/* ============================================
   Pixel Art Gallery — Warm & Cozy Styles
   ============================================ */

/* Font: Fusion Pixel | Copyright (c) 2022, TakWolf | Reserved Font Name: 'Fusion Pixel' | SIL Open Font License 1.1 */
@font-face {
  font-family: 'Fusion Pixel';
  src: url('/fonts/fusion-pixel-font-10px-monospaced-otf.woff2-v2026.07.01/fusion-pixel-10px-monospaced-zh_hans.otf.woff2') format('woff2');
  font-display: swap;
}

/* --- CSS Custom Properties (Light Theme) --- */
:root {
  --bg-start: #fef9ef;
  --bg-end: #fdf0d5;
  --text-color: #4a3728;
  --text-muted: #a0806e;
  --text-heading: #7f5f4e;
  --accent: #e07a5f;
  --accent-dark: #c96a52;
  --accent-gold: #f0c060;
  --header-bg: #7f5f4e;
  --header-border: #6b4f3e;
  --header-text: #fffaf5;
  --card-bg: #fffaf5;
  --card-border: #e0c9a6;
  --card-shadow: #d4b896;
  --card-shadow-ambient: rgba(0, 0, 0, 0.05);
  --card-hover-shadow: #d4b896;
  --card-hover-ambient: rgba(0, 0, 0, 0.06);
  --art-image-bg: #fdf0d5;
  --art-image-border: #e0c9a6;
  --filter-bg: #fffaf5;
  --filter-border: #e0c9a6;
  --filter-text: #7f5f4e;
  --filter-active-bg: #e07a5f;
  --filter-active-text: #fffaf5;
  --filter-active-border: #c96a52;
  --filter-shadow: #d4b896;
  --filter-active-shadow: #c96a52;
  --footer-bg: #7f5f4e;
  --footer-border: #6b4f3e;
  --footer-text: #fffaf5;
  --footer-link: #e0c9a6;
  --lightbox-bg: #fffaf5;
  --lightbox-border: #e0c9a6;
  --lightbox-shadow: rgba(0, 0, 0, 0.3);
  --lightbox-panel-bg: #fdf0d5;
  --lightbox-panel-border: #e0c9a6;
  --lightbox-title: #7f5f4e;
  --lightbox-title-border: #e0c9a6;
  --lightbox-desc: #4a3728;
  --btn-bg: #e07a5f;
  --btn-border: #c96a52;
  --btn-text: #fffaf5;
  --btn-shadow: #c96a52;
  --hero-subtitle: #e07a5f;
  --maintenance-dot-bg: #e07a5f;
  --maintenance-dot-border: #c96a52;
}

/* --- Dark Theme (星空) --- */
[data-theme="dark"] {
  --bg-start: #0a0e27;
  --bg-end: #1a1a3e;
  --text-color: #e8e0d0;
  --text-muted: #b8b0a0;
  --text-heading: #f0c060;
  --accent: #f0c060;
  --accent-dark: #d4a040;
  --accent-gold: #f0c060;
  --header-bg: #1a1a3e;
  --header-border: #2a2a5e;
  --header-text: #e8e0d0;
  --card-bg: #1e2040;
  --card-border: #2a2a5e;
  --card-shadow: #10102a;
  --card-shadow-ambient: rgba(0, 0, 0, 0.2);
  --card-hover-shadow: #10102a;
  --card-hover-ambient: rgba(0, 0, 0, 0.25);
  --art-image-bg: #151630;
  --art-image-border: #2a2a5e;
  --filter-bg: #1e2040;
  --filter-border: #2a2a5e;
  --filter-text: #e8e0d0;
  --filter-active-bg: #f0c060;
  --filter-active-text: #1a1a3e;
  --filter-active-border: #d4a040;
  --filter-shadow: #10102a;
  --filter-active-shadow: #d4a040;
  --footer-bg: #1a1a3e;
  --footer-border: #2a2a5e;
  --footer-text: #e8e0d0;
  --footer-link: #f0c060;
  --lightbox-bg: #1e2040;
  --lightbox-border: #2a2a5e;
  --lightbox-shadow: rgba(0, 0, 0, 0.5);
  --lightbox-panel-bg: #151630;
  --lightbox-panel-border: #2a2a5e;
  --lightbox-title: #f0c060;
  --lightbox-title-border: #2a2a5e;
  --lightbox-desc: #e8e0d0;
  --btn-bg: #f0c060;
  --btn-border: #d4a040;
  --btn-text: #1a1a3e;
  --btn-shadow: #d4a040;
  --hero-subtitle: #f0c060;
  --maintenance-dot-bg: #f0c060;
  --maintenance-dot-border: #d4a040;
}

/* Starfield background for dark mode — fixed-position starry sky */
[data-theme="dark"] body {
  background: linear-gradient(180deg, var(--bg-start) 0%, var(--bg-end) 100%);
}

/* Fixed star overlay — all static stars (bright + regular), ~39 total */
[data-theme="dark"] body::before {
  content: '';
  position: fixed;
  top: 0; left: 0;
  width: 100vw; height: 100vh;
  pointer-events: none;
  z-index: 0;
  background:
    /* --- bright stars (8 × 3-5px, high opacity) --- */
    radial-gradient(circle 5px at 12% 18%, rgba(255, 255, 255, 1), transparent),
    radial-gradient(circle 4px at 78% 12%, rgba(255, 255, 255, 0.95), transparent),
    radial-gradient(circle 5px at 35% 75%, rgba(255, 255, 255, 1), transparent),
    radial-gradient(circle 4px at 88% 68%, rgba(255, 255, 255, 0.9), transparent),
    radial-gradient(circle 5px at 52% 8%, rgba(255, 255, 255, 0.95), transparent),
    radial-gradient(circle 3px at 8% 55%, rgba(255, 255, 255, 1), transparent),
    radial-gradient(circle 4px at 65% 35%, rgba(255, 255, 255, 0.9), transparent),
    radial-gradient(circle 5px at 42% 88%, rgba(255, 255, 255, 0.95), transparent),
    /* --- regular stars (31 × 2-3px) --- */
    radial-gradient(circle 2px at 20% 8%, rgba(255, 255, 255, 0.8), transparent),
    radial-gradient(circle 3px at 45% 15%, rgba(255, 255, 255, 0.75), transparent),
    radial-gradient(circle 2px at 62% 22%, rgba(255, 255, 255, 0.7), transparent),
    radial-gradient(circle 2px at 8% 42%, rgba(255, 255, 255, 0.75), transparent),
    radial-gradient(circle 3px at 30% 55%, rgba(255, 255, 255, 0.8), transparent),
    radial-gradient(circle 2px at 55% 48%, rgba(255, 255, 255, 0.65), transparent),
    radial-gradient(circle 2px at 72% 38%, rgba(255, 255, 255, 0.75), transparent),
    radial-gradient(circle 3px at 92% 32%, rgba(255, 255, 255, 0.7), transparent),
    radial-gradient(circle 2px at 15% 68%, rgba(255, 255, 255, 0.75), transparent),
    radial-gradient(circle 2px at 48% 82%, rgba(255, 255, 255, 0.8), transparent),
    radial-gradient(circle 3px at 65% 70%, rgba(255, 255, 255, 0.7), transparent),
    radial-gradient(circle 2px at 82% 88%, rgba(255, 255, 255, 0.75), transparent),
    radial-gradient(circle 2px at 3% 25%, rgba(255, 255, 255, 0.7), transparent),
    radial-gradient(circle 2px at 28% 5%, rgba(255, 255, 255, 0.65), transparent),
    radial-gradient(circle 3px at 85% 5%, rgba(255, 255, 255, 0.75), transparent),
    radial-gradient(circle 2px at 95% 15%, rgba(255, 255, 255, 0.7), transparent),
    radial-gradient(circle 2px at 38% 30%, rgba(255, 255, 255, 0.65), transparent),
    radial-gradient(circle 2px at 68% 50%, rgba(255, 255, 255, 0.75), transparent),
    radial-gradient(circle 3px at 80% 60%, rgba(255, 255, 255, 0.7), transparent),
    radial-gradient(circle 2px at 5% 80%, rgba(255, 255, 255, 0.75), transparent),
    radial-gradient(circle 2px at 25% 92%, rgba(255, 255, 255, 0.7), transparent),
    radial-gradient(circle 2px at 55% 95%, rgba(255, 255, 255, 0.65), transparent),
    radial-gradient(circle 3px at 75% 28%, rgba(255, 255, 255, 0.75), transparent),
    radial-gradient(circle 2px at 18% 45%, rgba(255, 255, 255, 0.7), transparent),
    radial-gradient(circle 2px at 42% 60%, rgba(255, 255, 255, 0.65), transparent),
    radial-gradient(circle 2px at 58% 32%, rgba(255, 255, 255, 0.75), transparent),
    radial-gradient(circle 2px at 90% 50%, rgba(255, 255, 255, 0.7), transparent),
    radial-gradient(circle 2px at 33% 10%, rgba(255, 255, 255, 0.65), transparent),
    radial-gradient(circle 2px at 70% 80%, rgba(255, 255, 255, 0.75), transparent),
    radial-gradient(circle 2px at 12% 90%, rgba(255, 255, 255, 0.7), transparent),
    radial-gradient(circle 2px at 50% 35%, rgba(255, 255, 255, 0.65), transparent);
}

