/* ===== CSS VARIABLES ===== */
:root {
  /* Color Palette */
  --primary-color: #007AFF;
  --secondary-color: #6366f1;
  --accent-color: #8b5cf6;
  --success-color: #34C759;
  --warning-color: #FF9500;
  
  --bg-dark: #0a0a1a;
  --bg-darker: #05050d;
  --bg-light: #1a1a2e;
  --bg-card: rgba(255, 255, 255, 0.05);
  
  --text-primary: #ffffff;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  
  --border-color: rgba(255, 255, 255, 0.1);
  
  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;
  
  /* Spacing */
  --section-padding: 6rem 0;
  --container-max-width: 1200px;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Shadows */
  --shadow-small: 0 2px 10px rgba(0, 0, 0, 0.3);
  --shadow-medium: 0 8px 30px rgba(0, 0, 0, 0.4);
  --shadow-large: 0 20px 60px rgba(0, 0, 0, 0.5);
}

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

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

body {
  font-family: var(--font-primary);
  background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-light) 100%);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ===== UTILITIES ===== */
.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

.section {
  padding: var(--section-padding);
  position: relative;
}

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

/* ===== NAVIGATION ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: transparent;
  transition: all var(--transition-normal);
  padding: 1rem 0;
}

.navbar.scrolled {
  background: rgba(10, 10, 26, 0.9);
  backdrop-filter: blur(20px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  padding: 0.5rem 0;
}

.nav-container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo a {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  transition: transform var(--transition-fast);
}

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

.logo-image {
  height: 40px;
  width: auto;
  border-radius: 8px;
}

.logo-text {
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary-color), var(--success-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 2.5rem;
  align-items: center;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-fast);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -5px;
  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%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

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

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

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

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

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

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 12px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  box-shadow: 0 4px 15px rgba(0, 122, 255, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 122, 255, 0.6);
}

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

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

.btn-large {
  padding: 1rem 2rem;
  font-size: 1.1rem;
}

.btn-nav {
  padding: 0.5rem 1.25rem;
}

.btn-icon {
  font-size: 1.2rem;
}

/* ===== HERO SECTION ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding-top: 5rem;
  overflow: hidden;
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(ellipse at top, rgba(99, 102, 241, 0.15) 0%, transparent 60%),
              radial-gradient(ellipse at bottom, rgba(139, 92, 246, 0.15) 0%, transparent 60%);
  z-index: 0;
}

.particles-container {
  position: absolute;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.particle {
  position: absolute;
  width: 4px;
  height: 4px;
  background: rgba(99, 102, 241, 0.6);
  border-radius: 50%;
  box-shadow: 0 0 10px rgba(99, 102, 241, 0.8);
  animation: float 6s infinite ease-in-out;
}

.particle:nth-child(1) { left: 10%; top: 20%; animation-delay: 0s; }
.particle:nth-child(2) { left: 20%; top: 40%; animation-delay: 1s; }
.particle:nth-child(3) { left: 30%; top: 60%; animation-delay: 2s; }
.particle:nth-child(4) { left: 40%; top: 80%; animation-delay: 3s; }
.particle:nth-child(5) { left: 50%; top: 30%; animation-delay: 4s; }
.particle:nth-child(6) { left: 60%; top: 50%; animation-delay: 0.5s; }
.particle:nth-child(7) { left: 70%; top: 70%; animation-delay: 1.5s; }
.particle:nth-child(8) { left: 80%; top: 40%; animation-delay: 2.5s; }
.particle:nth-child(9) { left: 90%; top: 60%; animation-delay: 3.5s; }
.particle:nth-child(10) { left: 15%; top: 90%; animation-delay: 4.5s; }

@keyframes float {
  0%, 100% {
    transform: translateY(0) translateX(0);
    opacity: 0.4;
  }
  50% {
    transform: translateY(-30px) translateX(20px);
    opacity: 1;
  }
}

.hero-container {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-content {
  animation: fadeInUp 1s ease-out;
}

.hero-tagline {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1.5rem;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: 50px;
  margin-bottom: 2rem;
  backdrop-filter: blur(10px);
  animation: pulse 3s ease-in-out infinite;
}

