/* ===================================
   Lali Green International - Main CSS
   Version: 1.0
   =================================== */

/* ===================================
   1. CSS Variables & Custom Properties
   =================================== */
:root {
  /* Color Palette from Design System */
  --primary-dark: #12100D;
  --secondary-dark: #281F0B;
  --accent-dark: #0A0A08;
  --brand-green: #44A239;
  --brand-green-hover: #5AB24E;
  --brand-green-dark: #357A2E;
  
  /* Additional Colors */
  --white: #FFFFFF;
  --off-white: #F8F8F8;
  --light-gray: #E5E5E5;
  --medium-gray: #999999;
  --dark-gray: #666666;
  --black: #000000;
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #44A239 0%, #5AB24E 100%);
  --gradient-dark: linear-gradient(180deg, #12100D 0%, #281F0B 100%);
  --gradient-overlay: linear-gradient(180deg, rgba(18,16,13,0.9) 0%, rgba(40,31,11,0.7) 100%);
  --gradient-text: linear-gradient(135deg, #44A239 0%, #7FD074 100%);
  
  /* Typography */
  --font-primary: 'Inter', Arial, sans-serif;
  --font-secondary: 'Poppins', sans-serif;
  
  /* Font Sizes */
  --fs-xxl: clamp(2.5rem, 5vw, 4rem);
  --fs-xl: clamp(2rem, 4vw, 3rem);
  --fs-lg: clamp(1.5rem, 3vw, 2rem);
  --fs-md: clamp(1.125rem, 2vw, 1.25rem);
  --fs-base: 1rem;
  --fs-sm: 0.875rem;
  --fs-xs: 0.75rem;
  
  /* 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;
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 300ms ease-in-out;
  --transition-slow: 500ms ease-in-out;
  --transition-slower: 800ms ease-in-out;
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.15);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.2);
  --shadow-xl: 0 12px 48px rgba(0,0,0,0.3);
  --shadow-glow: 0 0 40px rgba(68,162,57,0.3);
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 20px;
  --radius-full: 9999px;
  
  /* Z-index layers */
  --z-dropdown: 100;
  --z-header: 1000;
  --z-modal: 2000;
  --z-loader: 3000;
}

/* ===================================
   2. Reset & Base Styles
   =================================== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-primary);
  font-size: var(--fs-base);
  line-height: 1.6;
  color: var(--white);
  background-color: var(--primary-dark);
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

/* ===================================
   3. Typography
   =================================== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-secondary);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
  color: var(--white);
}

h1 { font-size: var(--fs-xxl); }
h2 { font-size: var(--fs-xl); }
h3 { font-size: var(--fs-lg); }
h4 { font-size: var(--fs-md); }
h5 { font-size: var(--fs-base); }
h6 { font-size: var(--fs-sm); }

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

a {
  color: var(--brand-green);
  text-decoration: none;
  transition: all var(--transition-base);
}

a:hover {
  color: var(--brand-green-hover);
}

/* Text Gradient Effect */
.text-gradient {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: inline-block;
}

/* ===================================
   4. Layout Components
   =================================== */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

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

/* ===================================
   5. Preloader
   =================================== */
.preloader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: var(--primary-dark);
  z-index: var(--z-loader);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

.preloader.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loader-container {
  text-align: center;
  position: relative;
}

.loader-spinner {
  width: 60px;
  height: 60px;
  border: 3px solid rgba(68, 162, 57, 0.1);
  border-top-color: var(--brand-green);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto var(--spacing-lg);
}

.loader-logo {
  width: 120px;
  height: auto;
  animation: pulse 1.5s ease-in-out infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.8; transform: scale(0.95); }
}

/* ===================================
   6. Header & Navigation
   =================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(18, 16, 13, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: var(--z-header);
  transition: all var(--transition-base);
  border-bottom: 1px solid rgba(68, 162, 57, 0.1);
}

.header.scrolled {
  background: rgba(10, 10, 8, 0.98);
  box-shadow: var(--shadow-lg);
}

.navbar {
  padding: var(--spacing-md) 0;
}

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

.nav-brand .logo {
  height: 45px;
  width: auto;
  transition: transform var(--transition-base);
}