/* Twinkling overlay stars — fixed, animated separately */
[data-theme="dark"] body::after {
  content: '';
  position: fixed;
  top: 0; left: 0;
  width: 100vw; height: 100vh;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(circle 5px at 22% 28%, rgba(255, 255, 255, 1), transparent 70%),
    radial-gradient(circle 5px at 58% 12%, rgba(255, 255, 255, 0.9), transparent 70%),
    radial-gradient(circle 5px at 75% 55%, rgba(255, 255, 255, 1), transparent 70%),
    radial-gradient(circle 4px at 40% 42%, rgba(255, 255, 255, 0.9), transparent 70%),
    radial-gradient(circle 5px at 88% 25%, rgba(255, 255, 255, 0.95), transparent 70%);
  animation: twinkle 4s ease-in-out infinite alternate;
}

@keyframes twinkle {
  0%   { opacity: 0.25; }
  40%  { opacity: 1; }
  100% { opacity: 0.35; }
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--text-color);
  background: linear-gradient(180deg, var(--bg-start) 0%, var(--bg-end) 100%);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* --- Scroll Progress Bar --- */
.scroll-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  background: var(--accent);
  z-index: 10001;
  transition: width 0.1s linear;
  pointer-events: none;
}

/* --- Header --- */
.site-header {
  background: var(--header-bg);
  border-bottom: 4px solid var(--header-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--header-text);
}

.logo-icon {
  font-family: 'Courier New', monospace;
  font-size: 1.5rem;
  letter-spacing: -2px;
}

.logo-text {
  font-family: 'Press Start 2P', 'Courier New', monospace;
  font-size: 1rem;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.site-nav a {
  font-family: 'Press Start 2P', 'Courier New', monospace;
  font-size: 0.75rem;
  color: var(--header-text);
  text-decoration: none;
  padding: 0.8rem 1.5rem;
  border: 2px solid transparent;
  border-radius: 6px;
  transition: border-color 0.2s;
}

.site-nav a:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* --- Theme Toggle Button --- */
.theme-toggle {
  font-family: 'Press Start 2P', 'Apple Color Emoji', 'Segoe UI Emoji', 'Noto Color Emoji', sans-serif;
  font-size: 0.9rem;
  background: transparent;
  border: 2px solid transparent;
  border-radius: 6px;
  padding: 0.6rem 0.9rem;
  cursor: pointer;
  color: var(--header-text);
  transition: border-color 0.2s, color 0.2s;
  line-height: 1;
}

.theme-toggle:hover {
  border-color: var(--accent-gold);
  color: var(--accent-gold);
}

/* --- Language Toggle Button --- */
.lang-toggle {
  font-family: 'Press Start 2P', 'Apple Color Emoji', 'Segoe UI Emoji', 'Noto Color Emoji', sans-serif;
  font-size: 0.65rem;
  background: transparent;
  border: 2px solid transparent;
  border-radius: 6px;
  padding: 0.6rem 0.7rem;
  cursor: pointer;
  color: var(--header-text);
  transition: border-color 0.2s, color 0.2s;
  line-height: 1;
}

.lang-toggle:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* --- Random Button --- */
.nav-random {
  font-family: 'Press Start 2P', 'Courier New', monospace;
  font-size: 0.9rem;
  background: transparent;
  border: 2px solid transparent;
  border-radius: 6px;
  padding: 0.6rem 0.9rem;
  cursor: pointer;
  color: var(--header-text);
  transition: border-color 0.2s, color 0.2s;
  line-height: 1;
}

.nav-random:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* --- Autoplay Button --- */
.nav-autoplay {
  font-family: 'Press Start 2P', 'Apple Color Emoji', 'Segoe UI Emoji', 'Noto Color Emoji', sans-serif;
  font-size: 0.9rem;
  background: transparent;
  border: 2px solid transparent;
  border-radius: 6px;
  padding: 0.6rem 0.9rem;
  cursor: pointer;
  color: var(--header-text);
  transition: border-color 0.2s, color 0.2s, box-shadow 0.2s;
  line-height: 1;
}

.nav-autoplay:hover {
  border-color: var(--accent-gold);
  color: var(--accent-gold);
}

.nav-autoplay.autoplay-active {
  border-color: var(--accent-gold);
  color: var(--accent-gold);
  animation: autoplayPulse 1.2s ease-in-out infinite;
}

/* --- Download Mode Button --- */
.nav-download {
  font-family: 'Press Start 2P', 'Courier New', monospace;
  font-size: 0.75rem;
  background: transparent;
  border: 2px solid transparent;
  border-radius: 6px;
  padding: 0.8rem 1.5rem;
  cursor: pointer;
  color: var(--header-text);
  transition: border-color 0.2s, color 0.2s;
  line-height: 1;
}

.nav-download:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.nav-download.download-active {
  border-color: var(--accent);
  color: var(--accent);
}

/* --- Download Button Disabled (wall mode) --- */
.nav-download.nav-disabled,
.nav-download.nav-disabled:hover {
  color: var(--text-muted);
  border-color: transparent;
  cursor: not-allowed;
  opacity: 0.45;
}

/* --- Random & Autoplay Disabled (wall mode) --- */
.nav-random.nav-disabled,
.nav-random.nav-disabled:hover,
.nav-autoplay.nav-disabled,
.nav-autoplay.nav-disabled:hover {
  color: var(--text-muted);
  border-color: transparent;
  cursor: not-allowed;
  opacity: 0.45;
}

@keyframes autoplayPulse {
  0%, 100% {
    box-shadow: 0 0 4px var(--accent-gold);
    text-shadow: 0 0 4px var(--accent-gold);
  }
  50% {
    box-shadow: 0 0 14px var(--accent-gold), 0 0 28px rgba(240, 192, 96, 0.5);
    text-shadow: 0 0 10px var(--accent-gold), 0 0 20px var(--accent-gold);
  }
}

