/* Design System & CSS Variables */
:root {
  --bg-primary: #0a0c16;
  --bg-secondary: #121526;
  --bg-card: rgba(22, 27, 46, 0.7);
  --bg-glass: rgba(255, 255, 255, 0.04);
  --border-glass: rgba(255, 255, 255, 0.08);
  
  --accent-purple: #7952b3;
  --accent-cyan: #00f2fe;
  --accent-pink: #ff0844;
  --accent-gradient: linear-gradient(135deg, #00f2fe 0%, #4facfe 50%, #7952b3 100%);
  --accent-gradient-text: linear-gradient(135deg, #00f2fe, #9b51e0, #ff0844);
  
  --text-main: #f0f4f8;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  
  --font-family: 'Plus Jakarta Sans', sans-serif;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: var(--font-family);
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-main);
  overflow-x: hidden;
  line-height: 1.6;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: #1e293b;
  border-radius: 5px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--accent-purple);
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Glassmorphism utility */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass);
  border-radius: 20px;
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
  border: none;
}

.btn-primary {
  background: var(--accent-gradient);
  color: #fff;
  box-shadow: 0 10px 25px rgba(0, 242, 254, 0.3);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 35px rgba(0, 242, 254, 0.5);
}

.btn-outline {
  background: transparent;
  color: var(--text-main);
  border: 1px solid var(--border-glass);
}

.btn-outline:hover {
  background: var(--bg-glass);
  border-color: var(--accent-cyan);
  transform: translateY(-3px);
}

/* Navbar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 20px 0;
  transition: var(--transition);
}

.navbar.scrolled {
  background: rgba(10, 12, 22, 0.85);
  backdrop-filter: blur(12px);
  padding: 12px 0;
  border-bottom: 1px solid var(--border-glass);
}

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

.logo {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--text-main);
  text-decoration: none;
  letter-spacing: -0.5px;
}

.logo span {
  color: var(--accent-cyan);
}

.nav-links {
  display: flex;
  gap: 30px;
  list-style: none;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
  font-size: 0.95rem;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--accent-cyan);
}

/* Mobile Nav Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  cursor: pointer;
}

.menu-toggle span {
  width: 25px;
  height: 2px;
  background-color: var(--text-main);
  transition: var(--transition);
}

/* Hero Section */
.hero {
  min-height: 100vh;
  padding-top: 140px;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero-bg-glow {
  position: absolute;
  top: -20%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0,242,254,0.15) 0%, rgba(121,82,179,0.05) 50%, transparent 70%);
  filter: blur(60px);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 30px;
  background: rgba(0, 242, 254, 0.1);
  border: 1px solid rgba(0, 242, 254, 0.2);
  color: var(--accent-cyan);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 20px;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 20px;
}

.hero-description {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin-bottom: 35px;
  max-width: 500px;
}

.hero-cta {
  display: flex;
  gap: 15px;
}

.hero-image-wrapper {
  position: relative;
  border-radius: 24px;
  overflow: hidden;
  border: 1px solid var(--border-glass);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
}

.hero-image {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.5s ease;
}

.hero-image-wrapper:hover .hero-image {
  transform: scale(1.03);
}

.hero-stats {
  position: absolute;
  bottom: 20px;
  left: 20px;
  right: 20px;
  padding: 15px 25px;
  display: flex;
  justify-content: space-around;
}

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

.stat-number {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-main);
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Sections Common */
.section {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 60px;
}

.section-subtitle {
  color: var(--accent-cyan);
  font-weight: 600;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 10px;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
}

/* Services Grid */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
}

.service-card {
  padding: 35px 30px;
  transition: var(--transition);
  position: relative;
  top: 0;
}

.service-card:hover {
  top: -10px;
  border-color: rgba(0, 242, 254, 0.3);
}

.service-icon {
  width: 60px;
  height: 60px;
  border-radius: 16px;
  background: var(--bg-glass);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  color: var(--accent-cyan);
  margin-bottom: 25px;
  border: 1px solid var(--border-glass);
}

.service-card h3 {
  font-size: 1.3rem;
  margin-bottom: 15px;
}

.service-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* Portfolio Filter & Grid */
.portfolio-filter {
  display: flex;
  justify-content: center;
  gap: 15px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 8px 20px;
  border-radius: 20px;
  background: transparent;
  border: 1px solid var(--border-glass);
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition);
  font-weight: 500;
}

.filter-btn.active,
.filter-btn:hover {
  background: var(--accent-gradient);
  color: #fff;
  border-color: transparent;
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 30px;
}

.project-card {
  overflow: hidden;
  transition: var(--transition);
}

.project-card:hover {
  transform: translateY(-8px);
}

.project-img-wrapper {
  position: relative;
  overflow: hidden;
  height: 220px;
}

.project-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.project-card:hover .project-img {
  transform: scale(1.1);
}

.project-overlay {
  position: absolute;
  inset: 0;
  background: rgba(10, 12, 22, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition);
}

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

.project-info {
  padding: 25px;
}

.project-category {
  font-size: 0.8rem;
  color: var(--accent-cyan);
  font-weight: 600;
  text-transform: uppercase;
}

.project-title {
  font-size: 1.25rem;
  margin: 8px 0;
}

/* Skills Section */
.skills-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.skill-bar {
  margin-bottom: 25px;
}

.skill-info {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
  font-weight: 600;
}

.skill-progress-bg {
  height: 10px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--border-glass);
}

.skill-progress-fill {
  height: 100%;
  background: var(--accent-gradient);
  border-radius: 10px;
  width: 0%;
  transition: width 1.5s cubic-bezier(0.1, 0.5, 0.5, 1);
}

/* Contact Form */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 40px;
}

.contact-info-card {
  padding: 40px;
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 20px;
}

.contact-icon {
  width: 50px;
  height: 50px;
  border-radius: 12px;
  background: rgba(0, 242, 254, 0.1);
  color: var(--accent-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.form-input {
  width: 100%;
  padding: 14px 18px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-glass);
  border-radius: 12px;
  color: var(--text-main);
  font-size: 1rem;
  transition: var(--transition);
}

.form-input:focus {
  outline: none;
  border-color: var(--accent-cyan);
  background: rgba(255, 255, 255, 0.06);
}

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

/* Footer */
footer {
  padding: 40px 0;
  border-top: 1px solid var(--border-glass);
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Modal Popup */
.modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(10px);
  z-index: 2000;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal.active {
  display: flex;
}

.modal-content {
  max-width: 500px;
  width: 100%;
  padding: 40px;
  text-align: center;
  position: relative;
}

.close-modal {
  position: absolute;
  top: 15px;
  right: 20px;
  font-size: 1.5rem;
  color: var(--text-muted);
  cursor: pointer;
}

/* Responsive Media Queries */
@media (max-width: 992px) {
  .hero-grid,
  .skills-container,
  .contact-grid {
    grid-template-columns: 1fr;
  }
  
  .hero-title {
    font-size: 2.8rem;
  }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 70px;
    right: -100%;
    width: 250px;
    background: var(--bg-secondary);
    flex-direction: column;
    padding: 30px;
    border-radius: 16px 0 0 16px;
    border: 1px solid var(--border-glass);
    transition: var(--transition);
  }

  .nav-links.active {
    right: 0;
  }

  .menu-toggle {
    display: flex;
  }

  .hero-title {
    font-size: 2.2rem;
  }
}