/* CSS Variables for Theme Colors */
:root[data-theme="light"] {
  --bg-primary: #ffffff;
  --bg-secondary: #f9f9f9;
  --bg-tertiary: #f0f0f0;
  --text-primary: #000000;
  --text-secondary: #333333;
  --text-muted: #666666;
  --accent-primary: #000000;
  --accent-secondary: #333333;
  --border-color: #e0e0e0;
  --shadow-light: rgba(0, 0, 0, 0.1);
  --shadow-medium: rgba(0, 0, 0, 0.15);
  --nav-bg: #ffffff;
  --nav-border: #e0e0e0;
}

:root[data-theme="dark"] {
  --bg-primary: #000000;
  --bg-secondary: #111111;
  --bg-tertiary: #222222;
  --text-primary: #ffffff;
  --text-secondary: #cccccc;
  --text-muted: #999999;
  --accent-primary: #ffffff;
  --accent-secondary: #cccccc;
  --border-color: #333333;
  --shadow-light: rgba(255, 255, 255, 0.1);
  --shadow-medium: rgba(255, 255, 255, 0.15);
  --nav-bg: #000000;
  --nav-border: #333333;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-primary);
  transition: all 0.3s ease;
}

/* Sidebar Navigation */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: 280px;
  height: 100vh;
  background: var(--nav-bg);
  border-right: 1px solid var(--nav-border);
  z-index: 1000;
  padding: 2rem 0;
  display: flex;
  flex-direction: column;
  box-shadow: 2px 0 10px var(--shadow-light);
  transition: all 0.3s ease;
}

.sidebar-header {
  padding: 0 2rem;
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent-primary);
  text-decoration: none;
  display: flex;
  align-items: center;
}

.theme-toggle {
  background: none;
  border: 2px solid var(--border-color);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: var(--text-primary);
  transition: all 0.3s ease;
}

.theme-toggle:hover {
  background: var(--bg-tertiary);
  transform: scale(1.1);
}

.nav-menu {
  list-style: none;
  padding: 0 1rem;
  flex: 1;
}

.nav-item {
  margin-bottom: 0.5rem;
}

.nav-link {
  display: flex;
  align-items: center;
  padding: 1rem;
  text-decoration: none;
  color: var(--text-secondary);
  border-radius: 12px;
  transition: all 0.3s ease;
  font-weight: 500;
  position: relative;
  overflow: hidden;
}

.nav-link::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 4px;
  height: 100%;
  background: var(--accent-primary);
  transform: scaleY(0);
  transition: transform 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  transform: translateX(8px);
}

.nav-link.active::before {
  transform: scaleY(1);
}

.nav-icon {
  margin-right: 0.75rem;
  font-size: 1.1rem;
}

.sidebar-footer {
  padding: 0 2rem;
  margin-top: auto;
}

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

.social-link {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--bg-tertiary);
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  color: var(--text-secondary);
  transition: all 0.3s ease;
}

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

/* Main Content */
.main-content {
  margin-left: 280px;
  min-height: 100vh;
  transition: margin-left 0.3s ease;
}

.container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Sections */
section {
  padding: 4rem 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 2rem;
  color: var(--text-primary);
  position: relative;
}

.section-title::after {
  content: "";
  position: absolute;
  bottom: -10px;
  left: 0;
  width: 60px;
  height: 4px;
  background: var(--accent-primary);
  border-radius: 2px;
}

/* Hero Section */
.hero {
  background: var(--bg-primary);
}

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

.hero-title {
  font-size: 4rem;
  font-weight: 800;
  margin-bottom: 1rem;
  color: var(--text-primary);
  line-height: 1.2;
}

.hero-subtitle {
  font-size: 1.5rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
  font-weight: 400;
}

.hero-description {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
  font-family: "Monaco", "Menlo", monospace;
  background: var(--bg-tertiary);
  padding: 1rem;
  border-radius: 8px;
  border-left: 4px solid var(--accent-primary);
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  padding: 12px 24px;
  text-decoration: none;
  border-radius: 8px;
  font-weight: 600;
  transition: all 0.3s ease;
  border: 2px solid transparent;
  font-size: 1rem;
}

.btn-primary {
  background: var(--accent-primary);
  color: var(--bg-primary);
  box-shadow: 0 4px 15px var(--shadow-light);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px var(--shadow-medium);
}

