/* ========================================
   CSS VARIABLES
   ======================================== */
:root {
  /* Colors */
  --primary-color: #34d399;
  --primary-dark: #10b981;
  --accent-color: #14b8a6;
  --text-dark: #1f2937;
  --text-light: #6b7280;
  --bg-light: #f0fdfa;
  --white: #ffffff;
  --shadow: rgba(0, 0, 0, 0.08);
  --shadow-hover: rgba(0, 0, 0, 0.12);
  --hero-gradient-start: #d9fff5;
  --hero-gradient-mid: #d0fff1;
  --hero-gradient-end: #c5fff3;
  --star-color: #fbbf24;
  --border-color: #e5e7eb;
  --error-color: #ef4444;
  --success-bg: #ccfbf1;
  --success-color: #14b8a6;
  --success-text: #0f766e;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  
  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Navbar Height */
  --navbar-height: 70px;
}

/* ========================================
   RESET & BASE STYLES
   ======================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

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

/* ========================================
   TYPOGRAPHY
   ======================================== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  color: var(--text-dark);
}

h1 {
  font-size: 3rem;
}

h2 {
  font-size: 2.5rem;
}

h3 {
  font-size: 2rem;
}

p {
  color: var(--text-light);
  font-size: 1rem;
  line-height: 1.7;
}

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

/* ========================================
   UTILITY CLASSES
   ======================================== */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

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

.section-title {
  text-align: center;
  margin-bottom: var(--spacing-sm);
  color: var(--text-dark);
}

.section-description {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--spacing-lg);
  color: var(--text-light);
  font-size: 1.125rem;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.875rem 2rem;
  border-radius: var(--radius-md);
  font-weight: 500;
  font-size: 1rem;
  cursor: pointer;
  transition: all var(--transition-normal);
  border: none;
  text-align: center;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  color: var(--white);
  box-shadow: 0 4px 15px rgba(30, 64, 175, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(30, 64, 175, 0.4);
}

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

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

/* Fade In Animation */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========================================
   NAVIGATION BAR
   ======================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--navbar-height);
  background: transparent;
  z-index: 1000;
  transition: all var(--transition-normal);
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 20px var(--shadow);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
}

.logo a {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-dark);
  transition: opacity var(--transition-fast);
}

.logo img {
  height: 45px;
  width: auto;
  object-fit: contain;
}

.logo:hover a {
  opacity: 0.8;
}

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

.nav-link {
  color: var(--text-dark);
  font-weight: 500;
  font-size: 0.95rem;
  padding: 0.5rem 0;
  position: relative;
  transition: color var(--transition-fast);
}

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

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

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

/* Hamburger Menu */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.hamburger span {
  width: 25px;
  height: 3px;
  background: var(--text-dark);
  border-radius: 2px;
  transition: all var(--transition-normal);
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(8px, 8px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

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

/* ========================================
   HERO SECTION
   ======================================== */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--hero-gradient-start) 0%, var(--hero-gradient-mid) 50%, var(--hero-gradient-end) 100%);
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.hero-container {
  position: relative;
  z-index: 1;
  text-align: center;
  padding-bottom: 8rem;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: var(--spacing-md);
  line-height: 1.1;
}

.hero-description {
  font-size: 1.25rem;
  color: var(--text-light);
  margin-bottom: var(--spacing-lg);
  line-height: 1.8;
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: var(--spacing-lg);
}

.hero-buttons .btn-secondary {
  border-color: var(--text-dark);
  color: var(--text-dark);
}

.hero-buttons .btn-secondary:hover {
  background: var(--text-dark);
  color: var(--white);
}

.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  animation: bounce 2s infinite;
}

.scroll-indicator i {
  font-size: 2rem;
  color: var(--text-dark);
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateX(-50%) translateY(0);
  }
  40% {
    transform: translateX(-50%) translateY(-10px);
  }
  60% {
    transform: translateX(-50%) translateY(-5px);
  }
}

/* ========================================
   ABOUT SECTION
   ======================================== */
.about-section {
  background: var(--white);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.stat-card {
  text-align: center;
  padding: var(--spacing-md);
  background: var(--bg-light);
  border-radius: var(--radius-md);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.stat-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px var(--shadow-hover);
}

.stat-icon {
  font-size: 3rem;
  color: var(--primary-color);
  margin-bottom: var(--spacing-sm);
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: var(--spacing-xs);
}

