/* ============================================
   Illinois Valley Construction - Main Styles
   Mobile-First Responsive Design
   ============================================ */

/* ============================================
   CSS Variables (Custom Properties)
   ============================================ */
:root {
  /* Colors */
  --primary-red: #C41E3A;
  --dark-gray: #2C2C2C;
  --medium-gray: #6B6B6B;
  --light-gray: #F5F5F5;
  --white: #FFFFFF;
  --success-green: #28A745;
  --error-red: #DC3545;
  
  /* Typography */
  --font-heading: 'Montserrat', Arial, sans-serif;
  --font-body: 'Open Sans', Helvetica, sans-serif;
  
  /* Font Sizes - Mobile First */
  --h1-size: 32px;
  --h2-size: 28px;
  --h3-size: 24px;
  --h4-size: 20px;
  --body-size: 16px;
  --small-size: 14px;
  
  /* Spacing */
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 32px;
  --spacing-xl: 48px;
  --spacing-xxl: 64px;
  
  /* Layout */
  --max-width: 1200px;
  --border-radius: 4px;
  --transition: all 0.3s ease;
}

/* ============================================
   Reset & Base Styles
   ============================================ */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

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

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
  color: var(--dark-gray);
}

h1 {
  font-size: var(--h1-size);
}

h2 {
  font-size: var(--h2-size);
}

h3 {
  font-size: var(--h3-size);
}

h4 {
  font-size: var(--h4-size);
}

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

a {
  color: var(--primary-red);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: #A01828;
  text-decoration: underline;
}

/* ============================================
   Container & Layout
   ============================================ */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

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

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

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

/* ============================================
   Header & Navigation
   ============================================ */
.header {
  background-color: var(--white);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm);
}

.logo {
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 700;
  color: var(--primary-red);
  text-decoration: none;
}

.logo:hover {
  text-decoration: none;
}

/* Mobile Navigation */
.nav-toggle {
  display: block;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
}

.nav-toggle span {
  display: block;
  width: 25px;
  height: 3px;
  background-color: var(--dark-gray);
  margin: 5px 0;
  transition: var(--transition);
}

.nav-menu {
  position: fixed;
  top: 0;
  right: -100%;
  width: 80%;
  max-width: 300px;
  height: 100vh;
  background-color: var(--white);
  box-shadow: -2px 0 10px rgba(0, 0, 0, 0.1);
  transition: right 0.3s ease;
  overflow-y: auto;
  z-index: 999;
}

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

.nav-close {
  display: block;
  text-align: right;
  padding: var(--spacing-sm);
  font-size: 30px;
  cursor: pointer;
  color: var(--dark-gray);
}

.nav-list {
  list-style: none;
  padding: var(--spacing-md);
}

.nav-item {
  margin-bottom: var(--spacing-sm);
}

.nav-link {
  display: block;
  padding: var(--spacing-sm);
  color: var(--dark-gray);
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary-red);
  background-color: var(--light-gray);
  text-decoration: none;
}

/* Phone CTA in Header */
.header-phone {
  display: none;
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
  position: relative;
  min-height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--white);
  background: linear-gradient(135deg, var(--primary-red) 0%, #8B1428 100%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('../images/hero/construction-bg.jpg') center/cover no-repeat;
  opacity: 0.5;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  padding: var(--spacing-xl) var(--spacing-sm);
}

.hero h1 {
  color: var(--white);
  margin-bottom: var(--spacing-md);
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero p {
  font-size: 18px;
  margin-bottom: var(--spacing-lg);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
  display: inline-block;
  padding: 14px 28px;
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 600;
  text-align: center;
  text-decoration: none;
  border: 2px solid transparent;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: var(--transition);
  min-width: 44px;
  min-height: 44px;
}

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

.btn-primary:hover {
  background-color: #A01828;
  border-color: #A01828;
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

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

.btn-secondary:hover {
  background-color: var(--white);
  color: var(--primary-red);
  text-decoration: none;
}

.btn-outline {
  background-color: transparent;
  color: var(--primary-red);
  border-color: var(--primary-red);
}

.btn-outline:hover {
  background-color: var(--primary-red);
  color: var(--white);
  text-decoration: none;
}

.btn-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  align-items: center;
}

/* ============================================
   Service Cards
   ============================================ */
.services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.service-card {
  background-color: var(--white);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  text-align: center;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  transition: var(--transition);
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
}

.service-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--spacing-md);
  background-color: var(--primary-red);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 40px;
  color: var(--white);
}

.service-card h3 {
  color: var(--primary-red);
  margin-bottom: var(--spacing-sm);
}

.service-card p {
  color: var(--medium-gray);
  margin-bottom: var(--spacing-md);
}

/* ============================================
   Project Gallery
   ============================================ */
.projects-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.project-card {
  background-color: var(--white);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  transition: var(--transition);
}

.project-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
}

.project-image {
  width: 100%;
  height: 250px;
  object-fit: cover;
  background-color: var(--light-gray);
  display: block;
}

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

.project-badge {
  display: inline-block;
  padding: 4px 12px;
  background-color: var(--primary-red);
  color: var(--white);
  font-size: var(--small-size);
  font-weight: 600;
  border-radius: var(--border-radius);
  margin-bottom: var(--spacing-sm);
}

.project-card h3 {
  margin-bottom: var(--spacing-sm);
}

.project-card p {
  color: var(--medium-gray);
}

/* ============================================
   Forms
   ============================================ */
.form-group {
  margin-bottom: var(--spacing-md);
}

