@keyframes fadeUp {
  0% {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-display: swap;
  font-weight: 100 900;
  src:
    url(inter-var.woff2) format("woff2-variations"),
    url(inter-var.woff2) format("woff2");
}
:root {
  --color-bg-primary: #f6f4f0;
  --color-bg-surface: #ffffff;
  --color-bg-hover: #edeae5;
  --color-bg-surface-alt: #f0ede8;
  --color-bg-input: #f6f4f0;
  --color-bg-code: #f0ede8;
  --color-bg-tip: #f5f0e8;
  --color-text-primary: #2a2826;
  --color-text-secondary: #6a6865;
  --color-text-muted: #706e6a;
  --color-text-inverse: #f6f4f0;
  --color-border: #e2dfda;
  --color-border-focus: #b8a88a;
  --color-accent: #756452;
  --color-accent-hover: #655444;
  --color-accent-light: #ede8e2;
  --color-accent-text: #6f5f50;
  --color-shadow: rgba(42, 40, 38, 0.06);
  --color-shadow-lg: rgba(42, 40, 38, 0.12);
  --color-success: #5a7a5a;
  --color-error: #8a5a5a;
  --font-family:
    "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-size-base: 1rem;
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  --spacing-3xl: 64px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  --shadow-sm: 0 2px 8px var(--color-shadow);
  --shadow-md: 0 4px 20px var(--color-shadow);
  --shadow-lg: 0 8px 40px var(--color-shadow-lg);
  --transition-fast: 0.15s ease;
  --transition-base: 0.25s ease;
  --transition-slow: 0.4s ease;
  --max-width: 1200px;
}
[data-theme="dark"] {
  --color-bg-primary: #1a1816;
  --color-bg-surface: #242220;
  --color-bg-hover: #302d2a;
  --color-bg-surface-alt: #2a2824;
  --color-bg-input: #242220;
  --color-bg-code: #2a2824;
  --color-bg-tip: #2a2824;
  --color-text-primary: #e6e4df;
  --color-text-secondary: #aaa8a4;
  --color-text-muted: #9a9894;
  --color-text-inverse: #1a1816;
  --color-border: #3a3835;
  --color-border-focus: #b8a88a;
  --color-accent: #b8a88a;
  --color-accent-hover: #c8b89a;
  --color-accent-light: #2a2824;
  --color-accent-text: #b8a88a;
  --color-shadow: rgba(0, 0, 0, 0.3);
  --color-shadow-lg: rgba(0, 0, 0, 0.5);
  --color-success: #7a9a7a;
  --color-error: #9a7a7a;
}
*,
::after,
::before {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
[hidden] {
  display: none !important;
}
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
body {
  font-weight: var(--font-weight-regular);
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: var(--font-weight-bold);
  line-height: 1.2;
  letter-spacing: -0.02em;
}
a,
button {
  color: inherit;
}
a {
  text-decoration: none;
}
button {
  cursor: pointer;
  border: 0;
  background: 0 0;
}
body,
button,
input,
textarea {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
}
img {
  display: block;
  max-width: 100%;
  height: auto;
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}
.text-muted {
  color: var(--color-text-muted);
}
.text-secondary {
  color: var(--color-text-secondary);
}
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  width: 100%;
}
.access-box,
.detail-container,
.filter-btn,
input {
  transition:
    background-color var(--transition-base),
    color var(--transition-base),
    border-color var(--transition-base),
    box-shadow var(--transition-base);
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: 12px 28px;
  border-radius: var(--radius-full);
  font-weight: var(--font-weight-semibold);
  font-size: 0.95rem;
  transition: all var(--transition-base);
  border: 2px solid transparent;
  line-height: 1.2;
  min-height: 52px;
  position: relative;
  white-space: nowrap;
}
.btn-primary {
  background-color: var(--color-accent);
  color: var(--color-text-inverse);
  border-color: var(--color-accent);
}
.btn-primary:focus-visible,
.btn-primary:hover {
  background-color: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px var(--color-shadow-lg);
}
.btn-primary:active {
