/* ============================================
   LO MACKENNA DE BUIN - DESIGN SYSTEM CSS
   ============================================ */

/* ============================================
   1. ROOT VARIABLES & COLOR PALETTE
   ============================================ */

:root {
  /* Primary Brand Colors */
  --color-primary: #702963;
  --color-primary-dark: #562d4f;
  --color-primary-light: #9d5fa3;

  /* Secondary Accent */
  --color-secondary: #FF8C00;
  --color-secondary-dark: #E67E00;
  --color-secondary-light: #FFB84D;

  /* Action Colors */
  --color-success: #00A859;
  --color-success-dark: #008C45;
  --color-success-light: #4dd66d;

  /* Neutral & Text */
  --color-text-primary: #333333;
  --color-text-secondary: #666666;
  --color-text-disabled: rgba(0, 0, 0, 0.3);
  --color-border: #ddd;

  /* Surfaces */
  --color-white: #ffffff;
  --color-light-bg: #F7F7F7;
  --color-dark-bg: #3D3D3D;
  --color-overlay-dark: rgba(0, 0, 0, 0.7);
  --color-placeholder: #999999;

  /* ============================================
     2. TYPOGRAPHY VARIABLES
     ============================================ */

  /* Font Families */
  --font-heading: 'Montserrat', system-ui, -apple-system, sans-serif;
  --font-secondary: 'Oswald', system-ui, -apple-system, sans-serif;
  --font-body: 'Open Sans', system-ui, -apple-system, sans-serif;

  /* Font Sizes */
  --size-h1: 48px;
  --size-h2: 36px;
  --size-h3: 28px;
  --size-h4: 24px;
  --size-h5: 20px;
  --size-body: 14px;
  --size-small: 12px;
  --size-micro: 10px;
  --size-ui: 16px;

  /* Line Heights */
  --lh-tight: 1.2;
  --lh-normal: 1.3;
  --lh-comfortable: 1.5;
  --lh-relaxed: 1.6;

  /* Font Weights */
  --weight-light: 300;
  --weight-normal: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;

  /* ============================================
     3. SPACING SYSTEM
     ============================================ */

  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 12px;
  --spacing-lg: 16px;
  --spacing-xl: 20px;
  --spacing-2xl: 24px;
  --spacing-3xl: 32px;
  --spacing-4xl: 40px;
  --spacing-5xl: 48px;
  --spacing-6xl: 60px;
  --spacing-7xl: 80px;

  /* ============================================
     4. BORDER RADIUS
     ============================================ */

  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-pill: 25px;
  --radius-full: 50%;

  /* ============================================
     5. SHADOWS
     ============================================ */

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 6px 16px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 12px 24px rgba(0, 0, 0, 0.2);

  /* ============================================
     6. LAYOUT
     ============================================ */

  --max-width: 1200px;
  --gap-column: 24px;

  /* ============================================
     7. TRANSITIONS
     ============================================ */

  --transition-fast: 150ms ease-in-out;
  --transition-normal: 300ms ease-in-out;
  --transition-slow: 500ms ease-in-out;
}

/* ============================================
   8. RESET & BASE STYLES
   ============================================ */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  color: var(--color-text-primary);
  background-color: var(--color-white);
  line-height: var(--lh-comfortable);
  font-size: var(--size-body);
}

a {
  color: var(--color-success);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-success-dark);
}

/* ============================================
   9. TYPOGRAPHY STYLES
   ============================================ */

h1 {
  font-family: var(--font-heading);
  font-size: var(--size-h1);
  font-weight: var(--weight-bold);
  line-height: var(--lh-tight);
  color: var(--color-text-primary);
}

h2 {
  font-family: var(--font-heading);
  font-size: var(--size-h2);
  font-weight: var(--weight-bold);
  line-height: var(--lh-normal);
  color: var(--color-text-primary);
}

h3 {
  font-family: var(--font-heading);
  font-size: var(--size-h3);
  font-weight: var(--weight-semibold);
  line-height: var(--lh-tight);
  color: var(--color-text-primary);
}

h4 {
  font-family: var(--font-secondary);
  font-size: var(--size-h4);
  font-weight: var(--weight-semibold);
  line-height: var(--lh-normal);
  letter-spacing: 1px;
  color: var(--color-text-primary);
}

h5 {
  font-family: var(--font-heading);
  font-size: var(--size-h5);
  font-weight: var(--weight-semibold);
  line-height: var(--lh-normal);
  color: var(--color-text-primary);
}

p {
  margin-bottom: var(--spacing-lg);
  line-height: var(--lh-relaxed);
}

small {
  font-size: var(--size-small);
  color: var(--color-text-secondary);
}

/* ============================================
   10. BUTTON STYLES
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  font-family: var(--font-body);
  font-size: var(--size-ui);
  font-weight: var(--weight-medium);
  border: none;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-decoration: none;
  line-height: 1;
  min-height: 44px;
}

