/* ================================================================
   LibreStock — Light / Premium Design System
   ================================================================ */

/* --------------------------------
   1. Custom Properties
   -------------------------------- */
:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f7f7f7;
  --color-bg-elevated: #f0f0f0;
  --color-surface: #fafafa;
  --color-text: #1a1a1a;
  --color-text-secondary: #6b6b6b;
  --color-text-tertiary: #999999;
  --color-border: #e5e5e5;
  --color-border-subtle: #f0f0f0;
  --color-black: #000000;
  --color-white: #ffffff;

  --font-serif: 'Spectral', Georgia, 'Times New Roman', serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.75rem;
  --text-3xl: clamp(1.75rem, 1.2rem + 1.5vw, 2.5rem);
  --text-4xl: clamp(2.25rem, 1.5rem + 2.5vw, 3.5rem);
  --text-hero: clamp(2.25rem, 1.2rem + 3.5vw, 4rem);

  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  --space-5xl: 8rem;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 20px;
  --radius-full: 9999px;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --duration-fast: 150ms;
  --duration-normal: 300ms;
  --duration-slow: 500ms;

  --header-h: 64px;
  --max-w: 1360px;
  --max-w-narrow: 880px;
  --masonry-gap: 12px;
}

/* --------------------------------
   2. Reset & Base
   -------------------------------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img, video, canvas { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }
input, textarea { font: inherit; color: inherit; }

::selection {
  background: var(--color-text);
  color: var(--color-white);
}

/* --------------------------------
   3. Typography
   -------------------------------- */
h1, h2, h3 {
  font-family: var(--font-serif);
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -0.04em;
}

h1 { font-size: var(--text-hero); }
h2 { font-size: var(--text-4xl); }
h3 { font-size: var(--text-2xl); }

h4, h5 {
  font-family: var(--font-sans);
  font-weight: 600;
  line-height: 1.3;
}

p { max-width: 60ch; }

em {
  font-family: var(--font-serif);
  font-style: italic;
}

.label {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-tertiary);
}

.mono {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
}

/* --------------------------------
   4. Layout
   -------------------------------- */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.container--narrow { max-width: var(--max-w-narrow); }
.container--wide { max-width: 1600px; }

.section {
  padding: var(--space-5xl) 0;
}

.section-header {
  margin-bottom: var(--space-3xl);
}

.section-header p {
  margin-top: var(--space-md);
  color: var(--color-text-secondary);
  font-size: var(--text-lg);
}

/* --------------------------------
   5. Header
   -------------------------------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  border-bottom: 1px solid transparent;
  transition: border-color var(--duration-normal);
}

.site-header.scrolled {
  border-bottom-color: var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.logo {
  font-family: var(--font-sans);
  font-size: var(--text-lg);
  font-weight: 700;
  letter-spacing: -0.03em;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav-link {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  transition: color var(--duration-fast);
}

.nav-link:hover { color: var(--color-text); }

.search-trigger {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 8px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
  transition: all var(--duration-normal) var(--ease-out);
  min-width: 200px;
}

.search-trigger:hover {
  border-color: var(--color-text-secondary);
  color: var(--color-text-secondary);
}

.search-trigger svg { width: 15px; height: 15px; flex-shrink: 0; }

.search-trigger kbd {
  margin-left: auto;
  font-family: var(--font-sans);
  font-size: 11px;
  padding: 1px 6px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-tertiary);
}

.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  align-items: center; justify-content: center;
}

.nav-toggle span {
  display: block; width: 18px; height: 1.5px;
  background: var(--color-text); position: relative;
}

.nav-toggle span::before,
.nav-toggle span::after {
  content: ''; position: absolute; width: 100%; height: 100%;
  background: var(--color-text); left: 0;
}

.nav-toggle span::before { transform: translateY(-5px); }
.nav-toggle span::after { transform: translateY(5px); }

.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after { transition: transform var(--duration-normal), background var(--duration-normal); }

.site-header.nav-open .nav-toggle span { background: transparent; }
.site-header.nav-open .nav-toggle span::before { transform: rotate(45deg); }
.site-header.nav-open .nav-toggle span::after { transform: rotate(-45deg); }

.mobile-menu { display: none; }

@media (max-width: 768px) {
  .site-header.nav-open .mobile-menu {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
  }