/* Show correct icon based on theme */
[data-theme="dark"] .theme-icon-light { display: none; }
[data-theme="dark"] .theme-icon-dark { display: inline; }
:root:not([data-theme="dark"]) .theme-icon-dark,
html:not([data-theme="dark"]) .theme-icon-dark { display: none; }
:root:not([data-theme="dark"]) .theme-icon-light,
html:not([data-theme="dark"]) .theme-icon-light { display: inline; }

/* --- Lightbox --- */
.lightbox-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.75);
  z-index: 9999;
  justify-content: center;
  align-items: center;
  cursor: pointer;
}

.lightbox-overlay.active {
  display: flex;
}

.lightbox-content {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: 95vw;
  max-height: 90vh;
  cursor: default;
  background: var(--lightbox-bg);
  border: 4px solid var(--lightbox-border);
  border-radius: 8px;
  box-shadow: 8px 8px 0 var(--lightbox-shadow);
}

.lightbox-main {
  display: flex;
  gap: 0;
  flex: 1 1 auto;
  min-height: 0;
  overflow: hidden;
}

.lightbox-image-panel {
  flex: 1 1 65%;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: min(500px, 55vw);
  min-height: min(400px, 70vh);
  background: var(--lightbox-panel-bg);
  border-right: 3px solid var(--lightbox-panel-border);
}

.lightbox-image-panel img {
  display: block;
  max-width: 100%;
  max-height: 85vh;
  min-width: min(350px, 40vw);
  min-height: min(250px, 40vh);
  object-fit: contain;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  transition: opacity 0.3s ease;
}

/* Fade transition for autoplay */
.lightbox-content.fading .lightbox-image-panel img,
.lightbox-content.fading .lightbox-info-panel {
  opacity: 0;
}

.lightbox-info-panel {
  flex: 0 1 auto;
  display: flex;
  flex-direction: column;
  padding: 1.5rem;
  overflow-y: auto;
  min-width: 200px;
  max-width: 380px;
  transition: opacity 0.3s ease;
}

.lightbox-title {
  font-family: 'Press Start 2P', 'Courier New', monospace;
  font-size: 0.8rem;
  color: var(--lightbox-title);
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--lightbox-title-border);
  line-height: 1.7;
}

.lightbox-description {
  font-size: 1rem;
  color: var(--lightbox-desc);
  line-height: 1.8;
}

.lightbox-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 1rem;
  padding-top: 0.75rem;
  border-top: 2px solid var(--lightbox-title-border);
}

.lightbox-tags:empty {
  display: none;
}

.lightbox-tag {
  font-family: 'Noto Sans SC', 'Press Start 2P', 'Courier New', monospace;
  font-size: 0.75rem;
  color: var(--filter-text);
  background: var(--filter-bg);
  border: 2px solid var(--filter-border);
  border-radius: 16px;
  padding: 0.25rem 0.65rem;
  line-height: 1;
  pointer-events: none;
  user-select: none;
}

[lang="zh-CN"] .lightbox-tag {
  font-family: 'Fusion Pixel', 'Press Start 2P', monospace;
  font-size: 0.65rem;
}

.lightbox-hint {
  width: 100%;
  padding: 0.5rem 1.25rem;
  border-top: 1px solid var(--lightbox-title-border);
  font-size: 0.75rem;
  color: var(--text-muted);
  text-align: center;
  line-height: 1.6;
  background: var(--lightbox-panel-bg);
  opacity: 0.85;
}

.lightbox-close {
  position: absolute;
  top: -18px;
  right: -18px;
  width: clamp(32px, 3.5vw, 40px);
  height: clamp(32px, 3.5vw, 40px);
  background: var(--accent);
  color: var(--filter-active-text);
  border: 3px solid var(--accent-dark);
  border-radius: 6px;
  font-family: 'Press Start 2P', 'Courier New', monospace;
  font-size: clamp(0.8rem, 1.5vw, 1.1rem);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 3px 3px 0 var(--accent-dark);
  transition: transform 0.15s, box-shadow 0.15s;
  line-height: 1;
}

.lightbox-close:hover {
  transform: translate(-1px, -1px);
  box-shadow: 4px 4px 0 var(--accent-dark);
}

.lightbox-random {
  position: absolute;
  top: -18px;
  left: -18px;
  width: clamp(32px, 3.5vw, 40px);
  height: clamp(32px, 3.5vw, 40px);
  background: var(--accent);
  color: var(--filter-active-text);
  border: 3px solid var(--accent-dark);
  border-radius: 6px;
  font-family: 'Press Start 2P', 'Courier New', monospace;
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 3px 3px 0 var(--accent-dark);
  transition: transform 0.15s, box-shadow 0.15s;
  line-height: 1;
}

.lightbox-random:hover {
  transform: translate(-1px, -1px);
  box-shadow: 4px 4px 0 var(--accent-dark);
}

/* --- Lightbox Autoplay Button --- */
.lightbox-autoplay {
  position: absolute;
  top: -18px;
  left: 28px;
  width: clamp(32px, 3.5vw, 40px);
  height: clamp(32px, 3.5vw, 40px);
  background: var(--accent);
  color: var(--filter-active-text);
  border: 3px solid var(--accent-dark);
  border-radius: 6px;
  font-family: 'Press Start 2P', 'Apple Color Emoji', 'Segoe UI Emoji', 'Noto Color Emoji', sans-serif;
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 3px 3px 0 var(--accent-dark);
  transition: transform 0.15s, box-shadow 0.15s;
  line-height: 1;
}

.lightbox-autoplay:hover {
  transform: translate(-1px, -1px);
  box-shadow: 4px 4px 0 var(--accent-dark);
}

.lightbox-autoplay.autoplay-active {
  animation: autoplayPulse 1.2s ease-in-out infinite;
}

/* --- Lightbox Download Button --- */
.lightbox-download {
  position: absolute;
  top: -18px;
  left: 76px;
  width: clamp(32px, 3.5vw, 40px);
  height: clamp(32px, 3.5vw, 40px);
  background: var(--accent);
  color: var(--filter-active-text);
  border: 3px solid var(--accent-dark);
  border-radius: 6px;
  font-family: 'Press Start 2P', 'Courier New', monospace;
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 3px 3px 0 var(--accent-dark);
  transition: transform 0.15s, box-shadow 0.15s;
  line-height: 1;
}

.lightbox-download:hover {
  transform: translate(-1px, -1px);
  box-shadow: 4px 4px 0 var(--accent-dark);
}

/* --- Lightbox Copy Button --- */
.lightbox-copy {
  position: absolute;
  top: -18px;
  left: 124px;
  width: clamp(32px, 3.5vw, 40px);
  height: clamp(32px, 3.5vw, 40px);
  background: var(--accent);
  color: var(--filter-active-text);
  border: 3px solid var(--accent-dark);
  border-radius: 6px;
  font-family: 'Press Start 2P', 'Courier New', monospace;
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 3px 3px 0 var(--accent-dark);
  transition: transform 0.15s, box-shadow 0.15s;
  line-height: 1;
}

.lightbox-copy:hover {
  transform: translate(-1px, -1px);
  box-shadow: 4px 4px 0 var(--accent-dark);
}

/* --- Lightbox Compare Button --- */
.lightbox-compare {
  position: absolute;
  top: -18px;
  left: 172px;
  width: clamp(32px, 3.5vw, 40px);
  height: clamp(32px, 3.5vw, 40px);
  background: var(--accent);
  color: var(--filter-active-text);
  border: 3px solid var(--accent-dark);
  border-radius: 6px;
  font-family: 'Press Start 2P', 'Courier New', monospace;
  font-size: 0.9rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 3px 3px 0 var(--accent-dark);
  transition: transform 0.15s, box-shadow 0.15s, background 0.2s;
  line-height: 1;
}