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

.btn-secondary:hover {
  background: var(--bg-tertiary);
  border-color: var(--accent-primary);
}

/* About Section */
.about {
  background: var(--bg-secondary);
}

.about-content {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 3rem;
  align-items: start;
}

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

.skills h3 {
  margin-bottom: 1rem;
  color: var(--text-primary);
  font-size: 1.3rem;
}

.skills-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.skills-list span {
  background: var(--bg-primary);
  padding: 8px 16px;
  border: 1px solid var(--border-color);
  border-radius: 20px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  transition: all 0.3s ease;
}

.skills-list span:hover {
  background: var(--accent-primary);
  color: var(--bg-primary);
  transform: translateY(-2px);
}

/* Projects Section */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.project-card {
  padding: 2rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.project-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--accent-primary);
}

.project-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px var(--shadow-medium);
  border-color: var(--accent-primary);
}

.project-card h3 {
  font-size: 1.4rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.project-card p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

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

.project-tech span {
  background: var(--bg-tertiary);
  padding: 6px 12px;
  border-radius: 12px;
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-weight: 500;
}

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

.project-links a {
  color: var(--accent-primary);
  text-decoration: none;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.25rem;
  transition: all 0.3s ease;
}

.project-links a:hover {
  color: var(--accent-secondary);
  transform: translateX(4px);
}

/* Contact Section */
.contact {
  background: var(--bg-secondary);
}

.contact-content {
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}

.contact-content p {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

.contact-links {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.contact-links a {
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 600;
  padding: 14px 28px;
  background: var(--bg-primary);
  border: 2px solid var(--border-color);
  border-radius: 12px;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.contact-links a:hover {
  background: var(--accent-primary);
  color: var(--bg-primary);
  border-color: var(--accent-primary);
  transform: translateY(-2px);
}
/* Logos */
:root[data-theme="dark"] .social-link img,
:root[data-theme="dark"] .project-links img,
:root[data-theme="dark"] .contact-links img {
  filter: invert(1);
}

/* Form Styles */
.message-form {
  text-align: left;
}

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

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--border-color);
  border-radius: 8px;
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 1rem;
  font-family: inherit;
  transition: border-color 0.3s ease, background-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent-primary);
  background: var(--bg-primary);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}

.message-form .btn {
  width: 100%;
  justify-content: center;
  font-size: 1.1rem;
  padding: 14px 24px;
}

/* Footer */
.footer {
  font-size: 15px;
  text-align: center;
  justify-content: center;
  padding: 0.1rem 0;
}

/* Notification Styles */
.simple-notification {
  position: fixed;
  top: 20px;
  right: 20px;
  padding: 15px 20px;
  border-radius: 8px;
  color: white;
  font-weight: 500;
  z-index: 9999;
  transform: translateX(100%);
  opacity: 0;
  transition: all 0.3s ease;
  max-width: 300px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.simple-notification.show {
  transform: translateX(0);
  opacity: 1;
}

.simple-notification.success {
  background-color: #10b981;
}

.simple-notification.error {
  background-color: #ef4444;
}

/* Mobile Styles */
.mobile-menu-toggle {
  display: none;
  position: fixed;
  top: 1rem;
  left: 1rem;
  z-index: 1001;
  background: var(--accent-primary);
  color: white;
  border: none;
  border-radius: 8px;
  padding: 10px;
  cursor: pointer;
  font-size: 1.2rem;
}

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

  .sidebar {
    transform: translateX(-100%);
    width: 100%;
    max-width: 300px;
  }

  .sidebar.active {
    transform: translateX(0);
  }

  .main-content {
    margin-left: 0;
    padding-top: 4rem;
  }

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

  .section-title {
    font-size: 2rem;
  }

  .about-content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

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

  .hero-buttons,
  .contact-links {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    max-width: 200px;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 1rem;
  }

  section {
    padding: 3rem 0;
  }

  .hero-title {
    font-size: 2rem;
  }

  .hero-subtitle {
    font-size: 1.2rem;
  }

  .project-card {
    padding: 1.5rem;
  }

  .simple-notification {
    right: 10px;
    left: 10px;
    max-width: none;
    text-align: center;
  }
}

/* Smooth scrolling animation */
html {
  scroll-behavior: smooth;
}