/* AR Bharat Ltd - Style Sheet */

/* Modern CSS Reset & Box Model */
*, *::before, *::after {
  box-sizing: border-box;
}

body, h1, h2, h3, h4, p, ul, ol, figure, blockquote, dl, dd {
  margin: 0;
  padding: 0;
}

ul, ol {
  list-style: none;
}

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

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

/* Custom Properties (Design Tokens) */
:root {
  --color-bg: #ffffff;
  --color-dark: #1a1a1a;
  --color-black: #111111;
  --color-primary: #f37021; /* Construction Orange */
  --color-primary-hover: #d95f14;
  --color-light-gray: #f8f9fa;
  --color-gray-200: #e9ecef;
  --color-gray-300: #dee2e6;
  --color-text: #2d3748;
  --color-muted: #5a6578;
  --color-success: #2f855a;
  
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --max-width: 1200px;
  --transition: all 0.25s ease-in-out;
  
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 3.5rem;
  --spacing-xl: 6rem;
  
  --border-radius: 4px;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.03);
}

/* Base Styles */
html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

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

/* Accessibility Focus States */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

/* Typography */
h1, h2, h3, h4 {
  color: var(--color-dark);
  font-weight: 700;
  line-height: 1.25;
}

h1 {
  font-size: clamp(2rem, 5vw, 3rem);
}

h2 {
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  margin-bottom: var(--spacing-sm);
  position: relative;
  padding-bottom: var(--spacing-xs);
}

h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 50px;
  height: 4px;
  background-color: var(--color-primary);
}

/* Centered heading helper */
.text-center h2::after {
  left: 50%;
  transform: translateX(-50%);
}

h3 {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-xs);
}

p {
  margin-bottom: var(--spacing-sm);
  color: var(--color-muted);
}

/* Layout Utilities */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--spacing-sm);
  padding-right: var(--spacing-sm);
}

.section {
  padding-top: var(--spacing-lg);
  padding-bottom: var(--spacing-lg);
}

.section-light {
  background-color: var(--color-light-gray);
}

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

/* Grid & Flex layouts */
.grid {
  display: grid;
  gap: var(--spacing-md);
}

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

.grid-3 {
  grid-template-columns: 1fr;
}

.grid-4 {
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }

  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .grid-4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Header & Navigation */
.header {
  background-color: var(--color-bg);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 2px solid var(--color-gray-200);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-dark);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

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

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

.nav-link {
  font-weight: 600;
  color: var(--color-dark);
  transition: var(--transition);
  padding: var(--spacing-xs) 0;
  position: relative;
}

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

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--color-primary);
}

/* Hamburger menu button */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--color-dark);
  cursor: pointer;
  padding: var(--spacing-xs);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-weight: 700;
  border-radius: var(--border-radius);
  transition: var(--transition);
  cursor: pointer;
  text-align: center;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-bg);
  border: 2px solid var(--color-primary);
}

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

.btn-secondary {
  background-color: transparent;
  color: var(--color-dark);
  border: 2px solid var(--color-dark);
}

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

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

/* Hero Section */
.hero-section {
  padding: var(--spacing-lg) 0;
  background-color: var(--color-light-gray);
  border-bottom: 1px solid var(--color-gray-200);
}

.hero-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero-title {
  margin-bottom: var(--spacing-sm);
  line-height: 1.15;
}

.hero-sub {
  font-size: 1.125rem;
  margin-bottom: var(--spacing-md);
  color: var(--color-muted);
  max-width: 600px;
}

.hero-image-container {
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-img {
  width: 100%;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-lg);
  object-fit: cover;
  aspect-ratio: 4 / 3;
}

/* Cards (Services & Why Choose Us) */
.card {
  background-color: var(--color-bg);
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  border-top: 4px solid var(--color-gray-200);
  transition: var(--transition);
}

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

.card-icon {
  width: 48px;
  height: 48px;
  background-color: rgba(243, 112, 33, 0.1);
  color: var(--color-primary);
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: var(--spacing-sm);
}