.nav-brand .logo:hover {
  transform: scale(1.05);
}

.nav-menu {
  display: flex;
  align-items: center;
}

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

.nav-link {
  color: var(--light-gray);
  font-weight: 500;
  padding: var(--spacing-sm) var(--spacing-md);
  position: relative;
  transition: all var(--transition-base);
  font-size: var(--fs-sm);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--brand-green);
  transform: translateX(-50%);
  transition: width var(--transition-base);
}

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

.nav-link:hover::after,
.nav-link.active::after {
  width: 70%;
}

/* Dropdown Menu */
.dropdown {
  position: relative;
}

.dropdown-arrow {
  font-size: 0.7em;
  margin-left: var(--spacing-xs);
  transition: transform var(--transition-base);
}

.dropdown:hover .dropdown-arrow {
  transform: rotate(180deg);
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 200px;
  background: rgba(18, 16, 13, 0.98);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(68, 162, 57, 0.2);
  border-radius: var(--radius-md);
  padding: var(--spacing-sm) 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-base);
  list-style: none;
  box-shadow: var(--shadow-xl);
  margin-top: var(--spacing-md);
}

.dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-menu li a {
  display: block;
  padding: var(--spacing-sm) var(--spacing-lg);
  color: var(--light-gray);
  transition: all var(--transition-fast);
  font-size: var(--fs-sm);
}

.dropdown-menu li a:hover {
  background: rgba(68, 162, 57, 0.1);
  color: var(--brand-green);
  padding-left: calc(var(--spacing-lg) + var(--spacing-xs));
}

/* Mobile Navigation Toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
  z-index: var(--z-header);
}

.hamburger-line {
  width: 25px;
  height: 2px;
  background: var(--brand-green);
  transition: all var(--transition-base);
}

.nav-toggle.active .hamburger-line:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active .hamburger-line:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active .hamburger-line:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

/* ===================================
   7. Hero Section
   =================================== */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: var(--gradient-dark);
  margin-top: 60px;
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--gradient-overlay);
  z-index: 2;
}

.hero-particles {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  opacity: 0.5;
}

.hero-container {
  position: relative;
  z-index: 3;
  padding: var(--spacing-3xl) 0;
}

.hero-content {
  max-width: 800px;
  animation: fadeInUp 1s ease-out;
}

.hero-title {
  font-size: var(--fs-xxl);
  font-weight: 800;
  margin-bottom: var(--spacing-lg);
  letter-spacing: -1px;
}

.hero-subtitle {
  font-size: var(--fs-md);
  color: var(--light-gray);
  margin-bottom: var(--spacing-2xl);
  max-width: 600px;
  line-height: 1.8;
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  margin-bottom: var(--spacing-3xl);
}

/* Hero Statistics */
.hero-stats {
  display: flex;
  gap: var(--spacing-3xl);
  padding-top: var(--spacing-2xl);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.stat-number {
  font-size: var(--fs-xl);
  font-weight: 700;
  color: var(--brand-green);
  font-family: var(--font-secondary);
}

.stat-label {
  font-size: var(--fs-sm);
  color: var(--medium-gray);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* Scroll Indicator */
.scroll-indicator {
  position: absolute;
  bottom: var(--spacing-2xl);
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  animation: bounce 2s infinite;
}

.scroll-text {
  font-size: var(--fs-xs);
  color: var(--medium-gray);
  text-transform: uppercase;
  letter-spacing: 2px;
  display: block;
  margin-bottom: var(--spacing-sm);
}

.scroll-arrow {
  width: 20px;
  height: 30px;
  border: 2px solid var(--brand-green);
  border-radius: 15px;
  position: relative;
  margin: 0 auto;
}

.scroll-arrow::before {
  content: '';
  position: absolute;
  top: 8px;
  left: 50%;
  width: 4px;
  height: 4px;
  background: var(--brand-green);
  border-radius: 50%;
  transform: translateX(-50%);
  animation: scrollDot 1.5s infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(10px); }
}

@keyframes scrollDot {
  0% { top: 8px; opacity: 0; }
  40% { opacity: 1; }
  80% { top: 16px; opacity: 0; }
  100% { opacity: 0; }
}

/* ===================================
   8. Buttons
   =================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  font-weight: 600;
  font-size: var(--fs-sm);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-radius: var(--radius-full);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 0;
  height: 100%;
  background: rgba(255, 255, 255, 0.1);
  transition: width var(--transition-base);
  z-index: -1;
}

.btn:hover::before {
  width: 100%;
}

.btn-primary {
  background: var(--gradient-primary);
  color: var(--white);
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 40px rgba(68, 162, 57, 0.4);
}