  transform: translateY(0);
}
.btn-outline {
  background-color: transparent;
  color: var(--color-text-primary);
  border-color: var(--color-border);
}
.btn-outline:focus-visible,
.btn-outline:hover {
  background-color: var(--color-bg-hover);
  border-color: var(--color-border);
}
.btn-sm {
  padding: 8px 18px;
  font-size: 0.85rem;
  min-height: 40px;
}
.btn-block {
  width: 100%;
  justify-content: center;
}
.btn:disabled {
  opacity: 0.5;
  pointer-events: none;
  transform: none !important;
}
.feature-card,
.prompt-card {
  background-color: var(--color-bg-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: all var(--transition-base);
  contain: layout paint;
  display: flex;
  flex-direction: column;
  height: 100%;
}
.prompt-card:not(.skeleton) {
  cursor: pointer;
}
.feature-card:hover,
.prompt-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.img-pair,
.img-pair > div {
  position: relative;
  overflow: hidden;
  background-color: var(--color-bg-surface-alt);
}
.img-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  aspect-ratio: 8/5;
}
.img-pair > div {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.4rem;
  font-weight: var(--font-weight-medium);
  color: var(--color-text-muted);
  min-height: 80px;
  filter: none;
}
.img-pair .before {
  border-right: 2px solid var(--color-border);
}
.img-pair .after {
  background-color: var(--color-accent-light);
}
.card-body h3,
.img-pair .label {
  font-weight: var(--font-weight-semibold);
}
.img-pair .label {
  position: absolute;
  bottom: var(--spacing-sm);
  left: var(--spacing-sm);
  background-color: rgba(26, 24, 22, 0.65);
  color: #f6f4f0;
  padding: 1px 10px;
  border-radius: var(--radius-full);
  font-size: 0.6rem;
  letter-spacing: 0.03em;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  filter: none;
}
.card-body {
  padding: var(--spacing-lg) var(--spacing-lg) var(--spacing-lg);
  flex: 1;
  display: flex;
  flex-direction: column;
}
.card-body .category-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background-color: var(--color-accent-light);
  padding: 2px 12px;
  border-radius: var(--radius-full);
  align-self: flex-start;
  margin-bottom: var(--spacing-sm);
}
.card-body h3 {
  font-size: 1.05rem;
  margin-bottom: var(--spacing-xs);
}
.card-body .category-tag,
.card-body h3:hover,
.hero h1 span {
  color: var(--color-accent-text);
}
.prompt-title-link {
  display: inline-block;
}
.access-box p,
.card-body p {
  color: var(--color-text-secondary);
}
.card-body p {
  font-size: 0.9rem;
  flex: 1;
  margin-bottom: var(--spacing-md);
}
.card-body .card-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-sm);
  margin-top: auto;
}
.card-body .card-actions .btn {
  flex: 1;
  min-height: 40px;
  padding: 8px 16px;
  font-size: 0.85rem;
}
.access-box {
  max-width: 480px;
  margin: 0 auto;
  background-color: var(--color-bg-surface);
  border-radius: var(--radius-lg);
  padding: var(--spacing-2xl) var(--spacing-xl);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
  text-align: center;
}
.access-box h1 {
  font-size: 1.8rem;
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-sm);
}
.access-box p {
  margin-bottom: var(--spacing-lg);
}
.access-box .input-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}
.access-box input {
  padding: 14px 18px;
  border-radius: var(--radius-full);
  border: 2px solid var(--color-border);
  font-size: var(--font-size-base);
  font-family: var(--font-family);
  background-color: var(--color-bg-input);
  color: var(--color-text-primary);
  transition: all var(--transition-base);
  outline: 0;
  width: 100%;
}
.access-box input:focus,
.library-controls .search-wrap input:focus {
  border-color: var(--color-border-focus);
  box-shadow: 0 0 0 4px var(--color-accent-light);
}
.access-box .status-msg,
.access-box .error-msg,
