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

:root {
  /* Colors */
  --primary-color: #3b82f6;
  --primary-dark: #2563eb;
  --primary-light: #60a5fa;
  --secondary-color: #8b5cf6;
  --accent-color: #10b981;
  --warning-color: #f59e0b;
  --error-color: #ef4444;
  --success-color: #10b981;

  /* Grays */
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;

  /* Typography */
  --font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --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;

  /* Spacing */
  --spacing-1: 0.25rem;
  --spacing-2: 0.5rem;
  --spacing-3: 0.75rem;
  --spacing-4: 1rem;
  --spacing-5: 1.25rem;
  --spacing-6: 1.5rem;
  --spacing-8: 2rem;
  --spacing-10: 2.5rem;
  --spacing-12: 3rem;
  --spacing-16: 4rem;
  --spacing-20: 5rem;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-2xl: 1rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-normal: 300ms ease-in-out;
  --transition-slow: 500ms ease-in-out;

  /* Z-index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
  --z-toast: 1080;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--gray-800);
  background-color: #ffffff;
  overflow-x: hidden;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-6);
}

@media (max-width: 768px) {
  .container {
    padding: 0 var(--spacing-4);
  }
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: var(--spacing-4);
}

h1 {
  font-size: var(--font-size-4xl);
}
h2 {
  font-size: var(--font-size-3xl);
}
h3 {
  font-size: var(--font-size-2xl);
}
h4 {
  font-size: var(--font-size-xl);
}
h5 {
  font-size: var(--font-size-lg);
}
h6 {
  font-size: var(--font-size-base);
}

p {
  margin-bottom: var(--spacing-4);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-3) var(--spacing-6);
  font-size: var(--font-size-sm);
  font-weight: 500;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  border-color: var(--primary-color);
}

.btn-primary:hover:not(:disabled) {
  background: linear-gradient(135deg, var(--primary-dark), #7c3aed);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

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

.btn-outline:hover:not(:disabled) {
  background: var(--primary-color);
  color: white;
  transform: translateY(-1px);
}

.btn-large {
  padding: var(--spacing-4) var(--spacing-8);
  font-size: var(--font-size-base);
}

.btn i {
  margin-right: var(--spacing-2);
}

.btn-loader {
  display: none;
}

/* Loading Screen */
.loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
  transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

.loading-screen.hidden {
  opacity: 0;
  visibility: hidden;
}

.loading-content {
  text-align: center;
  color: white;
}

.loading-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-bottom: var(--spacing-6);
}

.loading-logo i {
  margin-right: var(--spacing-3);
  font-size: var(--font-size-3xl);
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-top: 3px solid white;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto var(--spacing-4);
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

/* Progress Bar */
.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: rgba(59, 130, 246, 0.1);
  z-index: var(--z-fixed);
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  width: 0%;
  transition: width var(--transition-fast);
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--gray-200);
  z-index: var(--z-fixed);
  transition: all var(--transition-fast);
}

.header.scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow-md);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-4) 0;
}

.nav-brand {
  display: flex;
  align-items: center;
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--primary-color);
  text-decoration: none;
}

.nav-brand i {
  margin-right: var(--spacing-2);
  font-size: var(--font-size-2xl);
}

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

.nav-list {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-list li {
  margin: 0 var(--spacing-4);
}

.nav-link {
  color: var(--gray-700);
  text-decoration: none;
  font-weight: 500;
  padding: var(--spacing-2) 0;
  position: relative;
  transition: color var(--transition-fast);
}

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

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

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-4);
}

.auth-buttons {
  display: flex;
  gap: var(--spacing-3);
}

.user-menu {
  position: relative;
}

.user-avatar {
  display: flex;
  align-items: center;
  cursor: pointer;
  padding: var(--spacing-2);
  border-radius: var(--radius-lg);
  transition: background-color var(--transition-fast);
}

.user-avatar:hover {
  background-color: var(--gray-100);
}

.user-avatar img {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  margin-right: var(--spacing-2);
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  right: 0;
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  min-width: 200px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-fast);
  z-index: var(--z-dropdown);
}

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

.dropdown-item {
  display: flex;
  align-items: center;
  width: 100%;
  padding: var(--spacing-3) var(--spacing-4);
  color: var(--gray-700);
  text-decoration: none;
  border: none;
  background: none;
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.dropdown-item:hover {
  background-color: var(--gray-50);
}

.dropdown-item i {
  margin-right: var(--spacing-3);
  width: 16px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-2);
}

