:root {
  /* Colors */
  --color-rausch-coral: #ff385c;
  --color-rausch-deep: #e00b41;
  --color-carbon: #222222;
  --color-slate: #6a6a6a;
  --color-silver: #c1c1c1;
  --color-stone: #b0b0b0;
  --color-pebble: #dddddd;
  --color-mist: #ebebeb;
  --color-fog: #f7f7f7;
  --color-cloud: #ffffff;

  /* Typography — Font Families */
  --font-family: 'Inter', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  /* Typography — Scale */
  --text-caption: 11px;
  --leading-caption: 1.29;
  --tracking-caption: 0.44px;
  --text-body: 14px;
  --leading-body: 1.43;
  --tracking-body: -0.13px;
  --text-heading-sm: 20px;
  --leading-heading-sm: 1.25;
  --tracking-heading-sm: -0.18px;
  --text-heading: 22px;
  --leading-heading: 1.23;
  --tracking-heading: -0.2px;
  --text-display: 28px;
  --leading-display: 1.18;
  --tracking-display: -0.56px;

  /* Typography — Weights */
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* Spacing */
  --spacing-4: 4px;
  --spacing-6: 6px;
  --spacing-8: 8px;
  --spacing-10: 10px;
  --spacing-11: 11px;
  --spacing-12: 12px;
  --spacing-13: 13px;
  --spacing-15: 15px;
  --spacing-16: 16px;
  --spacing-20: 20px;
  --spacing-24: 24px;
  --spacing-28: 28px;
  --spacing-32: 32px;
  --spacing-40: 40px;
  --spacing-44: 44px;
  --spacing-48: 48px;

  /* Layout */
  --page-max-width: 1760px;
  --section-gap: 48px;
  --card-padding: 12px;
  --element-gap: 8px;

  /* Border Radius */
  --radius-sm: 1.5px;
  --radius-md: 4px;
  --radius-lg: 8px;
  --radius-xl: 14px;
  --radius-2xl: 20px;
  --radius-3xl: 32px;
  --radius-full: 50px;
  --radius-full-2: 100px;

  /* Named Radii */
  --radius-cards: 20px;
  --radius-pills: 32px;
  --radius-badges: 4px;
  --radius-inputs: 14px;
  --radius-buttons: 8px;
  --radius-searchbar: 20px;
  --radius-iconbuttons: 50%;

  /* Shadows */
  --shadow-subtle: rgba(0, 0, 0, 0.02) 0px 0px 0px 1px, rgba(0, 0, 0, 0.04) 0px 2px 6px 0px, rgba(0, 0, 0, 0.1) 0px 4px 8px 0px;
  --shadow-subtle-2: rgba(0, 0, 0, 0.02) 0px 0px 0px 1px, rgba(0, 0, 0, 0.16) 0px 2px 4px 0px;

  /* Surfaces */
  --surface-canvas: #f7f7f7;
  --surface-card-header: #ffffff;
  --surface-placeholder: #dddddd;
  --surface-loader: #b0b0b0;
}

[data-theme="dark"] {
  --color-carbon: #ffffff;
  --color-fog: #121212;
  --color-cloud: #1e1e1e;
  --color-pebble: #333333;
  --color-mist: #2c2c2c;
  --color-slate: #a0a0a0;
  --shadow-subtle: 0 4px 12px rgba(0,0,0,0.5);
  --surface-canvas: #121212;
  --surface-card-header: #1e1e1e;
}

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

body {
  font-family: var(--font-family);
  font-feature-settings: "salt";
  background-color: var(--color-fog);
  color: var(--color-carbon);
  line-height: var(--leading-body);
  letter-spacing: var(--tracking-body);
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.3s, color 0.3s;
}

a {
  text-decoration: none;
  color: var(--color-carbon);
}

.global-header {
  background-color: var(--surface-card-header);
  height: 80px;
  border-bottom: 1px solid var(--color-mist);
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  transition: background-color 0.3s, border-color 0.3s;
}

.header-container {
  width: 100%;
  max-width: var(--page-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-24);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-8);
  font-weight: var(--font-weight-bold);
  font-size: var(--text-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-rausch-coral);
}

.logo-mark {
  width: 12px;
  height: 12px;
  background-color: var(--color-rausch-coral);
  border-radius: 50%;
  display: inline-block;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-24);
}

.theme-toggle {
  background: none;
  border: none;
  font-size: 1.2rem;
  cursor: pointer;
  color: var(--color-carbon);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-8);
  border-radius: var(--radius-iconbuttons);
  transition: background-color 0.2s;
}