.lightbox-compare:hover {
  transform: translate(-1px, -1px);
  box-shadow: 4px 4px 0 var(--accent-dark);
}

.lightbox-compare.compare-active {
  background: var(--accent-dark);
}

/* --- Lightbox Compare Dual-Pane Layout --- */
.lightbox-compare-panes {
  display: none;
  flex: 1 1 auto;
  min-height: 0;
  overflow: hidden;
  width: 100%;
}

.lightbox-overlay.comparing .lightbox-compare-panes {
  display: flex;
}

.lightbox-compare-left,
.lightbox-compare-right {
  flex: 1 1 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  min-width: 0;
}

.lightbox-compare-left {
  background: var(--lightbox-panel-bg);
  border-right: 2px solid var(--lightbox-panel-border);
}

.lightbox-compare-right {
  background: var(--lightbox-panel-bg);
}

.lightbox-compare-left img,
.lightbox-compare-right img {
  display: block;
  max-width: 100%;
  max-height: 70vh;
  min-width: min(300px, 40vw);
  min-height: min(250px, 40vh);
  object-fit: contain;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}

.lightbox-compare-title {
  font-family: 'Press Start 2P', 'Courier New', monospace;
  font-size: 0.65rem;
  color: var(--lightbox-title);
  margin-top: 0.75rem;
  text-align: center;
  line-height: 1.5;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.lightbox-compare-desc {
  font-size: 0.8rem;
  color: var(--lightbox-desc);
  margin-top: 0.5rem;
  text-align: center;
  line-height: 1.6;
  max-width: 100%;
  max-height: 4.8em;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  opacity: 0.85;
}

/* Compare-mode hint bar */
.lightbox-compare-hint {
  width: 100%;
  padding: 0.5rem 1.25rem;
  border-top: 1px solid var(--lightbox-title-border);
  font-size: 0.75rem;
  color: var(--text-muted);
  text-align: center;
  line-height: 1.6;
  background: var(--lightbox-panel-bg);
  opacity: 0.85;
  display: none;
}

.lightbox-overlay.comparing .lightbox-compare-hint {
  display: block;
}

/* --- Wall Gallery — Brick-wall Masonry Layout --- */
.wall-gallery {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 4px;
  padding: 0.5rem 0 3rem;
}

.wall-item {
  cursor: pointer;
  line-height: 0;
  position: relative;
  transition: transform 0.15s ease, filter 0.15s ease;
  display: flex;
  align-items: flex-end;
  justify-content: center;
}

.wall-item:hover {
  transform: scale(1.02);
  z-index: 1;
}

.wall-item:hover .wall-img {
  filter: brightness(1.1);
}

.wall-img {
  width: auto;
  max-width: 100%;
  height: auto;
  display: block;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  border-radius: 2px;
  transition: filter 0.15s ease;
  background: var(--art-image-bg);
}

/* Wall lazy load fade-in */
.wall-img.lazy-img {
  opacity: 0;
  transition: opacity 0.5s ease;
}

.wall-img.lazy-img.loaded {
  opacity: 1;
}

/* Wall responsive */
@media (max-width: 1024px) {
  .wall-gallery {
    grid-template-columns: repeat(6, 1fr);
  }
}

@media (max-width: 768px) {
  .wall-gallery {
    grid-template-columns: repeat(5, 1fr);
  }
}

@media (max-width: 640px) {
  .wall-gallery {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (max-width: 480px) {
  .wall-gallery {
    grid-template-columns: repeat(4, 1fr);
    gap: 2px;
  }
}

@media (max-width: 768px) {
  .lightbox-compare-panes {
    flex-direction: column;
  }
  .lightbox-compare-left {
    border-right: none;
    border-bottom: 2px solid var(--lightbox-panel-border);
  }
  .lightbox-compare-left img,
  .lightbox-compare-right img {
    max-height: 40vh;
    min-width: min(200px, 30vw);
    min-height: min(180px, 25vh);
  }
  .lightbox-compare-title {
    font-size: 0.55rem;
  }
  .lightbox-compare-desc {
    font-size: 0.7rem;
    max-height: 3.2em;
    -webkit-line-clamp: 2;
  }
}

/* --- Back to Top Button --- */
.back-to-top {
  position: fixed;
  bottom: calc(2rem + env(safe-area-inset-bottom, 0px));
  right: calc(2rem + env(safe-area-inset-right, 0px));
  width: clamp(36px, 4vw, 48px);
  height: clamp(36px, 4vw, 48px);
  background: var(--btn-bg);
  color: var(--btn-text);
  border: 3px solid var(--btn-border);
  border-radius: 6px;
  font-size: 1.4rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 4px 4px 0 var(--btn-shadow);
  z-index: 999;
  opacity: 0;
  transform: translateY(20px);
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s ease;
  font-family: 'Press Start 2P', 'Courier New', monospace;
}

.back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.back-to-top:hover {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--btn-shadow);
}

.back-to-top.visible:hover {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--btn-shadow);
}

/* --- Main --- */
.site-main {
  flex: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
  width: 100%;
}

/* --- Hero --- */
.hero {
  text-align: center;
  padding: 3rem 1rem 2rem;
}

.hero h1 {
  font-family: 'Press Start 2P', 'Courier New', monospace;
  font-size: 1.5rem;
  color: var(--text-heading);
  margin-bottom: 0.75rem;
  line-height: 1.8;
}

.subtitle {
  font-size: 1.1rem;
  color: var(--hero-subtitle);
  font-weight: 300;
}

.ai-label {
  font-family: 'Press Start 2P', monospace;
  font-size: 0.8rem;
  color: var(--hero-subtitle);
  opacity: 0.7;
  margin-top: 0.3rem;
}

/* --- Filter Bar --- */
.filter-bar {
  display: flex;
  justify-content: center;
  gap: 1rem;
  padding: 0 1rem 1.5rem;
  flex-wrap: wrap;
}

.filter-btn {
  font-family: 'Press Start 2P', 'Courier New', monospace;
  font-size: clamp(0.7rem, 1.2vw, 0.9rem);
  color: var(--filter-text);
  background: var(--filter-bg);
  border: 3px solid var(--filter-border);
  border-radius: 6px;
  padding: 0.8rem 1.5rem;
  cursor: pointer;
  box-shadow: 3px 3px 0 var(--filter-shadow);
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.2s, color 0.2s;
}

.filter-btn:hover {
  transform: translate(-1px, -1px);
  box-shadow: 4px 4px 0 var(--filter-shadow);
}

.filter-btn.active {
  background: var(--filter-active-bg);
  color: var(--filter-active-text);
  border-color: var(--filter-active-border);
  box-shadow: 3px 3px 0 var(--filter-active-shadow);
}

.filter-btn.active:hover {
  box-shadow: 4px 4px 0 var(--filter-active-shadow);
}

/* --- Search Input --- */
.search-wrapper {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.search-input {
  font-family: 'Press Start 2P', 'Courier New', monospace;
  font-size: clamp(0.55rem, 0.9vw, 0.65rem);
  color: var(--filter-text);
  background: var(--filter-bg);
  border: 3px solid var(--filter-border);
  border-radius: 20px;
  padding: 0.6rem 2.2rem 0.6rem 1.2rem;
  outline: none;
  min-width: 180px;
  transition: border-color 0.2s, box-shadow 0.2s;
  box-shadow: 3px 3px 0 var(--filter-shadow);
}

.search-input:focus {
  border-color: var(--accent);
  box-shadow: 3px 3px 0 var(--accent);
}

.search-input::placeholder {
  color: var(--text-muted);
  font-family: 'Noto Sans SC', sans-serif;
  font-size: 0.8rem;
}

.search-clear {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 0.8rem;
  cursor: pointer;
  padding: 2px 4px;
  line-height: 1;
  display: none;
}

.search-input:not(:placeholder-shown) ~ .search-clear,
.search-input:focus ~ .search-clear {
  display: block;
}

.search-clear:hover {
  color: var(--accent);
}

/* --- Tag Bar — multi-dimensional attribute filters --- */
.tag-bars {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  padding: 0 1rem 1.5rem;
  justify-content: center;
  align-items: flex-start;
}

.tag-bar {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  flex-wrap: wrap;
  width: 100%;
}

.tag-label {
  font-family: 'Press Start 2P', 'Courier New', monospace;
  font-size: clamp(0.5rem, 0.8vw, 0.6rem);
  color: var(--text-heading);
  white-space: nowrap;
  padding-top: 0.35rem;
  min-width: 60px;
}

.tag-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.tag-chip {
  font-family: 'Noto Sans SC', 'Press Start 2P', 'Courier New', monospace;
  font-size: clamp(0.55rem, 1vw, 0.75rem);
  color: var(--filter-text);
  background: var(--filter-bg);
  border: 2px solid var(--filter-border);
  border-radius: 16px;
  padding: 0.3rem 0.7rem;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, border-color 0.2s, transform 0.1s;
  line-height: 1;
}

.tag-chip:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: scale(1.05);
}

.tag-chip.active {
  background: var(--filter-active-bg);
  color: var(--filter-active-text);
  border-color: var(--filter-active-border);
}

.tag-chip.disabled {
  opacity: 0.35;
  color: #999;
  cursor: not-allowed;
  pointer-events: none;
}

/* Tag reset button — small, subtle, clears color/pose selections */
.tag-reset {
  font-family: 'Noto Sans SC', 'Press Start 2P', 'Courier New', monospace;
  font-size: 0.7rem;
  color: var(--filter-text);
  background: transparent;
  border: 1px dashed var(--filter-border);
  border-radius: 12px;
  padding: 0.2rem 0.6rem;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s;
  line-height: 1;
  opacity: 0.6;
  align-self: flex-start;
}

.tag-reset:hover {
  color: var(--accent);
  border-color: var(--accent);
  opacity: 1;
}

/* Chinese mode tag chips — use fusion pixel font */
[lang="zh-CN"] .tag-chip {
  font-family: 'Fusion Pixel', 'Press Start 2P', monospace;
  font-size: 0.7rem;
}

/* --- Gallery Grid --- */
.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 2rem;
  padding: 1rem 0 3rem;
}

/* --- Art Card --- */
.art-card {
  background: var(--card-bg);
  border: 3px solid var(--card-border);
  border-radius: 8px;
  overflow: hidden;
  box-shadow:
    4px 4px 0 var(--card-shadow),
    6px 6px 0 var(--card-shadow-ambient);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.art-card:hover {
  transform: translateY(-4px);
  box-shadow:
    4px 8px 0 var(--card-hover-shadow),
    8px 12px 0 var(--card-hover-ambient);
}

/* Hover preview: image zoom */
.art-image img {
  transition: transform 0.35s ease;
}

.art-card:hover .art-image img {
  transform: scale(1.12);
}

/* Hover metadata tags overlay */
.art-card-hover-tags {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  padding: 0.5rem 0.65rem;
  background: linear-gradient(transparent, rgba(0,0,0,0.5));
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  pointer-events: none;
  z-index: 2;
}

.art-card:hover .art-card-hover-tags {
  opacity: 1;
  visibility: visible;
}

.art-card-hover-tag {
  font-family: 'Noto Sans SC', 'Press Start 2P', 'Courier New', monospace;
  font-size: 0.7rem;
  color: #fff;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: 12px;
  padding: 0.15rem 0.5rem;
  line-height: 1.3;
  pointer-events: none;
  user-select: none;
}

[lang="zh-CN"] .art-card-hover-tag {
  font-family: 'Fusion Pixel', 'Press Start 2P', monospace;
  font-size: 0.6rem;
}

.art-image {
  width: 100%;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  background: var(--art-image-bg);
  border-bottom: 3px solid var(--art-image-border);
  position: relative;
}

/* --- Lazy Load Fade-in --- */
.lazy-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  image-rendering: pixelated;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.5s ease;
}

.lazy-img.loaded {
  opacity: 1;
}

/* Keep the old selector compatible */
.art-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  image-rendering: pixelated;
  cursor: pointer;
}

.art-info {
  padding: 1rem 1.25rem;
}

.art-info h3 {
  font-family: 'Press Start 2P', 'Courier New', monospace;
  font-size: 0.7rem;
  color: var(--text-heading);
  margin-bottom: 0.4rem;
  line-height: 1.6;
}

.art-info p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* Card description truncation — 2-line clamp */
.desc-clamp {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* --- 404 Page --- */
.error-page {
  text-align: center;
  padding: 5rem 1rem;
}

.error-code {
  font-family: 'Press Start 2P', 'Courier New', monospace;
  font-size: 5rem;
  color: var(--accent);
  margin-bottom: 1rem;
  text-shadow: 6px 6px 0 var(--card-shadow);
}

.error-page h1 {
  font-family: 'Press Start 2P', 'Courier New', monospace;
  font-size: 1.2rem;
  color: var(--text-heading);
  margin-bottom: 1rem;
  line-height: 1.8;
}

.error-page p {
  color: var(--text-muted);
  margin-bottom: 2rem;
  font-size: 1rem;
}

.btn-home {
  display: inline-block;
  font-family: 'Press Start 2P', 'Courier New', monospace;
  font-size: 0.65rem;
  color: var(--btn-text);
  background: var(--btn-bg);
  padding: 0.75rem 1.5rem;
  text-decoration: none;
  border: 3px solid var(--btn-border);
  box-shadow: 4px 4px 0 var(--btn-shadow);
  transition: transform 0.15s, box-shadow 0.15s;
}

.btn-home:hover {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--btn-shadow);
}

/* --- Maintenance Page --- */
.maintenance-page {
  text-align: center;
  padding: 5rem 1rem;
}

.maintenance-icon {
  font-size: 4rem;
  margin-bottom: 1.5rem;
}

.maintenance-page h1 {
  font-family: 'Press Start 2P', 'Courier New', monospace;
  font-size: 1.3rem;
  color: var(--text-heading);
  margin-bottom: 1rem;
  line-height: 1.8;
}

.maintenance-page p {
  color: var(--text-muted);
  margin-bottom: 2rem;
  font-size: 1rem;
}

/* Maintenance dots animation */
.maintenance-dots {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
}

.maintenance-dots .dot {
  width: 12px;
  height: 12px;
  background: var(--maintenance-dot-bg);
  border: 2px solid var(--maintenance-dot-border);
  animation: dotBounce 1.4s infinite ease-in-out both;
}

.maintenance-dots .dot:nth-child(1) {
  animation-delay: -0.32s;
}

.maintenance-dots .dot:nth-child(2) {
  animation-delay: -0.16s;
}

.maintenance-dots .dot:nth-child(3) {
  animation-delay: 0s;
}

@keyframes dotBounce {
  0%, 80%, 100% {
    transform: scale(0.8);
    opacity: 0.6;
  }
  40% {
    transform: scale(1.3);
    opacity: 1;
  }
}

/* --- Footer --- */
.site-footer {
  background: var(--footer-bg);
  text-align: center;
  padding: 1.5rem 1rem;
  color: var(--footer-text);
  font-size: 0.8rem;
  border-top: 4px solid var(--footer-border);
}

.site-footer p {
  margin-bottom: 0.3rem;
}

.visitor-counter {
  font-family: 'Press Start 2P', 'Courier New', monospace;
  font-size: 0.65rem;
  color: var(--accent-gold);
  margin-bottom: 0.5rem;
}