/* Projects Showcase */
.project-card {
  background-color: var(--color-bg);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 1px solid var(--color-gray-200);
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.project-image-wrapper {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background-color: var(--color-gray-200);
}

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

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

.project-info {
  padding: var(--spacing-sm) var(--spacing-md);
}

.project-tag {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--color-primary);
  letter-spacing: 1px;
  margin-bottom: 4px;
  display: inline-block;
}

/* Info Banner / Call to Action */
.cta-banner {
  background-color: var(--color-dark);
  color: var(--color-bg);
  padding: var(--spacing-lg) 0;
}

.cta-banner h2 {
  color: var(--color-bg);
}

.cta-banner p {
  color: var(--color-gray-300);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
  font-size: 1.125rem;
}

/* Forms & Contact Details */
.contact-wrapper {
  gap: var(--spacing-md);
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.info-item {
  display: flex;
  gap: var(--spacing-sm);
}

.info-icon {
  font-size: 1.25rem;
  color: var(--color-primary);
  margin-top: 4px;
}

.form-group {
  margin-bottom: var(--spacing-sm);
}

.form-label {
  display: block;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--color-dark);
}

.form-control {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--color-gray-300);
  border-radius: var(--border-radius);
  transition: var(--transition);
  background-color: var(--color-bg);
}

.form-control:focus {
  border-color: var(--color-primary);
  outline: none;
  box-shadow: 0 0 0 3px rgba(243, 112, 33, 0.15);
}

/* Form success alert style */
.form-alert {
  padding: var(--spacing-sm);
  background-color: rgba(47, 133, 90, 0.1);
  color: var(--color-success);
  border-left: 4px solid var(--color-success);
  border-radius: var(--border-radius);
  margin-bottom: var(--spacing-sm);
  display: none;
}

/* Map placeholder */
.map-container {
  width: 100%;
  height: 250px;
  background-color: var(--color-light-gray);
  border: 1px solid var(--color-gray-300);
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  color: var(--color-muted);
}

.map-placeholder-info {
  text-align: center;
  padding: var(--spacing-sm);
  z-index: 2;
}

.map-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0.15;
  background-image: radial-gradient(circle, var(--color-dark) 1px, transparent 1px),
                    radial-gradient(circle, var(--color-dark) 1px, transparent 1px);
  background-size: 20px 20px;
  background-position: 0 0, 10px 10px;
}

/* Footer styling */
.footer {
  background-color: var(--color-black);
  color: var(--color-gray-300);
  padding: var(--spacing-lg) 0 var(--spacing-sm);
  border-top: 4px solid var(--color-primary);
}

.footer-logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-bg);
  margin-bottom: var(--spacing-sm);
}

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

.footer h3 {
  color: var(--color-bg);
  border-bottom: 2px solid #333;
  padding-bottom: var(--spacing-xs);
  margin-bottom: var(--spacing-sm);
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

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

.footer-links a {
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--color-primary);
  padding-left: 4px;
}

.footer-bottom {
  margin-top: var(--spacing-md);
  padding-top: var(--spacing-sm);
  border-top: 1px solid #222;
  text-align: center;
  font-size: 0.875rem;
}

/* Mobile responsive menu overrides */
@media (max-width: 767px) {
  .nav-menu {
    position: absolute;
    top: 70px;
    left: 0;
    width: 100%;
    background-color: var(--color-bg);
    flex-direction: column;
    gap: 0;
    border-bottom: 2px solid var(--color-gray-200);
    box-shadow: var(--shadow-lg);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
  }
  
  .nav-menu.open {
    max-height: 300px;
    transition: max-height 0.3s ease-in;
  }

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

  .nav-link {
    display: block;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--color-gray-200);
  }

  .nav-menu li:last-child .nav-link {
    border-bottom: none;
  }
  
  .nav-link.active::after {
    display: none;
  }
  
  .nav-toggle {
    display: block;
  }
  
  .header-cta {
    display: none;
  }
}