/* ==========================================================================
   A.L Ejendomme ApS — design tokens
   Palette drawn from Danish building materials rather than a stock
   cream/terracotta template: limestone render, brick, oxidised copper
   roofing, and brass door fittings.
   ========================================================================== */

:root {
  /* Colour */
  --color-bg:          #EDE6D9;  /* limestone render */
  --color-surface:     #F7F2E8;  /* card surface */
  --color-surface-alt: #E3D9C6;  /* deeper warm section bg */
  --color-ink:         #2B241C;  /* warm charcoal text */
  --color-ink-soft:    #5C5245;  /* muted secondary text */
  --color-brick:       #A8462F;  /* primary accent */
  --color-brick-dark:  #7E3220;
  --color-copper:      #4C6B5C;  /* secondary accent */
  --color-copper-dark: #374F42;
  --color-brass:       #B08D3E;  /* tertiary accent */
  --color-border:      #D8CBB0;
  --color-cream:       #FBF8F2;

  /* Semantic aliases so dark mode can retint text/inputs without touching
     the "always dark" accent-panel role that --color-ink also plays
     (footer, sidebar, hero illustration, etc). */
  --color-text:     var(--color-ink);
  --color-input-bg: var(--color-cream);
  --color-brick-text:  var(--color-brick-dark);
  --color-copper-text: var(--color-copper-dark);
  --color-header-bg: rgba(237, 230, 217, 0.94);
  --color-hero-overlay: rgba(43, 36, 28, 0.16);

  /* Type */
  --font-display: 'Fraunces', Georgia, 'Times New Roman', serif;
  --font-body:    'Karla', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono:    'Space Mono', 'Courier New', monospace;

  /* Layout */
  --max-width: 1180px;
  --radius: 3px;
  --shadow-card: 0 2px 0 rgba(43, 36, 28, 0.06), 0 12px 24px -16px rgba(43, 36, 28, 0.35);
}

/* Dark theme — toggled via the sun/moon button in the header, persisted
   in localStorage. Only the tokens that need to invert are overridden;
   the brick/copper/brass accents stay constant across both themes since
   they double as both text colours and panel backgrounds throughout. */
html[data-theme="dark"] {
  --color-bg:          #1C1712;
  --color-surface:     #262019;
  --color-surface-alt: #302819;
  --color-ink:         #3A3126;
  --color-text:        #EDE3D3;
  --color-ink-soft:    #B3A692;
  --color-border:      #6B5C46;
  --color-input-bg:    #2A2219;
  --color-brick-text:  #E0785C;
  --color-copper-text: #8FC1A3;
  --color-header-bg: rgba(28, 23, 18, 0.9);
  --color-hero-overlay: rgba(0, 0, 0, 0.35);
  --shadow-card: 0 2px 0 rgba(0, 0, 0, 0.2), 0 12px 24px -16px rgba(0, 0, 0, 0.6);
}

/* ==========================================================================
   Reset / base
   ========================================================================== */

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* Scroll-reveal: JS adds .reveal-on-scroll then .is-visible when an
   element first crosses into the viewport (see js/main.js). */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
  .reveal-on-scroll { opacity: 1; transform: none; transition: none; }
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { margin: 0; padding: 0; list-style: none; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.15;
  margin: 0 0 0.5em;
  color: var(--color-text);
}
h1 { font-size: clamp(2.1rem, 4vw, 3.4rem); font-weight: 500; }
h2 { font-size: clamp(1.6rem, 3vw, 2.3rem); }
h3 { font-size: 1.3rem; }
p { margin: 0 0 1em; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-brick-text);
}

a:focus-visible, button:focus-visible, input:focus-visible,
select:focus-visible, textarea:focus-visible {
  outline: 3px solid var(--color-brass);
  outline-offset: 2px;
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.95rem;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}
.btn:hover { transform: translateY(-1px); }

.btn-primary { background: var(--color-brick); color: var(--color-cream); }
.btn-primary:hover { background: var(--color-brick-dark); }

