
  transition: transform 0.4s ease;
}

.collection-card:hover .collection-cover-wrap img {
  transform: scale(1.05);
}

.collection-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(6, 6, 8, 0.8) 0%, transparent 60%);
  pointer-events: none;
}

.collection-num-tag {
  position: absolute;
  top: 0.6rem;
  left: 0.6rem;
  background: rgba(6, 6, 8, 0.85);
  backdrop-filter: blur(4px);
  border: 1px solid var(--border-subtle);
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--film-accent);
}

.collection-count-tag {
  position: absolute;
  top: 0.6rem;
  right: 0.6rem;
  background: rgba(6, 6, 8, 0.85);
  backdrop-filter: blur(4px);
  border: 1px solid var(--border-subtle);
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--paper-300);
}

.collection-card-body {
  padding-top: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.collection-card-title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--paper-100);
  transition: color 0.2s ease;
}

.collection-card:hover .collection-card-title {
  color: var(--film-accent);
}

/* ==========================================================================
   Main Gallery Section
   ========================================================================== */
.gallery-section {
  padding: 3.5rem 1.5rem;
  max-width: 80rem;
  margin: 0 auto;
  min-height: 100vh;
}

.gallery-header {
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 1.25rem;
}

.gallery-top-row {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

@media (min-width: 640px) {
  .gallery-top-row {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

.gallery-title-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.gallery-heading {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 4vw, 2rem);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--paper-50);
}

.gallery-count-pill {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--film-accent);
  background: var(--film-accent-dim);
  border: 1px solid rgba(230, 153, 71, 0.25);
  padding: 0.15rem 0.65rem;
  border-radius: 9999px;
}

.gallery-controls-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.search-box {
  position: relative;
  width: 12rem;
}

@media (min-width: 640px) {
  .search-box {
    width: 15rem;
  }
}

.search-input {
  width: 100%;
  border-radius: 9999px;
  border: 1px solid var(--border-subtle);
  background: var(--bg-obsidian-900);
  padding: 0.35rem 2rem 0.35rem 2.2rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--paper-200);
  outline: none;
  transition: border-color 0.2s ease;
}

.search-input:focus {
  border-color: var(--film-accent);
}

.search-icon {
  position: absolute;
  left: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--paper-500);
  pointer-events: none;
}

.search-clear-btn {
  position: absolute;
  right: 0.6rem;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--paper-400);
  cursor: pointer;
  padding: 0.2rem;
}

.view-toggle-wrap {
  display: flex;
  align-items: center;
  background: var(--bg-obsidian-900);
  border: 1px solid var(--border-subtle);
  padding: 0.15rem;
  border-radius: 0.5rem;
}

.view-toggle-btn {
  background: none;
  border: none;
  color: var(--paper-400);
  padding: 0.35rem;
  border-radius: 0.35rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.view-toggle-btn.active {
  background: var(--film-accent);
  color: var(--bg-obsidian-950);
}

.collection-pills-scroll {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  overflow-x: auto;
  padding-bottom: 0.25rem;
  scrollbar-width: none;
}

.collection-pills-scroll::-webkit-scrollbar {
  display: none;
}

.filter-pill-btn {
  flex: none;
  border-radius: 9999px;
  padding: 0.35rem 0.95rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: var(--bg-obsidian-900);
  border: 1px solid var(--border-subtle);
  color: var(--paper-300);
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.filter-pill-btn:hover {
  color: var(--paper-50);
  border-color: var(--border-medium);
}

.filter-pill-btn.active {
  background: var(--film-accent);
  border-color: var(--film-accent);
  color: var(--bg-obsidian-950);
  font-weight: 700;
}

/* Gallery Layouts: Masonry & Grid */
.gallery-masonry {
  columns: 1;
  column-gap: 1.25rem;
}

@media (min-width: 640px) {
  .gallery-masonry {
    columns: 2;
  }
}

@media (min-width: 1024px) {
  .gallery-masonry {
    columns: 3;
  }
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
}

@media (min-width: 640px) {
  .gallery-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 768px) {
  .gallery-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (min-width: 1024px) {
  .gallery-grid {
    grid-template-columns: repeat(5, 1fr);
  }
}

/* Photo Card - Hardware isolated for 120fps scrolling */
.gallery-card {
  break-inside: avoid;
  margin-bottom: 1.25rem;
  background: var(--bg-obsidian-900);
  border: 1px solid var(--border-subtle);
  border-radius: 0.5rem;
  overflow: hidden;
  cursor: pointer;
  position: relative;
  transition: border-color 0.2s ease;
  contain: layout paint;
}

.gallery-card:hover {
  border-color: var(--border-accent);
}

.card-img-stage {
  position: relative;
  width: 100%;
  background: #101014;
  overflow: hidden;
}

.gallery-grid .card-img-stage {
  aspect-ratio: 1 / 1 !important;
}

.card-img-stage img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  pointer-events: none;
  transition: transform 0.25s ease;
}

.gallery-grid .card-img-stage img {
  height: 100%;
}

.gallery-card:hover .card-img-stage img {
  transform: scale(1.02);
}

.card-click-shield {
  position: absolute;
  inset: 0;
  z-index: 10;
}

.card-hover-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(6, 6, 8, 0.9) 0%, transparent 50%);
  opacity: 0;
  transition: opacity 0.2s ease;
  pointer-events: none;
}

.gallery-card:hover .card-hover-overlay {
  opacity: 1;
}

.card-hover-meta {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 0.75rem;
  opacity: 0;
  transition: opacity 0.2s ease;
  z-index: 15;
  pointer-events: none;
}

.gallery-card:hover .card-hover-meta {
  opacity: 1;
}

.card-bottom-bar {
  padding: 0.6rem 0.75rem;
  background: var(--bg-obsidian-900);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--paper-400);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.gallery-load-sentinel {
  padding: 2.5rem 0;
  display: flex;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--paper-500);
}

.load-more-btn {
  background: var(--bg-obsidian-900);
  border: 1px solid var(--border-subtle);
  color: var(--paper-300);
  border-radius: 9999px;
  padding: 0.5rem 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.load-more-btn:hover {
  border-color: var(--film-accent);
  color: var(--film-accent);
}

/* ==========================================================================
   Modals & Lightbox (Native HTML5 <dialog>)
   ========================================================================== */
dialog {
  border: none;
  background: transparent;
  color: var(--paper-100);
  max-width: 100vw;
  max-height: 100vh;
}

dialog::backdrop {
  background-color: rgba(4, 4, 6, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

/* Lightbox Modal */
#lightbox-dialog {
  margin: 0;
  width: 100vw;
  height: 100vh;
  max-width: 100vw;
  max-height: 100vh;
  padding: 0;
  border: none;
  background: transparent;
  outline: none;
  overflow: hidden;
}

#lightbox-dialog::backdrop {
  background: rgba(4, 4, 6, 0.96);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.lightbox-shell {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: rgba(6, 6, 8, 0.98);
  overflow: hidden;
  position: relative;
}

.lightbox-header {
  position: relative;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.65rem 1rem;
  background: rgba(6, 6, 8, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  gap: 0.5rem;
  min-height: 3.25rem;
  width: 100%;
}

.lightbox-header-left {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  min-width: 0;
  flex: 1;
  overflow: hidden;
}

.lightbox-header-counter {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--film-accent);
  white-space: nowrap;
  flex-shrink: 0;
}

.lightbox-header-divider {
  color: rgba(255, 255, 255, 0.2);
  flex-shrink: 0;
}

.lightbox-header-title {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--paper-50);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  min-width: 0;
  flex: 1;
}

.lightbox-header-badge {
  background: rgba(255, 255, 255, 0.1);
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  text-transform: uppercase;
  color: var(--paper-300);
  white-space: nowrap;
  flex-shrink: 0;
}

@media (max-width: 640px) {
  .lightbox-header-badge {
    display: none;
  }
}

.lightbox-header-right {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  flex-shrink: 0;
}

.lightbox-close-btn {
  background: rgba(255, 255, 255, 0.12) !important;
  color: var(--paper-50) !important;
  margin-left: 0.25rem;
}

.lightbox-stage-wrap {
  position: relative;
  display: flex;
  flex: 1;
  width: 100%;
  height: 100%;
  overflow: hidden;
  min-height: 0;
}

.lightbox-stage {
  position: relative;
  display: flex;
  flex: 1;
  width: 100%;
  height: 100%;
  min-width: 0;
  min-height: 0;
  align-items: center;
  justify-content: center;
  padding: 0.5rem;
  overflow: hidden;
  touch-action: pan-y;
}

.lightbox-img-scaler {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  max-width: 100%;
  max-height: 100%;
  transition: transform 0.25s ease-out;
}

.lightbox-img-scaler img {
  max-height: calc(100vh - 8.5rem);
  max-width: 95vw;
  width: auto;
  height: auto;
  object-fit: contain;
  border-radius: 2px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.95);
  pointer-events: none;
  user-select: none;
  display: block;
}

.lightbox-nav-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 35;
  background: rgba(13, 13, 18, 0.75);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: var(--paper-200);
  border-radius: 50%;
  width: 2.75rem;
  height: 2.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
  backdrop-filter: blur(8px);
}

.lightbox-nav-btn:hover {
  background: var(--film-accent);
  color: var(--bg-obsidian-950);
  transform: translateY(-50%) scale(1.08);
}

.lightbox-nav-prev { left: 0.75rem; }
.lightbox-nav-next { right: 0.75rem; }

@media (max-width: 640px) {
  .lightbox-nav-btn {
    width: 2.25rem;
    height: 2.25rem;
    background: rgba(13, 13, 18, 0.6);
  }
  .lightbox-nav-prev { left: 0.5rem; }
  .lightbox-nav-next { right: 0.5rem; }
}

/* Lightbox Sidebar (Responsive: Desktop docked, Mobile bottom sheet) */
@media (min-width: 1024px) {
  .lightbox-sidebar {
    width: 20rem;
    flex: none;
    border-left: 1px solid var(--border-subtle);
    background: rgba(8, 8, 12, 0.96);
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    overflow-y: auto;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    z-index: 25;
    transition: transform 0.25s ease, opacity 0.2s ease;
  }

  .lightbox-sidebar.is-hidden {
    display: none !important;
  }

  .lightbox-sidebar-mobile-bar {
    display: none;
  }
}

@media (max-width: 1023px) {
  .lightbox-sidebar {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    width: 100%;
    max-height: 70vh;
    border-left: none;
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 1.25rem 1.25rem 0 0;
    background: rgba(10, 10, 14, 0.98);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    box-shadow: 0 -10px 40px rgba(0, 0, 0, 0.9);
    padding: 1rem 1.25rem 2rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    overflow-y: auto;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    z-index: 50;
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.2s ease;
  }

  .lightbox-sidebar.is-hidden {
    transform: translateY(105%);
    opacity: 0;
    pointer-events: none;
  }

  .lightbox-sidebar-mobile-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }

  .mobile-sheet-pill {
    width: 2.5rem;
    height: 4px;
    border-radius: 2px;
    background: rgba(255, 255, 255, 0.25);
    margin: 0 auto;
  }

  .lightbox-sidebar-close-btn {
    background: rgba(255, 255, 255, 0.08);
    border: none;
    color: var(--paper-300);
    width: 1.75rem;
    height: 1.75rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 0.75rem;
  }
}

.lightbox-footer {
  position: relative;
  z-index: 35;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 1rem;
  background: rgba(6, 6, 8, 0.92);
  border-top: 1px solid var(--border-subtle);
  min-height: 3rem;
  gap: 0.75rem;
}

.lightbox-shortcuts-hint {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--paper-500);
  white-space: nowrap;
}

.lightbox-strip-thumbs {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  overflow-x: auto;
  scrollbar-width: none;
}

.lightbox-strip-thumbs::-webkit-scrollbar {
  display: none;
}

.lightbox-frame-number {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--film-accent);
  white-space: nowrap;
}

@media (max-width: 640px) {
  .lightbox-shortcuts-hint {
    display: none;
  }
  .lightbox-footer {
    justify-content: center;
    gap: 0.75rem;
  }
}

