:root {
  /* Default: Neon Glass Developer Theme */
  --bg-color: #0b0f19;
  --bg-gradient: linear-gradient(135deg, #130a2b 0%, #0b0f19 50%, #061e26 100%);
  --text-main: #e2e8f0;
  --text-muted: #94a3b8;
  --accent-1: #8b5cf6;
  --accent-2: #3b82f6;
  --accent-3: #06b6d4;
  --card-bg: rgba(255, 255, 255, 0.03);
  --card-border: rgba(255, 255, 255, 0.08);
  --glow-shadow: 0 0 20px rgba(139, 92, 246, 0.3);
  --glass-blur: blur(12px);
  --popup-bg: rgba(12, 18, 33, 0.92);
}

[data-theme="light"] {
  /* Premium Minimal Beige Theme */
  --bg-color: #f7f5f0;
  --bg-gradient: linear-gradient(135deg, #fdfcfb 0%, #f7f5f0 100%);
  --text-main: #1a1a1a;
  --text-muted: #5a5a5a;
  --accent-1: #d4af37;
  /* Soft Gold */
  --accent-2: #111111;
  --accent-3: #8a7332;
  --card-bg: rgba(255, 255, 255, 0.6);
  --card-border: rgba(0, 0, 0, 0.05);
  --glow-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
  --glass-blur: blur(20px);
  --popup-bg: rgba(255, 255, 255, 0.92);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-color);
  background-image: var(--bg-gradient);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background 0.5s ease, color 0.5s ease;
}

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

/* Typography */
h1,
h2,
h3,
h4 {
  font-weight: 700;
  line-height: 1.2;
}

h1 {
  font-size: 3.5rem;
  margin-bottom: 1rem;
  background: linear-gradient(to right, var(--accent-1), var(--accent-3));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

h2 {
  font-size: 2.5rem;
  margin-bottom: 2rem;
  text-align: center;
}

p {
  color: var(--text-muted);
  font-size: 1.1rem;
}

/* Container */
.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
}

/* Navbar */
nav {
  position: fixed;
  top: 0;
  width: 100%;
  padding: 1.5rem 0;
  z-index: 1000;
  background: var(--card-bg);
  backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--card-border);
  transition: all 0.3s ease;
}

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

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-main);
  text-decoration: none;
  letter-spacing: 1px;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  color: var(--text-main);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s ease;
}

.nav-links a:hover {
  color: var(--accent-1);
}

/* Modern Theme Toggle */
.theme-toggle-modern {
  position: relative;
  width: 64px;
  height: 32px;
  border-radius: 30px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  cursor: pointer;
  display: flex;
  align-items: center;
  padding: 3px;
  transition: all 0.3s ease;
  box-shadow: inset 0 2px 5px rgba(0, 0, 0, 0.2);
}

.theme-toggle-modern:hover {
  box-shadow: var(--glow-shadow);
  border-color: var(--accent-1);
}

.toggle-track {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
  border-radius: 30px;
}

.toggle-thumb {
  position: relative;
  width: 24px;
  height: 24px;
  background: var(--bg-color);
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
  transition: transform 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
  transform: translateX(0);
  z-index: 2;
}

[data-theme="light"] .toggle-thumb {
  transform: translateX(32px);
}

.icon-moon,
.icon-sun {
  position: absolute;
  font-size: 0.9rem;
  transition: opacity 0.4s ease, transform 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.icon-moon {
  opacity: 1;
  transform: rotate(0deg);
}

.icon-sun {
  opacity: 0;
  transform: rotate(90deg);
}

[data-theme="light"] .icon-moon {
  opacity: 0;
  transform: rotate(-90deg);
}

[data-theme="light"] .icon-sun {
  opacity: 1;
  transform: rotate(0deg);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 1.5rem;
  border-radius: 8px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--accent-1);
  color: #fff;
  box-shadow: 0 4px 15px rgba(139, 92, 246, 0.4);
}

[data-theme="light"] .btn-primary {
  background: var(--accent-2);
  color: #fff;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--glow-shadow);
}

.btn-secondary {
  background: transparent;
  color: var(--text-main);
  border: 1px solid var(--card-border);
  backdrop-filter: var(--glass-blur);
}

.btn-secondary:hover {
  background: var(--card-bg);
  border-color: var(--accent-1);
  transform: translateY(-2px);
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 80px;
}

.hero-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 4rem;
}

.hero-content {
  flex: 1;
  max-width: 600px;
}

.hero-image {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
}

.image-container {
  position: relative;
  width: 100%;
  max-width: 350px;
  aspect-ratio: 1;
  border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%;
  overflow: hidden;
  box-shadow: var(--glow-shadow);
  border: 4px solid var(--accent-1);
  background: var(--card-bg);
  backdrop-filter: var(--glass-blur);
  animation: blob 8s ease-in-out infinite;
}

@keyframes blob {
  0% {
    border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%;
  }

