:root {
  --primary: #2563eb;
  --secondary: #1e40af;
  --accent: #3b82f6;
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --text-primary: #1e293b;
  --text-secondary: #475569;
  --border: #e2e8f0;
  --shadow: rgba(37, 99, 235, 0.1);
}

[data-theme="dark"] {
  --primary: #3b82f6;
  --secondary: #2563eb;
  --accent: #60a5fa;
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --border: #334155;
  --shadow: rgba(59, 130, 246, 0.2);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Courier New", monospace;
  background: var(--bg-primary);
  color: var(--text-primary);
  overflow-x: hidden;
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* Pixel Grid Background */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 20px 20px;
  pointer-events: none;
  z-index: 0;
  opacity: 0.5;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  position: relative;
  z-index: 1;
}

/* Header/Navigation */
header {
  padding: 20px 0;
  border-bottom: 2px solid var(--primary);
  background: var(--bg-primary);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 4px 15px var(--shadow);
  transition: all 0.3s ease;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.logo {
  font-size: 24px;
  font-weight: bold;
  color: var(--primary);
}

.nav-center {
  display: flex;
  align-items: center;
  gap: 30px;
}

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

.nav-links a {
  color: var(--text-primary);
  text-decoration: none;
  padding: 8px 16px;
  border: 2px solid transparent;
  transition: all 0.3s;
  position: relative;
}

.nav-links a:hover {
  color: var(--primary);
  border: 2px solid var(--primary);
  background: var(--bg-secondary);
}

/* Theme Toggle Switch */
.theme-switch-wrapper {
  display: flex;
  align-items: center;
  gap: 10px;
}

.theme-switch {
  position: relative;
  display: inline-block;
  width: 60px;
  height: 30px;
}

.theme-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--border);
  transition: 0.4s;
  border: 2px solid var(--primary);
}

.slider:before {
  position: absolute;
  content: "";
  height: 20px;
  width: 20px;
  left: 3px;
  bottom: 3px;
  background-color: var(--primary);
  transition: 0.4s;
}

input:checked + .slider {
  background-color: var(--bg-secondary);
}

input:checked + .slider:before {
  transform: translateX(30px);
}

.slider i {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  font-size: 14px;
  transition: 0.4s;
}

.slider .fa-sun {
  left: 6px;
  color: #fbbf24;
}

.slider .fa-moon {
  right: 6px;
  color: var(--text-secondary);
}

input:checked + .slider .fa-sun {
  opacity: 0.3;
}

input:checked + .slider .fa-moon {
  color: #60a5fa;
  opacity: 1;
}

.menu-toggle {
  display: none;
  background: none;
  border: 2px solid var(--primary);
  color: var(--primary);
  font-size: 24px;
  cursor: pointer;
  padding: 8px 16px;
}

/* Hero Section */
.hero {
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 60px 20px;
  position: relative;
}

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

.pixel-icon-container {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-bottom: 30px;
  flex-wrap: wrap;
}

.pixel-icon {
  font-size: 60px;
  color: var(--primary);
  animation: float 3s ease-in-out infinite;
}

.pixel-icon:nth-child(2) {
  animation-delay: 0.5s;
  color: var(--secondary);
}

.pixel-icon:nth-child(3) {
  animation-delay: 1s;
  color: var(--accent);
}

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

.hero h1 {
  font-size: clamp(32px, 6vw, 64px);
  margin-bottom: 20px;
  color: var(--text-primary);
  letter-spacing: 2px;
}

.hero .subtitle {
  font-size: clamp(18px, 3vw, 28px);
  margin-bottom: 30px;
  color: var(--primary);
}

.hero p {
  font-size: clamp(14px, 2vw, 18px);
  line-height: 1.8;
  margin-bottom: 40px;
  color: var(--text-secondary);
}

.btn-group {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  padding: 15px 35px;
  border: 2px solid var(--primary);
  background: transparent;
  color: var(--primary);
  text-decoration: none;
  font-size: 16px;
  font-weight: bold;
  cursor: pointer;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}

.btn:hover {
  background: var(--primary);
  color: white;
  transform: translateY(-3px);
  box-shadow: 0 5px 20px var(--shadow);
}

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

.btn-primary:hover {
  background: var(--secondary);
}

.btn i {
  margin-right: 8px;
}

/* Section Styles */
section {
  padding: 80px 20px;
  border-bottom: 1px solid var(--border);
}

.section-title {
  font-size: clamp(32px, 5vw, 48px);
  margin-bottom: 50px;
  text-align: center;
  color: var(--text-primary);
  position: relative;
  display: inline-block;
  left: 50%;
  transform: translateX(-50%);
}

.section-title::after {
  content: "";
  position: absolute;
  bottom: -10px;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--primary);
}

/* Skills Grid */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.skill-card {
  border: 2px solid var(--border);
  padding: 30px;
  background: var(--bg-secondary);
  transition: all 0.3s;
  position: relative;
}

.skill-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 10px 30px var(--shadow);
  border-color: var(--primary);
}

.skill-card i {
  font-size: 48px;
  margin-bottom: 20px;
  display: block;
  color: var(--primary);
}

.skill-card h3 {
  font-size: 24px;
  margin-bottom: 15px;
  color: var(--text-primary);
}

.skill-card p {
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Projects Grid */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.project-card {
  border: 2px solid var(--border);
  padding: 0;
  background: var(--bg-secondary);
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.project-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
  transition: 0.5s;
  z-index: 1;
}

.project-card:hover::before {
  left: 100%;
}

.project-card:hover {
  transform: scale(1.05);
  box-shadow: 0 10px 30px var(--shadow);
  border-color: var(--primary);
}

