/* css/main.css */

/* ========== Variables CSS ========== */
:root {
  /* Colors */
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --primary-light: #818cf8;
  --secondary: #0f172a;
  --accent: #f59e0b;
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
  
  /* Neutrals */
  --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-primary: 'Inter', system-ui, -apple-system, sans-serif;
  --font-display: 'Space Grotesk', sans-serif;
  
  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);
  --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
  
  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
  
  /* 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 ========== */
*, *::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);
  color: var(--gray-900);
  background: white;
  line-height: 1.6;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }

p {
  margin-bottom: 1rem;
  color: var(--gray-600);
}

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

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

img {
  max-width: 100%;
  height: auto;
  display: block;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}

ul {
  list-style: none;
}

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

.text-gradient {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-badge {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: var(--primary);
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  color: white;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

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

.section-title {
  margin-bottom: 1.5rem;
}

.section-description {
  max-width: 600px;
  margin: 0 auto;
  font-size: 1.125rem;
  color: var(--gray-600);
}

/* ========== Preloader ========== */
#preloader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: white;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.5s, visibility 0.5s;
}

#preloader.hide {
  opacity: 0;
  visibility: hidden;
}

.loader {
  text-align: center;
}

.loader-inner {
  width: 60px;
  height: 60px;
  border: 3px solid var(--gray-200);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto 1rem;
}

.loader-text {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--gray-900);
  letter-spacing: 0.1em;
}

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

/* ========== Custom Cursor ========== */
.custom-cursor,
.cursor-follower {
  position: fixed;
  pointer-events: none;
  z-index: 9998;
  transition: transform 0.15s ease-out;
  display: none;
}

@media (hover: hover) {
  .custom-cursor {
    display: block;
    width: 10px;
    height: 10px;
    background: var(--primary);
    border-radius: 50%;
    transform: translate(-50%, -50%);
  }
  
  .cursor-follower {
    display: block;
    width: 30px;
    height: 30px;
    border: 2px solid var(--primary);
    border-radius: 50%;
    opacity: 0.3;
    transform: translate(-50%, -50%);
    transition: transform 0.3s ease-out;
  }
}

/* ========== Navigation ========== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  z-index: var(--z-sticky);
  transition: all var(--transition-base);
  padding: 1.5rem 0;
}

.navbar.scrolled {
  padding: 1rem 0;
  box-shadow: var(--shadow-md);
}

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

.logo {
  display: flex;
  align-items: center;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--gray-900);
}

.logo svg {
  height: 40px;
  width: auto;
}

.pulse-dot {
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  position: relative;
  font-weight: 500;
  color: var(--gray-700);
  transition: color var(--transition-fast);
  padding: 0.5rem 0;
}

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

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

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

.nav-cta {
  padding: 0.75rem 1.5rem;
  background: var(--primary);
  color: white !important;
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}

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

.nav-cta::after {
  display: none;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
}

.hamburger span {
  width: 25px;
  height: 2px;
  background: var(--gray-900);
  transition: all var(--transition-base);
}

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

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

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ========== Hero Section ========== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 0 80px;
  overflow: hidden;
}

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

.gradient-mesh {
  position: absolute;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 25%, #f093fb 50%, #fda085 75%, #ffd89b 100%);
  opacity: 0.05;
  filter: blur(100px);
}

#particles-canvas {
  position: absolute;
  width: 100%;
  height: 100%;
  opacity: 0.3;
}

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

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 1.5rem;
}

.badge-icon {
  font-size: 1.25rem;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

.hero-description {
  font-size: 1.25rem;
  color: var(--gray-600);
  margin-bottom: 2rem;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  cursor: pointer;
  text-align: center;
  justify-content: center;
}

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

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

.btn-secondary {
  background: var(--gray-100);
  color: var(--gray-900);
  border: 1px solid var(--gray-200);
}

.btn-secondary:hover {
  background: var(--gray-200);
  transform: translateY(-2px);
  color: var(--gray-900);
}

.btn-large {
  padding: 1rem 2rem;
  font-size: 1.125rem;
}

.hero-stats {
  display: flex;
  gap: 3rem;
}

.stat {
  text-align: center;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary);
  font-family: var(--font-display);
}

.stat-label {
  font-size: 0.875rem;
  color: var(--gray-600);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.hero-visual {
  position: relative;
}

.code-window {
  background: var(--gray-900);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-2xl);
  transform: perspective(1000px) rotateY(-10deg);
  transition: transform var(--transition-base);
}

.code-window:hover {
  transform: perspective(1000px) rotateY(0deg);
}

.window-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background: var(--gray-800);
  border-bottom: 1px solid var(--gray-700);
}

.window-controls {
  display: flex;
  gap: 0.5rem;
}

.control {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.control.red { background: #ff5f56; }
.control.yellow { background: #ffbd2e; }
.control.green { background: #27c93f; }

.window-title {
  color: var(--gray-400);
  font-size: 0.875rem;
  font-family: 'Monaco', 'Courier New', monospace;
}

