/* ===================================
   Atlas Construction & Engineering
   Glassmorphism Design System
   =================================== */

:root {
  /* Color Palette - Lighter theme matching logo */
  --primary-color: #FF8C42;
  --primary-dark: #E67A2E;
  --primary-light: #FFA661;
  --accent-color: #FF8C42;
  --accent-dark: #E67A2E;

  --bg-deep: #F5F7FA;
  --bg-dark: #FFFFFF;
  --bg-gradient-start: #FFFFFF;
  --bg-gradient-end: #F0F4F8;

  --text-primary: #1A1A1A;
  --text-secondary: #4A5568;
  --text-muted: #718096;

  /* Glass Effects - Adjusted for light theme */
  --glass-bg: rgba(255, 255, 255, 0.8);
  --glass-bg-strong: rgba(255, 255, 255, 0.95);
  --glass-border: rgba(255, 140, 66, 0.15);
  --glass-highlight: rgba(255, 140, 66, 0.25);
  --blur-amount: 16px;
  --blur-strong: 24px;

  /* Shadows - Adjusted for light theme */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.12);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.15);
  --shadow-glow: 0 0 20px rgba(255, 140, 66, 0.3);

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;

  /* Spacing */
  --section-padding: clamp(3rem, 8vw, 6rem);
  --container-padding: clamp(1rem, 4vw, 2rem);

  /* Typography */
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-heading: 'Outfit', var(--font-body);

  /* Transitions */
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===================================
   Reset & Base Styles
   =================================== */

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

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

  html {
    scroll-behavior: auto;
  }
}

body {
  font-family: var(--font-body);
  font-size: clamp(0.9375rem, 2vw, 1rem);
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-deep);
  position: relative;
  overflow-x: hidden;
  min-height: 100vh;
}

/* Animated Background Gradient */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--bg-gradient-start) 0%, var(--bg-gradient-end) 100%);
  z-index: -3;
}

/* Noise Texture Overlay */
body::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)' opacity='0.015'/%3E%3C/svg%3E");
  z-index: -2;
  pointer-events: none;
}

/* Ambient Light Blobs */
.hero::before,
.hero::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.08;
  z-index: 0;
  pointer-events: none;
}

.hero::before {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, var(--primary-color) 0%, transparent 70%);
  top: -200px;
  right: -100px;
}

.hero::after {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, var(--accent-color) 0%, transparent 70%);
  bottom: -150px;
  left: -100px;
}

/* ===================================
   Typography
   =================================== */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.75rem); }

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

/* ===================================
   Layout
   =================================== */

.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

section {
  padding: var(--section-padding) 0;
  position: relative;
}

/* ===================================
   Glass Components
   =================================== */

.glass-panel {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--blur-amount));
  -webkit-backdrop-filter: blur(var(--blur-amount));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  position: relative;
  overflow: hidden;
}

.glass-panel::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--glass-highlight), transparent);
}

/* ===================================
   Navigation
   =================================== */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1rem 0;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--blur-strong));
  -webkit-backdrop-filter: blur(var(--blur-strong));
  border-bottom: 1px solid var(--glass-border);
  transition: all var(--transition-base);
}

.navbar.scrolled {
  padding: 0.75rem 0;
  box-shadow: var(--shadow-lg);
}

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

.logo-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--text-primary);
  transition: opacity var(--transition-base);
}

.logo-link:hover {
  opacity: 0.8;
}

.logo-img {
  height: 40px;
  width: auto;
}

.logo-text {
  display: none;
}

@media (min-width: 640px) {
  .logo-text {
    display: inline;
  }
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 2rem;
  align-items: center;
}

.nav-menu a {
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 0.5rem 0;
  transition: color var(--transition-base);
}

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

.nav-menu a:hover,
.nav-menu a.active {
  color: var(--text-primary);
}

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

.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 0.375rem;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  z-index: 1001;
}

.hamburger {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: all var(--transition-base);
  border-radius: 2px;
}

.mobile-toggle[aria-expanded="true"] .hamburger:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.mobile-toggle[aria-expanded="true"] .hamburger:nth-child(2) {
  opacity: 0;
}

.mobile-toggle[aria-expanded="true"] .hamburger:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

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

  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    height: 100vh;
    width: min(300px, 80vw);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 6rem 2rem 2rem;
    background: var(--glass-bg-strong);
    backdrop-filter: blur(var(--blur-strong));
    -webkit-backdrop-filter: blur(var(--blur-strong));
    border-left: 1px solid var(--glass-border);
    transition: right var(--transition-base);
    box-shadow: var(--shadow-xl);
  }