/* Primary Button */
.btn-primary {
  background-color: var(--color-success);
  color: var(--color-white);
  padding: var(--spacing-md) var(--spacing-3xl);
  border-radius: var(--radius-pill);
  box-shadow: none;
}

.btn-primary:hover {
  background-color: var(--color-success-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-primary:focus {
  outline: 2px solid var(--color-success);
  outline-offset: 2px;
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.2);
}

.btn-primary:disabled {
  background-color: var(--color-text-disabled);
  cursor: not-allowed;
  transform: none;
}

/* Secondary Button */
.btn-secondary {
  background-color: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
  padding: calc(var(--spacing-md) - 2px) calc(var(--spacing-3xl) - 2px);
  border-radius: var(--radius-pill);
}

.btn-secondary:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-secondary:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.btn-secondary:active {
  transform: translateY(0);
}

/* Tertiary Button */
.btn-tertiary {
  background-color: transparent;
  color: var(--color-success);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-sm);
}

.btn-tertiary:hover {
  color: var(--color-success-dark);
}

.btn-tertiary:focus {
  outline: 2px solid var(--color-success);
  outline-offset: 2px;
}

/* ============================================
   11. CARD STYLES
   ============================================ */

.card {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  overflow: hidden;
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: scale(1.02);
}

/* Property Card */
.card-property {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.card-property-image {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  position: relative;
}

.card-property-badge {
  position: absolute;
  top: var(--spacing-lg);
  right: var(--spacing-lg);
  background-color: var(--color-success);
  color: var(--color-white);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-pill);
  font-size: var(--size-small);
  font-weight: var(--weight-bold);
}

.card-property-content {
  padding: var(--spacing-xl);
}

.card-property-title {
  font-family: var(--font-heading);
  font-size: var(--size-h3);
  font-weight: var(--weight-semibold);
  margin-bottom: var(--spacing-md);
  color: var(--color-text-primary);
}

.card-property-price {
  font-family: var(--font-heading);
  font-size: var(--size-h5);
  font-weight: var(--weight-bold);
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
}

.card-property-details {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
  font-size: var(--size-small);
  color: var(--color-text-secondary);
}

.card-property-actions {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

/* ============================================
   12. FORM STYLES
   ============================================ */

.form-group {
  margin-bottom: var(--spacing-xl);
}

label {
  display: block;
  font-family: var(--font-body);
  font-size: var(--size-small);
  font-weight: var(--weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-md);
}

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="date"],
textarea,
select {
  width: 100%;
  padding: var(--spacing-md) var(--spacing-lg);
  font-family: var(--font-body);
  font-size: var(--size-body);
  color: var(--color-text-primary);
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: all var(--transition-normal);
}

input[type="text"]::placeholder,
input[type="email"]::placeholder,
input[type="tel"]::placeholder,
textarea::placeholder {
  color: var(--color-placeholder);
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="tel"]:focus,
input[type="date"]:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(112, 41, 99, 0.1);
}

textarea {
  resize: vertical;
  min-height: 120px;
}

select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23702963' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--spacing-lg) center;
  padding-right: var(--spacing-3xl);
}

/* ============================================
   13. NAVIGATION STYLES
   ============================================ */

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-white);
  border-bottom: 1px solid #eee;
  padding: var(--spacing-lg) var(--spacing-xl);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  margin: 0 auto;
  gap: var(--spacing-2xl);
}

.nav-logo {
  font-family: var(--font-heading);
  font-size: var(--size-h5);
  font-weight: var(--weight-bold);
  color: var(--color-primary);
  text-decoration: none;
}

.nav-items {
  display: flex;
  list-style: none;
  gap: var(--spacing-2xl);
  align-items: center;
}

.nav-item a {
  font-family: var(--font-body);
  font-size: var(--size-body);
  color: var(--color-text-primary);
  position: relative;
}

.nav-item a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 3px;
  background-color: var(--color-success);
  transition: width var(--transition-normal);
}

.nav-item a:hover::after,
.nav-item.active a::after {
  width: 100%;
}

/* ============================================
   14. BADGE STYLES
   ============================================ */

.badge {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--size-small);
  font-weight: var(--weight-medium);
  border-radius: var(--radius-pill);
  text-decoration: none;
}

