/* ── Color Palette ──────────────────────────────────────────────── */
:root {
  --color-primary:       #930b27; /* Deep Red / Maroon */
  --color-primary-light: #b41031;
  --color-primary-dark:  #6a071c;
  --color-accent:        #0066cc; /* Solid Blue Accent */
  --color-accent-soft:   rgba(0, 102, 204, 0.1);
  --color-text:          #2b2b2b;
  --color-text-muted:    #6b7280;
  --color-bg:            #ffffff;
  --color-bg-soft:       #f9fafb;
  --color-border:        #e5e7eb;
  --color-success:       #10b981;
  --color-error:         #dc2626;

  /* ── Typography ─────────────────────────────────────────────────── */
  --font-sans: 'Inter', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --font-serif: 'Playfair Display', Georgia, serif;
  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-lg:   1.125rem;
  --text-xl:   1.25rem;
  --text-2xl:  1.5rem;
  --text-3xl:  1.875rem;
  --text-4xl:  2.25rem;

  /* ── Spacing & Radius ───────────────────────────────────────────── */
  --radius-sm:    4px;
  --radius-md:    8px;
  --radius-lg:    16px;
  --spacing-page: 1.5rem;

  /* ── Shadows (Flat & Crisp Elevation) ───────────────────────────── */
  --shadow-sm:    0 1px 2px rgba(0,0,0,0.06);
  --shadow-card:  0 2px 10px rgba(0,0,0,0.08);
  --shadow-hover: 0 12px 30px rgba(0,0,0,0.12);
  --shadow-glass: 0 8px 32px 0 rgba(0, 0, 0, 0.05);

  /* ── Glassmorphism ─────────────────────────────────────────────── */
  --glass-bg:      rgba(255, 255, 255, 0.95);
  --glass-border:  rgba(255, 255, 255, 0.1);
  --glass-blur:    8px;

  /* ── Card layout ────────────────────────────────────────────────── */
  --card-direction:      column;
  --card-image-ratio:    4/3;
  --card-image-width:    100%;
  --card-image-shrink:   0;
  --card-body-padding:   1.25rem;
  --card-hover-lift:     -4px;
  --card-border-width:   1px;
  --card-border-style:   solid;
  --card-price-size:     var(--text-xl);
  --card-title-size:     var(--text-lg);
  --card-meta-gap:       1.25rem;

  /* ── Grid layout ────────────────────────────────────────────────── */
  --grid-columns:  repeat(auto-fill, minmax(320px, 1fr));
  --grid-gap:      2rem;
  --grid-padding:  var(--spacing-page);

  /* ── Detail page ────────────────────────────────────────────────── */
  --detail-gallery-cols:     2fr 1fr 1fr;
  --detail-gallery-gap:      0.75rem;
  --detail-main-photo-rows:  span 2;
  --detail-specs-direction:  row;
  --detail-specs-gap:        2rem;
  --detail-price-size:       var(--text-3xl);

  /* ── Header ─────────────────────────────────────────────────────── */
  --header-bg:          #2a2a2a; /* Dark charcoal header */
  --header-text:        #ffffff;
  --header-border:      none;
  --header-position:    sticky;
  --header-padding-y:   1.25rem;
  --header-logo-size:   var(--text-2xl);

  /* Backward-compatible aliases */
  --font-size-xs:       var(--text-xs);
  --font-size-sm:       var(--text-sm);
  --font-size-base:     var(--text-base);
  --font-size-lg:       var(--text-lg);
  --font-size-xl:       var(--text-xl);
  --font-size-2xl:      var(--text-2xl);
  --font-size-3xl:      var(--text-3xl);
  --font-size-4xl:      var(--text-4xl);
  --font-size-5xl:      clamp(2.4rem, 5vw, 3.5rem);

  --leading-tight:      1.2;
  --leading-snug:       1.35;
  --leading-normal:     1.6;
  --leading-relaxed:    1.75;

  --tracking-tight:     -0.02em;
  --tracking-snug:      -0.01em;
  --tracking-wide:      0.05em;
  --tracking-wider:     0.1em;

  --spacing-1:          0.25rem;
  --spacing-2:          0.5rem;
  --spacing-3:          0.75rem;
  --spacing-4:          1rem;
  --spacing-5:          1.25rem;
  --spacing-6:          1.5rem;
  --spacing-8:          2rem;
  --spacing-10:         2.5rem;
  --spacing-12:         3rem;
  --spacing-16:         4rem;
  --spacing-20:         5rem;
  --spacing-24:         6rem;

  --color-bg-subtle:    var(--color-bg-soft);
  --color-text-secondary: var(--color-text-muted);
  --color-muted:        var(--color-text-muted);
  --color-border-subtle: color-mix(in srgb, var(--color-border) 60%, transparent);
  --color-surface:      var(--color-bg-soft);
  --color-accent-hover: #0052a3;
  --color-on-accent:    #fff;
  --color-accent-ring:  rgba(0, 102, 204, 0.2);

  --radius:             var(--radius-md);
  --transition-fast:    150ms ease-in-out;
  --transition-base:    250ms ease-in-out;
  --shadow-dropdown:    var(--shadow-card);
  --shadow-btn-active:  0 1px 2px rgba(0, 0, 0, 0.08);

  --tag-padding-y:      0.25rem;
  --avatar-size-xs:     24px;
  --avatar-size-sm:     32px;
  --avatar-size-md:     48px;
  --avatar-size-lg:     64px;