.stat-label {
  color: var(--text-light);
  font-size: 1rem;
}

/* ========================================
   SERVICES SECTION
   ======================================== */
.services-section {
  background: var(--bg-light);
}

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

.service-card {
  background: var(--white);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  box-shadow: 0 4px 6px var(--shadow);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  cursor: pointer;
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 30px var(--shadow-hover);
}

.service-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-sm);
}

.service-icon i {
  font-size: 1.75rem;
  color: var(--white);
}

.service-title {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-sm);
  color: var(--text-dark);
}

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

/* ========================================
   WHY US SECTION
   ======================================== */
.why-us-section {
  background: var(--white);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
}

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

.feature-icon {
  width: 80px;
  height: 80px;
  background: var(--bg-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-sm);
  transition: all var(--transition-normal);
}

.feature-item:hover .feature-icon {
  background: var(--primary-color);
  transform: scale(1.1);
}

.feature-icon i {
  font-size: 2rem;
  color: var(--primary-color);
  transition: color var(--transition-normal);
}

.feature-item:hover .feature-icon i {
  color: var(--white);
}

.feature-title {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-sm);
  color: var(--text-dark);
}

.feature-description {
  color: var(--text-light);
  line-height: 1.7;
}

/* ========================================
   PROCESS SECTION
   ======================================== */
.process-section {
  background: var(--bg-light);
}

.process-timeline {
  max-width: 900px;
  margin: 0 auto;
  position: relative;
}

.process-step {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
  position: relative;
}

.process-step:last-child {
  margin-bottom: 0;
}

.step-number {
  flex-shrink: 0;
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  box-shadow: 0 4px 15px rgba(30, 64, 175, 0.3);
}

.step-content {
  flex: 1;
  padding: var(--spacing-sm);
  background: var(--white);
  border-radius: var(--radius-md);
  box-shadow: 0 4px 6px var(--shadow);
}

.step-title {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-xs);
  color: var(--text-dark);
}

.step-description {
  color: var(--text-light);
  line-height: 1.7;
}

/* ========================================
   TESTIMONIALS SECTION
   ======================================== */
.testimonials-section {
  background: var(--white);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
}

.testimonial-card {
  background: var(--bg-light);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  box-shadow: 0 4px 6px var(--shadow);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.testimonial-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px var(--shadow-hover);
}

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

.testimonial-rating i {
  color: var(--star-color);
  font-size: 1rem;
  margin-right: 2px;
}

.testimonial-text {
  font-size: 1rem;
  color: var(--text-dark);
  line-height: 1.7;
  margin-bottom: var(--spacing-md);
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.author-avatar {
  width: 50px;
  height: 50px;
  background: var(--primary-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.author-avatar i {
  font-size: 1.5rem;
  color: var(--white);
}

.author-name {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 2px;
}

.author-position {
  font-size: 0.875rem;
  color: var(--text-light);
}

/* ========================================
   CONTACT SECTION
   ======================================== */
.contact-section {
  background: var(--bg-light);
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  max-width: 1000px;
  margin: 0 auto;
}

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

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

.info-icon {
  width: 50px;
  height: 50px;
  background: var(--primary-color);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all var(--transition-normal);
  cursor: pointer;
}

.info-icon:hover {
  background: var(--primary-dark);
  transform: translateY(-3px);
  box-shadow: 0 4px 12px var(--shadow-hover);
}

.info-icon i {
  font-size: 1.25rem;
  color: var(--white);
  transition: transform var(--transition-fast);
}

.info-icon:hover i {
  transform: scale(1.1);
}

.info-text h3 {
  font-size: 1.125rem;
  margin-bottom: 0.25rem;
  color: var(--text-dark);
}

.info-text p {
  font-size: 1rem;
  color: var(--text-light);
}

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

.social-link {
  width: 45px;
  height: 45px;
  background: var(--white);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-normal);
  box-shadow: 0 2px 8px var(--shadow);
}

.social-link:hover {
  background: var(--primary-color);
  transform: translateY(-3px);
  box-shadow: 0 4px 12px var(--shadow-hover);
}

.social-link i {
  color: var(--primary-color);
  font-size: 1.125rem;
  transition: color var(--transition-fast);
}