.theme-toggle:hover {
  background-color: var(--color-fog);
}

.nav-link {
  font-size: var(--text-body);
  font-weight: var(--font-weight-semibold);
  color: var(--color-carbon);
  padding: var(--spacing-8) 0;
}

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

.btn-ghost {
  font-size: var(--text-body);
  font-weight: var(--font-weight-semibold);
  padding: 10px 16px;
  border-radius: var(--radius-buttons);
  transition: background-color 0.2s;
}

.btn-ghost:hover {
  background-color: var(--color-fog);
}

/* Mobile Nav Toggle Icon */
.mobile-nav-toggle {
  display: none;
  background: none;
  border: none;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 18px;
  cursor: pointer;
  z-index: 110;
  padding: 0;
}

.mobile-nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-carbon);
  border-radius: var(--radius-sm);
  transition: transform 0.3s ease, opacity 0.3s ease;
}

@media (max-width: 768px) {
  .mobile-nav-toggle {
    display: flex;
  }

  .mobile-nav-toggle.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }

  .mobile-nav-toggle.active span:nth-child(2) {
    opacity: 0;
  }

  .mobile-nav-toggle.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }

  .header-nav {
    position: fixed;
    top: 80px;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--surface-card-header);
    flex-direction: column;
    justify-content: flex-start;
    padding: var(--spacing-40) var(--spacing-24);
    gap: var(--spacing-24);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.35s ease;
    z-index: 99;
    border-top: 1px solid var(--color-mist);
  }

  .header-nav.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .header-nav .nav-link {
    font-size: 18px;
    width: 100%;
    text-align: center;
    padding: var(--spacing-12) 0;
    border-bottom: 1px solid var(--color-mist);
  }

  .header-nav #btn-sumar-propiedad {
    width: 100%;
    text-align: center;
    padding: var(--spacing-16);
    background-color: var(--color-fog);
    font-size: 16px;
  }
  
  .header-nav .theme-toggle {
    font-size: 24px;
    margin-top: auto;
    padding: var(--spacing-16);
  }
}

.page-container {
  max-width: var(--page-max-width);
  margin: 0 auto;
  padding: var(--spacing-48) var(--spacing-24);
}

.hero-section {
  text-align: center;
  margin-bottom: 64px;
}

.display-title {
  font-size: 48px;
  font-weight: var(--font-weight-bold);
  line-height: 1.1;
  letter-spacing: var(--tracking-display);
  margin-bottom: var(--spacing-16);
}

.hero-subtitle {
  font-size: 16px;
  color: var(--color-slate);
  max-width: 600px;
  margin: 0 auto var(--spacing-40);
}

.search-pill-container {
  background-color: var(--surface-card-header);
  border-radius: var(--radius-searchbar);
  box-shadow: var(--shadow-subtle);
  max-width: 950px;
  margin: 0 auto;
  overflow: hidden;
  transition: background-color 0.3s, box-shadow 0.3s;
}

@media (max-width: 768px) {
  .search-pill-container {
    width: 100%;
    border-radius: var(--radius-xl);
    margin: 0;
  }
}

.tabs-switcher {
  display: flex;
  background-color: var(--color-fog);
  padding: var(--spacing-8);
  gap: var(--spacing-8);
  justify-content: center;
  transition: background-color 0.3s;
  overflow-x: auto;
  white-space: nowrap;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.tabs-switcher::-webkit-scrollbar {
  display: none;
}

.tab-btn {
  background: transparent;
  border: none;
  padding: 10px 24px;
  border-radius: var(--radius-pills);
  font-size: var(--text-body);
  font-weight: var(--font-weight-semibold);
  color: var(--color-slate);
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
  flex-shrink: 0;
}

.tab-btn:hover {
  color: var(--color-carbon);
}

.tab-btn.active {
  background-color: var(--surface-card-header);
  color: var(--color-carbon);
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.form-wrapper {
  padding: var(--spacing-24) var(--spacing-32);
}

.form-grid {
  display: none;
  grid-template-columns: 1fr 1fr 1fr auto;
  gap: var(--spacing-16);
  align-items: end;
}

.form-grid.active {
  display: grid;
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-8);
  position: relative;
}