.code-content {
  padding: 1.5rem;
  overflow-x: auto;
  max-height: 400px;
}

.code-content pre {
  margin: 0;
  font-family: 'Monaco', 'Courier New', monospace;
  font-size: 0.875rem;
  line-height: 1.6;
}

.code-content .keyword { color: #c678dd; }
.code-content .variable { color: #e06c75; }
.code-content .property { color: #56b6c2; }
.code-content .string { color: #98c379; }
.code-content .method { color: #61afef; }

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

.scroll-indicator span {
  font-size: 0.875rem;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.scroll-arrow {
  width: 20px;
  height: 30px;
  margin: 0.5rem auto;
  border: 2px solid var(--gray-400);
  border-radius: 20px;
  position: relative;
}

.scroll-arrow::after {
  content: '';
  position: absolute;
  top: 5px;
  left: 50%;
  transform: translateX(-50%);
  width: 3px;
  height: 8px;
  background: var(--gray-400);
  border-radius: 2px;
  animation: scroll-down 1.5s infinite;
}

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

@keyframes scroll-down {
  0% { opacity: 0; top: 5px; }
  50% { opacity: 1; }
  100% { opacity: 0; top: 15px; }
}

/* ========== Services Section ========== */
.services {
  padding: var(--space-3xl) 0;
  background: var(--gray-50);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.service-card {
  background: white;
  padding: 2rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-200);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--primary) 0%, var(--primary-light) 100%);
  transform: translateX(-100%);
  transition: transform var(--transition-base);
}

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

.service-card:hover::before {
  transform: translateX(0);
}

.service-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: white;
  margin-bottom: 1.5rem;
}

.service-card h3 {
  margin-bottom: 1rem;
  color: var(--gray-900);
}

.service-card p {
  margin-bottom: 1.5rem;
  line-height: 1.7;
}

.service-features {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.service-features li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--gray-600);
}

.service-features i {
  color: var(--success);
  font-size: 0.75rem;
}

/* ========== Portfolio Section ========== */
.portfolio {
  padding: var(--space-3xl) 0;
}

.portfolio-filters {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 0.75rem 1.5rem;
  background: var(--gray-100);
  color: var(--gray-700);
  border-radius: var(--radius-full);
  font-weight: 500;
  transition: all var(--transition-base);
}

.filter-btn:hover {
  background: var(--gray-200);
}

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

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.portfolio-item {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--gray-100);
  height: 400px;
  cursor: pointer;
  transition: all var(--transition-base);
}

.portfolio-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-2xl);
}

.portfolio-image {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  position: relative;
}

.portfolio-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, rgba(0,0,0,0) 0%, rgba(0,0,0,0.8) 100%);
  display: flex;
  align-items: flex-end;
  padding: 2rem;
  opacity: 0;
  transition: opacity var(--transition-base);
}

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

.overlay-content {
  color: white;
  transform: translateY(20px);
  transition: transform var(--transition-base);
}

.portfolio-item:hover .overlay-content {
  transform: translateY(0);
}

.overlay-content h3 {
  color: white;
  margin-bottom: 0.5rem;
}

.overlay-content p {
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 1rem;
}

.portfolio-tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.portfolio-tags span {
  padding: 0.25rem 0.75rem;
  background: rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.portfolio-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: white;
  color: var(--primary);
  border-radius: 50%;
  transition: all var(--transition-base);
}

.portfolio-link:hover {
  transform: scale(1.1);
  background: var(--primary);
  color: white;
}

/* ========== Process Section ========== */
.process {
  padding: var(--space-3xl) 0;
  background: var(--gray-50);
}

.process-timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.process-timeline::before {
  content: '';
  position: absolute;
  left: 50px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--gray-300);
}

.timeline-item {
  position: relative;
  padding-left: 100px;
  margin-bottom: 3rem;
}

.timeline-number {
  position: absolute;
  left: 0;
  top: 0;
  width: 60px;
  height: 60px;
  background: var(--primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 700;
  box-shadow: var(--shadow-lg);
}

.timeline-content h3 {
  margin-bottom: 0.5rem;
  color: var(--gray-900);
}

/* ========== Tech Stack Section ========== */
.tech-stack {
  padding: var(--space-2xl) 0;
  background: var(--gray-900);
  overflow: hidden;
}

.tech-stack .section-header {
  margin-bottom: var(--space-2xl);
}

.tech-stack .section-badge {
  background: white;
  color: var(--gray-900);
}

.tech-stack .section-title {
  color: white;
}

.tech-logos {
  position: relative;
  width: 100%;
  mask-image: linear-gradient(90deg, transparent, black 20%, black 80%, transparent);
}

.tech-track {
  display: flex;
  gap: 3rem;
  animation: scroll-tech 20s linear infinite;
}

.tech-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.tech-item i {
  font-size: 3rem;
  color: var(--gray-400);
  transition: color var(--transition-base);
}

.tech-item span {
  color: var(--gray-500);
  font-size: 0.875rem;
  font-weight: 500;
}