.icp-info a {
  color: var(--footer-link);
  text-decoration: none;
  font-size: 0.75rem;
}

.icp-info a:hover {
  text-decoration: underline;
}

/* --- Download Page — Checkbox Overlay --- */
.download-card {
  cursor: pointer;
  position: relative;
}

.download-card .art-image {
  position: relative;
}

.download-checkbox {
  position: absolute;
  top: 8px;
  right: 8px;
  width: clamp(26px, 3vw, 32px);
  height: clamp(26px, 3vw, 32px);
  background: rgba(0, 0, 0, 0.45);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  transition: background 0.2s;
}

.download-checkbox .checkbox-icon,
.download-checkbox .checkbox-icon-checked {
  font-size: 1.2rem;
  color: #fff;
}

.download-checkbox .checkbox-icon-checked {
  display: none;
}

/* Selected state */
.download-card.selected {
  border-color: var(--accent);
  box-shadow:
    4px 4px 0 var(--accent),
    0 0 12px rgba(224, 122, 95, 0.3);
}

[data-theme="dark"] .download-card.selected {
  border-color: var(--accent-gold);
  box-shadow:
    4px 4px 0 var(--accent-gold),
    0 0 16px rgba(240, 192, 96, 0.35);
}

.download-card.selected .download-checkbox {
  background: var(--accent);
}

[data-theme="dark"] .download-card.selected .download-checkbox {
  background: var(--accent-gold);
  color: var(--filter-active-text);
}

.download-card.selected .download-checkbox .checkbox-icon {
  display: none;
}

.download-card.selected .download-checkbox .checkbox-icon-checked {
  display: inline;
}

/* --- Gallery Page Overlay: hide checkboxes by default, show in download mode --- */
.art-card:not(.download-card) .download-checkbox {
  display: none;
}

.download-mode .art-card .download-checkbox {
  display: flex;
}

/* --- Gallery Card Selected State (download overlay) --- */
.art-card.selected {
  border-color: var(--accent);
  box-shadow:
    4px 4px 0 var(--accent),
    0 0 12px rgba(224, 122, 95, 0.3);
}

[data-theme="dark"] .art-card.selected {
  border-color: var(--accent-gold);
  box-shadow:
    4px 4px 0 var(--accent-gold),
    0 0 16px rgba(240, 192, 96, 0.35);
}

.art-card.selected .download-checkbox {
  background: var(--accent);
}

[data-theme="dark"] .art-card.selected .download-checkbox {
  background: var(--accent-gold);
  color: var(--filter-active-text);
}

.art-card.selected .download-checkbox .checkbox-icon {
  display: none;
}

.art-card.selected .download-checkbox .checkbox-icon-checked {
  display: inline;
}

/* --- Favorites Button --- */
.fav-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  width: clamp(26px, 3vw, 32px);
  height: clamp(26px, 3vw, 32px);
  background: rgba(0, 0, 0, 0.45);
  border: none;
  border-radius: 4px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.2rem;
  line-height: 1;
  transition: background 0.2s, transform 0.15s;
  z-index: 5;
}

.fav-btn:hover {
  background: rgba(0, 0, 0, 0.6);
  transform: scale(1.1);
}

.fav-btn.favorited {
  background: var(--accent);
  color: #fff;
}

[data-theme="dark"] .fav-btn.favorited {
  background: var(--accent-gold);
  color: var(--filter-active-text);
}

/* Hide fav button on wall items by default (wall has its own placement) */
.wall-item .fav-btn {
  position: absolute;
  top: 4px;
  right: 4px;
  width: clamp(22px, 2.5vw, 28px);
  height: clamp(22px, 2.5vw, 28px);
  font-size: 1rem;
}

/* In download mode, shift fav button left to avoid overlap with checkbox */
.download-mode .art-card .fav-btn {
  right: clamp(36px, 4vw, 44px);
}

/* Lightbox info panel favorites button */
.lightbox-fav {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  margin-top: 1rem;
  padding: 0.4rem 0.8rem;
  font-family: 'Noto Sans SC', 'Press Start 2P', 'Courier New', monospace;
  font-size: 0.8rem;
  color: var(--filter-text);
  background: var(--filter-bg);
  border: 2px solid var(--filter-border);
  border-radius: 16px;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
  line-height: 1;
  user-select: none;
}

.lightbox-fav:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.lightbox-fav.favorited {
  background: var(--accent);
  color: var(--filter-active-text);
  border-color: var(--accent-dark);
}

[data-theme="dark"] .lightbox-fav.favorited {
  background: var(--accent-gold);
  color: var(--filter-active-text);
  border-color: var(--accent-dark);
}

[lang="zh-CN"] .lightbox-fav {
  font-family: 'Fusion Pixel', 'Press Start 2P', monospace;
  font-size: 0.65rem;
}

/* --- Bottom Download Bar --- */
.download-bar {
  position: sticky;
  bottom: 0;
  background: var(--card-bg);
  border-top: 3px solid var(--card-border);
  padding: 0;
  z-index: 50;
}

.download-bar-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.download-count {
  font-family: 'Press Start 2P', 'Courier New', monospace;
  font-size: 0.7rem;
  color: var(--text-color);
}

.download-count strong {
  color: var(--accent);
  font-size: 0.9rem;
}

[data-theme="dark"] .download-count strong {
  color: var(--accent-gold);
}

.download-bar-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.download-bar-btn {
  font-family: 'Press Start 2P', 'Courier New', monospace;
  font-size: 0.6rem;
  color: var(--filter-text);
  background: var(--filter-bg);
  border: 3px solid var(--filter-border);
  border-radius: 6px;
  padding: 0.6rem 1rem;
  cursor: pointer;
  box-shadow: 3px 3px 0 var(--filter-shadow);
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.2s, color 0.2s;
}

.download-bar-btn:hover {
  transform: translate(-1px, -1px);
  box-shadow: 4px 4px 0 var(--filter-shadow);
}

.download-bar-clear {
  font-size: 0.55rem;
}

.download-bar-primary {
  background: var(--accent);
  color: var(--filter-active-text);
  border-color: var(--accent-dark);
  box-shadow: 3px 3px 0 var(--accent-dark);
}

.download-bar-primary:hover {
  box-shadow: 4px 4px 0 var(--accent-dark);
}

/* Cancel/Back button — muted, neutral style */
.download-bar-back {
  background: transparent;
  color: var(--text-muted);
  border-color: var(--text-muted);
  box-shadow: 3px 3px 0 var(--card-shadow);
  text-decoration: none;
}

.download-bar-back:hover {
  color: var(--text-color);
  border-color: var(--text-color);
  box-shadow: 4px 4px 0 var(--card-shadow);
}

[data-theme="dark"] .download-bar-primary {
  background: var(--accent-gold);
  color: var(--filter-active-text);
  border-color: var(--accent-dark);
  box-shadow: 3px 3px 0 var(--accent-dark);
}

/* --- Copy Toast --- */
.copy-toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--accent);
  color: var(--filter-active-text);
  font-family: 'Press Start 2P', 'Courier New', monospace;
  font-size: 0.7rem;
  padding: 0.75rem 1.5rem;
  border: 3px solid var(--accent-dark);
  border-radius: 6px;
  box-shadow: 4px 4px 0 var(--accent-dark);
  z-index: 99999;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.copy-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* --- Speed Selector --- */
.speed-selector {
  display: inline-flex;
  align-items: center;
  gap: 0;
}

.speed-opt {
  cursor: pointer;
  padding: 0 2px;
  transition: color 0.2s;
  color: var(--text-muted);
}