.access-box .success-msg {
  font-size: 0.9rem;
  margin-top: var(--spacing-sm);
  font-weight: var(--font-weight-medium);
  min-height: 28px;
}
.access-box .error-msg {
  color: var(--color-error);
}
.access-box .success-msg {
  color: var(--color-success);
}
.access-footer {
  margin-top: var(--spacing-lg);
  font-size: 0.85rem;
  color: var(--color-text-muted);
}
.access-link {
  color: var(--color-accent-text);
  font-weight: var(--font-weight-medium);
}
.access-link:hover {
  text-decoration: underline;
}
.library-controls {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  flex: 1 1 100%;
}
.library-controls .search-wrap {
  flex: 1 1 240px;
  position: relative;
}
.detail-content .prompt-box pre,
.library-controls .search-wrap input {
  font-family: var(--font-family);
  font-size: 0.95rem;
  color: var(--color-text-primary);
}
.library-controls .search-wrap input {
  width: 100%;
  padding: 12px 18px 12px 44px;
  border-radius: var(--radius-full);
  border: 2px solid var(--color-border);
  background-color: var(--color-bg-surface);
  transition: all var(--transition-base);
  outline: 0;
}
.library-controls .search-wrap .search-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
  font-size: 1.1rem;
  pointer-events: none;
}
.library-controls .filter-wrap {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}
.detail-back,
.library-controls .filter-wrap .filter-btn {
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-medium);
}
.library-controls .filter-wrap .filter-btn {
  padding: 8px 18px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  border: 2px solid var(--color-border);
  background-color: var(--color-bg-surface);
  transition: all var(--transition-base);
}
.library-controls .filter-wrap .filter-btn:hover {
  background-color: var(--color-bg-hover);
}
.library-controls .filter-wrap .filter-btn.active {
  background-color: var(--color-accent);
  color: var(--color-text-inverse);
  border-color: var(--color-accent);
}
.detail-back {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
  transition: color var(--transition-base);
  padding: var(--spacing-sm) 0;
}
.detail-back:hover {
  color: var(--color-text-primary);
}
.detail-container {
  background-color: var(--color-bg-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
}
.detail-images,
.detail-images > div {
  background-color: var(--color-bg-surface-alt);
}
.detail-images {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
}
.detail-images > div {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3.6rem;
  font-weight: var(--font-weight-medium);
  color: var(--color-text-muted);
  position: relative;
  overflow: hidden;
  min-height: 120px;
  filter: none;
  aspect-ratio: 4/5;
}
.detail-images .before {
  border-right: 2px solid var(--color-border);
}
.detail-images .after {
  background-color: var(--color-accent-light);
}
.detail-images .label {
  position: absolute;
  bottom: var(--spacing-md);
  left: var(--spacing-md);
  background-color: rgba(26, 24, 22, 0.65);
  color: #f6f4f0;
  padding: 4px 14px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.03em;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  filter: none !important;
}
.detail-content {
  padding: var(--spacing-xl) var(--spacing-xl);
}
.detail-content .category-tag,
.detail-content .prompt-box .prompt-label {
  font-size: 0.7rem;
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: var(--spacing-sm);
}
.detail-content .category-tag {
  display: inline-block;
  color: var(--color-accent-text);
  background-color: var(--color-accent-light);
  padding: 2px 14px;
  border-radius: var(--radius-full);
}
.detail-content .detail-category-btn:hover {
  background-color: var(--color-bg-hover);
}
.detail-content h2 {
  font-size: 1.8rem;