  .mobile-menu .nav-link {
    display: block;
    padding: var(--space-md) var(--space-xl);
    font-size: var(--text-base);
    color: var(--color-text-secondary);
    border-bottom: 1px solid var(--color-border);
  }

  .mobile-menu .nav-link:last-child { border-bottom: none; }
}

/* --------------------------------
   6. Hero
   -------------------------------- */
.hero {
  padding: calc(var(--header-h) + var(--space-4xl)) 0 var(--space-3xl);
  text-align: center;
}

.hero-meta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.hero-meta .divider-dot {
  width: 3px; height: 3px;
  border-radius: 50%;
  background: var(--color-text-tertiary);
}

.hero h1 {
  max-width: 800px;
  margin: 0 auto var(--space-lg);
}

.hero-subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  max-width: 520px;
  margin: 0 auto var(--space-2xl);
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
}

/* --------------------------------
   7. Masonry Grid
   -------------------------------- */
.masonry-section {
  padding: 0 var(--space-lg) var(--space-5xl);
}

.masonry {
  column-count: 4;
  column-gap: var(--masonry-gap);
}

.masonry-item {
  break-inside: avoid;
  margin-bottom: var(--masonry-gap);
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  display: block;
  background: var(--color-bg-alt);
}

.masonry-item img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.6s var(--ease-out);
}

.masonry-item:hover img {
  transform: scale(1.03);
}

.masonry-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.55) 0%, transparent 50%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--space-lg);
  opacity: 0;
  transition: opacity var(--duration-normal) var(--ease-out);
}

.masonry-item:hover .masonry-overlay {
  opacity: 1;
}

.masonry-title {
  font-family: var(--font-serif);
  font-size: var(--text-xl);
  color: #fff;
  margin-bottom: 2px;
}

.masonry-meta {
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.65);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.masonry-meta svg { width: 13px; height: 13px; }

/* --------------------------------
   8. Values / About
   -------------------------------- */
.values {
  padding: var(--space-5xl) 0;
  background: var(--color-bg-alt);
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  margin-top: var(--space-3xl);
}

.value-card {
  padding: var(--space-2xl);
  background: var(--color-white);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  transition: box-shadow var(--duration-normal) var(--ease-out);
}

.value-card:hover {
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.04);
}

.value-icon {
  width: 44px; height: 44px;
  border-radius: var(--radius-md);
  background: var(--color-bg-alt);
  display: flex;
  align-items: center; justify-content: center;
  margin-bottom: var(--space-lg);
  color: var(--color-text);
}

.value-icon svg { width: 20px; height: 20px; }

.value-card h3 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-sm);
}

.value-card p {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.65;
}

/* --------------------------------
   9. CTA Banner
   -------------------------------- */
.cta-banner {
  padding: var(--space-5xl) 0;
  text-align: center;
}

.cta-banner h2 { margin-bottom: var(--space-md); }

.cta-banner p {
  margin: 0 auto var(--space-2xl);
  color: var(--color-text-secondary);
  font-size: var(--text-lg);
}

/* --------------------------------
   10. Photo Detail Page
   -------------------------------- */
.photo-detail {
  padding: calc(var(--header-h) + var(--space-2xl)) 0 var(--space-4xl);
}

.photo-detail-grid {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: var(--space-3xl);
  align-items: start;
}

.photo-preview {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-bg-alt);
}

.photo-preview img { width: 100%; height: auto; }

.photo-preview-placeholder {
  width: 100%;
  aspect-ratio: 3 / 2;
  display: flex;
  align-items: center; justify-content: center;
  background: var(--color-bg-alt);
}

.photo-sidebar {
  position: sticky;
  top: calc(var(--header-h) + var(--space-xl));
}

.photo-sidebar h1 {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-sm);
}

.photo-description {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2xl);
  line-height: 1.7;
}

.photo-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  padding: var(--space-lg) 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-xl);
}

.photo-meta dt {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.photo-meta dd {
  font-size: var(--text-sm);
  font-weight: 500;
  margin-top: 2px;
}

.download-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.photo-license {
  margin-top: var(--space-lg);
  padding: var(--space-md) var(--space-lg);
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.photo-license strong {
  color: var(--color-text);
}