.tagline-text {
  font-size: 1rem;
  font-weight: 600;
  background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 0.5px;
}

.tagline-icon {
  font-size: 1.2rem;
  animation: sparkle 2s ease-in-out infinite;
}

@keyframes sparkle {
  0%, 100% {
    opacity: 1; 
    transform: scale(1);
  }
  50% {
    opacity: 0.6;
    transform: scale(1.2);
  }
}

@keyframes pulse {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(99, 102, 241, 0.4);
  }
  50% {
    box-shadow: 0 0 0 15px rgba(99, 102, 241, 0);
  }
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
  line-height: 1.8;
}

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

.hero-stats {
  display: flex;
  gap: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
}

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 0.5rem;
}

.stat-label {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.hero-visual {
  position: relative;
  animation: fadeInRight 1s ease-out 0.3s both;
}

.code-window {
  background: rgba(10, 10, 26, 0.8);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-large);
}

.window-header {
  display: flex;
  gap: 6px;
  padding: 1rem;
  background: rgba(0, 0, 0, 0.3);
  border-bottom: 1px solid var(--border-color);
}

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

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

.window-body {
  padding: 1.5rem;
}

.window-body pre {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--text-secondary);
}

.code-keyword { color: #ff79c6; }
.code-class { color: #8be9fd; }
.code-function { color: #50fa7b; }

/* Typewriter cursor */
.typewriter-cursor {
  display: inline-block;
  width: 2px;
  height: 1em;
  background: #8be9fd;
  margin-left: 2px;
  animation: blink 1s step-end infinite;
  vertical-align: text-bottom;
}

@keyframes blink {
  0%, 50% {
    opacity: 1;
  }
  51%, 100% {
    opacity: 0;
  }
}

.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-muted);
  font-size: 0.9rem;
  animation: bounce 2s infinite;
}

.scroll-arrow {
  font-size: 1.5rem;
}

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

/* ===== SECTION HEADER ===== */
.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-tag {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--primary-color);
  margin-bottom: 1rem;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  margin-bottom: 1rem;
  line-height: 1.2;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ===== PROJECTS SECTION ===== */
.projects {
  background: linear-gradient(180deg, transparent 0%, rgba(26, 26, 46, 0.5) 100%);
}

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

.project-card {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  overflow: hidden;
  transition: all var(--transition-normal);
  cursor: pointer;
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.project-card:hover {
  transform: translateY(-10px);
  border-color: var(--primary-color);
  box-shadow: 0 20px 40px rgba(0, 122, 255, 0.3);
}

.project-image {
  position: relative;
  height: 300px;
  background: linear-gradient(135deg, var(--secondary-color), var(--accent-color));
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background-size: cover;
  background-position: center;
}

.project-image::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.3));
  z-index: 1;
}

.project-card:nth-child(1) .project-image {
  background-image: url('../AppLogo/collabrix_inapp.png');
  background-color: #007AFF;
}

.project-card:nth-child(2) .project-image {
  background-image: url('../AppLogo/giderim_inapp.png');
  background-color: #34C759;
}

.project-card:nth-child(3) .project-image {
  background-image: url('../AppLogo/quittoday_inapp.png');
  background-color: #FF3B30;
}

.project-card:nth-child(4) .project-image {
  background-image: url('../AppLogo/walkry_inapp.png');
  background-color: #FF9500;
}

.project-card:nth-child(5) .project-image {
  background-image: url('../AppLogo/brainblocks_inapp.png');
  background-color: #8b5cf6;
}

.project-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  padding: 2rem;
  text-align: center;
  gap: 1rem;
  background: transparent;
  width: 100%;
  position: relative;
  z-index: 2;
}

.project-icon {
  font-size: 5rem;
  filter: drop-shadow(0 8px 30px rgba(0, 0, 0, 0.4));
  animation: float 3s ease-in-out infinite;
  color: rgba(255, 255, 255, 0.95);
}

.project-logo {
  width: 140px;
  height: 140px;
  object-fit: contain;
  filter: drop-shadow(0 10px 35px rgba(0, 0, 0, 0.8));
  animation: float 3s ease-in-out infinite;
  border-radius: 25%;
  transition: all var(--transition-normal);
  position: relative;
  z-index: 3;
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  padding: 10px;
}

