/* Variables & Theme */
:root {
  /* Default Dark Mode */
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --accent-color: #3b82f6; /* Blue 30% prominent */
  --accent-hover: #2563eb;
  --black-color: #020617; /* Black 50% */
  --white-color: #ffffff;
  
  --nav-bg: rgba(15, 23, 42, 0.9);
  --card-bg: #1e293b;
  --border-color: #334155;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -4px rgba(0, 0, 0, 0.5);
  --shadow-hover: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.5);
  
  --font-primary: 'Poppins', sans-serif;
  --font-secondary: 'Inter', sans-serif;
  
  --transition-normal: all 0.3s ease;
  --transition-slow: all 0.5s ease;
}

[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --nav-bg: rgba(255, 255, 255, 0.95);
  --card-bg: #ffffff;
  --border-color: #e2e8f0;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-hover: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

/* Reset & Global */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  font-family: var(--font-secondary);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color 0.3s, color 0.3s;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-primary);
  font-weight: 600;
  line-height: 1.2;
}

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

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

ul {
  list-style: none;
}

.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 6rem 0;
}

.section-title {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.section-subtitle {
  text-align: center;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 4rem;
  font-size: 1.1rem;
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  font-family: var(--font-primary);
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: var(--transition-normal);
  text-align: center;
}

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

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

.btn-outline {
  background-color: transparent;
  color: var(--text-primary);
  border: 2px solid var(--accent-color);
}

.btn-outline:hover {
  background-color: var(--accent-color);
  color: var(--white-color);
  transform: translateY(-2px);
}

/* Header & Nav */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: var(--nav-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 1000;
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition-normal);
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 5rem;
}

.logo {
  font-family: var(--font-primary);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo span {
  color: var(--accent-color);
}

.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-link {
  font-weight: 500;
  font-size: 1rem;
}

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

.nav-controls {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.icon-btn {
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.25rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem;
  border-radius: 50%;
  transition: var(--transition-normal);
}

.icon-btn:hover {
  background-color: var(--bg-secondary);
  color: var(--accent-color);
}

.mobile-toggle {
  display: none;
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding-top: 5rem;
  background-image: linear-gradient(rgba(2, 6, 23, 0.7), rgba(2, 6, 23, 0.8)), url('https://images.unsplash.com/photo-1600596542815-ffad4c1539a9?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  color: var(--white-color);
}

.hero-content {
  max-width: 800px;
  z-index: 1;
}

.hero-title {
  font-size: 4rem;
  margin-bottom: 1.5rem;
  color: var(--white-color);
}

.hero-subtitle {
  font-size: 1.5rem;
  margin-bottom: 2.5rem;
  color: #e2e8f0;
  max-width: 600px;
}

.hero-btns {
  display: flex;
  gap: 1rem;
}

/* About Section */
.about {
  background-color: var(--bg-secondary);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about-content h2 {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
  color: var(--accent-color);
}

.about-content p {
  margin-bottom: 1.5rem;
  font-size: 1.1rem;
  color: var(--text-secondary);
}

.about-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-top: 2rem;
}

.feature {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.feature-icon {
  font-size: 2rem;
  color: var(--accent-color);
}

.about-image {
  position: relative;
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

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

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

.about-stats {
  grid-column: 1 / -1;
  display: flex;
  justify-content: space-around;
  background-color: var(--bg-primary);
  padding: 3rem;
  border-radius: 1.5rem;
  box-shadow: var(--shadow-md);
  margin-top: 3rem;
  border: 1px solid var(--border-color);
}

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

.stat-number {
  display: block;
  font-size: 3rem;
  font-weight: 700;
  color: var(--accent-color);
  margin-bottom: 0.5rem;
}

.stat-label {
  font-size: 1.1rem;
  color: var(--text-secondary);
  font-weight: 500;
}

/* Why Choose Us Section */
.why-choose {
  background-color: var(--bg-primary);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.service-card {
  background-color: var(--bg-secondary);
  padding: 3rem 2rem;
  border-radius: 1.5rem;
  text-align: center;
  transition: var(--transition-normal);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}

.service-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent-color);
}

.service-icon {
  width: 70px;
  height: 70px;
  background-color: rgba(59, 130, 246, 0.1);
  color: var(--accent-color);
  font-size: 2.5rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  transition: var(--transition-normal);
}

.service-card:hover .service-icon {
  background-color: var(--accent-color);
  color: var(--white-color);
  transform: rotateY(360deg);
}

.service-card h3 {
  font-size: 1.25rem;
  margin-bottom: 1rem;
}

.service-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* Projects Navigation */
.project-nav-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.nav-card {
  background-color: var(--bg-secondary);
  border-radius: 1rem;
  padding: 3rem 2rem;
  text-align: center;
  box-shadow: var(--shadow-md);
  transition: var(--transition-normal);
  border: 1px solid var(--border-color);
  cursor: pointer;
}

.nav-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-hover);
  border-color: var(--accent-color);
}

.nav-card-icon {
  font-size: 3.5rem;
  color: var(--accent-color);
  margin-bottom: 1.5rem;
}

.nav-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

/* Shared Project Grid */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 2.5rem;
}

.project-card {
  background-color: var(--bg-secondary);
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: var(--transition-normal);
  border: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-hover);
}

.project-img-wrapper {
  position: relative;
  height: 250px;
  overflow: hidden;
}

.project-img-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-slow);
}

.project-card:hover .project-img-wrapper img {
  transform: scale(1.1);
}

.project-badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background-color: var(--accent-color);
  color: var(--white-color);
  padding: 0.25rem 0.75rem;
  border-radius: 2rem;
  font-size: 0.875rem;
  font-weight: 600;
  z-index: 2;
}