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-xs);
}
.detail-content .detail-desc,
.empty-state h3 {
  color: var(--color-text-secondary);
  font-size: 1.05rem;
  margin-bottom: var(--spacing-lg);
}
.detail-content .prompt-box {
  background-color: var(--color-bg-code);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg) var(--spacing-lg);
  border: 1px solid var(--color-border);
  margin-bottom: var(--spacing-md);
}
.detail-content .prompt-box .prompt-label {
  color: var(--color-text-muted);
}
.detail-content .prompt-box pre {
  white-space: pre-wrap;
  word-break: break-word;
  line-height: 1.7;
}
.detail-content .copy-wrap {
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
  flex-wrap: wrap;
}
.detail-content .copy-wrap .btn {
  min-height: 44px;
}
.detail-content .copy-feedback {
  font-size: 0.9rem;
  color: var(--color-success);
  font-weight: var(--font-weight-medium);
  min-height: 28px;
}
.detail-content .tip-box {
  margin-top: var(--spacing-lg);
  background-color: var(--color-bg-tip);
  border-radius: var(--radius-md);
  padding: var(--spacing-md) var(--spacing-lg);
  border: 1px solid var(--color-border);
}
.detail-content .tip-box .tip-label {
  font-size: 0.7rem;
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-accent-text);
}
.detail-content .tip-box p {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  margin-top: var(--spacing-xs);
}
.empty-state {
  text-align: center;
  padding: var(--spacing-3xl) var(--spacing-lg);
  color: var(--color-text-muted);
  grid-column: 1/-1;
}
.empty-state h3 {
  font-size: 1.2rem;
  margin-bottom: var(--spacing-xs);
}
.site-header {
  padding: var(--spacing-md) 0;
  background-color: rgba(246, 244, 240, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
  transition:
    background-color var(--transition-base),
    border-color var(--transition-base);
}
[data-theme="dark"] .site-header {
  background-color: rgba(26, 24, 22, 0.85);
}
.logo,
.site-header .container {
  display: flex;
  align-items: center;
}
.site-header .container {
  justify-content: space-between;
}
.logo {
  font-weight: var(--font-weight-bold);
  font-size: 1.3rem;
  letter-spacing: -0.02em;
  gap: var(--spacing-sm);
  color: var(--color-text-primary);
}
.logo-text {
  display: inline;
}
.header-actions,
.theme-toggle {
  display: flex;
  align-items: center;
}
.header-actions {
  gap: var(--spacing-md);
}
.header-actions .btn {
  min-height: 40px;
  padding: 8px 20px;
  font-size: 0.85rem;
}
.theme-toggle {
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  border: 2px solid var(--color-border);
  background-color: var(--color-bg-surface);
  font-size: 1.2rem;
  transition: all var(--transition-base);
  flex-shrink: 0;
}
.theme-toggle:hover {
  background-color: var(--color-bg-hover);
  border-color: var(--color-border-focus);
}
.theme-toggle:focus-visible {
  outline: 2px solid var(--color-border-focus);
  outline-offset: 2px;
}
.page {
  display: none;
  animation: fadeUp 0.4s ease;
  padding: var(--spacing-xl) 0 var(--spacing-3xl);
}
.page.active {
  display: block;
}
main {
  flex: 1;
}
.hero {
  padding: var(--spacing-xl) 0 var(--spacing-md);
  text-align: center;
}
.hero h1,
.library-header h1 {
  font-weight: var(--font-weight-bold);
}
.hero h1 {
  font-size: clamp(2.4rem, 6vw, 4rem);
  letter-spacing: -0.03em;
  line-height: 1.1;
  max-width: 800px;
  margin: 0 auto var(--spacing-md);
}
.hero p {
  font-size: 1.2rem;
  color: var(--color-text-secondary);
  max-width: 580px;
  margin: 0 auto var(--spacing-xl);
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-md);
}
.featured-cta-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-md);
}
.featured-section {
  scroll-margin-top: 100px;
}
.featured-title {
  font-size: 1.5rem;
  font-weight: var(--font-weight-semibold);
  margin-top: var(--spacing-lg);