.btn-secondary { background: transparent; border-color: var(--color-text); color: var(--color-text); }
.btn-secondary:hover { background: var(--color-ink); color: var(--color-cream); }

.btn-outline-light { background: transparent; border-color: rgba(247,242,232,0.6); color: var(--color-cream); }
.btn-outline-light:hover { background: rgba(247,242,232,0.12); }

.btn-small { padding: 8px 16px; font-size: 0.85rem; }
.btn-danger { background: transparent; border-color: var(--color-brick-text); color: var(--color-brick-text); }
.btn-danger:hover { background: var(--color-brick); color: var(--color-cream); }

/* ==========================================================================
   Header
   ========================================================================== */

.site-header {
  position: sticky; top: 0; z-index: 50;
  background: var(--color-header-bg);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--color-border);
}
.site-header .container {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 14px; padding-bottom: 14px;
}
.logo { display: flex; align-items: center; gap: 10px; }
.logo svg { width: 38px; height: 38px; flex-shrink: 0; }
.logo-text { font-family: var(--font-display); font-size: 1.15rem; font-weight: 600; }
.logo-text small { display: block; font-family: var(--font-mono); font-size: 0.62rem; letter-spacing: 0.1em; color: var(--color-ink-soft); font-weight: 400; text-transform: uppercase; }

.main-nav { display: flex; align-items: center; gap: 28px; }
.main-nav a { font-weight: 700; font-size: 0.93rem; position: relative; padding: 4px 0; }
.main-nav a::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -3px; height: 2px;
  background: var(--color-brick); transform: scaleX(0); transform-origin: left;
  transition: transform 0.2s ease;
}
.main-nav a:hover::after, .main-nav a.active::after { transform: scaleX(1); }

.lang-toggle { display: flex; border: 1.5px solid var(--color-text); border-radius: 20px; overflow: hidden; font-family: var(--font-mono); font-size: 0.78rem; }
.lang-toggle a { padding: 5px 12px; font-weight: 700; }
.lang-toggle a.active { background: var(--color-ink); color: var(--color-cream); }

.header-right { display: flex; align-items: center; gap: 14px; }

.user-menu { display: flex; align-items: center; gap: 12px; }

.theme-toggle {
  background: none; border: 1.5px solid var(--color-text); border-radius: 50%;
  width: 34px; height: 34px; display: flex; align-items: center; justify-content: center;
  cursor: pointer; color: var(--color-text); flex-shrink: 0; padding: 0;
}
.theme-toggle:hover { background: var(--color-surface-alt); }
.theme-toggle .icon-moon { display: none; }
html[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
html[data-theme="dark"] .theme-toggle .icon-moon { display: block; }

.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 4px; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--color-text); margin: 5px 0; }

/* ==========================================================================
   Rooftop skyline motif (signature element)
   ========================================================================== */

.rooftop-band { display: block; width: 100%; height: 70px; color: var(--color-brick-dark); }
.rooftop-band svg { width: 100%; height: 100%; display: block; }
.rooftop-band.footer-band { color: var(--color-ink); }
.rooftop-hero { position: absolute; left: 0; right: 0; bottom: 0; height: 42%; color: var(--color-hero-overlay); }
.rooftop-hero svg { width: 100%; height: 100%; }

/* ==========================================================================
   Hero
   ========================================================================== */

.hero {
  position: relative; overflow: hidden;
  background: linear-gradient(120deg, #F2ECDE 0%, var(--color-surface-alt) 45%, #EFE7D6 75%, var(--color-surface-alt) 100%);
  background-size: 200% 200%;
  animation: heroShift 18s ease-in-out infinite;
  padding: 88px 0 0;
}
@keyframes heroShift {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}
@media (prefers-reduced-motion: reduce) {
  .hero { animation: none; }
}
.hero .container { position: relative; z-index: 2; }
.hero-inner { max-width: 720px; padding-bottom: 130px; }
.hero-title { margin-bottom: 0.4em; }
.hero-subtitle { font-size: 1.15rem; color: var(--color-ink-soft); max-width: 540px; margin-bottom: 2em; }
.hero-ctas { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 2.5em; }