.nav-toggle span {
  width: 25px;
  height: 3px;
  background: var(--gray-700);
  margin: 2px 0;
  transition: all var(--transition-fast);
}

/* Hero Section */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
}

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

.hero-gradient {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-16);
  align-items: center;
  padding: var(--spacing-20) 0;
}

.hero-title {
  font-size: var(--font-size-5xl);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: var(--spacing-6);
}

.gradient-text {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  font-size: var(--font-size-lg);
  color: var(--gray-600);
  margin-bottom: var(--spacing-8);
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: var(--spacing-4);
  margin-bottom: var(--spacing-12);
}

.hero-stats {
  display: flex;
  gap: var(--spacing-8);
}

.stat {
  text-align: center;
}

.stat-number {
  display: block;
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--primary-color);
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--gray-600);
  margin-top: var(--spacing-1);
}

.hero-visual {
  position: relative;
}

.hero-image {
  position: relative;
  z-index: 1;
}

.hero-mockup {
  border-radius: var(--radius-2xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  transform: perspective(1000px) rotateY(-15deg) rotateX(10deg);
  transition: transform var(--transition-slow);
}

.hero-mockup:hover {
  transform: perspective(1000px) rotateY(-10deg) rotateX(5deg);
}

.hero-mockup img {
  width: 100%;
  height: auto;
  display: block;
}

.floating-card {
  position: absolute;
  background: white;
  padding: var(--spacing-4);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  animation: float 6s ease-in-out infinite;
}

.floating-card i {
  font-size: var(--font-size-xl);
  color: var(--primary-color);
}

.floating-card span {
  font-weight: 600;
  color: var(--gray-700);
}

.card-1 {
  top: 10%;
  right: -10%;
  animation-delay: 0s;
}

.card-2 {
  bottom: 30%;
  left: -15%;
  animation-delay: 2s;
}

.card-3 {
  top: 60%;
  right: -5%;
  animation-delay: 4s;
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-20px);
  }
}

/* Sections */
.section {
  padding: var(--spacing-20) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-16);
}

.section-title {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  margin-bottom: var(--spacing-4);
}

.section-description {
  font-size: var(--font-size-lg);
  color: var(--gray-600);
  max-width: 600px;
  margin: 0 auto;
}

/* About Section */
.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-16);
  align-items: center;
}

.about-text h3 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-4);
}

.about-text p {
  color: var(--gray-600);
  margin-bottom: var(--spacing-8);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-6);
}

.feature-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-4);
}

.feature-item i {
  font-size: var(--font-size-xl);
  color: var(--primary-color);
  margin-top: var(--spacing-1);
}

.feature-item h4 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-2);
}

.feature-item p {
  color: var(--gray-600);
  margin: 0;
}

.about-visual {
  position: relative;
}

.about-image {
  position: relative;
  border-radius: var(--radius-2xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.about-image img {
  width: 100%;
  height: auto;
  display: block;
}

.experience-badge {
  position: absolute;
  bottom: var(--spacing-6);
  right: var(--spacing-6);
  background: white;
  padding: var(--spacing-6);
  border-radius: var(--radius-xl);
  text-align: center;
  box-shadow: var(--shadow-lg);
}

.experience-number {
  display: block;
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--primary-color);
}

.experience-text {
  font-size: var(--font-size-sm);
  color: var(--gray-600);
  font-weight: 600;
}

/* Services Section */
.services {
  background: var(--gray-50);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-8);
}

.service-card {
  background: white;
  padding: var(--spacing-8);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  transform: scaleX(0);
  transition: transform var(--transition-normal);
}

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

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
}

.service-card.featured {
  border: 2px solid var(--primary-color);
  transform: scale(1.05);
}

.service-badge {
  position: absolute;
  top: var(--spacing-4);
  right: var(--spacing-4);
  background: var(--primary-color);
  color: white;
  padding: var(--spacing-1) var(--spacing-3);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 600;
}

.service-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-6);
}

.service-icon i {
  font-size: var(--font-size-2xl);
  color: white;
}

.service-card h3 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-4);
}

.service-card p {
  color: var(--gray-600);
  margin-bottom: var(--spacing-6);
}

.service-features {
  list-style: none;
  margin-bottom: var(--spacing-6);
}

.service-features li {
  display: flex;
  align-items: center;
  margin-bottom: var(--spacing-2);
  color: var(--gray-600);
}

.service-features li::before {
  content: "✓";
  color: var(--success-color);
  font-weight: 700;
  margin-right: var(--spacing-3);
}

.service-link {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  transition: color var(--transition-fast);
}

.service-link:hover {
  color: var(--primary-dark);
}

.service-link i {
  margin-left: var(--spacing-2);
  transition: transform var(--transition-fast);
}

.service-link:hover i {
  transform: translateX(3px);
}

/* Portfolio Section */
.portfolio-filters {
  display: flex;
  justify-content: center;
  gap: var(--spacing-4);
  margin-bottom: var(--spacing-12);
  flex-wrap: wrap;
}

.filter-btn {
  padding: var(--spacing-3) var(--spacing-6);
  background: white;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-full);
  color: var(--gray-600);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--primary-color);
  border-color: var(--primary-color);
  color: white;
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-8);
  margin-bottom: var(--spacing-12);
}

.portfolio-item {
  background: white;
  border-radius: var(--radius-2xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
  cursor: pointer;
}

.portfolio-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
}

.portfolio-image {
  position: relative;
  overflow: hidden;
  height: 250px;
}

.portfolio-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.portfolio-item:hover .portfolio-image img {
  transform: scale(1.1);
}

.portfolio-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.9), rgba(139, 92, 246, 0.9));
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.portfolio-item:hover .portfolio-overlay {
  opacity: 1;
}

.portfolio-actions {
  display: flex;
  gap: var(--spacing-4);
}

.portfolio-action {
  width: 50px;
  height: 50px;
  background: white;
  border: none;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-color);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.portfolio-action:hover {
  transform: scale(1.1);
}

.portfolio-content {
  padding: var(--spacing-6);
}

.portfolio-category {
  color: var(--primary-color);
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.portfolio-title {
  font-size: var(--font-size-xl);
  margin: var(--spacing-2) 0 var(--spacing-3);
}

.portfolio-description {
  color: var(--gray-600);
  margin-bottom: var(--spacing-4);
}

.portfolio-tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-2);
}

.tech-tag {
  background: var(--gray-100);
  color: var(--gray-700);
  padding: var(--spacing-1) var(--spacing-3);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 500;
}

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

/* Testimonials Section */
.testimonials {
  background: var(--gray-50);
}

.testimonials-slider {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-2xl);
  margin-bottom: var(--spacing-8);
}

.testimonial-track {
  display: flex;
  transition: transform var(--transition-slow);
}

.testimonial-card {
  min-width: 100%;
  background: white;
  padding: var(--spacing-12);
  text-align: center;
}

.testimonial-text {
  font-size: var(--font-size-lg);
  color: var(--gray-700);
  margin-bottom: var(--spacing-8);
  line-height: 1.7;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-4);
}

.author-avatar {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-full);
  object-fit: cover;
}

.author-name {
  font-weight: 600;
  color: var(--gray-800);
}

.author-role {
  color: var(--gray-600);
  font-size: var(--font-size-sm);
}

.testimonials-controls {
  display: flex;
  justify-content: center;
  gap: var(--spacing-4);
}

.testimonial-btn {
  width: 50px;
  height: 50px;
  background: white;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-600);
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

/* Contact Section */
.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-16);
}

.contact-info h3 {
  margin-bottom: var(--spacing-8);
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-4);
  margin-bottom: var(--spacing-6);
}

.contact-item i {
  font-size: var(--font-size-xl);
  color: var(--primary-color);
  margin-top: var(--spacing-1);
}

.contact-item h4 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-1);
}

.contact-item p {
  color: var(--gray-600);
  margin: 0;
}

.social-links {
  display: flex;
  gap: var(--spacing-4);
  margin-top: var(--spacing-8);
}

.social-link {
  width: 50px;
  height: 50px;
  background: var(--gray-100);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-600);
  text-decoration: none;
  transition: all var(--transition-fast);
}

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

/* Forms */
.contact-form {
  background: white;
  padding: var(--spacing-8);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-lg);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-4);
}

.form-group {
  margin-bottom: var(--spacing-6);
}

.form-group label {
  display: block;
  font-weight: 500;
  color: var(--gray-700);
  margin-bottom: var(--spacing-2);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: var(--spacing-3) var(--spacing-4);
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-base);
  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;
}

/* Newsletter Section */
.newsletter {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
}

.newsletter-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-8);
}

.newsletter-text h2 {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-2);
}

.newsletter-text p {
  opacity: 0.9;
  margin: 0;
}

.newsletter-form {
  display: flex;
  gap: var(--spacing-3);
  min-width: 400px;
}

.newsletter-form input {
  flex: 1;
  padding: var(--spacing-4);
  border: none;
  border-radius: var(--radius-lg);
  font-size: var(--font-size-base);
}