.btn-outline {
  background: transparent;
  color: var(--brand-green);
  border-color: var(--brand-green);
}

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

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

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

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

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

.btn-icon {
  transition: transform var(--transition-base);
}

.btn:hover .btn-icon {
  transform: translateX(4px);
}

/* ===================================
   9. Services Section
   =================================== */
.services-section {
  padding: var(--spacing-4xl) 0;
  background: var(--secondary-dark);
  position: relative;
}

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

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.section-tag {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-md);
  background: rgba(68, 162, 57, 0.1);
  color: var(--brand-green);
  font-size: var(--fs-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  border-radius: var(--radius-full);
  margin-bottom: var(--spacing-md);
  border: 1px solid rgba(68, 162, 57, 0.2);
}

.section-title {
  font-size: var(--fs-xl);
  margin-bottom: var(--spacing-lg);
}

.section-subtitle {
  max-width: 600px;
  margin: 0 auto;
  color: var(--medium-gray);
  font-size: var(--fs-md);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-xl);
}

.service-card {
  background: rgba(18, 16, 13, 0.6);
  border: 1px solid rgba(68, 162, 57, 0.1);
  border-radius: var(--radius-lg);
  padding: var(--spacing-2xl);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.service-card:hover {
  transform: translateY(-5px);
  border-color: var(--brand-green);
  box-shadow: var(--shadow-xl);
  background: rgba(18, 16, 13, 0.8);
}

.service-card:hover::before {
  transform: scaleX(1);
}

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

.icon-wrapper {
  width: 60px;
  height: 60px;
  background: rgba(68, 162, 57, 0.1);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--brand-green);
  transition: all var(--transition-base);
}

.service-card:hover .icon-wrapper {
  background: var(--brand-green);
  color: var(--white);
  transform: scale(1.1) rotate(5deg);
}

.service-title {
  font-size: var(--fs-md);
  margin-bottom: var(--spacing-md);
}

.service-description {
  color: var(--medium-gray);
  margin-bottom: var(--spacing-lg);
  line-height: 1.7;
}

.service-link {
  color: var(--brand-green);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  transition: all var(--transition-base);
}

.service-link:hover {
  gap: var(--spacing-sm);
}

/* ===================================
   10. About Section
   =================================== */
.about-section {
  padding: var(--spacing-4xl) 0;
  background: var(--primary-dark);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
}

.about-content .section-tag {
  margin-bottom: var(--spacing-md);
}

.about-text {
  font-size: var(--fs-base);
  line-height: 1.8;
  margin-bottom: var(--spacing-lg);
  color: var(--light-gray);
}

.about-features {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  margin: var(--spacing-2xl) 0;
}

.feature-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: rgba(68, 162, 57, 0.05);
  border-radius: var(--radius-md);
  border: 1px solid rgba(68, 162, 57, 0.1);
  transition: all var(--transition-base);
}

.feature-item:hover {
  background: rgba(68, 162, 57, 0.1);
  transform: translateX(5px);
}

.feature-icon {
  color: var(--brand-green);
}

.about-visual {
  position: relative;
}

.visual-container {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.about-image {
  width: 100%;
  height: 500px;
  object-fit: cover;
  border-radius: var(--radius-lg);
}

.experience-badge {
  position: absolute;
  bottom: var(--spacing-xl);
  right: var(--spacing-xl);
  background: var(--gradient-primary);
  padding: var(--spacing-lg) var(--spacing-xl);
  border-radius: var(--radius-lg);
  text-align: center;
  box-shadow: var(--shadow-xl);
}

.badge-number {
  display: block;
  font-size: var(--fs-xl);
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
}

.badge-text {
  font-size: var(--fs-sm);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* ===================================
   11. CTA Section
   =================================== */
.cta-section {
  padding: var(--spacing-4xl) 0;
  background: var(--gradient-primary);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
  animation: rotate 30s linear infinite;
}

@keyframes rotate {
  to { transform: rotate(360deg); }
}

.cta-wrapper {
  position: relative;
  z-index: 1;
  text-align: center;
}

.cta-title {
  font-size: var(--fs-xl);
  margin-bottom: var(--spacing-md);
}

.cta-subtitle {
  font-size: var(--fs-md);
  margin-bottom: var(--spacing-2xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  opacity: 0.95;
}

.cta-buttons {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* ===================================
   12. Partners Section
   =================================== */
.partners-section {
  padding: var(--spacing-3xl) 0;
  background: var(--secondary-dark);
  overflow: hidden;
}

.partners-slider {
  margin-top: var(--spacing-2xl);
  position: relative;
}

.partners-track {
  display: flex;
  gap: var(--spacing-3xl);
  animation: slide 20s linear infinite;
  width: fit-content;
}

.partner-item {
  flex-shrink: 0;
  width: 150px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  filter: grayscale(100%);
  opacity: 0.7;
  transition: all var(--transition-base);
}

.partner-item:hover {
  filter: grayscale(0%);
  opacity: 1;
  transform: scale(1.05);
}

.partner-item img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

@keyframes slide {
  to { transform: translateX(-50%); }
}

/* ===================================
   13. Footer
   =================================== */
.footer {
  background: var(--accent-dark);
  color: var(--light-gray);
  position: relative;
}

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

.footer-top {
  padding: var(--spacing-3xl) 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 2fr;
  gap: var(--spacing-3xl);
}

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

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

.footer-description {
  margin-bottom: var(--spacing-xl);
  color: var(--medium-gray);
  line-height: 1.8;
}

.social-links {
  display: flex;
  gap: var(--spacing-sm);
}

.social-link {
  width: 40px;
  height: 40px;
  background: rgba(68, 162, 57, 0.1);
  border: 1px solid rgba(68, 162, 57, 0.2);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
}

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

.social-link img {
  width: 20px;
  height: 20px;
  filter: brightness(0) invert(1);
}

.footer-title {
  font-size: var(--fs-md);
  margin-bottom: var(--spacing-lg);
  color: var(--white);
}

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

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

.footer-links a {
  color: var(--medium-gray);
  transition: all var(--transition-base);
  display: inline-block;
}

.footer-links a:hover {
  color: var(--brand-green);
  transform: translateX(5px);
}

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

.contact-item {
  display: flex;
  gap: var(--spacing-md);
  align-items: flex-start;
}

.contact-item svg {
  color: var(--brand-green);
  flex-shrink: 0;
  margin-top: 2px;
}

.contact-item a {
  color: var(--medium-gray);
  transition: color var(--transition-base);
}

.contact-item a:hover {
  color: var(--brand-green);
}

.footer-bottom {
  padding: var(--spacing-lg) 0;
  background: rgba(0, 0, 0, 0.3);
}

.footer-bottom-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.copyright {
  color: var(--medium-gray);
  font-size: var(--fs-sm);
}

.footer-legal {
  display: flex;
  gap: var(--spacing-xl);
}

.footer-legal a {
  color: var(--medium-gray);
  font-size: var(--fs-sm);
  transition: color var(--transition-base);
}

.footer-legal a:hover {
  color: var(--brand-green);
}

/* ===================================
   14. Back to Top Button
   =================================== */
.back-to-top {
  position: fixed;
  bottom: var(--spacing-xl);
  right: var(--spacing-xl);
  width: 50px;
  height: 50px;
  background: var(--gradient-primary);
  border: none;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition-base);
  z-index: var(--z-dropdown);
  box-shadow: var(--shadow-lg);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
}

.back-to-top svg {
  color: var(--white);
}

/* ===================================
   15. Animations
   =================================== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fade-up {
  animation: fadeInUp 0.8s ease-out forwards;
}

.animate-fade-up-delay {
  animation: fadeInUp 0.8s ease-out 0.2s forwards;
  opacity: 0;
}

.animate-fade-up-delay-2 {
  animation: fadeInUp 0.8s ease-out 0.4s forwards;
  opacity: 0;
}

/* Fade In animations for scroll triggers */
[data-aos="fade-up"] {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s ease-out;
}

[data-aos="fade-up"].aos-animate {
  opacity: 1;
  transform: translateY(0);
}

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

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }
.mt-5 { margin-top: var(--spacing-2xl); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }
.mb-5 { margin-bottom: var(--spacing-2xl); }

.pt-1 { padding-top: var(--spacing-sm); }
.pt-2 { padding-top: var(--spacing-md); }
.pt-3 { padding-top: var(--spacing-lg); }
.pt-4 { padding-top: var(--spacing-xl); }
.pt-5 { padding-top: var(--spacing-2xl); }