.search-bar {
  display: flex; background: var(--color-input-bg); border: 1.5px solid var(--color-text);
  border-radius: 6px; overflow: hidden; max-width: 560px; box-shadow: var(--shadow-card);
}
.search-bar input {
  flex: 1; border: none; background: transparent; padding: 14px 16px;
  font-family: var(--font-body); font-size: 0.95rem; color: var(--color-text);
}
.search-bar input:focus { outline: none; }
.search-bar button {
  border: none; background: var(--color-copper); color: var(--color-cream);
  padding: 0 22px; font-weight: 700; cursor: pointer; font-family: var(--font-body);
}
.search-bar button:hover { background: var(--color-copper-dark); }

/* ==========================================================================
   Trust strip
   ========================================================================== */

.trust-strip { background: var(--color-ink); color: var(--color-cream); }
.trust-strip .container {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
  padding: 34px 24px;
}
.trust-item { text-align: center; }
.trust-number { font-family: var(--font-display); font-size: 2rem; color: var(--color-brass); display: block; }
.trust-label { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase; color: #C9C0B0; }

/* ==========================================================================
   Sections (generic)
   ========================================================================== */

.section { padding: 76px 0; }
.section-alt { background: var(--color-surface-alt); }
.section-head { max-width: 620px; margin-bottom: 42px; }
.section-head p { color: var(--color-ink-soft); font-size: 1.05rem; }
.section-head-row { display: flex; justify-content: space-between; align-items: flex-end; gap: 24px; flex-wrap: wrap; }

/* ==========================================================================
   Property cards
   ========================================================================== */

.property-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }

.property-card {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-card);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
  display: flex; flex-direction: column; position: relative;
}
.property-card:hover { transform: translateY(-4px); }

.favorite-form { position: absolute; top: 14px; left: 14px; z-index: 2; margin: 0; }
.favorite-btn {
  width: 34px; height: 34px; border-radius: 50%; border: none; cursor: pointer;
  background: rgba(43,36,28,0.45); color: #fff; display: flex; align-items: center; justify-content: center;
  transition: background 0.15s ease, transform 0.15s ease;
}
.favorite-btn:hover { transform: scale(1.08); }
.favorite-btn.is-active { background: var(--color-brick); }
.favorite-btn.just-toggled { animation: heartPop 0.35s ease; }
@keyframes heartPop {
  0%   { transform: scale(1); }
  35%  { transform: scale(1.35); }
  100% { transform: scale(1); }
}
@media (prefers-reduced-motion: reduce) {
  .favorite-btn.just-toggled { animation: none; }
}

.property-card-media { position: relative; aspect-ratio: 4/3; overflow: hidden; background: var(--color-surface-alt); }
.property-card-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.property-card:hover .property-card-media img { transform: scale(1.06); }
@media (prefers-reduced-motion: reduce) {
  .property-card-media img { transition: none; }
  .property-card:hover .property-card-media img { transform: none; }
}

.status-tab {
  position: absolute; top: 14px; right: -1px;
  font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.06em; text-transform: uppercase;
  padding: 5px 12px 5px 14px; color: var(--color-cream); font-weight: 700;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 8px 100%, 0 60%);
}
.status-available { background: var(--color-copper); }
.status-reserved { background: var(--color-brass); }
.status-rented { background: #6B5D4A; }

.property-card-body { padding: 20px 20px 22px; flex: 1; display: flex; flex-direction: column; }
.property-card-type { font-family: var(--font-mono); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--color-brick-text); margin-bottom: 6px; }
.property-card-title { font-size: 1.15rem; margin-bottom: 4px; }
.property-card-location { color: var(--color-ink-soft); font-size: 0.9rem; margin-bottom: 14px; }