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

.form-label.required::after {
  content: ' *';
  color: var(--error-red);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 12px;
  font-family: var(--font-body);
  font-size: var(--body-size);
  border: 2px solid var(--light-gray);
  border-radius: var(--border-radius);
  transition: var(--transition);
  min-height: 44px;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--primary-red);
  box-shadow: 0 0 0 3px rgba(196, 30, 58, 0.1);
}

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

.form-radio-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.form-radio-label {
  display: flex;
  align-items: center;
  cursor: pointer;
  padding: var(--spacing-sm);
  border: 2px solid var(--light-gray);
  border-radius: var(--border-radius);
  transition: var(--transition);
}

.form-radio-label:hover {
  border-color: var(--primary-red);
  background-color: var(--light-gray);
}

.form-radio-label input[type="radio"] {
  margin-right: var(--spacing-sm);
  width: 20px;
  height: 20px;
}

.form-error {
  color: var(--error-red);
  font-size: var(--small-size);
  margin-top: var(--spacing-xs);
  display: none;
}

.form-success {
  padding: var(--spacing-md);
  background-color: var(--success-green);
  color: var(--white);
  border-radius: var(--border-radius);
  margin-bottom: var(--spacing-md);
  display: none;
}

/* ============================================
   Contact Information
   ============================================ */
.contact-info-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.contact-info-card {
  background-color: var(--white);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  text-align: center;
}

.contact-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto var(--spacing-md);
  background-color: var(--primary-red);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 30px;
  color: var(--white);
}

.contact-info-card h3 {
  color: var(--primary-red);
  margin-bottom: var(--spacing-sm);
}

.contact-info-card a {
  color: var(--dark-gray);
  font-weight: 600;
  word-break: break-word;
}

.contact-info-card a:hover {
  color: var(--primary-red);
}

/* ============================================
   Google Maps
   ============================================ */
.map-container {
  width: 100%;
  height: 400px;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  margin-top: var(--spacing-lg);
}

.map-container iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

/* ============================================
   Footer
   ============================================ */
.footer {
  background-color: var(--dark-gray);
  color: var(--white);
  padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.footer-section h4 {
  color: var(--white);
  margin-bottom: var(--spacing-md);
}

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

.footer-list li {
  margin-bottom: var(--spacing-sm);
}

.footer-list a {
  color: var(--light-gray);
  text-decoration: none;
  transition: var(--transition);
}

.footer-list a:hover {
  color: var(--white);
  text-decoration: none;
  padding-left: 5px;
}

.footer-contact p {
  margin-bottom: var(--spacing-sm);
  color: var(--light-gray);
}

.footer-contact a {
  color: var(--white);
  font-weight: 600;
}

.footer-bottom {
  border-top: 1px solid var(--medium-gray);
  padding-top: var(--spacing-md);
  text-align: center;
  color: var(--light-gray);
  font-size: var(--small-size);
}

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

.text-white {
  color: var(--white);
}

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

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

.mb-lg {
  margin-bottom: var(--spacing-lg);
}

.mt-sm {
  margin-top: var(--spacing-sm);
}

.mt-md {
  margin-top: var(--spacing-md);
}

.mt-lg {
  margin-top: var(--spacing-lg);
}

.hidden {
  display: none;
}

/* ============================================
   Responsive Design - Tablet (768px+)
   ============================================ */
@media (min-width: 768px) {
  :root {
    --h1-size: 40px;
    --h2-size: 32px;
    --h3-size: 26px;
    --body-size: 17px;
  }
  
  .container {
    padding: 0 var(--spacing-lg);
  }
  
  .section {
    padding: var(--spacing-xxl) 0;
  }
  
  .hero {
    min-height: 500px;
  }
  
  .btn-group {
    flex-direction: row;
    justify-content: center;
  }
  
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .contact-info-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ============================================
   Responsive Design - Desktop (1024px+)
   ============================================ */
@media (min-width: 1024px) {
  :root {
    --h1-size: 48px;
    --h2-size: 36px;
    --h3-size: 28px;
    --body-size: 18px;
  }
  
  /* Desktop Navigation */
  .nav-toggle {
    display: none;
  }
  
  .nav-menu {
    position: static;
    width: auto;
    max-width: none;
    height: auto;
    background-color: transparent;
    box-shadow: none;
    overflow-y: visible;
  }
  
  .nav-close {
    display: none;
  }
  
  .nav-list {
    display: flex;
    padding: 0;
    gap: var(--spacing-sm);
  }
  
  .nav-item {
    margin-bottom: 0;
  }
  
  .nav-link {
    padding: var(--spacing-sm) var(--spacing-md);
  }
  
  .nav-link:hover,
  .nav-link.active {
    background-color: transparent;
    color: var(--primary-red);
  }
  
  .header-phone {
    display: block;
    font-weight: 600;
    color: var(--primary-red);
    font-size: 18px;
  }
  
  .hero {
    min-height: 600px;
  }
  
  .services-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  
  .projects-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .contact-info-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .footer-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ============================================
   Print Styles
   ============================================ */
@media print {
  .header,
  .nav-menu,
  .footer,
  .btn {
    display: none;
  }
  
  body {
    font-size: 12pt;
    color: #000;
  }
  
  a {
    text-decoration: underline;
    color: #000;
  }
}