.pb-1 { padding-bottom: var(--spacing-sm); }
.pb-2 { padding-bottom: var(--spacing-md); }
.pb-3 { padding-bottom: var(--spacing-lg); }
.pb-4 { padding-bottom: var(--spacing-xl); }
.pb-5 { padding-bottom: var(--spacing-2xl); }

.d-none { display: none; }
.d-block { display: block; }
.d-flex { display: flex; }
.d-grid { display: grid; }

.position-relative { position: relative; }
.position-absolute { position: absolute; }
.position-fixed { position: fixed; }

.w-100 { width: 100%; }
.h-100 { height: 100%; }

/* ===================================
   17. Responsive Design (Tablet)
   =================================== */
@media screen and (max-width: 1199px) {
  .container {
    max-width: 960px;
  }
  
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .about-grid {
    gap: var(--spacing-2xl);
  }
  
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-2xl);
  }
}

@media screen and (max-width: 991px) {
  :root {
    --fs-xxl: 2.5rem;
    --fs-xl: 2rem;
    --fs-lg: 1.5rem;
  }
  
  .nav-list {
    gap: var(--spacing-md);
  }
  
  .hero-stats {
    gap: var(--spacing-2xl);
  }
}

/* ===================================
   18. Responsive Design (Mobile)
   =================================== */
@media screen and (max-width: 768px) {
  /* Typography adjustments */
  :root {
    --fs-xxl: 2rem;
    --fs-xl: 1.5rem;
    --fs-lg: 1.25rem;
    --fs-md: 1rem;
  }
  
  /* Navigation Mobile */
  .nav-toggle {
    display: flex;
  }
  
  .nav-menu {
    position: fixed;
    top: 60px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 60px);
    background: rgba(18, 16, 13, 0.98);
    backdrop-filter: blur(12px);
    transition: left var(--transition-base);
    z-index: var(--z-header);
    overflow-y: auto;
  }
  
  .nav-menu.active {
    left: 0;
  }
  
  .nav-list {
    flex-direction: column;
    padding: var(--spacing-2xl) var(--spacing-lg);
    gap: 0;
  }
  
  .nav-item {
    width: 100%;
  }
  
  .nav-link {
    display: block;
    padding: var(--spacing-md);
    font-size: var(--fs-base);
  }
  
  .dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: none;
    background: rgba(0, 0, 0, 0.3);
    margin-top: 0;
    display: none;
  }
  
  .dropdown.active .dropdown-menu {
    display: block;
  }
  
  /* Hero Mobile */
  .hero-section {
    min-height: calc(100vh - 60px);
  }
  
  .hero-buttons {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .hero-stats {
    flex-direction: column;
    gap: var(--spacing-lg);
  }
  
  /* Services Mobile */
  .services-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .service-card {
    padding: var(--spacing-lg);
  }
  
  /* About Mobile */
  .about-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }
  
  .about-visual {
    order: -1;
  }
  
  .about-image {
    height: 300px;
  }
  
  .experience-badge {
    bottom: var(--spacing-md);
    right: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
  }
  
  /* CTA Mobile */
  .cta-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .btn {
    width: 100%;
    justify-content: center;
  }
  
  /* Footer Mobile */
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }
  
  .footer-bottom-content {
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: center;
  }
  
  .footer-legal {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  
  /* Back to Top Mobile */
  .back-to-top {
    bottom: var(--spacing-md);
    right: var(--spacing-md);
    width: 40px;
    height: 40px;
  }
  
  /* Utilities Mobile */
  .container {
    padding: 0 var(--spacing-lg);
  }
  
  .section {
    padding: var(--spacing-3xl) 0;
  }
}

@media screen and (max-width: 480px) {
  :root {
    --fs-xxl: 1.75rem;
    --fs-xl: 1.375rem;
    --fs-lg: 1.125rem;
  }
  
  .hero-title {
    font-size: 1.75rem;
    line-height: 1.3;
  }
  
  .section-title {
    font-size: 1.5rem;
  }
  
  .stat-number {
    font-size: 1.75rem;
  }
  
  .services-grid {
    grid-template-columns: 1fr;
  }
  
  .service-card {
    min-width: unset;
  }
}

/* ===================================
   19. Print Styles
   =================================== */
@media print {
  .header,
  .footer,
  .back-to-top,
  .nav-toggle,
  .scroll-indicator {
    display: none;
  }
  
  body {
    color: black;
    background: white;
  }
  
  .container {
    max-width: 100%;
  }
  
  a {
    color: black;
    text-decoration: underline;
  }
}