  50% {
    border-radius: 30% 60% 70% 40% / 50% 60% 30% 60%;
  }

  100% {
    border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%;
  }
}

.profile-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  top: 0;
  left: 0;
  transition: opacity 0.5s ease;
}

/* Theme-based photo visibility */
.dark-photo {
  opacity: 1;
}

.light-photo {
  opacity: 0;
}

[data-theme="light"] .dark-photo {
  opacity: 0;
}

[data-theme="light"] .light-photo {
  opacity: 1;
}

.hero-subtext {
  font-size: 1.5rem;
  font-weight: 500;
  margin-bottom: 2rem;
  color: var(--accent-3);
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
}

.typing-text::after {
  content: '|';
  animation: blink 1s step-start infinite;
}

@keyframes blink {
  50% {
    opacity: 0;
  }
}

/* Section Styles */
section {
  padding: 5rem 0;
}

/* Cards (Glassmorphism) */
.card {
  background: var(--card-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 2rem;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--glow-shadow);
  border-color: rgba(255, 255, 255, 0.2);
}

[data-theme="light"] .card:hover {
  border-color: var(--accent-1);
}

/* About Section */
.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

/* Skills Section */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1rem;
}

.skill-badge {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  padding: 1rem;
  border-radius: 8px;
  text-align: center;
  font-weight: 600;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.skill-badge:hover {
  background: var(--accent-1);
  color: #fff;
  border-color: transparent;
  transform: scale(1.05);
}

[data-theme="light"] .skill-badge:hover {
  background: var(--accent-1);
  color: #111;
}

/* Experience Timeline */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.timeline::after {
  content: '';
  position: absolute;
  width: 2px;
  background: var(--card-border);
  top: 0;
  bottom: 0;
  left: 20px;
  margin-left: -1px;
}

.timeline-item {
  padding: 1rem 0 1rem 50px;
  position: relative;
}

.timeline-item::after {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  right: auto;
  left: 12px;
  top: 24px;
  background: var(--accent-1);
  border: 4px solid var(--bg-color);
  border-radius: 50%;
  z-index: 1;
}

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

.timeline-content h4 {
  color: var(--accent-3);
  font-size: 1rem;
  margin-bottom: 1rem;
}

.timeline-content ul {
  list-style-type: none;
}

.timeline-content li {
  margin-bottom: 0.5rem;
  position: relative;
  padding-left: 1.5rem;
}

.timeline-content li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--accent-1);
}

/* Projects Section */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.project-card h3 {
  margin-bottom: 1rem;
}

.tech-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.tech-stack span {
  font-size: 0.8rem;
  padding: 0.2rem 0.6rem;
  border-radius: 20px;
  background: rgba(139, 92, 246, 0.2);
  color: var(--accent-1);
}

[data-theme="light"] .tech-stack span {
  background: rgba(212, 175, 55, 0.2);
  color: var(--accent-3);
}

/* Achievements Section */
.achievements-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  text-align: center;
}

.achievement-card h3 {
  font-size: 3rem;
  color: var(--accent-3);
  margin-bottom: 0.5rem;
}

/* Contact Section */
.contact-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.contact-links {
  display: flex;
  gap: 2rem;
  margin-top: 2rem;
  flex-wrap: wrap;
  justify-content: center;
}

.contact-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-main);
  text-decoration: none;
  font-size: 1.2rem;
  transition: color 0.3s ease;
}

.contact-link:hover {
  color: var(--accent-1);
}

/* Popup Styles */
.popup-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.4s ease, visibility 0.4s ease;
}

.popup-overlay.show {
  opacity: 1;
  visibility: visible;
}

.popup-content {
  background: var(--popup-bg);
  backdrop-filter: var(--glass-blur);
  border: 2px solid var(--accent-1);
  padding: 3rem 2rem;
  text-align: center;
  max-width: 400px;
  width: 90%;
  box-shadow: var(--glow-shadow);
  transform: scale(0.8) translateY(20px);
  transition: transform 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  color: var(--text-main);
}

.popup-overlay.show .popup-content {
  transform: scale(1) translateY(0);
}

.bubble-shape {
  border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%;
  animation: blob 8s ease-in-out infinite;
}

.popup-content h3 {
  font-size: 2.2rem;
  margin-bottom: 1rem;
  color: var(--text-main);
}

.popup-content p {
  margin-bottom: 2rem;
  color: var(--text-muted);
  font-size: 1.1rem;
}

/* Animations */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s ease;
}

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

/* Responsive */
@media (max-width: 768px) {
  h1 {
    font-size: 2.5rem;
  }

  h2 {
    font-size: 2rem;
  }

  .nav-links {
    display: none;
  }

  /* Simplified for now */
  .hero-buttons {
    flex-direction: column;
  }

  .hero-wrapper {
    flex-direction: column-reverse;
    text-align: center;
    gap: 2rem;
  }

  .hero-image {
    margin-bottom: 2rem;
  }
}