}
.featured-cta {
  text-align: center;
  margin-top: var(--spacing-xl);
}
.featured-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-2xl);
}
.library-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}
.library-header h1 {
  font-size: 1.8rem;
}
.library-count {
  font-size: 0.95rem;
}
.prompt-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-lg) 0;
  margin-top: auto;
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.85rem;
  transition: border-color var(--transition-base);
}
body {
  transition:
    background-color var(--transition-slow),
    color var(--transition-slow);
}
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--color-bg-primary);
}
::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-muted);
}
::selection {
  background-color: var(--color-accent);
  color: var(--color-text-inverse);
}
::-moz-selection {
  background-color: var(--color-accent);
  color: var(--color-text-inverse);
}
:focus-visible {
  outline: 2px solid var(--color-border-focus);
  outline-offset: 2px;
}
.theme-icon {
  display: inline-block;
  transition: transform var(--transition-base);
}
.theme-toggle:hover .theme-icon {
  transform: scale(1.1);
}
@media (max-width: 1024px) {
  .container {
    padding: 0 var(--spacing-md);
  }
  .detail-images > div {
    font-size: 2.8rem;
    min-height: 100px;
  }
}
@media (max-width: 768px) {
  :root {
    --spacing-xl: 24px;
    --spacing-2xl: 32px;
    --spacing-3xl: 48px;
  }
  .container {
    padding: 0 var(--spacing-md);
  }
  .site-header {
    padding: var(--spacing-sm) 0;
  }
  .logo {
    font-size: 1.1rem;
  }
  .header-actions {
    gap: var(--spacing-sm);
  }
  .header-actions .btn {
    padding: 6px 14px;
    font-size: 0.8rem;
    min-height: 34px;
  }
  .theme-toggle {
    width: 36px;
    height: 36px;
    font-size: 1rem;
  }
  .page {
    padding: var(--spacing-md) 0 var(--spacing-xl);
  }
  .hero {
    padding: var(--spacing-md) 0 0;
  }
  .hero h1 {
    font-size: 2rem;
  }
  .hero p {
    font-size: 1rem;
    margin-bottom: var(--spacing-lg);
  }
  .hero-actions .btn {
    width: 100%;
    justify-content: center;
  }
  .featured-cta-actions .btn {
    width: 100%;
    justify-content: center;
  }
  .featured-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
  }
  .featured-title {
    font-size: 1.25rem;
    margin-top: var(--spacing-md);
  }
  .access-box {
    padding: var(--spacing-lg) var(--spacing-md);
  }
  .access-box h1,
  .detail-content h2,
  .library-header h1 {
    font-size: 1.4rem;
  }
  .library-header {
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
  }
  .prompt-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  .library-controls {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  .library-controls .search-wrap {
    flex: 1 1 auto;
  }
  .library-controls .filter-wrap {
    justify-content: flex-start;
  }
  .library-controls .filter-wrap .filter-btn {
    padding: 6px 14px;
    font-size: 0.8rem;
  }
  .detail-content,
  .detail-content .prompt-box {
    padding: var(--spacing-md);
  }
  .card-body p,
  .detail-content .prompt-box pre {
    font-size: 0.85rem;
  }
  .detail-content .copy-wrap {
    flex-direction: column;
    align-items: stretch;
  }
  .detail-content .copy-wrap .btn {
    width: 100%;
    justify-content: center;
  }
  .detail-images > div {
    font-size: 2.4rem;
    min-height: 80px;
  }
  .detail-images .label {
    font-size: 0.65rem;
    bottom: var(--spacing-sm);
    left: var(--spacing-sm);
    padding: 2px 10px;
  }
  .img-pair > div {
    font-size: 2rem;
    min-height: 64px;
  }
  .img-pair .label {
    font-size: 0.55rem;
    bottom: var(--spacing-xs);
    left: var(--spacing-xs);
    padding: 1px 8px;
  }
  .card-body,
  .feature-card .card-body {
    padding: var(--spacing-md);