.project-info {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.project-title {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.project-location {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
  font-size: 0.95rem;
}

.project-details-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.detail-item {
  display: flex;
  flex-direction: column;
}

.detail-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.detail-value {
  font-weight: 600;
  color: var(--text-primary);
}

.unit-sizes {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.unit-size {
  background-color: var(--bg-primary);
  padding: 0.25rem 0.5rem;
  border-radius: 0.25rem;
  font-size: 0.85rem;
  border: 1px solid var(--border-color);
}

.project-footer {
  margin-top: auto;
}

/* Sections specific background colors */
#company-projects { background-color: var(--bg-primary); }
#external-projects { background-color: var(--bg-secondary); }
#previous-projects { background-color: var(--bg-primary); }

/* Contact Section */
.contact {
  background-color: var(--bg-secondary);
  position: relative;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
}

.contact-info-wrapper {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.contact-card {
  display: flex;
  align-items: flex-start;
  gap: 1.5rem;
  background-color: var(--bg-primary);
  padding: 2rem;
  border-radius: 1rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
}

.contact-icon {
  font-size: 2rem;
  color: var(--accent-color);
  background-color: rgba(59, 130, 246, 0.1);
  padding: 1rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.contact-details h4 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.contact-details p {
  color: var(--text-secondary);
}

.contact-form {
  background-color: var(--bg-primary);
  padding: 3rem;
  border-radius: 1rem;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.form-control {
  width: 100%;
  padding: 1rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  color: var(--text-primary);
  font-family: var(--font-secondary);
  font-size: 1rem;
  transition: var(--transition-normal);
}

.form-control:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

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

/* Map */
.map-container {
  width: 100%;
  height: 400px;
  border-radius: 1rem;
  overflow: hidden;
  margin-top: 4rem;
  border: 1px solid var(--border-color);
}

.map-container iframe {
  width: 100%;
  height: 100%;
  border: none;
}

/* Footer */
.footer {
  background-color: var(--black-color);
  color: #f8fafc;
  padding: 4rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 4rem;
  margin-bottom: 3rem;
}

.footer-about p {
  color: #94a3b8;
  margin-top: 1rem;
  max-width: 400px;
}

.footer-title {
  font-size: 1.25rem;
  margin-bottom: 1.5rem;
  font-family: var(--font-primary);
  color: #f8fafc;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links a {
  color: #94a3b8;
}

.footer-links a:hover {
  color: var(--accent-color);
  padding-inline-start: 0.5rem;
}

.social-links {
  display: flex;
  gap: 1rem;
  margin-top: 1.5rem;
}

.social-link {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #f8fafc;
  transition: var(--transition-normal);
}

.social-link:hover {
  background-color: var(--accent-color);
  transform: translateY(-3px);
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: #94a3b8;
}

/* Floating WhatsApp */
.whatsapp-float {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 60px;
  height: 60px;
  background-color: #25d366;
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  box-shadow: var(--shadow-lg);
  z-index: 100;
  transition: var(--transition-normal);
}

.whatsapp-float:hover {
  transform: scale(1.1);
  background-color: #128c7e;
}

[dir="rtl"] .whatsapp-float {
  right: auto;
  left: 2rem;
}

/* RTL Support for Arabic */
[dir="rtl"] {
  font-family: 'Cairo', 'Poppins', sans-serif;
}

[dir="rtl"] .hero-title,
[dir="rtl"] .section-title,
[dir="rtl"] h1, [dir="rtl"] h2, [dir="rtl"] h3 {
  font-family: 'Cairo', sans-serif;
}

[dir="rtl"] .nav-links {
  flex-direction: row-reverse;
}

[dir="rtl"] .feature-icon,
[dir="rtl"] .contact-icon {
  transform: scaleX(-1);
}

[dir="rtl"] .project-badge {
  right: auto;
  left: 1rem;
}

[dir="rtl"] .footer-grid {
  direction: rtl;
}

[dir="rtl"] .footer-links a:hover {
  padding-inline-start: 0;
  padding-inline-end: 0.5rem;
}

/* Animation Classes */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

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

/* Responsive */
@media (max-width: 992px) {
  .hero-title { font-size: 3rem; }
  .about-grid, .contact-grid { grid-template-columns: 1fr; gap: 3rem; }
  .project-nav-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 5rem;
    left: -100%;
    width: 100%;
    height: calc(100vh - 5rem);
    background-color: var(--nav-bg);
    backdrop-filter: blur(10px);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    transition: var(--transition-normal);
  }

  .nav-links.active {
    left: 0;
  }

  [dir="rtl"] .nav-links {
    left: auto;
    right: -100%;
  }

  [dir="rtl"] .nav-links.active {
    right: 0;
  }

  .mobile-toggle {
    display: block;
    margin-left: 1rem;
  }

  [dir="rtl"] .mobile-toggle {
    margin-left: 0;
    margin-right: 1rem;
  }

  .hero-title { font-size: 2.5rem; }
  .footer-grid { grid-template-columns: 1fr; text-align: center; }
  .footer-about p { margin: 1rem auto; }
  .social-links { justify-content: center; }
  
  .project-grid { grid-template-columns: 1fr; }
}

/* Final Polishing - Premium Effects */
.service-icon, .contact-icon, .feature-icon {
  transition: var(--transition-normal);
}

[data-theme="dark"] .service-card,
[data-theme="dark"] .project-card,
[data-theme="dark"] .contact-card {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.btn-primary {
  position: relative;
  overflow: hidden;
}

.btn-primary::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: 0.5s;
}

.btn-primary:hover::after {
  left: 100%;
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 2.25rem;
  }
}