  .nav-menu.active {
    right: 0;
  }

  .nav-menu li {
    width: 100%;
  }

  .nav-menu a {
    display: block;
    width: 100%;
    padding: 1rem 0;
    font-size: 1.125rem;
  }
}

/* ===================================
   Hero Section
   =================================== */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding-top: 80px;
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(255, 140, 66, 0.03) 0%, rgba(255, 166, 97, 0.05) 100%);
  z-index: 0;
}

.hero-container {
  position: relative;
  z-index: 1;
}

.hero-glass-card {
  background: var(--glass-bg-strong);
  backdrop-filter: blur(var(--blur-strong));
  -webkit-backdrop-filter: blur(var(--blur-strong));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-2xl);
  padding: clamp(2rem, 6vw, 4rem);
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.hero-glass-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--glass-highlight), transparent);
}

.hero-title {
  margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary-color) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--text-secondary);
  margin-bottom: 2rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===================================
   Buttons
   =================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 1.75rem;
  font-weight: 600;
  font-size: 1rem;
  border-radius: var(--radius-lg);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  color: white;
  box-shadow: var(--shadow-md), var(--shadow-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg), 0 0 30px rgba(255, 140, 66, 0.4);
}

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

.btn-secondary {
  background: var(--glass-bg-strong);
  backdrop-filter: blur(var(--blur-amount));
  -webkit-backdrop-filter: blur(var(--blur-amount));
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
}

.btn-secondary:hover {
  background: var(--glass-highlight);
  border-color: var(--glass-highlight);
  transform: translateY(-2px);
}

.btn-block {
  width: 100%;
}

.btn-icon {
  flex-shrink: 0;
}

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

/* ===================================
   Trust Strip
   =================================== */

.trust-strip {
  background: var(--glass-bg);
  border-top: 1px solid var(--glass-border);
  border-bottom: 1px solid var(--glass-border);
  padding: 2rem 0;
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 2rem;
  align-items: center;
}

.trust-badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.9375rem;
  font-weight: 500;
}

.trust-icon {
  color: var(--primary-color);
  flex-shrink: 0;
}

/* ===================================
   Section Titles
   =================================== */

.section-title {
  text-align: center;
  margin-bottom: 1rem;
}

.section-subtitle {
  text-align: center;
  color: var(--text-secondary);
  font-size: clamp(1rem, 2vw, 1.125rem);
  margin-bottom: 3rem;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

/* ===================================
   Services Section
   =================================== */

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

.service-card {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--blur-amount));
  -webkit-backdrop-filter: blur(var(--blur-amount));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: 2rem;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--glass-highlight), transparent);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.service-card:hover {
  transform: translateY(-4px);
  background: var(--glass-bg-strong);
  border-color: var(--glass-highlight);
  box-shadow: var(--shadow-xl);
}

.service-card:hover::before {
  opacity: 1;
}

.service-icon {
  color: var(--primary-color);
  margin-bottom: 1.25rem;
}

.service-title {
  margin-bottom: 0.75rem;
  font-size: 1.25rem;
}

.service-description {
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===================================
   Projects Section
   =================================== */

.projects {
  background: rgba(255, 140, 66, 0.02);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.project-card {
  background: var(--glass-bg-strong);
  backdrop-filter: blur(var(--blur-amount));
  -webkit-backdrop-filter: blur(var(--blur-amount));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--transition-base);
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: var(--glass-highlight);
}

.project-image-placeholder {
  width: 100%;
  height: 240px;
  background: linear-gradient(135deg, rgba(255, 140, 66, 0.08) 0%, rgba(255, 166, 97, 0.12) 100%);
  position: relative;
}

.project-image-placeholder::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='40' height='40' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M0 0h40v40H0z' fill='none'/%3E%3Cpath d='M20 15v10m-5-5h10' stroke='rgba(26,26,26,0.08)' stroke-width='2'/%3E%3C/svg%3E") center/60px;
  opacity: 0.5;
}

.project-content {
  padding: 1.5rem;
}

.project-title {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.project-scope {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  margin-bottom: 0.25rem;
}

.project-location {
  color: var(--text-muted);
  font-size: 0.875rem;
}

/* ===================================
   Process Section
   =================================== */

.process-timeline {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  max-width: 1100px;
  margin: 0 auto;
}