.project-image {
  width: 100%;
  height: 200px;
  background: var(--bg-primary);
  border-bottom: 2px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.project-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s;
}

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

.project-image i {
  font-size: 60px;
  color: var(--primary);
  opacity: 0.3;
}

.project-content {
  padding: 25px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.project-content h3 {
  font-size: 20px;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.project-card p {
  color: var(--text-secondary);
  margin-bottom: 15px;
  line-height: 1.6;
  font-size: 14px;
  flex: 1;
}

.tech-stack {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 15px;
}

.tech-tag {
  padding: 4px 10px;
  border: 1px solid var(--primary);
  font-size: 11px;
  color: var(--primary);
  background: var(--bg-primary);
}

.project-buttons {
  display: flex;
  gap: 8px;
  margin-top: auto;
}

.btn-small {
  padding: 8px 16px;
  font-size: 12px;
  border: 2px solid var(--primary);
  background: transparent;
  color: var(--primary);
  text-decoration: none;
  cursor: pointer;
  transition: all 0.3s;
  flex: 1;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.btn-small::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: var(--primary);
  transition: 0.3s;
  z-index: -1;
}

.btn-small:hover::before {
  left: 0;
}

.btn-small:hover {
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 5px 15px var(--shadow);
}

.btn-small i {
  margin-right: 5px;
}

.view-all-container {
  text-align: center;
  margin-top: 50px;
}

.btn-view-all {
  padding: 12px 30px;
  font-size: 14px;
  border: 2px solid var(--primary);
  background: transparent;
  color: var(--primary);
  text-decoration: none;
  cursor: pointer;
  transition: all 0.3s;
  display: inline-block;
  font-weight: bold;
}

.btn-view-all:hover {
  background: var(--primary);
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 5px 20px var(--shadow);
}

.btn-view-all i {
  margin-left: 8px;
}

/* About Section */
.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-top: 50px;
}

.about-text h3 {
  font-size: 28px;
  margin-bottom: 20px;
  color: var(--primary);
}

.about-text p {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 20px;
  font-size: 16px;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 30px;
}

.stat-card {
  border: 2px solid var(--border);
  padding: 25px;
  text-align: center;
  background: var(--bg-secondary);
  transition: all 0.3s;
}

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

.stat-card i {
  font-size: 32px;
  color: var(--primary);
  margin-bottom: 10px;
}

.stat-number {
  font-size: 32px;
  font-weight: bold;
  color: var(--text-primary);
  margin-bottom: 5px;
}

.stat-label {
  font-size: 14px;
  color: var(--text-secondary);
}

.about-info {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.info-item {
  border: 2px solid var(--border);
  padding: 20px;
  background: var(--bg-secondary);
  transition: all 0.3s;
}

.info-item:hover {
  border-color: var(--primary);
  box-shadow: 0 5px 20px var(--shadow);
}

.info-item i {
  font-size: 24px;
  color: var(--primary);
  margin-right: 15px;
}

.info-item h4 {
  font-size: 18px;
  color: var(--text-primary);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
}

.info-item p {
  color: var(--text-secondary);
  margin-left: 39px;
  line-height: 1.6;
}

@media (max-width: 968px) {
  .about-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

@media (max-width: 568px) {
  .about-stats {
    grid-template-columns: 1fr;
  }
}

/* Contact Section */
.contact-content {
  max-width: 600px;
  margin: 50px auto;
}

.contact-intro {
  text-align: center;
  margin-bottom: 40px;
}

.contact-intro p {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.8;
}

.contact-form {
  background: var(--bg-secondary);
  padding: 40px;
  border: 2px solid var(--border);
}

.form-group {
  margin-bottom: 25px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  color: var(--text-primary);
  font-weight: bold;
  font-size: 14px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px;
  border: 2px solid var(--border);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: "Courier New", monospace;
  font-size: 14px;
  transition: all 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 10px var(--shadow);
}

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

.form-submit {
  width: 100%;
  padding: 15px;
  border: 2px solid var(--primary);
  background: var(--primary);
  color: white;
  font-family: "Courier New", monospace;
  font-size: 16px;
  font-weight: bold;
  cursor: pointer;
  transition: all 0.3s;
}

.form-submit:hover {
  background: var(--secondary);
  transform: translateY(-2px);
  box-shadow: 0 5px 20px var(--shadow);
}

.form-submit i {
  margin-right: 8px;
}

.social-links {
  display: flex;
  justify-content: center;
  gap: 30px;
  flex-wrap: wrap;
  margin-top: 30px;
}

.social-links a {
  font-size: 40px;
  color: var(--primary);
  transition: all 0.3s;
}

.social-links a:hover {
  color: var(--accent);
  transform: scale(1.2);
}

/* Footer */
footer {
  text-align: center;
  padding: 30px 20px;
  border-top: 2px solid var(--primary);
  background: var(--bg-secondary);
}

footer p {
  color: var(--text-secondary);
}

/* Responsive */
@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }

  .nav-center {
    display: none;
    width: 100%;
    flex-direction: column;
    text-align: center;
    gap: 20px;
  }

  .nav-center.active {
    display: flex;
  }

  .nav-links {
    flex-direction: column;
    gap: 10px;
  }

  nav {
    flex-direction: column;
  }

  .skills-grid,
  .projects-grid {
    grid-template-columns: 1fr;
  }

  .pixel-icon {
    font-size: 40px;
  }

  .theme-switch-wrapper {
    order: -1;
  }

  .nav-center .theme-switch-wrapper {
    order: 3;
  }
}