.photo-back {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2xl);
  transition: color var(--duration-fast);
}

.photo-back:hover { color: var(--color-text); }

.more-photos {
  padding: var(--space-4xl) 0;
  border-top: 1px solid var(--color-border);
}

/* --------------------------------
   11. Search Page
   -------------------------------- */
.search-page {
  padding: calc(var(--header-h) + var(--space-3xl)) 0 var(--space-4xl);
  min-height: 100vh;
}

.search-hero {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.search-hero h1 {
  font-size: var(--text-4xl);
  margin-bottom: var(--space-xl);
}

.search-form { max-width: 600px; margin: 0 auto; }

.search-input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.search-input-wrap svg {
  position: absolute;
  left: var(--space-lg);
  width: 18px; height: 18px;
  color: var(--color-text-tertiary);
  pointer-events: none;
}

.search-input {
  width: 100%;
  padding: 14px 14px 14px 48px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: var(--text-base);
  color: var(--color-text);
  outline: none;
  transition: all var(--duration-normal) var(--ease-out);
}

.search-input::placeholder { color: var(--color-text-tertiary); }

.search-input:focus {
  border-color: var(--color-text);
  box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.04);
}

.search-results-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--color-border);
}

.search-results-header h2 {
  font-size: var(--text-xl);
  font-weight: 600;
  font-family: var(--font-sans);
}

.search-results-count {
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
}

.search-empty {
  text-align: center;
  padding: var(--space-5xl) 0;
  color: var(--color-text-tertiary);
}

.search-empty svg {
  width: 48px; height: 48px;
  margin: 0 auto var(--space-lg);
  opacity: 0.25;
}

.search-empty p { margin: 0 auto; }

/* Mixed results grid — 4 columns */
.results-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
}

.result-card {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border-subtle);
  transition: all var(--duration-normal) var(--ease-out);
  display: block;
}

.result-card:hover {
  border-color: var(--color-border);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  transform: translateY(-2px);
}

.result-card-image {
  position: relative;
  overflow: hidden;
}

.result-card-image img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  transition: transform 0.5s var(--ease-out);
}

.result-card:hover .result-card-image img {
  transform: scale(1.03);
}

.result-card-placeholder {
  width: 100%;
  aspect-ratio: 4 / 3;
  background: var(--color-bg-alt);
}

.result-card-body {
  padding: var(--space-sm) var(--space-md) var(--space-md);
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.result-card-title {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.result-card-sub {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
}

/* Badges */
.result-badge {
  position: absolute;
  top: var(--space-sm);
  left: var(--space-sm);
  padding: 3px 10px;
  border-radius: var(--radius-sm);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  line-height: 1;
}

.result-badge--free {
  background: var(--color-text);
  color: var(--color-white);
}

.result-badge--premium {
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(8px);
  color: var(--color-text);
}

/* --------------------------------
   12. Footer
   -------------------------------- */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-grid {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-3xl);
  margin-bottom: var(--space-3xl);
  flex-wrap: wrap;
}

.footer-brand p {
  color: var(--color-text-tertiary);
  font-size: var(--text-sm);
  margin-top: var(--space-sm);
  max-width: 300px;
}

.footer-links h4 {
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: var(--space-md);
}

.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer-links a {
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
  transition: color var(--duration-fast);
}

.footer-links a:hover { color: var(--color-text); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  gap: var(--space-md);
  flex-wrap: wrap;
}

/* --------------------------------
   13. Buttons & Components
   -------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 12px 24px;
  font-size: var(--text-sm);
  font-weight: 500;
  border-radius: var(--radius-full);
  transition: all var(--duration-normal) var(--ease-out);
  white-space: nowrap;
}

.btn svg { width: 16px; height: 16px; }

.btn-primary {
  background: var(--color-text);
  color: var(--color-white);
}

.btn-primary:hover {
  background: #333;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
}

.btn-outline {
  border: 1px solid var(--color-border);
  color: var(--color-text);
}

.btn-outline:hover {
  border-color: var(--color-text);
}

.btn-download {
  background: var(--color-text);
  color: var(--color-white);
  width: 100%;
  padding: 14px 24px;
}

.btn-download:hover {
  background: #333;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
}