.newsletter-form input:focus {
  outline: none;
}

.newsletter-form .btn {
  background: white;
  color: var(--primary-color);
  border: none;
}

.newsletter-form .btn:hover {
  background: var(--gray-100);
}

/* Footer */
.footer {
  background: var(--gray-900);
  color: var(--gray-300);
  padding: var(--spacing-16) 0 var(--spacing-8);
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-8);
  margin-bottom: var(--spacing-8);
}

.footer-brand {
  display: flex;
  align-items: center;
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: white;
  margin-bottom: var(--spacing-4);
}

.footer-brand i {
  margin-right: var(--spacing-2);
  color: var(--primary-color);
}

.footer-section h3 {
  color: white;
  margin-bottom: var(--spacing-4);
}

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

.footer-section ul li {
  margin-bottom: var(--spacing-2);
}

.footer-section ul li a {
  color: var(--gray-400);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-section ul li a:hover {
  color: var(--primary-color);
}

.footer-social {
  display: flex;
  gap: var(--spacing-3);
  margin-top: var(--spacing-4);
}

.footer-social .social-link {
  background: var(--gray-800);
  color: var(--gray-400);
}

.footer-social .social-link:hover {
  background: var(--primary-color);
  color: white;
}

.footer-bottom {
  border-top: 1px solid var(--gray-800);
  padding-top: var(--spacing-6);
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--gray-500);
}

.footer-bottom i {
  color: var(--error-color);
  margin: 0 var(--spacing-1);
}

/* Back to Top */
.back-to-top {
  position: fixed;
  bottom: var(--spacing-6);
  right: var(--spacing-6);
  width: 50px;
  height: 50px;
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
  z-index: var(--z-fixed);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
}

/* Success Message */
.success-message {
  position: fixed;
  top: var(--spacing-6);
  right: var(--spacing-6);
  background: var(--success-color);
  color: white;
  padding: var(--spacing-4) var(--spacing-6);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  transform: translateX(100%);
  transition: transform var(--transition-normal);
  z-index: var(--z-toast);
}

.success-message.show {
  transform: translateX(0);
}

.success-content {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
}

/* Utility Classes */
.hidden {
  display: none !important;
}

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

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

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

.mb-0 {
  margin-bottom: 0;
}
.mb-1 {
  margin-bottom: var(--spacing-1);
}
.mb-2 {
  margin-bottom: var(--spacing-2);
}
.mb-3 {
  margin-bottom: var(--spacing-3);
}
.mb-4 {
  margin-bottom: var(--spacing-4);
}
.mb-6 {
  margin-bottom: var(--spacing-6);
}
.mb-8 {
  margin-bottom: var(--spacing-8);
}

/* Responsive Design */
@media (max-width: 1024px) {
  .hero-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-12);
    text-align: center;
  }

  .about-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-12);
  }

  .contact-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-12);
  }

  .newsletter-content {
    flex-direction: column;
    text-align: center;
  }

  .newsletter-form {
    min-width: auto;
    width: 100%;
    max-width: 400px;
  }

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

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 100%;
    left: 0;
    width: 100%;
    background: white;
    border-top: 1px solid var(--gray-200);
    box-shadow: var(--shadow-lg);
    transform: translateY(-100%);
    transition: transform var(--transition-normal);
    z-index: var(--z-dropdown);
  }

  .nav-menu.active {
    transform: translateY(0);
  }

  .nav-list {
    flex-direction: column;
    padding: var(--spacing-4);
  }

  .nav-list li {
    margin: var(--spacing-2) 0;
  }

  .nav-toggle {
    display: flex;
  }

  .hero-title {
    font-size: var(--font-size-3xl);
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

  .hero-stats {
    justify-content: center;
  }

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

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

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

  .form-row {
    grid-template-columns: 1fr;
  }

  .newsletter-form {
    flex-direction: column;
  }

  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .footer-bottom {
    flex-direction: column;
    gap: var(--spacing-2);
    text-align: center;
  }

  .floating-card {
    display: none;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-3);
  }

  .hero-title {
    font-size: var(--font-size-2xl);
  }

  .section-title {
    font-size: var(--font-size-2xl);
  }

  .btn-large {
    padding: var(--spacing-3) var(--spacing-6);
    font-size: var(--font-size-sm);
  }

  .hero-actions {
    gap: var(--spacing-3);
  }

  .hero-stats {
    flex-direction: column;
    gap: var(--spacing-4);
  }
}