.social-link:hover i {
  color: var(--white);
}

/* Contact Form */
.contact-form {
  background: var(--white);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  box-shadow: 0 4px 6px var(--shadow);
}

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

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

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.875rem;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-family: var(--font-family);
  font-size: 1rem;
  color: var(--text-dark);
  transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
}

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

.error-message {
  display: block;
  color: var(--error-color);
  font-size: 0.875rem;
  margin-top: 0.25rem;
  min-height: 1.25rem;
}

.btn-submit {
  width: 100%;
  margin-top: var(--spacing-sm);
}

.form-success {
  display: none;
  text-align: center;
  padding: var(--spacing-md);
  background: var(--success-bg);
  border-radius: var(--radius-sm);
  margin-top: var(--spacing-sm);
}

.form-success.show {
  display: block;
}

.form-success i {
  font-size: 2rem;
  color: var(--success-color);
  margin-bottom: var(--spacing-xs);
}

.form-success p {
  color: var(--success-text);
  font-weight: 500;
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
  background: var(--text-dark);
  color: var(--white);
  padding: var(--spacing-lg) 0 var(--spacing-md);
}

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

.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: var(--spacing-sm);
}

.footer-logo img {
  height: 40px;
  width: auto;
  object-fit: contain;
  background: var(--white);
  padding: 0.25rem;
  border-radius: var(--radius-sm);
}

.footer-description {
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.7;
}

.footer-title {
  font-size: 1.125rem;
  margin-bottom: var(--spacing-sm);
  color: var(--white);
}

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

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  transition: color var(--transition-fast);
}

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

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

.footer-social a {
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-normal);
}

.footer-social a:hover {
  background: var(--primary-color);
  transform: translateY(-3px);
}

.footer-social i {
  color: var(--white);
  font-size: 1rem;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.footer-bottom p {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.875rem;
}

.footer-bottom-links {
  display: flex;
  gap: var(--spacing-md);
}

.footer-bottom-links a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.875rem;
  transition: color var(--transition-fast);
}

.footer-bottom-links a:hover {
  color: var(--white);
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */

/* Tablet (768px+) */
@media (max-width: 1024px) {
  .contact-content {
    grid-template-columns: 1fr;
  }
}

/* Mobile (< 768px) */
@media (max-width: 768px) {
  /* Typography */
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.75rem;
  }
  
  h3 {
    font-size: 1.5rem;
  }
  
  .hero-title {
    font-size: 2.25rem;
  }
  
  .hero-description {
    font-size: 1rem;
  }
  
  /* Spacing */
  .section {
    padding: var(--spacing-lg) 0;
  }
  
  /* Navigation */
  .hamburger {
    display: flex;
  }
  
  .nav-menu {
    position: fixed;
    top: var(--navbar-height);
    left: 0;
    width: 100%;
    height: calc(100vh - var(--navbar-height));
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    flex-direction: column;
    justify-content: flex-start;
    padding: var(--spacing-md);
    gap: var(--spacing-sm);
    transform: translateX(-100%);
    transition: transform var(--transition-normal);
  }
  
  .nav-menu.active {
    transform: translateX(0);
  }
  
  .nav-link {
    font-size: 1.125rem;
    padding: var(--spacing-sm) 0;
    width: 100%;
    text-align: center;
  }
  
  /* Hero */
  .hero-buttons {
    flex-direction: column;
    align-items: stretch;
  }
  
  .hero-buttons .btn {
    width: 100%;
  }
  
  /* Grids */
  .services-grid {
    grid-template-columns: 1fr;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  
  .testimonials-grid {
    grid-template-columns: 1fr;
  }
  
  .stats-grid {
    grid-template-columns: 1fr 1fr;
  }
  
  /* Process */
  .process-step {
    flex-direction: column;
    text-align: center;
  }
  
  .step-number {
    margin: 0 auto;
  }
  
  /* Footer */
  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .footer-logo {
    justify-content: center;
  }
  
  .footer-social {
    justify-content: center;
  }
  
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

/* Small Mobile (< 480px) */
@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }
  
  .hero-title {
    font-size: 1.875rem;
  }
  
  .btn {
    padding: 0.75rem 1.5rem;
    font-size: 0.9375rem;
  }
}

/* Large Desktop (1280px+) */
@media (min-width: 1280px) {
  .container {
    max-width: 1280px;
  }
  
  .services-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}