/*
 * PADSOR SCAFFOLDING & CONSTRUCTION - MAIN STYLESHEET
 * Version: 1.0.0
 * Last Updated: November 19, 2025
 */

/* ========================================
   CSS VARIABLES & DESIGN TOKENS
   ======================================== */

:root {
  /* Primary Colors */
  --primary-color: #003D7A;
  --primary-dark: #002852;
  --primary-light: #0056A3;
  
  /* Secondary Colors */
  --secondary-color: #FF6B35;
  --secondary-dark: #E54D1F;
  --secondary-light: #FF8A5C;
  
  /* Accent Colors */
  --accent-yellow: #FFC107;
  --accent-green: #28A745;
  --accent-red: #DC3545;
  
  /* Neutral Colors */
  --dark: #1A1A1A;
  --gray-dark: #4A4A4A;
  --gray: #757575;
  --gray-light: #E0E0E0;
  --gray-lighter: #F5F5F5;
  --white: #FFFFFF;
  
  /* Typography */
  --font-primary: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-heading: 'Montserrat', 'Helvetica Neue', sans-serif;
  
  /* Font Sizes */
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  --font-size-6xl: 3.75rem;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --spacing-4xl: 6rem;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Z-Index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
}

/* ========================================
   RESET & BASE STYLES
   ======================================== */

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

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

body {
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--dark);
  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-md);
  color: var(--dark);
}

h1 {
  font-size: var(--font-size-5xl);
}

h2 {
  font-size: var(--font-size-4xl);
}

h3 {
  font-size: var(--font-size-3xl);
}

h4 {
  font-size: var(--font-size-2xl);
}

h5 {
  font-size: var(--font-size-xl);
}

h6 {
  font-size: var(--font-size-lg);
}

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

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

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

/* ========================================
   LAYOUT & CONTAINERS
   ======================================== */

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

.container-fluid {
  width: 100%;
  padding: 0 var(--spacing-md);
}

.section {
  padding: var(--spacing-4xl) 0;
}

.section-sm {
  padding: var(--spacing-3xl) 0;
}

.section-lg {
  padding: var(--spacing-5xl) 0;
}

/* ========================================
   GRID SYSTEM
   ======================================== */

.row {
  display: flex;
  flex-wrap: wrap;
  margin: 0 calc(var(--spacing-md) * -0.5);
}

.col {
  flex: 1;
  padding: 0 calc(var(--spacing-md) * 0.5);
}

.col-6 {
  flex: 0 0 50%;
  max-width: 50%;
  padding: 0 calc(var(--spacing-md) * 0.5);
}

.col-4 {
  flex: 0 0 33.333%;
  max-width: 33.333%;
  padding: 0 calc(var(--spacing-md) * 0.5);
}

.col-3 {
  flex: 0 0 25%;
  max-width: 25%;
  padding: 0 calc(var(--spacing-md) * 0.5);
}

/* ========================================
   NAVIGATION
   ======================================== */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-fixed);
  background-color: var(--white);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
}

.navbar.transparent {
  background-color: transparent;
  box-shadow: none;
}

.navbar.scrolled {
  background-color: var(--white);
  box-shadow: var(--shadow-md);
}

.navbar-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) var(--spacing-xl);
  max-width: 1400px;
  margin: 0 auto;
}

.navbar-logo img {
  height: 120px;
  width: auto;
}

.navbar-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-xl);
  align-items: center;
}

.navbar-menu li a {
  color: var(--dark);
  font-weight: 500;
  padding: var(--spacing-sm) 0;
  position: relative;
}

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

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

.navbar-toggle {
  display: none;
  background: none;
  border: none;
  font-size: var(--font-size-2xl);
  cursor: pointer;
  color: var(--dark);
}

/* ========================================
   BUTTONS
   ======================================== */

.btn {
  display: inline-block;
  padding: 0.875rem 2rem;
  font-size: var(--font-size-base);
  font-weight: 600;
  text-align: center;
  text-decoration: none;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  line-height: 1.5;
}

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

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

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

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

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

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

.btn-lg {
  padding: 1.125rem 2.5rem;
  font-size: var(--font-size-lg);
}

.btn-sm {
  padding: 0.625rem 1.5rem;
  font-size: var(--font-size-sm);
}

/* ========================================
   HERO SECTION
   ======================================== */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  overflow: hidden;
  padding-top: 140px;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(0, 61, 122, 0.5) 0%, rgba(255, 107, 53, 0.45) 100%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: var(--white);
  padding: var(--spacing-xl);
}

/* Hero Slider Styles */
.hero-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  opacity: 0;
  transition: opacity 1.5s ease-in-out;
  z-index: 0;
}

.hero-slide.active {
  opacity: 1;
  z-index: 1;
}

.hero-slide::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(0, 61, 122, 0.5) 0%, rgba(255, 107, 53, 0.45) 100%);
  z-index: 1;
}

/* Slider Navigation Buttons */
.hero-slider-prev,
.hero-slider-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 3;
  background: rgba(255, 255, 255, 0.2);
  border: 2px solid rgba(255, 255, 255, 0.5);
  color: var(--white);
  width: 50px;
  height: 50px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s ease;
  backdrop-filter: blur(5px);
}

.hero-slider-prev:hover,
.hero-slider-next:hover {
  background: rgba(255, 255, 255, 0.3);
  border-color: var(--white);
  transform: translateY(-50%) scale(1.1);
}

.hero-slider-prev {
  left: var(--spacing-xl);
}

.hero-slider-next {
  right: var(--spacing-xl);
}

/* Slider Indicators */
.hero-slider-indicators {
  position: absolute;
  bottom: var(--spacing-xl);
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  gap: var(--spacing-sm);
}

.hero-slider-indicators .indicator {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.4);
  border: 2px solid rgba(255, 255, 255, 0.6);
  cursor: pointer;
  transition: all 0.3s ease;
  padding: 0;
}

.hero-slider-indicators .indicator:hover {
  background: rgba(255, 255, 255, 0.6);
  transform: scale(1.2);
}

.hero-slider-indicators .indicator.active {
  background: var(--white);
  border-color: var(--white);
  width: 30px;
  border-radius: 6px;
}

/* Responsive */
@media (max-width: 768px) {
  .hero {
    padding-top: 100px;
  }
  
  .navbar-logo img {
    height: 80px;
  }
  
  .hero-slider-prev,
  .hero-slider-next {
    width: 40px;
    height: 40px;
    font-size: 14px;
  }
  
  .hero-slider-prev {
    left: var(--spacing-md);
  }
  
  .hero-slider-next {
    right: var(--spacing-md);
  }
  
  .hero-slider-indicators {
    bottom: var(--spacing-md);
  }
  
  .hero-slider-indicators .indicator {
    width: 10px;
    height: 10px;
  }
  
  .hero-slider-indicators .indicator.active {
    width: 24px;
  }
}

.hero-title {
  font-size: var(--font-size-6xl);
  color: var(--white);
  margin-bottom: var(--spacing-lg);
  animation: fadeInUp 0.8s ease;
}

.hero-subtitle {
  font-size: var(--font-size-2xl);
  color: var(--white);
  margin-bottom: var(--spacing-2xl);
  animation: fadeInUp 0.8s ease 0.2s;
  animation-fill-mode: both;
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-lg);
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease 0.4s;
  animation-fill-mode: both;
}

/* ========================================
   CARDS
   ======================================== */

.card {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: var(--spacing-xl);
  transition: all var(--transition-base);
  height: 100%;
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.card-icon {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-lg);
}

.card-title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-md);
  color: var(--dark);
}

.card-text {
  color: var(--gray-dark);
  line-height: 1.7;
}

/* ========================================
   SECTIONS
   ======================================== */

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-4xl);
}

.section-subtitle {
  color: var(--secondary-color);
  font-weight: 600;
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-sm);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.section-title {
  font-size: var(--font-size-4xl);
  color: var(--dark);
  margin-bottom: var(--spacing-md);
}

.section-description {
  font-size: var(--font-size-lg);
  color: var(--gray-dark);
  max-width: 700px;
  margin: 0 auto;
}

/* ========================================
   FOOTER
   ======================================== */

.footer {
  background-color: var(--dark);
  color: var(--gray-light);
  padding: var(--spacing-4xl) 0 var(--spacing-xl);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-3xl);
  margin-bottom: var(--spacing-3xl);
}

.footer-section h4 {
  color: var(--white);
  margin-bottom: var(--spacing-lg);
  font-size: var(--font-size-xl);
}

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

.footer-section a:hover {
  color: var(--secondary-color);
}

.footer-bottom {
  border-top: 1px solid var(--gray-dark);
  padding-top: var(--spacing-xl);
  text-align: center;
  color: var(--gray);
}

.social-icons {
  display: flex;
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.social-icon {
  width: 40px;
  height: 40px;
  background-color: var(--gray-dark);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  transition: all var(--transition-base);
}

.social-icon:hover {
  background-color: var(--secondary-color);
  transform: translateY(-4px);
}

/* ========================================
   WHATSAPP FLOATING BUTTON
   ======================================== */

.whatsapp-float {
  position: fixed;
  width: 60px;
  height: 60px;
  bottom: 30px;
  right: 30px;
  background-color: #25D366;
  color: var(--white);
  border-radius: var(--radius-full);
  text-align: center;
  font-size: 30px;
  box-shadow: var(--shadow-xl);
  z-index: var(--z-fixed);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-base);
  animation: pulse 2s infinite;
}

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 8px 20px rgba(37, 211, 102, 0.4);
}

/* ========================================
   ANIMATIONS
   ======================================== */

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

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

/* ========================================
   UTILITY CLASSES
   ======================================== */

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

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

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

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

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

.bg-gray {
  background-color: var(--gray-lighter);
}

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

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

.p-sm { padding: var(--spacing-sm); }
.p-md { padding: var(--spacing-md); }
.p-lg { padding: var(--spacing-lg); }
.p-xl { padding: var(--spacing-xl); }

/* ========================================
   RESPONSIVE DESIGN (Mobile First)
   ======================================== */

@media (max-width: 991px) {
  :root {
    --font-size-6xl: 2.5rem;
    --font-size-5xl: 2rem;
    --font-size-4xl: 1.75rem;
  }
  
  .navbar-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 300px;
    height: 100vh;
    background-color: var(--white);
    flex-direction: column;
    padding: var(--spacing-4xl) var(--spacing-xl);
    box-shadow: var(--shadow-xl);
    transition: right var(--transition-base);
  }
  
  .navbar-menu.active {
    right: 0;
  }
  
  .navbar-toggle {
    display: block;
  }
  
  .col-6,
  .col-4,
  .col-3 {
    flex: 0 0 100%;
    max-width: 100%;
  }
  
  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }
}

@media (max-width: 767px) {
  .container {
    padding: 0 var(--spacing-md);
  }
  
  .section {
    padding: var(--spacing-3xl) 0;
  }
  
  .hero-title {
    font-size: var(--font-size-4xl);
  }
  
  .whatsapp-float {
    width: 50px;
    height: 50px;
    bottom: 20px;
    right: 20px;
    font-size: 24px;
  }
}