.project-card:hover .project-logo {
  transform: scale(1.15);
  filter: drop-shadow(0 15px 50px rgba(0, 0, 0, 0.9));
  background: rgba(255, 255, 255, 0.1);
}

.project-placeholder::after {
  content: attr(data-app-name);
  position: absolute;
  bottom: 1rem;
  left: 50%;
  transform: translateX(-50%);
  font-size: 1.5rem;
  font-weight: 800;
  color: rgba(255, 255, 255, 0.95);
  pointer-events: none;
  white-space: nowrap;
  letter-spacing: 1px;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.8);
  z-index: 3;
}

.project-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: all var(--transition-normal);
  z-index: 10;
}

.project-card:hover .project-overlay {
  opacity: 1;
}

.project-card:hover .project-image::before {
  background: linear-gradient(135deg, rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.5));
}

.project-content {
  padding: 1.5rem;
}

.project-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.project-title {
  font-size: 1.5rem;
  font-weight: 700;
}

.project-category {
  font-size: 0.85rem;
  padding: 0.25rem 0.75rem;
  background: rgba(99, 102, 241, 0.2);
  border: 1px solid var(--secondary-color);
  border-radius: 12px;
  color: var(--secondary-color);
}

.project-description {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.6;
  font-size: 0.95rem;
}

.project-features {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.feature-item {
  font-size: 0.85rem;
  padding: 0.35rem 0.75rem;
  background: rgba(52, 199, 89, 0.1);
  border: 1px solid rgba(52, 199, 89, 0.3);
  border-radius: 8px;
  color: var(--success-color);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.feature-item i {
  font-size: 0.9rem;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tech-badge {
  font-size: 0.8rem;
  padding: 0.35rem 0.75rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-muted);
  transition: all var(--transition-fast);
}

.tech-badge:hover {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

/* ===== SERVICES SECTION ===== */
.services {
  background: linear-gradient(180deg, rgba(26, 26, 46, 0.5) 0%, transparent 100%);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  max-width: 1400px;
  margin: 0 auto;
}

.service-card {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 2rem;
  transition: all var(--transition-normal);
}

.service-card:hover {
  transform: translateY(-10px);
  border-color: var(--primary-color);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.service-icon {
  font-size: 3rem;
  margin-bottom: 1.5rem;
  display: block;
  color: var(--primary-color);
}

.service-icon i {
  display: block;
}

.service-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.service-description {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.service-features {
  list-style: none;
}

.service-features li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.75rem;
  color: var(--text-secondary);
}

.service-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--success-color);
  font-weight: bold;
}

/* ===== ABOUT SECTION ===== */
.about {
  background: linear-gradient(135deg, rgba(26, 26, 46, 0.3) 0%, transparent 100%);
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about-description {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.8;
  font-size: 1.1rem;
}

.about-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
}

.metric-item {
  display: flex;
  flex-direction: column;
}

.metric-number {
  font-size: 2.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 0.5rem;
}

.metric-label {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.tech-stack {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 2rem;
}

.tech-stack-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 2rem;
  text-align: center;
}

.tech-icons {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.tech-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: 12px;
  font-weight: 600;
  color: var(--primary-color);
  transition: all var(--transition-normal);
  cursor: pointer;
}

.tech-icon:hover {
  background: var(--primary-color);
  color: white;
  transform: scale(1.05);
  box-shadow: 0 8px 20px rgba(99, 102, 241, 0.4);
}

/* ===== CONTACT SECTION ===== */
.contact {
  background: linear-gradient(180deg, transparent 0%, rgba(26, 26, 46, 0.5) 100%);
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 4rem;
  margin-top: 3rem;
}

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

.contact-method {
  display: flex;
  gap: 1rem;
  padding: 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  transition: all var(--transition-normal);
}

.contact-method:hover {
  border-color: var(--primary-color);
  transform: translateX(5px);
}

.method-icon {
  font-size: 1.5rem;
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(99, 102, 241, 0.1);
  border-radius: 12px;
  flex-shrink: 0;
  color: var(--primary-color);
}