.property-card-specs {
  display: flex; gap: 14px; font-family: var(--font-mono); font-size: 0.8rem;
  color: var(--color-ink-soft); border-top: 1px dashed var(--color-border);
  padding-top: 12px; margin-top: auto; margin-bottom: 14px;
}

.property-card-footer { display: flex; justify-content: space-between; align-items: center; }
.property-card-price { font-family: var(--font-display); font-size: 1.3rem; color: var(--color-brick-text); }
.property-card-price span { font-family: var(--font-body); font-size: 0.8rem; color: var(--color-ink-soft); font-weight: 400; }
.card-link { font-weight: 700; font-size: 0.85rem; color: var(--color-copper-text); border-bottom: 1.5px solid var(--color-copper-text); }

.view-all-row { text-align: center; margin-top: 40px; }

/* ==========================================================================
   About teaser (split layout)
   ========================================================================== */

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.split-illustration { background: var(--color-ink); border-radius: 6px; padding: 40px; color: var(--color-cream); position: relative; overflow: hidden; }
.split-illustration .rooftop-band { color: rgba(247,242,232,0.15); position: absolute; bottom: 0; left: 0; height: 90px; }
.split-illustration-inner { position: relative; z-index: 2; }
.badge-seal {
  width: 96px; height: 96px; border-radius: 50%; border: 2px solid var(--color-brass);
  display: flex; align-items: center; justify-content: center; flex-direction: column;
  font-family: var(--font-mono); text-align: center; margin-bottom: 24px; color: var(--color-brass);
}
.badge-seal strong { font-family: var(--font-display); font-size: 1.6rem; color: var(--color-cream); display: block; }
.badge-seal span { font-size: 0.6rem; letter-spacing: 0.08em; text-transform: uppercase; }

/* ==========================================================================
   How it works (genuine sequence — numbered)
   ========================================================================== */

.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; counter-reset: step; }
.step { position: relative; padding-top: 18px; border-top: 3px solid var(--color-brick); }
.step-number {
  font-family: var(--font-display); font-size: 2.4rem; color: var(--color-brick-text);
  opacity: 0.35; display: block; margin-bottom: 8px;
}
.step h3 { margin-bottom: 8px; }
.step p { color: var(--color-ink-soft); margin: 0; }

/* ==========================================================================
   Quote strip
   ========================================================================== */

.quote-strip { background: var(--color-copper-dark); color: var(--color-cream); text-align: center; padding: 70px 0; }
.quote-strip blockquote { font-family: var(--font-display); font-size: clamp(1.3rem, 2.4vw, 1.8rem); max-width: 760px; margin: 0 auto 20px; font-weight: 500; }
.quote-strip cite { font-family: var(--font-mono); font-size: 0.82rem; color: #C9DBCE; font-style: normal; }

/* ==========================================================================
   Contact teaser
   ========================================================================== */

.contact-teaser { text-align: center; }
.contact-teaser h2 { margin-bottom: 0.3em; }
.contact-teaser p { color: var(--color-ink-soft); margin-bottom: 1.6em; }

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer { background: var(--color-ink); color: var(--color-cream); }
.footer-columns { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; padding: 56px 0 40px; }
.footer-brand .logo-text { color: var(--color-cream); }
.footer-brand p { color: #C9C0B0; max-width: 320px; margin-top: 14px; }
.footer-col h4 { font-family: var(--font-mono); font-size: 0.75rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--color-brass); margin-bottom: 16px; }
.footer-col li { margin-bottom: 10px; }
.footer-col a:hover, .footer-col address a:hover { color: var(--color-brass); }
.footer-col address { font-style: normal; color: #C9C0B0; line-height: 1.7; }
.footer-bottom {
  border-top: 1px solid rgba(247,242,232,0.15); padding: 20px 0;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px;
  font-family: var(--font-mono); font-size: 0.75rem; color: #9C9384;
}

/* ==========================================================================
   Listings page
   ========================================================================== */

.page-header { padding: 56px 0 40px; background: var(--color-surface-alt); }
.page-header p { color: var(--color-ink-soft); font-size: 1.05rem; max-width: 560px; }

