/* CSS Variables */
:root {
  /* Colors */
  --primary: #0ea5e9;
  --primary-600: #0284c7;
  --accent: #22c55e;
  --ink: #0f172a;
  --muted: #64748b;
  --line: #e2e8f0;
  --bg: #ffffff;
  --bg-soft: #f8fafc;
  --warning: #f59e0b;
  --error: #ef4444;

  /* Spacing Scale */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;

  /* Typography */
  --font-system: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;

  /* Borders */
  --radius: 16px;
  --radius-sm: 8px;
  --radius-lg: 24px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);

  /* Transitions */
  --transition: all 0.15s ease;
  --transition-slow: all 0.3s ease;
}

/* Dark Mode */
@media (prefers-color-scheme: dark) {
  :root {
    --ink: #f1f5f9;
    --muted: #94a3b8;
    --line: #334155;
    --bg: #020617;
    --bg-soft: #0f172a;
  }
}

/* Reset & Base Styles */
*,
*::before,
*::after {
  box-sizing: border-box;
}

* {
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-system);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--ink);
  background-color: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
}

input,
button,
textarea,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

a {
  color: inherit;
  text-decoration: none;
}

ul,
ol {
  list-style: none;
}

/* Screen Reader Only */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Skip Link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 6px;
  background: var(--primary);
  color: white;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-weight: 600;
  z-index: 1000;
  transition: var(--transition);
}

.skip-link:focus {
  top: 6px;
}

/* Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--ink);
}

h1 {
  font-size: clamp(var(--font-size-3xl), 4vw, var(--font-size-5xl));
}

h2 {
  font-size: clamp(var(--font-size-2xl), 3vw, var(--font-size-4xl));
  margin-bottom: var(--space-4);
}

h3 {
  font-size: clamp(var(--font-size-xl), 2vw, var(--font-size-2xl));
  margin-bottom: var(--space-3);
}

.lead {
  font-size: var(--font-size-lg);
  font-weight: 500;
  color: var(--muted);
  margin-bottom: var(--space-6);
}

.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--muted);
  margin-bottom: var(--space-8);
  text-align: center;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-size: var(--font-size-base);
  font-weight: 600;
  text-align: center;
  text-decoration: none;
  white-space: nowrap;
  transition: var(--transition);
  cursor: pointer;
  background: transparent;
  min-height: 44px;
  position: relative;
  overflow: hidden;
}

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

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
}

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

.btn-primary:hover {
  background-color: var(--primary-600);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  border-color: var(--line);
  color: var(--ink);
  background-color: var(--bg);
}

.btn-outline:hover {
  background-color: var(--bg-soft);
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-1px);
}

.btn-accent {
  background-color: var(--accent);
  color: white;
  border-color: var(--accent);
}

.btn-accent:hover {
  background-color: #16a34a;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--font-size-lg);
}

.btn-full {
  width: 100%;
}

/* Form Elements */
.input,
.select,
.textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: var(--font-size-base);
  background-color: var(--bg);
  color: var(--ink);
  transition: var(--transition);
}

.input:focus,
.select:focus,
.textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgb(14 165 233 / 0.1);
}

.input::placeholder,
.textarea::placeholder {
  color: var(--muted);
}

.select {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
  background-position: right var(--space-3) center;
  background-repeat: no-repeat;
  background-size: 16px 12px;
  padding-right: var(--space-10);
  appearance: none;
}

.select-sm {
  padding: var(--space-2) var(--space-8) var(--space-2) var(--space-3);
  font-size: var(--font-size-sm);
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.input-group label {
  font-weight: 500;
  color: var(--ink);
}

/* Header */
.header {
  position: sticky;
  top: 0;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
  z-index: 100;
  transition: var(--transition-slow);
}

@media (prefers-color-scheme: dark) {
  .header {
    background-color: rgba(2, 6, 23, 0.95);
  }
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--ink);
}

.logo-text {
  color: var(--primary);
}

.nav {
  display: none;
}

.nav-list {
  display: flex;
  gap: var(--space-8);
}

.nav-link {
  font-weight: 500;
  color: var(--ink);
  transition: var(--transition);
  position: relative;
}

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

.nav-link::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary);
  transition: var(--transition);
}

.nav-link:hover::after {
  width: 100%;
}

.header-cta {
  display: none;
}

.mobile-menu-toggle {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  width: 24px;
  height: 18px;
  background: none;
  border: none;
  cursor: pointer;
}

.mobile-menu-toggle span {
  width: 100%;
  height: 2px;
  background-color: var(--ink);
  transition: var(--transition);
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--bg-soft) 0%, rgba(14, 165, 233, 0.05) 100%);
  padding: var(--space-20) 0;
}

.hero-content {
  text-align: center;
}

.hero-title {
  margin-bottom: var(--space-6);
  background: linear-gradient(135deg, var(--ink) 0%, var(--primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: var(--font-size-lg);
  color: var(--muted);
  margin-bottom: var(--space-10);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* Search Form */
.search-form {
  background: white;
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  max-width: 800px;
  margin: 0 auto;
}

@media (prefers-color-scheme: dark) {
  .search-form {
    background: var(--bg-soft);
    border: 1px solid var(--line);
  }
}

.search-grid {
  display: grid;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.search-btn {
  grid-column: 1 / -1;
}

/* Filter Bar */
.filter-bar {
  position: sticky;
  top: 72px;
  background-color: var(--bg);
  border-bottom: 1px solid var(--line);
  padding: var(--space-4) 0;
  z-index: 90;
}

.filter-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.filter-groups {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.filter-group {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.filter-label {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--muted);
  white-space: nowrap;
}

.filter-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.results-count {
  font-size: var(--font-size-sm);
  color: var(--muted);
}

/* Properties Section */
.properties {
  padding: var(--space-12) 0;
}

.properties-grid {
  display: grid;
  gap: var(--space-6);
  margin-bottom: var(--space-12);
}

.property-card {
  background: white;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  cursor: pointer;
}

@media (prefers-color-scheme: dark) {
  .property-card {
    background: var(--bg-soft);
    border: 1px solid var(--line);
  }
}

.property-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
}

.property-image {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

.property-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-slow);
  background-color: var(--bg-soft);
  background-image: linear-gradient(45deg, #f0f0f0 25%, transparent 25%), linear-gradient(-45deg, #f0f0f0 25%, transparent 25%), linear-gradient(45deg, transparent 75%, #f0f0f0 75%), linear-gradient(-45deg, transparent 75%, #f0f0f0 75%);
  background-size: 20px 20px;
  background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
}

.property-image img[src=""],
.property-image img:not([src]),
.property-image img[src*="placeholder"] {
  background-color: var(--bg-soft);
  background-image: linear-gradient(45deg, #e2e8f0 25%, transparent 25%), linear-gradient(-45deg, #e2e8f0 25%, transparent 25%), linear-gradient(45deg, transparent 75%, #e2e8f0 75%), linear-gradient(-45deg, transparent 75%, #e2e8f0 75%);
  background-size: 20px 20px;
  background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-size: var(--font-size-sm);
}

.property-image img[src=""]::after,
.property-image img:not([src])::after,
.property-image img[src*="placeholder"]::after {
  content: "📷 Foto Properti";
}

.property-card:hover .property-image img {
  transform: scale(1.05);
}

.property-badge {
  position: absolute;
  top: var(--space-3);
  left: var(--space-3);
  padding: var(--space-1) var(--space-3);
  background-color: var(--primary);
  color: white;
  font-size: var(--font-size-xs);
  font-weight: 600;
  border-radius: var(--radius-sm);
}

.property-content {
  padding: var(--space-5);
}

.property-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--space-2);
  color: var(--ink);
}

.property-location {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--font-size-sm);
  color: var(--muted);
  margin-bottom: var(--space-4);
}

.property-price {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--primary);
  margin-bottom: var(--space-4);
}

.property-specs {
  display: flex;
  gap: var(--space-4);
  margin-bottom: var(--space-5);
}

.spec-item {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--font-size-sm);
  color: var(--muted);
}

.property-cta {
  width: 100%;
}

/* Load More */
.load-more {
  text-align: center;
  margin-top: var(--space-8);
}

.load-more .btn {
  min-width: 200px;
}

/* About Section */
.about {
  padding: var(--space-20) 0;
  background-color: var(--bg-soft);
}

.about-content {
  display: grid;
  gap: var(--space-12);
  text-align: center;
}

.about-text {
  max-width: 600px;
  margin: 0 auto;
}

.values-grid {
  display: grid;
  gap: var(--space-6);
}

.value-card {
  background: white;
  padding: var(--space-6);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  text-align: center;
  transition: var(--transition);
}

@media (prefers-color-scheme: dark) {
  .value-card {
    background: var(--bg);
    border: 1px solid var(--line);
  }
}

.value-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.value-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background-color: rgba(14, 165, 233, 0.1);
  color: var(--primary);
  border-radius: var(--radius);
  margin-bottom: var(--space-4);
}

/* KPR Calculator */
.kpr-calculator {
  padding: var(--space-20) 0;
  text-align: center;
}

.calculator-content {
  display: grid;
  gap: var(--space-8);
  max-width: 800px;
  margin: 0 auto;
}

.calculator-form {
  background: white;
  padding: var(--space-8);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

@media (prefers-color-scheme: dark) {
  .calculator-form {
    background: var(--bg-soft);
    border: 1px solid var(--line);
  }
}

.calculator-inputs {
  display: grid;
  gap: var(--space-5);
  margin-bottom: var(--space-6);
}

.calculator-results {
  background: var(--bg-soft);
  padding: var(--space-6);
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

@media (prefers-color-scheme: dark) {
  .calculator-results {
    background: var(--bg);
  }
}

.results-grid {
  display: grid;
  gap: var(--space-4);
  margin-top: var(--space-4);
}

.result-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-3);
  background: white;
  border-radius: var(--radius-sm);
}

@media (prefers-color-scheme: dark) {
  .result-item {
    background: var(--bg-soft);
  }
}

.result-label {
  font-weight: 500;
  color: var(--muted);
}

.result-value {
  font-weight: 600;
  color: var(--ink);
}

.result-value.highlight {
  color: var(--primary);
  font-size: var(--font-size-lg);
}

/* Testimonials */
.testimonials {
  padding: var(--space-20) 0;
  background-color: var(--bg-soft);
  text-align: center;
}

.testimonials-carousel {
  position: relative;
  max-width: 600px;
  margin: 0 auto;
}

.testimonials-track {
  display: flex;
  transition: transform 0.3s ease;
}

.testimonial-card {
  flex: 0 0 100%;
  background: white;
  padding: var(--space-8);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

@media (prefers-color-scheme: dark) {
  .testimonial-card {
    background: var(--bg);
    border: 1px solid var(--line);
  }
}

.testimonial-rating {
  margin-bottom: var(--space-4);
}

.stars {
  color: var(--warning);
  font-size: var(--font-size-lg);
}

.testimonial-text {
  font-size: var(--font-size-lg);
  line-height: 1.7;
  margin-bottom: var(--space-6);
  color: var(--ink);
}

.testimonial-author {
  text-align: center;
}

.testimonial-author strong {
  display: block;
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-1);
}

.testimonial-author span {
  color: var(--muted);
  font-size: var(--font-size-sm);
}

.carousel-controls {
  display: flex;
  justify-content: center;
  gap: var(--space-4);
  margin-top: var(--space-6);
}

.carousel-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: white;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--muted);
  transition: var(--transition);
}

@media (prefers-color-scheme: dark) {
  .carousel-btn {
    background: var(--bg);
  }
}

.carousel-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: scale(1.1);
}

/* FAQ */
.faq {
  padding: var(--space-20) 0;
  text-align: center;
}

.faq-list {
  max-width: 700px;
  margin: 0 auto;
  text-align: left;
}

.faq-item {
  border-bottom: 1px solid var(--line);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-6) 0;
  background: none;
  border: none;
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--ink);
  text-align: left;
  cursor: pointer;
  transition: var(--transition);
}

.faq-question:hover {
  color: var(--primary);
}

.faq-icon {
  transition: var(--transition);
  color: var(--muted);
}

.faq-question[aria-expanded="true"] .faq-icon {
  transform: rotate(180deg);
  color: var(--primary);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-answer p {
  padding-bottom: var(--space-6);
  color: var(--muted);
  line-height: 1.7;
}

/* CTA Section */
.cta-section {
  padding: var(--space-20) 0;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-600) 100%);
  color: white;
  text-align: center;
}

.cta-content h2 {
  color: white;
  margin-bottom: var(--space-4);
}

.cta-content p {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-8);
  opacity: 0.9;
}

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

.cta-section .btn-primary:hover {
  background-color: var(--bg-soft);
  transform: translateY(-2px);
}

/* Contact Section */
.contact {
  padding: var(--space-20) 0;
}

.contact-content {
  display: grid;
  gap: var(--space-12);
}

.contact-details {
  display: grid;
  gap: var(--space-6);
}

.contact-item {
  display: flex;
  gap: var(--space-4);
}

.contact-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: rgba(14, 165, 233, 0.1);
  color: var(--primary);
  border-radius: var(--radius);
  flex-shrink: 0;
}

.quick-contact {
  display: flex;
  gap: var(--space-4);
  margin-top: var(--space-6);
}

.contact-form-wrapper {
  background: white;
  padding: var(--space-8);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

@media (prefers-color-scheme: dark) {
  .contact-form-wrapper {
    background: var(--bg-soft);
    border: 1px solid var(--line);
  }
}

.form-grid {
  display: grid;
  gap: var(--space-5);
  margin-bottom: var(--space-6);
}

.form-success {
  display: none;
  text-align: center;
  padding: var(--space-8);
}

.form-success.show {
  display: block;
}

.success-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background-color: rgba(34, 197, 94, 0.1);
  color: var(--accent);
  border-radius: 50%;
  margin-bottom: var(--space-4);
}

/* Footer */
.footer {
  background-color: #1e293b;
  color: white;
  padding: var(--space-16) 0 var(--space-8);
}

@media (prefers-color-scheme: dark) {
  .footer {
    background-color: #0f172a;
    color: #f1f5f9;
  }

  .footer-tagline {
    color: #38bdf8;
  }

  .footer-description {
    color: #cbd5e1;
  }

  .footer-section h4 {
    color: #f1f5f9;
  }

  .footer-section a {
    color: #cbd5e1;
  }

  .footer-section a:hover {
    color: #38bdf8;
  }

  .footer-copyright {
    color: #94a3b8;
  }
}

.footer-content {
  display: grid;
  gap: var(--space-12);
}

.footer-main {
  display: grid;
  gap: var(--space-8);
}

.footer-brand .logo {
  color: white;
  margin-bottom: var(--space-4);
}

.footer-tagline {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--space-2);
  color: #38bdf8;
}

.footer-description {
  color: #cbd5e1;
  line-height: 1.7;
}

.footer-links {
  display: grid;
  gap: var(--space-8);
}

.footer-section h4 {
  color: #f1f5f9;
  margin-bottom: var(--space-4);
  font-weight: 600;
}

.footer-section ul {
  display: grid;
  gap: var(--space-2);
}

.footer-section a {
  color: #cbd5e1;
  transition: var(--transition);
}

.footer-section a:hover {
  color: #38bdf8;
}

.footer-bottom {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
  padding-top: var(--space-8);
  border-top: 1px solid #334155;
}

.footer-social {
  display: flex;
  gap: var(--space-4);
}

.footer-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: #334155;
  color: #cbd5e1;
  border-radius: var(--radius);
  transition: var(--transition);
}

.footer-social a:hover {
  background-color: #0ea5e9;
  color: white;
  transform: translateY(-2px);
}

.footer-copyright {
  font-size: var(--font-size-sm);
  color: #94a3b8;
  text-align: center;
}

/* Modal */
.modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}

.modal.show {
  opacity: 1;
  visibility: visible;
}

.modal-overlay {
  position: absolute;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
}

.modal-content {
  position: relative;
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 90%;
  max-width: 800px;
  max-height: 90vh;
  overflow: hidden;
  transform: scale(0.9);
  transition: var(--transition);
}

@media (prefers-color-scheme: dark) {
  .modal-content {
    background: var(--bg-soft);
    border: 1px solid var(--line);
  }
}

.modal.show .modal-content {
  transform: scale(1);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-6);
  border-bottom: 1px solid var(--line);
}

.modal-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: none;
  border: none;
  color: var(--muted);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.modal-close:hover {
  background-color: var(--bg-soft);
  color: var(--ink);
}

.modal-body {
  padding: var(--space-6);
  max-height: calc(90vh - 120px);
  overflow-y: auto;
}

/* Property Detail */
.property-detail {
  display: grid;
  gap: var(--space-6);
}

.property-gallery {
  aspect-ratio: 16 / 10;
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
}

.property-gallery img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.property-gallery img[src=""],
.property-gallery img:not([src]) {
  display: none;
}

.property-gallery .placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-soft);
  color: var(--muted);
  font-size: var(--font-size-sm);
  height: 100%;
  position: absolute;
  inset: 0;
}

.property-info {
  display: grid;
  gap: var(--space-6);
}

.property-header {
  display: grid;
  gap: var(--space-3);
}

.property-features {
  display: grid;
  gap: var(--space-2);
}

.property-features li {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--muted);
}

.property-features li::before {
  content: "✓";
  color: var(--accent);
  font-weight: bold;
}

.property-specs-detail {
  background: var(--bg-soft);
  padding: var(--space-5);
  border-radius: var(--radius);
}

@media (prefers-color-scheme: dark) {
  .property-specs-detail {
    background: var(--bg);
  }
}

.specs-grid {
  display: grid;
  gap: var(--space-3);
}

.spec-row {
  display: flex;
  justify-content: space-between;
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--line);
}

.spec-row:last-child {
  border-bottom: none;
}

.modal-actions {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

/* Back to Top */
.back-to-top {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  width: 48px;
  height: 48px;
  background-color: var(--primary);
  color: white;
  border: none;
  border-radius: 50%;
  box-shadow: var(--shadow-lg);
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background-color: var(--primary-600);
  transform: translateY(-2px);
}

/* Responsive Design */
@media (min-width: 640px) {
  .container {
    padding: 0 var(--space-6);
  }

  .search-grid {
    grid-template-columns: 1fr 1fr;
  }

  .search-btn {
    grid-column: 1 / -1;
  }

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

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

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

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

  .contact-content {
    grid-template-columns: 1fr 1fr;
  }

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

  .footer-main {
    grid-template-columns: 1fr 2fr;
  }

  .footer-links {
    grid-template-columns: repeat(3, 1fr);
  }

  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
  }
}

@media (min-width: 768px) {
  .nav {
    display: block;
  }

  .header-cta {
    display: inline-flex;
  }

  .mobile-menu-toggle {
    display: none;
  }

  .search-grid {
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr auto;
    align-items: end;
  }

  .search-btn {
    grid-column: auto;
  }

  .filter-content {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }

  .properties-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .values-grid {
    grid-template-columns: repeat(4, 1fr);
  }

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

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

@media (min-width: 1024px) {
  .container {
    padding: 0 var(--space-8);
  }

  .properties-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .calculator-inputs {
    grid-template-columns: repeat(4, 1fr);
  }

  .results-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (min-width: 1280px) {
  .hero {
    padding: var(--space-20) 0 var(--space-16);
  }

  .search-grid {
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr auto;
  }
}

/* Loading States */
.loading {
  opacity: 0.7;
  pointer-events: none;
}

.skeleton {
  background: linear-gradient(90deg, var(--bg-soft) 25%, var(--line) 50%, var(--bg-soft) 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
}

@keyframes skeleton-loading {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

/* Utility Classes */
.hidden {
  display: none !important;
}

.text-center {
  text-align: center;
}

.text-left {
  text-align: left;
}

.text-right {
  text-align: right;
}

.mb-0 {
  margin-bottom: 0 !important;
}

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

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

/* Focus Management */
.modal:focus {
  outline: none;
}

/* Print Styles */
@media print {
  .header,
  .filter-bar,
  .back-to-top,
  .modal {
    display: none !important;
  }

  * {
    color: black !important;
    background: white !important;
    box-shadow: none !important;
  }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
  :root {
    --line: #000000;
    --muted: #000000;
  }

  .btn-outline {
    border-width: 2px;
  }

  .input,
  .select,
  .textarea {
    border-width: 2px;
  }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}