.speed-opt:hover {
  color: var(--accent);
}

.speed-opt.active {
  color: var(--accent);
  font-weight: bold;
}

.speed-sep {
  color: var(--text-muted);
  opacity: 0.5;
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 1.1rem;
  }

  /* Header nav: allow wrapping, reduce sizing */
  .header-inner {
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  .site-nav {
    flex-wrap: wrap;
    gap: 0.3rem;
    justify-content: center;
    width: 100%;
  }

  .site-nav a,
  .nav-download {
    font-size: 0.55rem;
    padding: 0.5rem 0.7rem;
  }

  .lang-toggle {
    font-size: 0.5rem;
    padding: 0.5rem 0.5rem;
  }

  .theme-toggle,
  .nav-random,
  .nav-autoplay {
    font-size: 0.7rem;
    padding: 0.5rem 0.6rem;
  }

  .logo-text {
    font-size: 0.65rem;
  }

  .filter-btn {
    font-size: 0.6rem;
    padding: 0.6rem 1rem;
  }

  /* Filter bar: tighter wrapping */
  .filter-bar {
    gap: 0.5rem;
    padding: 0 0.5rem 1rem;
  }

  /* Search: reduce min-width on mobile */
  .search-input {
    min-width: 140px;
    font-size: 0.55rem;
    padding: 0.5rem 2rem 0.5rem 0.8rem;
  }

  .search-input::placeholder {
    font-size: 0.7rem;
  }

  .tag-label {
    font-size: 0.5rem;
    min-width: 50px;
  }

  .tag-chip {
    font-size: 0.7rem;
    padding: 0.25rem 0.5rem;
  }

  [lang="zh-CN"] .tag-chip {
    font-size: 0.6rem;
  }

  .gallery {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1.25rem;
  }

  .art-info h3 {
    font-size: 0.6rem;
  }

  .error-code {
    font-size: 3rem;
  }

  /* Lightbox: stack vertically on mobile */
  .lightbox-content {
    max-width: 94vw;
    max-height: 90vh;
  }

  .lightbox-main {
    flex-direction: column;
  }

  .lightbox-image-panel {
    flex: 0 0 auto;
    min-width: unset;
    min-height: min(180px, 35vh);
    border-right: none;
    border-bottom: 3px solid var(--lightbox-panel-border);
  }

  .lightbox-image-panel img {
    min-width: unset;
    min-height: unset;
    max-height: 45vh;
  }

  .lightbox-info-panel {
    flex: 0 0 auto;
    min-width: unset;
    max-width: none;
    max-height: 35vh;
    overflow-y: auto;
    padding: 1rem;
  }

  .lightbox-title {
    font-size: 0.65rem;
  }

  .lightbox-description {
    font-size: 0.85rem;
  }

  /* Lightbox: reposition top control buttons into a compact row */
  .lightbox-close {
    top: 6px;
    right: 6px;
    width: 36px;
    height: 36px;
    font-size: 1rem;
    border-radius: 50%;
  }

  .lightbox-random,
  .lightbox-autoplay,
  .lightbox-download,
  .lightbox-copy,
  .lightbox-compare {
    top: auto;
    bottom: 6px;
    width: 34px;
    height: 34px;
    font-size: 0.9rem;
  }

  /* Spread toolbar buttons evenly along the bottom */
  .lightbox-random { left: 6px; }
  .lightbox-autoplay { left: 44px; }
  .lightbox-download { left: 82px; }
  .lightbox-copy { left: 120px; }
  .lightbox-compare { left: 158px; }

  /* Make room for bottom toolbar buttons */
  .lightbox-content {
    padding-bottom: 44px;
  }

  .lightbox-hint {
    font-size: 0.6rem;
    padding: 0.4rem 0.75rem;
  }

  /* Download bar: compact on mobile */
  .download-bar-inner {
    padding: 0.6rem 1rem;
  }

  .download-bar-btn {
    font-size: 0.5rem;
    padding: 0.5rem 0.7rem;
  }

  .download-count {
    font-size: 0.55rem;
  }

  /* Back to top: smaller, closer to edge */
  .back-to-top {
    bottom: calc(1.25rem + env(safe-area-inset-bottom, 0px));
    right: calc(0.75rem + env(safe-area-inset-right, 0px));
    width: 40px;
    height: 40px;
  }
}

/* Tablet / large phone tweaks */
@media (max-width: 640px) {
  .gallery {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 1rem;
  }

  .hero h1 {
    font-size: 1rem;
  }

  .filter-btn {
    font-size: 0.55rem;
    padding: 0.5rem 0.8rem;
  }

  .site-nav a,
  .nav-download {
    font-size: 0.5rem;
    padding: 0.4rem 0.5rem;
  }
}

@media (max-width: 480px) {
  .gallery {
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
  }

  .header-inner {
    padding: 0.4rem 0.5rem;
  }

  .site-nav {
    gap: 0.2rem;
  }

  .site-nav a,
  .nav-download {
    font-size: 0.45rem;
    padding: 0.4rem 0.45rem;
  }

  .hero {
    padding: 1.5rem 0.5rem 1rem;
  }

  .hero h1 {
    font-size: 0.85rem;
  }

  .ai-label {
    font-size: 0.6rem;
  }

  /* Filter bar: stack tighter */
  .filter-bar {
    gap: 0.35rem;
    padding: 0 0.25rem 1rem;
  }

  .filter-btn {
    font-size: 0.5rem;
    padding: 0.45rem 0.6rem;
  }

  .search-input {
    min-width: 120px;
    font-size: 0.5rem;
  }

  /* Search full-width on mobile */
  .search-wrapper {
    width: 100%;
    display: flex;
  }
  .search-wrapper .search-input {
    width: 100%;
    min-width: 0;
  }

  .search-input::placeholder {
    font-size: 0.65rem;
  }

  /* Lightbox: even tighter on small phones */
  .lightbox-content {
    max-width: 98vw;
    max-height: 95vh;
    padding-bottom: 40px;
  }

  .lightbox-main {
    flex-direction: column;
  }

  .lightbox-image-panel {
    flex: 0 0 auto;
    min-height: min(150px, 30vh);
  }

  .lightbox-image-panel img {
    max-height: 40vh;
  }

  .lightbox-info-panel {
    flex: 0 0 auto;
    min-width: unset;
    max-height: 40vh;
    padding: 0.75rem;
  }

  .lightbox-title {
    font-size: 0.55rem;
    margin-bottom: 0.5rem;
    padding-bottom: 0.5rem;
  }

  .lightbox-description {
    font-size: 0.8rem;
    line-height: 1.5;
  }

  /* Lightbox toolbar: even tighter */
  .lightbox-close {
    width: 34px;
    height: 34px;
    font-size: 0.9rem;
  }

  .lightbox-random,
  .lightbox-autoplay,
  .lightbox-download,
  .lightbox-copy,
  .lightbox-compare {
    width: 30px;
    height: 30px;
    font-size: 0.8rem;
  }

  .lightbox-random { left: 4px; }
  .lightbox-autoplay { left: 38px; }
  .lightbox-download { left: 72px; }
  .lightbox-copy { left: 106px; }
  .lightbox-compare { left: 140px; }

  .lightbox-hint {
    font-size: 0.55rem;
    padding: 0.3rem 0.5rem;
  }

  .lightbox-tag {
    font-size: 0.65rem;
    padding: 0.2rem 0.5rem;
  }

  [lang="zh-CN"] .lightbox-tag {
    font-size: 0.55rem;
  }

  .lightbox-fav {
    font-size: 0.7rem;
    padding: 0.3rem 0.6rem;
  }

  [lang="zh-CN"] .lightbox-fav {
    font-size: 0.55rem;
  }

  /* Compare mode: even more compact */
  .lightbox-compare-left img,
  .lightbox-compare-right img {
    max-height: 30vh;
  }