.btn-download-outline {
  border: 1px solid var(--color-border);
  color: var(--color-text);
  width: 100%;
  padding: 14px 24px;
}

.btn-download-outline:hover {
  border-color: var(--color-text);
}

/* Photo grid (search results / more photos) */
.photo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: var(--space-md);
}

.photo-card {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-bg-alt);
  transition: transform var(--duration-slow) var(--ease-out),
              box-shadow var(--duration-slow) var(--ease-out);
}

.photo-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
}

.photo-card-image { position: relative; overflow: hidden; }

.photo-card-image img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  transition: transform 0.6s var(--ease-out);
}

.photo-card:hover .photo-card-image img { transform: scale(1.04); }

.photo-card-placeholder {
  position: absolute; inset: 0;
  display: flex;
  align-items: center; justify-content: center;
  background: var(--color-bg-alt);
}

.photo-card-placeholder svg { width: 28px; height: 28px; opacity: 0.15; }

.photo-card-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.5) 0%, transparent 50%);
  opacity: 0;
  transition: opacity var(--duration-normal);
  display: flex;
  align-items: flex-end;
  padding: var(--space-md);
}

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

.photo-card-overlay .btn-sm {
  font-size: var(--text-sm);
  font-weight: 500;
  color: #fff;
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.photo-card-body {
  padding: var(--space-sm) var(--space-md) var(--space-md);
}

.photo-card-title {
  font-size: var(--text-sm);
  font-weight: 500;
}

.photo-card-id {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
}

/* --------------------------------
   14. Animations
   -------------------------------- */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}

.animate-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.stagger > * {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.5s var(--ease-out), transform 0.5s var(--ease-out);
}

.stagger.visible > *:nth-child(1) { transition-delay: 0ms; }
.stagger.visible > *:nth-child(2) { transition-delay: 60ms; }
.stagger.visible > *:nth-child(3) { transition-delay: 120ms; }
.stagger.visible > *:nth-child(4) { transition-delay: 180ms; }
.stagger.visible > *:nth-child(5) { transition-delay: 240ms; }
.stagger.visible > *:nth-child(6) { transition-delay: 300ms; }
.stagger.visible > *:nth-child(7) { transition-delay: 360ms; }
.stagger.visible > *:nth-child(8) { transition-delay: 420ms; }
.stagger.visible > *:nth-child(9) { transition-delay: 480ms; }
.stagger.visible > *:nth-child(10) { transition-delay: 540ms; }

.stagger.visible > * {
  opacity: 1;
  transform: translateY(0);
}

/* --------------------------------
   15. Responsive
   -------------------------------- */
@media (max-width: 1200px) {
  .masonry { column-count: 3; }
  .results-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 1024px) {
  .values-grid {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .photo-detail-grid {
    grid-template-columns: 1fr;
  }

  .photo-sidebar { position: static; }
}

@media (max-width: 768px) {
  .container { padding: 0 var(--space-md); }
  .masonry-section { padding: 0 var(--space-md) var(--space-4xl); }

  .section { padding: var(--space-3xl) 0; }

  .nav-actions .nav-link,
  .search-trigger kbd { display: none; }
  .nav-toggle { display: flex; }

  .search-trigger {
    min-width: auto;
    padding: 8px;
    border-radius: 50%;
    width: 36px; height: 36px;
    justify-content: center;
  }

  .search-trigger .search-label { display: none; }

  .masonry { column-count: 2; }

  .hero {
    padding-top: calc(var(--header-h) + var(--space-2xl));
    padding-bottom: var(--space-xl);
  }

  .hero-actions {
    flex-direction: column;
    gap: var(--space-sm);
  }

  .hero-actions .btn { width: 100%; }

  .results-grid { grid-template-columns: repeat(2, 1fr); }

  .photo-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-sm);
  }

  .footer-grid {
    flex-direction: column;
    gap: var(--space-2xl);
  }

  .photo-meta { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .masonry { column-count: 2; column-gap: 8px; }
  .masonry-item { margin-bottom: 8px; border-radius: var(--radius-sm); }
  .masonry-overlay { padding: var(--space-md); }
  .masonry-title { font-size: var(--text-base); }
  .results-grid { grid-template-columns: 1fr 1fr; }
}