/* Location Badge */
.badge-location {
  background-color: var(--color-light-bg);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
}

/* Price Badge */
.badge-price {
  background-color: var(--color-primary);
  color: var(--color-white);
  font-family: var(--font-heading);
  font-weight: var(--weight-bold);
  border-radius: var(--radius-sm);
  padding: var(--spacing-md) var(--spacing-lg);
  font-size: var(--size-ui);
}

/* Status Badges */
.badge-available {
  background-color: var(--color-success);
  color: var(--color-white);
}

.badge-sold {
  background-color: var(--color-text-secondary);
  color: var(--color-white);
}

.badge-pending {
  background-color: var(--color-secondary);
  color: var(--color-white);
}

/* ============================================
   15. CONTAINER & SECTION STYLES
   ============================================ */

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

.section {
  padding: var(--spacing-6xl) var(--spacing-xl);
}

.section:nth-child(even) {
  background-color: var(--color-light-bg);
}

.section-dark {
  background-color: var(--color-dark-bg);
  color: var(--color-white);
}

.section-dark h2,
.section-dark h3,
.section-dark p {
  color: var(--color-white);
}

.section-dark a {
  color: var(--color-success-light);
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--color-secondary) 0%, #FFB84D 100%);
  color: var(--color-white);
  padding: var(--spacing-6xl) var(--spacing-xl);
  text-align: center;
  min-height: 400px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-2xl);
}

.hero h1 {
  color: var(--color-white);
  font-size: var(--size-h1);
}

/* ============================================
   16. GRID STYLES
   ============================================ */

.grid {
  display: grid;
  gap: var(--gap-column);
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* ============================================
   17. UTILITY CLASSES
   ============================================ */

/* Margins */
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }
.mt-2xl { margin-top: var(--spacing-2xl); }
.mt-3xl { margin-top: var(--spacing-3xl); }
.mt-6xl { margin-top: var(--spacing-6xl); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }
.mb-2xl { margin-bottom: var(--spacing-2xl); }
.mb-3xl { margin-bottom: var(--spacing-3xl); }
.mb-6xl { margin-bottom: var(--spacing-6xl); }

/* Padding */
.p-lg { padding: var(--spacing-lg); }
.p-xl { padding: var(--spacing-xl); }
.p-2xl { padding: var(--spacing-2xl); }
.p-3xl { padding: var(--spacing-3xl); }
.p-6xl { padding: var(--spacing-6xl); }

/* Text Alignment */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

/* Text Colors */
.text-primary { color: var(--color-text-primary); }
.text-secondary { color: var(--color-text-secondary); }
.text-success { color: var(--color-success); }
.text-white { color: var(--color-white); }

/* Background Colors */
.bg-white { background-color: var(--color-white); }
.bg-light { background-color: var(--color-light-bg); }
.bg-dark { background-color: var(--color-dark-bg); }
.bg-primary { background-color: var(--color-primary); }
.bg-success { background-color: var(--color-success); }

/* Display */
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-column { flex-direction: column; }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }
.gap-xl { gap: var(--spacing-xl); }

/* Visibility */
.hidden { display: none; }
.visible { display: block; }

/* ============================================
   18. RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 768px) {
  :root {
    --size-h1: 32px;
    --size-h2: 28px;
    --size-h3: 24px;
    --size-h4: 20px;
  }

  .section {
    padding: var(--spacing-3xl) var(--spacing-lg);
  }

  .hero {
    min-height: 300px;
    padding: var(--spacing-3xl) var(--spacing-lg);
  }

  .container {
    padding: 0 var(--spacing-lg);
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .nav-items {
    gap: var(--spacing-lg);
  }

  .card-property-actions {
    flex-direction: column;
  }

  .card-property-actions .btn {
    width: 100%;
  }
}

@media (max-width: 375px) {
  :root {
    --size-h1: 28px;
    --size-h2: 24px;
    --size-h3: 20px;
    --spacing-xl: 16px;
    --spacing-2xl: 20px;
  }

  .section {
    padding: var(--spacing-3xl) var(--spacing-md);
  }

  .container {
    padding: 0 var(--spacing-md);
  }

  .nav {
    flex-direction: column;
    gap: var(--spacing-lg);
  }

  .nav-items {
    flex-direction: column;
    width: 100%;
  }
}

/* ============================================
   19. PRINT STYLES
   ============================================ */

@media print {
  body {
    background-color: white;
    color: black;
  }

  a {
    color: var(--color-primary);
  }

  .no-print {
    display: none;
  }
}