  .lightbox-compare-title {
    font-size: 0.5rem;
  }

  .lightbox-compare-desc {
    font-size: 0.65rem;
  }

  /* Download bar: tighter on small phone */
  .download-bar-inner {
    padding: 0.5rem 0.75rem;
    gap: 0.4rem;
  }

  .download-bar-btn {
    font-size: 0.45rem;
    padding: 0.4rem 0.5rem;
  }

  .download-count {
    font-size: 0.5rem;
  }

  /* Tag bars */
  .tag-bars {
    padding: 0 0.25rem 1rem;
  }

  .tag-label {
    font-size: 0.45rem;
    min-width: 40px;
  }

  .tag-chip {
    font-size: 0.6rem;
    padding: 0.2rem 0.4rem;
  }

  [lang="zh-CN"] .tag-chip {
    font-size: 0.5rem;
  }

  /* Art card */
  .art-info {
    padding: 0.75rem 0.75rem;
  }

  .art-info h3 {
    font-size: 0.5rem;
  }

  .art-info p {
    font-size: 0.75rem;
  }

  /* Footer */
  .site-footer {
    font-size: 0.65rem;
    padding: 1rem 0.75rem;
  }

  .back-to-top {
    bottom: calc(1rem + env(safe-area-inset-bottom, 0px));
    right: calc(0.5rem + env(safe-area-inset-right, 0px));
    width: 44px;
    height: 44px;
    font-size: 1.3rem;
  }
}

/* Very small phones (320-380px) */
@media (max-width: 380px) {
  .wall-gallery {
    grid-template-columns: repeat(3, 1fr);
    gap: 2px;
  }

  .header-inner {
    padding: 0.3rem 0.3rem;
  }

  .site-nav {
    gap: 0.15rem;
  }

  .site-nav a,
  .nav-download {
    font-size: 0.4rem;
    padding: 0.35rem 0.35rem;
  }

  .logo-text {
    font-size: 0.55rem;
  }

  .logo-icon {
    font-size: 1.2rem;
  }

  .hero h1 {
    font-size: 0.75rem;
  }

  .gallery {
    gap: 0.75rem;
  }

  /* Lightbox toolbar: extra compact */
  .lightbox-random,
  .lightbox-autoplay,
  .lightbox-download,
  .lightbox-copy,
  .lightbox-compare {
    width: 26px;
    height: 26px;
    font-size: 0.7rem;
  }

  .lightbox-random { left: 3px; bottom: 4px; }
  .lightbox-autoplay { left: 32px; bottom: 4px; }
  .lightbox-download { left: 61px; bottom: 4px; }
  .lightbox-copy { left: 90px; bottom: 4px; }
  .lightbox-compare { left: 119px; bottom: 4px; }

  .lightbox-content {
    padding-bottom: 34px;
  }

  .lightbox-close {
    width: 30px;
    height: 30px;
    font-size: 0.8rem;
  }
}

/* ============================================
   English Mode — Scale Down Press Start 2P
   ============================================ */
[lang="en"] .site-nav a,
[lang="en"] .nav-download {
  font-size: clamp(0.65rem, 1.2vw, 0.75rem);
}
[lang="en"] .logo-text {
  font-size: clamp(0.7rem, 1.5vw, 1rem);
}
[lang="en"] .hero h1 {
  font-size: clamp(0.9rem, 2.5vw, 1.5rem);
}
[lang="en"] .subtitle {
  font-size: clamp(0.7rem, 1.8vw, 1.1rem);
}
[lang="en"] .filter-btn {
  font-size: clamp(0.65rem, 1.2vw, 0.85rem);
}
[lang="en"] .art-info h3 {
  font-size: clamp(0.55rem, 1vw, 0.7rem);
}
[lang="en"] .lightbox-title {
  font-size: clamp(0.65rem, 1.2vw, 0.8rem);
}
[lang="en"] .btn-home {
  font-size: clamp(0.55rem, 1vw, 0.65rem);
}
[lang="en"] .error-page h1 {
  font-size: clamp(0.8rem, 2vw, 1.2rem);
}
[lang="en"] .error-code {
  font-size: clamp(2rem, 8vw, 5rem);
}
[lang="en"] .maintenance-page h1 {
  font-size: clamp(0.8rem, 2.2vw, 1.3rem);
}
[lang="en"] .lightbox-hint {
  font-size: clamp(0.6rem, 1vw, 0.75rem);
}
[lang="en"] .download-bar-btn {
  font-size: clamp(0.55rem, 0.9vw, 0.6rem);
}
[lang="en"] .nav-random,
[lang="en"] .nav-autoplay {
  font-size: clamp(0.65rem, 1.2vw, 0.9rem);
}

/* ============================================
   Chinese Mode — Fusion Pixel Font
   ============================================ */
/* Desktop: apply Fusion Pixel + 115% scale */
@media (min-width: 769px) {
  [lang="zh-CN"] .site-nav a,
  [lang="zh-CN"] .nav-random,
  [lang="zh-CN"] .nav-autoplay,
  [lang="zh-CN"] .nav-download,
  [lang="zh-CN"] .theme-toggle,
  [lang="zh-CN"] .logo-text,
  [lang="zh-CN"] .hero h1,
  [lang="zh-CN"] .subtitle,
  [lang="zh-CN"] .ai-label,
  [lang="zh-CN"] .filter-btn,
  [lang="zh-CN"] .art-info h3,
  [lang="zh-CN"] .lightbox-title,
  [lang="zh-CN"] .lightbox-close,
  [lang="zh-CN"] .lightbox-random,
  [lang="zh-CN"] .lightbox-download,
  [lang="zh-CN"] .lightbox-compare,
  [lang="zh-CN"] .btn-home,
  [lang="zh-CN"] .error-code,
  [lang="zh-CN"] .error-page h1,
  [lang="zh-CN"] .maintenance-page h1,
  [lang="zh-CN"] .lightbox-hint,
  [lang="zh-CN"] .download-bar-btn,
  [lang="zh-CN"] .back-to-top,
  [lang="zh-CN"] .search-input {
    font-family: 'Fusion Pixel', 'Press Start 2P', monospace;
    font-size: 115%;
  }
}

/* Mobile: apply Fusion Pixel font but keep responsive sizes */
@media (max-width: 768px) {
  [lang="zh-CN"] .site-nav a,
  [lang="zh-CN"] .nav-random,
  [lang="zh-CN"] .nav-autoplay,
  [lang="zh-CN"] .nav-download,
  [lang="zh-CN"] .theme-toggle,
  [lang="zh-CN"] .logo-text,
  [lang="zh-CN"] .hero h1,
  [lang="zh-CN"] .subtitle,
  [lang="zh-CN"] .ai-label,
  [lang="zh-CN"] .filter-btn,
  [lang="zh-CN"] .art-info h3,
  [lang="zh-CN"] .lightbox-title,
  [lang="zh-CN"] .lightbox-close,
  [lang="zh-CN"] .lightbox-random,
  [lang="zh-CN"] .lightbox-download,
  [lang="zh-CN"] .lightbox-compare,
  [lang="zh-CN"] .btn-home,
  [lang="zh-CN"] .error-code,
  [lang="zh-CN"] .error-page h1,
  [lang="zh-CN"] .maintenance-page h1,
  [lang="zh-CN"] .lightbox-hint,
  [lang="zh-CN"] .download-bar-btn,
  [lang="zh-CN"] .back-to-top,
  [lang="zh-CN"] .search-input {
    font-family: 'Fusion Pixel', 'Press Start 2P', monospace;
  }
}