.process-step {
  text-align: center;
  position: relative;
}

.step-number {
  width: 60px;
  height: 60px;
  margin: 0 auto 1rem;
  background: var(--glass-bg-strong);
  backdrop-filter: blur(var(--blur-amount));
  -webkit-backdrop-filter: blur(var(--blur-amount));
  border: 2px solid var(--primary-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
  font-family: var(--font-heading);
  box-shadow: 0 0 20px rgba(255, 140, 66, 0.2);
}

.step-title {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

.step-description {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.6;
}

/* ===================================
   About Section
   =================================== */

.about-content {
  max-width: 1000px;
  margin: 0 auto;
}

.about-text {
  margin-bottom: 3rem;
}

.about-text p {
  color: var(--text-secondary);
  font-size: clamp(1rem, 2vw, 1.125rem);
  line-height: 1.8;
  margin-bottom: 1.5rem;
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.value-card {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--blur-amount));
  -webkit-backdrop-filter: blur(var(--blur-amount));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: 2rem;
  text-align: center;
  transition: all var(--transition-base);
}

.value-card:hover {
  background: var(--glass-bg-strong);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.value-icon {
  color: var(--primary-color);
  margin-bottom: 1rem;
}

.value-card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

.value-card p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.6;
}

/* ===================================
   Contact Section
   =================================== */

.contact {
  background: rgba(255, 140, 66, 0.02);
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 3rem;
  max-width: 1000px;
  margin: 0 auto;
}

.contact-info h3 {
  margin-bottom: 2rem;
  font-size: 1.5rem;
}

.contact-item {
  display: flex;
  gap: 1rem;
  margin-bottom: 2rem;
  align-items: flex-start;
}

.contact-icon {
  color: var(--primary-color);
  flex-shrink: 0;
  margin-top: 0.25rem;
}

.contact-item strong {
  display: block;
  margin-bottom: 0.25rem;
  color: var(--text-primary);
}

.contact-item a {
  color: var(--primary-light);
  transition: color var(--transition-base);
}

.contact-item a:hover {
  color: var(--primary-color);
  text-decoration: underline;
}

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

/* ===================================
   Contact Form
   =================================== */

.contact-form {
  background: var(--glass-bg-strong);
  backdrop-filter: blur(var(--blur-amount));
  -webkit-backdrop-filter: blur(var(--blur-amount));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: 2rem;
}

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

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.875rem 1rem;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 1rem;
  transition: all var(--transition-base);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  background: var(--glass-bg-strong);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

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

.form-group select {
  cursor: pointer;
}

/* ===================================
   Footer
   =================================== */

.footer {
  background: #FAFBFC;
  border-top: 1px solid var(--glass-border);
  padding: 3rem 0 2rem;
  margin-top: var(--section-padding);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
}

.footer-col h4 {
  font-size: 1.125rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.footer-col p {
  color: var(--text-muted);
  font-size: 0.9375rem;
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 0.75rem;
}

.footer-col a {
  color: var(--text-secondary);
  transition: color var(--transition-base);
  font-size: 0.9375rem;
}

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

/* ===================================
   Back to Top Button
   =================================== */

.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 48px;
  height: 48px;
  background: var(--glass-bg-strong);
  backdrop-filter: blur(var(--blur-amount));
  -webkit-backdrop-filter: blur(var(--blur-amount));
  border: 1px solid var(--glass-border);
  border-radius: 50%;
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-lg);
  z-index: 999;
}

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

.back-to-top:hover {
  background: var(--glass-highlight);
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.back-to-top:active {
  transform: translateY(-2px);
}

.back-to-top:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* ===================================
   Utility Classes
   =================================== */

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

/* ===================================
   Responsive Adjustments
   =================================== */

@media (max-width: 640px) {
  .hero-cta {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    width: 100%;
  }

  .trust-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .services-grid,
  .projects-grid {
    grid-template-columns: 1fr;
  }

  .process-timeline {
    grid-template-columns: 1fr;
  }

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

@media (min-width: 768px) {
  .logo-img {
    height: 48px;
  }
}

/* ===================================
   Print Styles
   =================================== */

@media print {
  .navbar,
  .mobile-toggle,
  .back-to-top,
  .hero-cta {
    display: none;
  }

  body {
    background: white;
    color: black;
  }

  .glass-panel,
  .service-card,
  .project-card,
  .value-card {
    border: 1px solid #ccc;
    background: white;
  }
}