.tech-item:hover i {
  color: var(--primary);
}

@keyframes scroll-tech {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ========== About Section ========== */
.about {
  padding: var(--space-3xl) 0;
}

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

.about-text .section-badge {
  margin-bottom: 1rem;
}

.about-text h2 {
  margin-bottom: 1.5rem;
}

.lead {
  font-size: 1.25rem;
  color: var(--gray-700);
  margin-bottom: 1.5rem;
}

.about-features {
  display: flex;
  gap: 2rem;
  margin-top: 2rem;
}

.feature {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--gray-700);
}

.feature i {
  color: var(--primary);
  font-size: 1.25rem;
}

.about-visual {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.visual-card {
  background: linear-gradient(135deg, var(--gray-50) 0%, white 100%);
  padding: 2rem;
  border-radius: var(--radius-lg);
  text-align: center;
  border: 1px solid var(--gray-200);
  transition: all var(--transition-base);
}

.visual-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary);
}

.card-number {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary);
  font-family: var(--font-display);
  margin-bottom: 0.5rem;
}

.card-label {
  color: var(--gray-600);
  font-size: 0.875rem;
}

/* ========== CTA Section ========== */
.cta-section {
  padding: var(--space-3xl) 0;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
}

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

.cta-content h2 {
  color: white;
  margin-bottom: 1rem;
}

.cta-content p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.25rem;
  margin-bottom: 2rem;
}

.cta-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

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

.cta-section .btn-primary:hover {
  background: var(--gray-100);
}

.cta-section .btn-secondary {
  background: transparent;
  color: white;
  border-color: white;
}

.cta-section .btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  color: white;
}

/* ========== Contact Section ========== */
.contact {
  padding: var(--space-3xl) 0;
  background: var(--gray-50);
}

.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  max-width: 1000px;
  margin: 0 auto;
}

.contact-info h3 {
  margin-bottom: 1rem;
}

.contact-info p {
  margin-bottom: 2rem;
}

.contact-items {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.contact-item {
  display: flex;
  gap: 1rem;
  align-items: start;
}

.contact-item i {
  width: 40px;
  height: 40px;
  background: var(--primary);
  color: white;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-item h4 {
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--gray-500);
  margin-bottom: 0.25rem;
}

.contact-item a {
  color: var(--gray-900);
  font-weight: 500;
}

.social-links {
  display: flex;
  gap: 1rem;
}

.social-links a {
  width: 40px;
  height: 40px;
  background: var(--gray-200);
  color: var(--gray-700);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
}

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

.contact-form {
  background: white;
  padding: 2rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.form-group {
  position: relative;
}

.form-group.full-width {
  grid-column: span 2;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 1rem;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 1rem;
  transition: all var(--transition-base);
  background: white;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-group label {
  position: absolute;
  left: 1rem;
  top: 1rem;
  color: var(--gray-500);
  transition: all var(--transition-base);
  pointer-events: none;
  background: white;
  padding: 0 0.25rem;
}

.form-group input:focus + label,
.form-group input:not(:placeholder-shown) + label,
.form-group textarea:focus + label,
.form-group textarea:not(:placeholder-shown) + label {
  top: -0.5rem;
  font-size: 0.875rem;
  color: var(--primary);
}

.form-group select {
  color: var(--gray-700);
}

.contact-form .btn {
  grid-column: span 2;
  justify-self: center;
}

/* ========== Footer ========== */
.footer {
  background: var(--gray-900);
  color: var(--gray-400);
  padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 3fr;
  gap: var(--space-3xl);
  margin-bottom: var(--space-2xl);
}

.footer-brand {
  max-width: 300px;
}

.footer-logo {
  margin-bottom: 1rem;
}

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

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.footer-column h4 {
  color: white;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
}

.footer-column ul {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-column a {
  color: var(--gray-400);
  transition: color var(--transition-fast);
}

.footer-column a:hover {
  color: white;
}

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

.footer-social {
  display: flex;
  gap: 1rem;
}

.footer-social a {
  color: var(--gray-400);
  font-size: 1.25rem;
  transition: color var(--transition-fast);
}

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

/* ========== Back to Top ========== */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 50px;
  height: 50px;
  background: var(--primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  z-index: var(--z-fixed);
  box-shadow: var(--shadow-lg);
}

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

.back-to-top:hover {
  background: var(--primary-dark);
  transform: translateY(-3px);
  box-shadow: var(--shadow-xl);
}

/* ========== Reveal Animations ========== */
.reveal-fade {
  opacity: 0;
  transition: opacity 0.8s ease;
}

.reveal-fade.active {
  opacity: 1;
}

.reveal-slide {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s ease;
}

.reveal-slide.active {
  opacity: 1;
  transform: translateY(0);
}

.reveal-scale {
  opacity: 0;
  transform: scale(0.9);
  transition: all 0.8s ease;
}

.reveal-scale.active {
  opacity: 1;
  transform: scale(1);
}