.method-content h4 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

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

.method-content a:hover {
  color: var(--accent-color);
}

.method-content p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.social-section {
  padding: 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
}

.social-section h4 {
  font-size: 1.1rem;
  margin-bottom: 1rem;
}

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

.social-link {
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: 12px;
  font-size: 1.3rem;
  text-decoration: none;
  transition: all var(--transition-normal);
  color: var(--text-primary);
}

.social-link:hover {
  background: var(--primary-color);
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(99, 102, 241, 0.4);
}

.contact-form {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 2.5rem;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.875rem 1rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  color: var(--text-primary);
  font-family: var(--font-primary);
  font-size: 1rem;
  transition: all var(--transition-normal);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.1);
}

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

.btn-submit {
  width: 100%;
  margin-top: 1rem;
}

/* ===== FOOTER ===== */
.footer {
  background: rgba(5, 5, 13, 0.8);
  border-top: 1px solid var(--border-color);
  padding: 3rem 0 1.5rem;
}

.footer-content {
  display: grid;
  grid-template-columns: 1.5fr 2fr;
  gap: 4rem;
  margin-bottom: 2rem;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.footer-logo-image {
  height: 40px;
  width: auto;
  border-radius: 8px;
}

.footer-logo-text {
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary-color), var(--success-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-description {
  color: var(--text-secondary);
  line-height: 1.6;
}

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

.footer-column h4 {
  font-size: 1.1rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

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

.footer-column li {
  margin-bottom: 0.75rem;
}

.footer-column a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-bottom-links {
  display: flex;
  gap: 2rem;
}

.footer-bottom-links a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

/* ===== BACK TO TOP BUTTON ===== */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  border: none;
  border-radius: 50%;
  font-size: 1.5rem;
  cursor: pointer;
  box-shadow: var(--shadow-medium);
  transition: all var(--transition-normal);
  z-index: 999;
}

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

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

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

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

/* Tablet */
@media (max-width: 1024px) {
  .hero-container,
  .about-content {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .hero-visual {
    order: -1;
  }

  .projects-grid {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  }
  
  .contact-content {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

/* Mobile */
@media (max-width: 768px) {
  :root {
    --section-padding: 4rem 0;
  }

  .container {
    padding: 0 1.5rem;
  }
  
  .nav-container {
    padding: 0 1.5rem;
  }
  
  .hamburger {
    display: flex;
  }
  
  .btn-nav {
    display: none;
  }

  .nav-menu {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background: rgba(10, 10, 26, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    justify-content: flex-start;
    padding: 3rem 2rem;
    gap: 2rem;
    transition: left var(--transition-normal);
  }

  .nav-menu.active {
    left: 0;
  }

  .hero-tagline {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
  }
  
  .tagline-text {
    font-size: 0.85rem;
  }
  
  .tagline-icon {
    font-size: 1rem;
  }

  .hero-title {
    font-size: 2.5rem;
  }

  .hero-subtitle {
    font-size: 1.1rem;
  }

  .hero-buttons {
    flex-direction: column;
  }
  
  .hero-stats {
    flex-direction: column;
    gap: 1.5rem;
  }

  .code-window {
    display: none;
  }
  
  .project-image {
    height: 250px;
  }
  
  .project-logo {
    width: 120px;
    height: 120px;
  }
  
  .project-placeholder::after {
    font-size: 1.2rem;
    bottom: 0.75rem;
  }
  
  .projects-grid {
    grid-template-columns: 1fr;
  }

  .services-grid {
    grid-template-columns: 1fr;
  }
  
  .about-metrics {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .tech-icons {
    grid-template-columns: 1fr;
  }

  .footer-links {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }

  .back-to-top {
    bottom: 1rem;
    right: 1rem;
    width: 45px;
    height: 45px;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2rem;
  }
  
  .section-title {
    font-size: 1.75rem;
  }
  
  .btn-large {
    padding: 0.875rem 1.5rem;
    font-size: 1rem;
  }
  
  .project-image {
    height: 220px;
  }
  
  .project-logo {
    width: 100px;
    height: 100px;
  }
  
  .project-placeholder::after {
    font-size: 1rem;
    bottom: 0.5rem;
  }
}