.flex-row {
  display: flex;
  gap: var(--spacing-8);
  width: 100%;
}

.flex-row > * {
  flex: 1;
  min-width: 0;
}

.input-group label {
  font-size: 12px;
  font-weight: var(--font-weight-semibold);
  padding-left: var(--spacing-12);
  color: var(--color-carbon);
}

input, select {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--color-pebble);
  border-radius: var(--radius-inputs);
  font-family: inherit;
  font-size: var(--text-body);
  color: var(--color-carbon);
  background-color: var(--surface-card-header);
  transition: border-color 0.2s, box-shadow 0.2s, background-color 0.3s, color 0.3s;
}

input:focus, select:focus {
  outline: none;
  border-color: var(--color-carbon);
  box-shadow: 0 0 0 2px var(--color-carbon);
}

select {
  appearance: none;
  cursor: pointer;
  background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236a6a6a' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 16px;
  padding-right: 36px;
}

.btn-search {
  background-color: var(--color-rausch-coral);
  color: #ffffff;
  border: none;
  height: 48px;
  padding: 0 var(--spacing-24);
  border-radius: var(--radius-pills);
  font-family: inherit;
  font-size: var(--text-body);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: var(--spacing-8);
  transition: background-color 0.2s;
}

.btn-search:hover {
  background-color: var(--color-rausch-deep);
}

.cards-section {
  margin-top: var(--spacing-48);
}

.section-header {
  margin-bottom: var(--spacing-24);
}

.section-header h2 {
  font-size: var(--text-heading);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--tracking-heading);
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-24);
}

.listing-card {
  background-color: var(--surface-card-header);
  border-radius: var(--radius-cards);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background-color 0.3s;
}

.listing-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-subtle-2);
}

.card-image-container {
  position: relative;
  width: 100%;
  aspect-ratio: 4/3;
  overflow: hidden;
  background-color: var(--color-pebble);
}

.card-image-placeholder {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.3s ease;
}

.listing-card:hover .card-image-placeholder {
  transform: scale(1.05);
}

.card-badge {
  position: absolute;
  top: var(--spacing-12);
  left: var(--spacing-12);
  background-color: var(--color-cloud);
  color: var(--color-carbon);
  font-size: var(--text-caption);
  font-weight: var(--font-weight-bold);
  padding: var(--spacing-6) var(--spacing-10);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-subtle-2);
  z-index: 10;
  letter-spacing: var(--tracking-caption);
  text-transform: uppercase;
}

.card-content {
  padding: var(--spacing-16);
}

.card-content h3 {
  font-size: 16px;
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-4);
}

.card-meta {
  font-size: var(--text-body);
  color: var(--color-slate);
  margin-bottom: var(--spacing-8);
}

.card-desc {
  font-size: var(--text-body);
  color: var(--color-carbon);
}

/* Premium Footer */
.global-footer {
  background-color: var(--color-fog);
  border-top: 1px solid var(--color-mist);
  padding: var(--spacing-48) var(--spacing-24) var(--spacing-24);
  margin-top: var(--spacing-48);
  transition: background-color 0.3s, border-color 0.3s;
}

.footer-container {
  max-width: var(--page-max-width);
  margin: 0 auto;
}

.footer-sections {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-32);
  margin-bottom: var(--spacing-40);
}

.footer-column h3 {
  font-size: var(--text-body);
  font-weight: var(--font-weight-semibold);
  color: var(--color-carbon);
  margin-bottom: var(--spacing-16);
}

.footer-column ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-column li {
  margin-bottom: var(--spacing-12);
}

.footer-column a {
  font-size: var(--text-body);
  color: var(--color-slate);
  transition: color 0.2s;
}

.footer-column a:hover {
  color: var(--color-carbon);
  text-decoration: underline;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--color-mist);
  padding-top: var(--spacing-24);
  flex-wrap: wrap;
  gap: var(--spacing-16);
}

.footer-info {
  display: flex;
  align-items: center;
  gap: var(--spacing-8);
  flex-wrap: wrap;
  font-size: var(--text-body);
  color: var(--color-slate);
}

.footer-info a {
  color: var(--color-slate);
}

.footer-info a:hover {
  color: var(--color-carbon);
  text-decoration: underline;
}

.footer-socials {
  display: flex;
  gap: var(--spacing-16);
  font-size: var(--text-body);
  font-weight: var(--font-weight-semibold);
}

.footer-socials a {
  color: var(--color-carbon);
}

@media (max-width: 900px) {
  .form-grid.active {
    grid-template-columns: 1fr;
    align-items: stretch;
  }
  .flex-row {
    flex-direction: column;
    gap: 12px;
  }
  .form-wrapper {
    padding: var(--spacing-20);
  }
  .btn-search {
    margin-top: 12px;
    justify-content: center;
    width: 100%;
    height: 50px;
  }
  .display-title {
    font-size: 36px;
  }
  .global-footer {
    padding-top: var(--spacing-32);
  }
}