.filter-form {
  display: grid; grid-template-columns: repeat(5, 1fr) auto; gap: 14px; align-items: end;
  background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius);
  padding: 20px; margin: -28px 0 40px; position: relative; z-index: 3; box-shadow: var(--shadow-card);
}
.field label { display: block; font-family: var(--font-mono); font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--color-ink-soft); margin-bottom: 6px; }
.field select, .field input {
  width: 100%; padding: 10px 12px; border: 1.5px solid var(--color-border); border-radius: var(--radius);
  font-family: var(--font-body); font-size: 0.9rem; background: var(--color-input-bg); color: var(--color-text);
}
.filter-actions { display: flex; gap: 8px; }

.results-count { font-family: var(--font-mono); font-size: 0.85rem; color: var(--color-ink-soft); margin-bottom: 24px; }

.empty-state { text-align: center; padding: 70px 20px; background: var(--color-surface); border: 1px dashed var(--color-border); border-radius: var(--radius); }
.empty-state h3 { margin-bottom: 8px; }
.empty-state p { color: var(--color-ink-soft); margin-bottom: 20px; }

/* ==========================================================================
   Property detail page
   ========================================================================== */

.property-hero { padding: 32px 0 0; }
.breadcrumb { font-family: var(--font-mono); font-size: 0.8rem; color: var(--color-ink-soft); margin-bottom: 18px; }
.breadcrumb a { color: var(--color-copper-text); font-weight: 700; }

.property-gallery { display: grid; grid-template-columns: 2fr 1fr; gap: 10px; margin-bottom: 40px; border-radius: 6px; overflow: hidden; }
.property-gallery .main-photo { aspect-ratio: 4/3; overflow: hidden; }
.property-gallery .main-photo img { width: 100%; height: 100%; object-fit: cover; }
.thumb-stack { display: grid; grid-template-rows: 1fr 1fr; gap: 10px; }
.thumb-stack div { overflow: hidden; }
.thumb-stack img { width: 100%; height: 100%; object-fit: cover; }

.property-detail-layout { display: grid; grid-template-columns: 1.6fr 1fr; gap: 50px; align-items: start; }

.property-title-row { display: flex; justify-content: space-between; align-items: flex-start; gap: 20px; margin-bottom: 6px; }
.property-location { color: var(--color-ink-soft); margin-bottom: 24px; }

.spec-table { width: 100%; border-collapse: collapse; margin: 28px 0; font-family: var(--font-mono); font-size: 0.92rem; }
.spec-table tr { border-bottom: 1px dashed var(--color-border); }
.spec-table td { padding: 12px 4px; }
.spec-table td:first-child { color: var(--color-ink-soft); }
.spec-table td:last-child { text-align: right; font-weight: 700; color: var(--color-text); }

.description-block h3 { margin-top: 32px; }
.description-block p { color: var(--color-ink-soft); }

.inquiry-panel {
  background: var(--color-surface); border: 1px solid var(--color-border); border-radius: 6px;
  padding: 28px; position: sticky; top: 100px; box-shadow: var(--shadow-card);
}
.inquiry-panel .property-card-price { font-size: 1.6rem; margin-bottom: 4px; }
.inquiry-panel h3 { margin-top: 18px; }
.inquiry-panel p.lede { color: var(--color-ink-soft); font-size: 0.92rem; }

/* ==========================================================================
   Forms
   ========================================================================== */

.form-row { margin-bottom: 16px; }
.form-row label { display: block; font-weight: 700; font-size: 0.88rem; margin-bottom: 6px; }
.form-row input, .form-row textarea, .form-row select {
  width: 100%; padding: 11px 13px; border: 1.5px solid var(--color-border); border-radius: var(--radius);
  font-family: var(--font-body); font-size: 0.94rem; background: var(--color-input-bg); color: var(--color-text);
}
.form-row textarea { min-height: 110px; resize: vertical; }
.form-note { font-size: 0.8rem; color: var(--color-ink-soft); margin-top: 4px; }
.form-alert { padding: 13px 16px; border-radius: var(--radius); font-size: 0.9rem; margin-bottom: 20px; }
.form-alert.success { background: #E4ECE3; border: 1px solid var(--color-copper); color: var(--color-copper-dark); }
.form-alert.error { background: #F5E4DE; border: 1px solid var(--color-brick); color: var(--color-brick-dark); }