  }
  .card-body h3 {
    font-size: 0.95rem;
  }
  .card-body .card-actions .btn {
    font-size: 0.8rem;
    min-height: 36px;
    padding: 6px 12px;
  }
  .empty-state {
    padding: var(--spacing-xl) var(--spacing-md);
  }
  .site-footer {
    padding: var(--spacing-md) 0;
    font-size: 0.8rem;
  }
}
@media (max-width: 400px) {
  .container {
    padding: 0 var(--spacing-sm);
  }
  .hero h1 {
    font-size: 1.6rem;
  }
  .detail-content .detail-desc,
  .hero p {
    font-size: 0.9rem;
  }
  .access-box {
    padding: var(--spacing-md);
  }
  .access-box h1,
  .detail-content h2 {
    font-size: 1.2rem;
  }
  .access-box input {
    padding: 12px 14px;
    font-size: 0.9rem;
  }
  .detail-content .prompt-box pre {
    font-size: 0.8rem;
  }
  .btn,
  .library-controls .search-wrap input {
    font-size: 0.85rem;
    padding: 10px 14px 10px 38px;
  }
  .library-controls .search-wrap .search-icon {
    font-size: 0.9rem;
    left: 12px;
  }
  .btn {
    padding: 10px 20px;
    min-height: 44px;
  }
  .btn-sm {
    font-size: 0.75rem;
    padding: 6px 12px;
    min-height: 32px;
  }
  .theme-toggle {
    width: 32px;
    height: 32px;
    font-size: 0.9rem;
  }
  .header-actions .btn {
    font-size: 0.75rem;
    padding: 4px 10px;
    min-height: 30px;
  }
  .detail-images > div {
    font-size: 1.8rem;
    min-height: 64px;
  }
  .img-pair > div {
    font-size: 1.6rem;
    min-height: 56px;
  }
}
@media (prefers-reduced-motion: reduce) {
  *,
  ::after,
  ::before {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}
.img-pair img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ---- Upload progress (shared) ---- */
.image-upload .upload-progress {
  display: none;
  width: 100%;
  height: 4px;
  background: var(--color-border);
  border-radius: 2px;
  overflow: hidden;
  margin-top: 6px;
}
.image-upload .upload-progress.active {
  display: block;
}
.image-upload .upload-progress .bar {
  height: 100%;
  width: 0%;
  background: var(--color-accent);
  transition: width 0.3s ease;
}
.image-upload .upload-status {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  margin-top: 2px;
}
.image-upload .upload-status.success {
  color: var(--color-success, #27ae60);
}
.image-upload .upload-status.error {
  color: var(--color-error, #c0392b);
}

/* ---- Spinner for loading states ---- */
.spinner {
  display: inline-block;
  width: 18px;
  height: 18px;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ---- Skeleton loading states ---- */
.skeleton .skeleton-box {
  background: linear-gradient(
    90deg,
    var(--color-border) 25%,
    var(--color-bg-hover) 50%,
    var(--color-border) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}
.skeleton .skeleton-text {
  height: 1rem;
  background: linear-gradient(
    90deg,
    var(--color-border) 25%,
    var(--color-bg-hover) 50%,
    var(--color-border) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: 4px;
  margin-bottom: 0.5rem;
}
.skeleton .category-tag.skeleton-text {
  width: 60px;
  height: 1.2rem;
}
.skeleton .img-pair .before,
.skeleton .img-pair .after {
  background: var(--color-bg-surface-alt);
  filter: none;
}
.skeleton .img-pair .before .skeleton-box,
.skeleton .img-pair .after .skeleton-box {
  width: 100%;
  height: 100%;
  background: var(--color-bg-surface-alt);
  animation: none;
}
.skeleton .img-pair .label {
  display: none;
}
@keyframes shimmer {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

/* ---- 5:8 aspect ratio for prompt cards, 4:5 for detail images ---- */
.img-pair,
.featured-grid .prompt-card .img-pair,
.library-grid .prompt-card .img-pair,
.skeleton .img-pair {
  aspect-ratio: 8 / 5;
}
.detail-images > div {
  aspect-ratio: 4 / 5;
}
.img-pair img,
.detail-images img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}