/* Centered Modals (Contact & License) */
.modal-centered {
  margin: auto;
  max-width: 34rem;
  width: 92vw;
  background: var(--bg-obsidian-900);
  border: 1px solid var(--border-medium);
  border-radius: 1rem;
  padding: 1.75rem;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.8);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 1rem;
  margin-bottom: 1.25rem;
}

.modal-close-btn {
  background: none;
  border: none;
  color: var(--paper-400);
  padding: 0.35rem;
  border-radius: 0.35rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.modal-close-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--paper-50);
}

/* Forms */
.form-group {
  margin-bottom: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.form-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--paper-400);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.form-input, .form-textarea {
  width: 100%;
  border-radius: 0.5rem;
  border: 1px solid var(--border-subtle);
  background: var(--bg-obsidian-950);
  padding: 0.6rem 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--paper-100);
  outline: none;
  transition: border-color 0.2s ease;
}

.form-input:focus, .form-textarea:focus {
  border-color: var(--film-accent);
}

.form-textarea {
  resize: none;
  min-height: 6rem;
}

/* Toast Alert */
.toast-alert {
  position: fixed;
  bottom: max(1.5rem, calc(1rem + env(safe-area-inset-bottom)));
  right: max(1.5rem, calc(1rem + env(safe-area-inset-right)));
  z-index: 60;
  display: flex;
  align-items: center;
  gap: 0.65rem;
  border-radius: 0.75rem;
  background: rgba(13, 13, 18, 0.95);
  border: 1px solid rgba(230, 153, 71, 0.35);
  padding: 0.75rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: #fde68a;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.8);
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  transition: all 0.25s ease;
}

.toast-alert.show {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

/* Footer with safe-area insets */
.site-footer {
  border-top: 1px solid var(--border-subtle);
  background-color: var(--bg-obsidian-950);
  color: var(--paper-300);
  padding-top: 4rem;
  padding-bottom: max(3rem, calc(1.5rem + env(safe-area-inset-bottom)));
  padding-left: max(1.5rem, env(safe-area-inset-left));
  padding-right: max(1.5rem, env(safe-area-inset-right));
}

.footer-inner {
  max-width: 80rem;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 3rem;
}

.footer-top {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

@media (min-width: 768px) {
  .footer-top {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-start;
  }
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--paper-500);
}

@media (min-width: 640px) {
  .footer-bottom {
    flex-direction: row;
  }
}

/* ==========================================================================
   Responsive Refinements & Touch Optimization (Mobile, Tablet, Foldables)
   ========================================================================== */

/* Universal Touch Targets (WCAG 2.2 Level AA: 44x44px minimum touch targets) */
@media (pointer: coarse) {
  .nav-link-btn,
  .collections-menu-item,
  .control-btn-icon,
  .view-toggle-btn,
  .filter-pill-btn,
  .modal-close-btn,
  .lightbox-nav-btn {
    min-height: 44px;
    min-width: 44px;
  }
}

/* Small Screens & Foldables (<= 480px) */
@media (max-width: 480px) {
  .hero-section {
    padding-left: 1rem;
    padding-right: 1rem;
    padding-bottom: 2.5rem;
  }

  .gallery-top-row {
    flex-direction: column;
    align-items: stretch;
  }

  .gallery-controls-group {
    width: 100%;
    justify-content: space-between;
  }

  .search-box {
    flex: 1;
    width: auto;
  }

  .lightbox-header {
    padding: 0.5rem 0.75rem;
  }

  .lightbox-nav-btn {
    width: 2.25rem;
    height: 2.25rem;
  }
}

/* Tablets & iPads (768px - 1024px) */
@media (min-width: 768px) and (max-width: 1024px) {
  .gallery-masonry {
    columns: 2;
  }
  .gallery-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Ultra-Wide Screens (>= 1440px) */
@media (min-width: 1440px) {
  .hero-content,
  .filmstrip-header,
  .collections-section,
  .gallery-section,
  .footer-inner,
  .header-container {
    max-width: 90rem;
  }
}