/* ==========================================================================
   About & Contact pages
   ========================================================================== */

.values-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; margin-top: 20px; }
.value-card { padding: 24px; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius); }
.value-card h3 { color: var(--color-brick-text); }

.contact-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: start; }
.contact-info-card { background: var(--color-ink); color: var(--color-cream); border-radius: 6px; padding: 32px; }
.contact-info-card h3 { color: var(--color-cream); }
.contact-info-card .footer-col h4 { margin-top: 20px; }
.contact-info-card address { color: #C9C0B0; }

/* ==========================================================================
   Admin banner link (shown on public site footer only)
   ========================================================================== */

.admin-strip { background: #1E1913; color: #9C9384; font-family: var(--font-mono); font-size: 0.72rem; text-align: center; padding: 8px; }
.admin-strip a { color: var(--color-brass); }

.back-to-top {
  position: fixed; right: 20px; bottom: 20px; z-index: 60;
  width: 44px; height: 44px; border-radius: 50%; border: 1.5px solid var(--color-border);
  background: var(--color-surface); color: var(--color-text); box-shadow: var(--shadow-card);
  display: flex; align-items: center; justify-content: center; cursor: pointer;
  opacity: 0; visibility: hidden; transform: translateY(8px);
  transition: opacity 0.25s ease, transform 0.25s ease, background 0.15s ease;
}
.back-to-top.is-visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { background: var(--color-surface-alt); }
@media (prefers-reduced-motion: reduce) {
  .back-to-top { transition: opacity 0.01s linear; }
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 920px) {
  .property-grid { grid-template-columns: repeat(2, 1fr); }
  .split, .contact-layout { grid-template-columns: 1fr; }
  .footer-columns { grid-template-columns: 1fr 1fr; }
  .property-detail-layout { grid-template-columns: 1fr; }
  .inquiry-panel { position: static; }
  .filter-form { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .main-nav, .header-right .lang-toggle, .header-right .user-menu { display: none; }
  .nav-toggle { display: block; }
  .site-header.nav-open .main-nav {
    display: flex; position: absolute; top: 100%; left: 0; right: 0;
    background: var(--color-bg); flex-direction: column; padding: 20px 24px; gap: 16px;
    border-bottom: 1px solid var(--color-border);
    animation: navSlideDown 0.22s ease;
  }
  @keyframes navSlideDown {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
  }
  @media (prefers-reduced-motion: reduce) {
    .site-header.nav-open .main-nav { animation: none; }
  }
  .site-header.nav-open .header-right .lang-toggle { display: flex; margin-top: 8px; }
  .site-header.nav-open .header-right .user-menu { display: flex; margin-top: 8px; }
  .property-grid { grid-template-columns: 1fr; }
  .steps, .values-grid, .footer-columns { grid-template-columns: 1fr; }
  .trust-strip .container { grid-template-columns: repeat(2, 1fr); }
  .page-header { padding: 40px 0 56px; }
  .filter-form { grid-template-columns: 1fr; margin-top: 0; }
  .property-gallery { grid-template-columns: 1fr; }
  .thumb-stack { grid-template-rows: 1fr; grid-template-columns: 1fr 1fr; }
  .hero-ctas { flex-direction: column; }
  .search-bar { max-width: 100%; }
  .property-title-row { flex-direction: column; }
  .property-title-row > div:last-child { width: 100%; justify-content: space-between; margin-top: 14px; }
  .theme-toggle { width: 40px; height: 40px; }
  .nav-toggle { padding: 8px; }
  .favorite-btn { width: 38px; height: 38px; }
}