  --nav-height:         80px;
}

/* ── Dark mode (Premium Dark) ──────────────────────────────────── */
@media (prefers-color-scheme: dark) {
  :root {
    --color-text:      #f8fafc;
    --color-text-muted:#9ca3af;
    --color-bg:        #111827;
    --color-bg-soft:   #1f2937;
    --color-border:    #374151;
    --glass-bg:        rgba(31, 41, 55, 0.95);
    --color-accent:    #3b82f6;
  }
}

/* ── Reset & Base ───────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: var(--font-sans); color: var(--color-text); background: var(--color-bg); line-height: 1.6; }
img { max-width: 100%; display: block; }
a { color: var(--color-primary); }

/* ── Property Card ──────────────────────────────────────────────── */
.property-card {
  display: flex;
  flex-direction: var(--card-direction);
  border-radius: var(--radius-md);
  border: var(--card-border-width) var(--card-border-style) var(--color-border);
  overflow: hidden;
  background: var(--color-bg);
  box-shadow: var(--shadow-card);
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}
.property-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(var(--card-hover-lift));
}
.property-card__link {
  display: block;
  flex-shrink: var(--card-image-shrink);
  width: var(--card-image-width);
}
.property-card__image {
  aspect-ratio: var(--card-image-ratio);
  object-fit: cover;
  width: 100%;
  height: 100%;
}
.property-card__image--placeholder {
  aspect-ratio: var(--card-image-ratio);
  background: var(--color-bg-soft);
  width: 100%;
}
.property-card__body  { padding: var(--card-body-padding); flex: 1; min-width: 0; }
.property-card__price { font-size: var(--card-price-size); font-weight: 700; color: var(--color-primary); }
.property-card__title { font-size: var(--card-title-size); margin: 0.5rem 0; }
.property-card__title a { text-decoration: none; color: var(--color-text); }
.property-card__title a:hover { color: var(--color-primary); }
.property-card__meta  { display: flex; gap: var(--card-meta-gap); color: var(--color-text-muted); font-size: var(--text-sm); flex-wrap: wrap; margin-top: 0.5rem; }
.property-card__badge {
  display: inline-block;
  background: var(--color-accent);
  color: #fff;
  font-size: var(--text-sm);
  font-weight: 600;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-sm);
  margin: 0.5rem var(--card-body-padding);
  align-self: flex-start;
}

/* ── Property Grid ──────────────────────────────────────────────── */
.property-grid {
  display: grid;
  grid-template-columns: var(--grid-columns);
  gap: var(--grid-gap);
  padding: var(--grid-padding);
}
.property-grid__empty {
  padding: var(--spacing-page);
  color: var(--color-text-muted);
  text-align: center;
}

/* ── Property Detail ────────────────────────────────────────────── */
.property-detail__gallery {
  display: grid;
  grid-template-columns: var(--detail-gallery-cols);
  gap: var(--detail-gallery-gap);
  margin-bottom: 2rem;
}
.property-detail__photo--main {
  grid-row: var(--detail-main-photo-rows);
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
}
.property-detail__photo {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
}
.property-detail__title   { font-size: var(--text-3xl); margin: 0.5rem 0; }
.property-detail__price   { font-size: var(--detail-price-size); color: var(--color-primary); font-weight: 700; }
.property-detail__address { color: var(--color-text-muted); }
.property-detail__specs {
  list-style: none;
  display: flex;
  flex-direction: var(--detail-specs-direction);
  flex-wrap: wrap;
  gap: var(--detail-specs-gap);
  padding: 1.5rem 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  margin: 1.5rem 0;
}
.property-detail__description { line-height: 1.8; }

/* ── Search Bar ─────────────────────────────────────────────────── */
.search-bar { background: var(--color-bg-soft); border-bottom: 1px solid var(--color-border); padding: 1rem var(--spacing-page); }
.search-bar form { display: flex; flex-wrap: wrap; gap: 0.75rem; align-items: flex-end; max-width: 1200px; margin: 0 auto; }
.search-bar select, .search-bar input { padding: 0.5rem 0.75rem; border: 1px solid var(--color-border); border-radius: var(--radius-sm); font-size: var(--text-sm); background: var(--color-bg); }

/* ── Contact Form ───────────────────────────────────────────────── */
.contact-form { max-width: 600px; margin: 2rem auto; padding: var(--spacing-page); }
.form-group { margin-bottom: 1.25rem; }
.form-group label { display: block; margin-bottom: 0.375rem; font-weight: 500; }
.form-group input, .form-group textarea, .form-group select { width: 100%; padding: 0.625rem 0.75rem; border: 1px solid var(--color-border); border-radius: var(--radius-sm); font-size: var(--text-base); }
.field-error { color: var(--color-error); font-size: var(--text-sm); display: block; margin-top: 0.25rem; }
.form-status.success { color: var(--color-success); margin: 1rem 0; }
.form-status.error   { color: var(--color-error); margin: 1rem 0; }

/* ── Buttons ────────────────────────────────────────────────────── */
.btn { display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.625rem 1.25rem; border-radius: var(--radius-sm); font-weight: 600; cursor: pointer; border: none; font-size: var(--text-base); text-decoration: none; }
.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-light); }
.btn:disabled { opacity: 0.6; cursor: not-allowed; }

/* ── Pagination ─────────────────────────────────────────────────── */
.pagination { display: flex; gap: 0.5rem; justify-content: center; padding: 2rem; }
.pagination a { padding: 0.5rem 0.75rem; border: 1px solid var(--color-border); border-radius: var(--radius-sm); text-decoration: none; }
.pagination a.active, .pagination a[aria-current] { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }