/* 
===============================
REALVISION3D - Main Stylesheet
===============================
*/

/* === Base Styles === */
:root {
  /* Color Palette */
  --color-primary: #d4af37;  /* Gold */
  --color-primary-light: #e5c76b;
  --color-primary-dark: #b39020;
  --color-secondary: #202020;  /* Dark charcoal */
  --color-text: #333333;
  --color-text-light: #777777;
  --color-white: #ffffff;
  --color-light-bg: #f8f8f8;
  --color-border: #e0e0e0;
  
  /* Typography */
  --font-heading: 'Playfair Display', Georgia, serif;
  --font-body: 'Raleway', Helvetica, Arial, sans-serif;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 8rem;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.1);
}

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

html {
  font-size: 62.5%; /* 10px = 1rem */
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 1.6rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-white);
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 500;
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
}

h1 {
  font-size: 4.2rem;
}

h2 {
  font-size: 3.6rem;
}

h3 {
  font-size: 2.4rem;
}

p {
  margin-bottom: var(--spacing-md);
}

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

button {
  cursor: pointer;
  font-family: inherit;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

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

/* === Utility Classes === */
.text-center {
  text-align: center;
}

.hidden {
  display: none !important;
}

/* === Components === */

/* Buttons */
.btn {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 1.4rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1rem;
  padding: 1.2rem 2.4rem;
  border: none;
  border-radius: 0;
  cursor: pointer;
  transition: var(--transition-normal);
}

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

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

.btn-secondary {
  background-color: transparent;
  color: var(--color-white);
  border: 1px solid var(--color-white);
}

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

.btn-outline {
  background-color: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-2px);
}

.btn-text {
  background-color: transparent;
  color: var(--color-primary);
  padding: 0;
  border: none;
  text-transform: none;
  font-size: 1.6rem;
  letter-spacing: normal;
}

.btn-text i {
  margin-left: var(--spacing-xs);
  transition: var(--transition-normal);
}

.btn-text:hover {
  color: var(--color-primary-dark);
}

.btn-text:hover i {
  transform: translateX(4px);
}

/* === Layout === */

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: transparent;
  padding: var(--spacing-md) 0;
  transition: var(--transition-normal);
}

.header.scrolled {
  background-color: var(--color-white);
  box-shadow: var(--shadow-md);
  padding: var(--spacing-sm) 0;
}

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

.logo a {
  font-family: var(--font-heading);
  font-size: 2.4rem;
  font-weight: 600;
  color: var(--color-white);
  letter-spacing: 0.1rem;
}

.header.scrolled .logo a {
  color: var(--color-secondary);
}

.nav-list {
  display: flex;
  list-style: none;
}

.nav-item {
  margin-left: var(--spacing-md);
}

.nav-item a {
  font-size: 1.4rem;
  font-weight: 500;
  color: var(--color-white);
  text-transform: uppercase;
  letter-spacing: 0.1rem;
  padding: var(--spacing-xs) 0;
  position: relative;
}

.header.scrolled .nav-item a {
  color: var(--color-secondary);
}

.nav-item a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: var(--transition-normal);
}

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

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

/* Hero Section */
.hero {
  position: relative;
  height: 100vh;
  min-height: 60rem;
  display: flex;
  align-items: center;
  color: var(--color-white);
}

.hero-video-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.hero-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.4));
}

.hero-content {
  position: relative;
  z-index: 10;
  max-width: 70rem;
}

.hero-title {
  font-size: 5.6rem;
  margin-bottom: var(--spacing-md);
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 1s var(--transition-slow) forwards;
}

.hero-subtitle {
  font-size: 2rem;
  margin-bottom: var(--spacing-lg);
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 1s var(--transition-slow) 0.2s forwards;
}

.hero-cta {
  display: flex;
  gap: var(--spacing-md);
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 1s var(--transition-slow) 0.4s forwards;
}

@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Section Headers */
.section-header {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.section-title {
  position: relative;
  display: inline-block;
  margin-bottom: var(--spacing-sm);
  padding-bottom: var(--spacing-sm);
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 6rem;
  height: 2px;
  background-color: var(--color-primary);
}

.section-subtitle {
  font-size: 1.8rem;
  color: var(--color-text-light);
  max-width: 60rem;
  margin: 0 auto;
}

/* Process Section */
.process-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(25rem, 1fr));
  gap: var(--spacing-md);
}

.process-card {
  position: relative;
  background-color: var(--color-white);
  padding: var(--spacing-md);
  border-radius: 3px;
  box-shadow: var(--shadow-sm);
  text-align: center;
  transition: var(--transition-normal);
}

.process-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.process-icon {
  position: relative;
  width: 8rem;
  height: 8rem;
  background-color: var(--color-primary);
  color: var(--color-white);
  border-radius: 50%;
  margin: 0 auto var(--spacing-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
}

.step-number {
  position: absolute;
  top: -1rem;
  right: -1rem;
  width: 3rem;
  height: 3rem;
  background-color: var(--color-secondary);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  font-weight: 600;
}

.process-title {
  font-size: 2rem;
  margin-bottom: var(--spacing-sm);
}

.process-description {
  color: var(--color-text-light);
}

/* Benefits Section */
.benefits {
  background-color: var(--color-light-bg);
}

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(25rem, 1fr));
  gap: var(--spacing-md);
}

.benefit-item {
  text-align: center;
  padding: var(--spacing-md);
  background-color: var(--color-white);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-normal);
}

.benefit-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.benefit-icon {
  font-size: 3.6rem;
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.benefit-title {
  font-size: 2rem;
  margin-bottom: var(--spacing-sm);
}

.benefit-description {
  color: var(--color-text-light);
  margin-bottom: 0;
}

/* Portfolio Preview */
.portfolio-preview {
  background-color: var(--color-white);
  padding: var(--spacing-lg) 0;
}

.property-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(35rem, 1fr));
  gap: var(--spacing-md);
}

.property-card {
  background-color: var(--color-white);
  border-radius: 0;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-normal);
}

.property-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.property-image {
  position: relative;
  height: 25rem;
  overflow: hidden;
}

.property-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

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

.property-badge {
  position: absolute;
  top: var(--spacing-sm);
  left: var(--spacing-sm);
  background-color: var(--color-primary);
  color: var(--color-white);
  font-size: 1.2rem;
  font-weight: 500;
  text-transform: uppercase;
  padding: 0.4rem 1rem;
  z-index: 2;
}

.property-view {
  position: absolute;
  bottom: var(--spacing-sm);
  right: var(--spacing-sm);
  background-color: var(--color-primary);
  color: var(--color-white);
  font-size: 1.2rem;
  font-weight: 500;
  padding: 0.8rem 1.2rem;
  border-radius: 3px;
  display: flex;
  align-items: center;
  z-index: 2;
  opacity: 0;
  transform: translateY(10px);
  transition: var(--transition-normal);
}

.property-view i {
  margin-right: 0.5rem;
}

.property-card:hover .property-view {
  opacity: 1;
  transform: translateY(0);
}

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

.property-title {
  font-size: 2.2rem;
  margin-bottom: var(--spacing-xs);
}

.property-location {
  display: flex;
  align-items: center;
  color: var(--color-text-light);
  font-size: 1.4rem;
  margin-bottom: var(--spacing-sm);
}

.property-location i {
  margin-right: 0.5rem;
}

.property-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-bottom: var(--spacing-sm);
}

.property-tag {
  background-color: var(--color-light-bg);
  font-size: 1.2rem;
  padding: 0.3rem 0.8rem;
  border-radius: 3px;
}

.property-btn {
  width: 100%;
  text-align: center;
}

.view-all-container {
  margin-top: var(--spacing-md);
  text-align: center;
}

/* Testimonial Section */
.testimonial-section {
  background-color: var(--color-light-bg);
  padding: var(--spacing-lg) 0;
}

.testimonial-slider {
  position: relative;
  max-width: 80rem;
  margin: 0 auto;
}

.testimonial-slide {
  display: none;
}

.testimonial-slide.active {
  display: block;
  animation: fadeIn 0.5s ease forwards;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.testimonial-content {
  background-color: var(--color-white);
  padding: var(--spacing-lg);
  border-radius: 5px;
  box-shadow: var(--shadow-sm);
}

.testimonial-quote {
  position: relative;
  padding: 0 var(--spacing-md);
  text-align: center;
  margin-bottom: var(--spacing-md);
}

.testimonial-quote i {
  color: var(--color-primary);
  font-size: 2.4rem;
  opacity: 0.5;
}

.testimonial-quote i.fa-quote-left {
  position: absolute;
  top: 0;
  left: 0;
}

.testimonial-quote i.fa-quote-right {
  position: absolute;
  bottom: 0;
  right: 0;
}

.testimonial-quote p {
  font-size: 1.8rem;
  font-style: italic;
  line-height: 1.8;
  margin: var(--spacing-md) 0;
}

.testimonial-author {
  display: flex;
  align-items: center;
  justify-content: center;
}

.testimonial-author img {
  width: 6rem;
  height: 6rem;
  border-radius: 50%;
  object-fit: cover;
  margin-right: var(--spacing-sm);
}

.author-info h4 {
  font-size: 1.8rem;
  margin-bottom: 0.3rem;
}

.author-info p {
  color: var(--color-text-light);
  font-size: 1.4rem;
  margin-bottom: 0;
}

.testimonial-controls {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-top: var(--spacing-md);
}

.testimonial-prev,
.testimonial-next {
  background-color: var(--color-white);
  color: var(--color-text);
  width: 4rem;
  height: 4rem;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-normal);
}

.testimonial-prev:hover,
.testimonial-next:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.testimonial-dots {
  display: flex;
  align-items: center;
  margin: 0 var(--spacing-md);
}

.testimonial-dot {
  width: 1.2rem;
  height: 1.2rem;
  border-radius: 50%;
  background-color: var(--color-border);
  margin: 0 0.5rem;
  border: none;
  padding: 0;
  cursor: pointer;
  transition: var(--transition-normal);
}

.testimonial-dot.active {
  background-color: var(--color-primary);
}

/* Technology Section */
.technology-section {
  background-color: var(--color-white);
  padding: var(--spacing-lg) 0;
}

.technology-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  align-items: center;
}

.technology-text h2 {
  font-size: 3.2rem;
  margin-bottom: var(--spacing-md);
}

.technology-text p {
  margin-bottom: var(--spacing-md);
}

.technology-features {
  list-style: none;
  margin-bottom: var(--spacing-md);
}

.technology-features li {
  display: flex;
  align-items: center;
  margin-bottom: var(--spacing-sm);
}

.technology-features li i {
  color: var(--color-primary);
  margin-right: 1rem;
  font-size: 1.6rem;
}

.technology-image {
  overflow: hidden;
  border-radius: 5px;
  box-shadow: var(--shadow-md);
}

.technology-image img {
  width: 100%;
  height: auto;
  transition: transform var(--transition-slow);
}

.technology-content:hover .technology-image img {
  transform: scale(1.03);
}

/* CTA Section */
.cta-section {
  background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('../assets/images/cta-bg.jpg') center/cover no-repeat;
  color: var(--color-white);
  padding: var(--spacing-xl) 0;
  text-align: center;
}

.cta-content {
  max-width: 70rem;
  margin: 0 auto;
}

.cta-title {
  font-size: 3.6rem;
  margin-bottom: var(--spacing-sm);
}

.cta-description {
  font-size: 1.8rem;
  margin-bottom: var(--spacing-md);
  color: rgba(255, 255, 255, 0.8);
}

.cta-buttons {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
}

/* Footer */
.footer {
  background-color: var(--color-secondary);
  color: var(--color-white);
  padding: var(--spacing-lg) 0 var(--spacing-md);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(25rem, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.footer-logo {
  font-family: var(--font-heading);
  font-size: 2.4rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.footer-description {
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: var(--spacing-md);
}

.social-links {
  display: flex;
  gap: var(--spacing-sm);
}

.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3.6rem;
  height: 3.6rem;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--color-white);
  transition: var(--transition-normal);
}

.social-links a:hover {
  background-color: var(--color-primary);
  transform: translateY(-2px);
}

.footer-heading {
  font-size: 1.8rem;
  margin-bottom: var(--spacing-md);
  position: relative;
  padding-bottom: var(--spacing-xs);
}

.footer-heading::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 4rem;
  height: 2px;
  background-color: var(--color-primary);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--spacing-xs);
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  transition: var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-primary);
  padding-left: var(--spacing-xs);
}

.footer-contact p {
  display: flex;
  align-items: center;
  margin-bottom: var(--spacing-xs);
  color: rgba(255, 255, 255, 0.7);
}

.footer-contact i {
  margin-right: var(--spacing-xs);
  color: var(--color-primary);
}

.footer-contact a {
  color: rgba(255, 255, 255, 0.7);
  transition: var(--transition-fast);
}

.footer-contact a:hover {
  color: var(--color-primary);
}

.newsletter-form {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.newsletter-form input {
  flex: 1;
  min-width: 20rem;
  padding: 1.2rem;
  border: none;
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--color-white);
}

.newsletter-form input::placeholder {
  color: rgba(255, 255, 255, 0.5);
}

.newsletter-form button {
  padding: 1.2rem 1.8rem;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--spacing-md);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.copyright {
  font-size: 1.4rem;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: 0;
}

.footer-policy-links {
  display: flex;
  list-style: none;
  gap: var(--spacing-md);
}

.footer-policy-links a {
  font-size: 1.4rem;
  color: rgba(255, 255, 255, 0.5);
}

.footer-policy-links a:hover {
  color: var(--color-primary);
}

/* === Animations === */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* === Loading Indicator === */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(255, 255, 255, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}

.loading-spinner {
  width: 5rem;
  height: 5rem;
  border: 3px solid var(--color-light-bg);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* === Notification === */
.notification {
  position: fixed;
  bottom: 3rem;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background-color: var(--color-secondary);
  color: var(--color-white);
  padding: 1.5rem 3rem;
  border-radius: 3px;
  z-index: 9000;
  opacity: 0;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.notification.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

.notification.success {
  background-color: #4CAF50;
}

.notification.error {
  background-color: #e74c3c;
}

.notification.info {
  background-color: #3498db;
}