/* ==========================================
   Modern Portfolio - CSS Variables & Reset
   ========================================== */

:root {
  /* Colors - Dark Theme with Vibrant Accents */
  --color-bg-primary: #0a0a0f;
  --color-bg-secondary: #131320;
  --color-bg-card: rgba(255, 255, 255, 0.05);
  --color-text-primary: #ffffff;
  --color-text-secondary: #b4b4c8;
  --color-accent-primary: #6366f1;
  --color-accent-secondary: #ec4899;
  --color-accent-tertiary: #f97316;
  --color-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --color-gradient-alt: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;

  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-heading: 'Space Grotesk', var(--font-primary);
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;
  --font-size-3xl: 3rem;

  /* Effects */
  --glass-bg: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.1);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

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

/* ==========================================
   Typography
   ========================================== */

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
}

h4 {
  font-size: var(--font-size-xl);
}

a {
  color: var(--color-accent-primary);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--color-accent-secondary);
}

/* ==========================================
   Layout Utilities
   ========================================== */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section {
  padding: var(--spacing-xl) 0;
  position: relative;
}

.section-title {
  text-align: center;
  margin-bottom: var(--spacing-lg);
  position: relative;
}

.section-title h2 {
  background: var(--color-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: inline-block;
}

.section-title::after {
  content: '';
  display: block;
  width: 100px;
  height: 4px;
  background: var(--color-gradient);
  margin: var(--spacing-sm) auto 0;
  border-radius: 2px;
}

/* Glassmorphism Card */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: var(--spacing-md);
  box-shadow: var(--shadow-md);
  transition: var(--transition);
}

.glass-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent-primary);
}

/* ==========================================
   Navigation
   ========================================== */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: var(--spacing-sm) 0;
  transition: var(--transition);
  background: transparent;
}

.navbar.scrolled {
  background: rgba(10, 10, 15, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
}

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

.navbar-brand {
  font-family: var(--font-heading);
  font-size: var(--font-size-xl);
  font-weight: 700;
  background: var(--color-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.navbar-menu {
  display: flex;
  gap: var(--spacing-md);
  list-style: none;
}

.navbar-menu a {
  color: var(--color-text-primary);
  font-weight: 500;
  position: relative;
  padding: 0.5rem 0;
}

.navbar-menu a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-gradient);
  transition: var(--transition);
}

.navbar-menu a:hover::after {
  width: 100%;
}

.navbar-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-text-primary);
  font-size: 1.5rem;
  cursor: pointer;
}

/* ==========================================
   Role Toggle Switch
   ========================================== */

.role-toggle {
  display: flex;
  gap: 0;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 25px;
  padding: 4px;
  backdrop-filter: blur(10px);
}

.role-btn {
  padding: 0.5rem 1.5rem;
  border: none;
  background: transparent;
  color: var(--color-text-secondary);
  font-weight: 600;
  font-size: 0.9rem;
  border-radius: 20px;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.role-btn.active {
  background: var(--color-gradient);
  color: white;
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.4);
}

.role-btn:hover:not(.active) {
  color: var(--color-text-primary);
}

/* ==========================================
   Hero Section
   ========================================== */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding-top: 80px;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-gradient);
  opacity: 0.1;
  z-index: -1;
  animation: gradient-shift 10s ease infinite;
}

@keyframes gradient-shift {

  0%,
  100% {
    transform: translate(0, 0);
  }

  50% {
    transform: translate(50px, 50px);
  }
}

.hero-content {
  text-align: center;
  z-index: 1;
}

.hero-subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-accent-primary);
  margin-bottom: var(--spacing-sm);
  font-weight: 600;
}

.hero-title {
  margin-bottom: var(--spacing-sm);
}

.hero-title span {
  background: var(--color-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.typing-animation {
  font-size: var(--font-size-2xl);
  color: var(--color-accent-secondary);
  min-height: 3rem;
  font-weight: 600;
}

.hero-description {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  max-width: 700px;
  margin: var(--spacing-md) auto;
  text-align: left;
}

.hero-description h3 {
  color: var(--color-accent-primary);
  margin-bottom: var(--spacing-sm);
  text-align: center;
}

.hero-description p {
  margin-bottom: var(--spacing-sm);
  line-height: 1.8;
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
  flex-wrap: wrap;
  margin-top: var(--spacing-md);
}

/* Buttons */
.btn {
  padding: 1rem 2rem;
  border-radius: 12px;
  font-weight: 600;
  font-size: var(--font-size-base);
  cursor: pointer;
  transition: var(--transition);
  border: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-primary {
  background: var(--color-gradient);
  color: white;
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.6);
}

.btn-secondary {
  background: var(--glass-bg);
  border: 2px solid var(--color-accent-primary);
  color: var(--color-text-primary);
}

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

.linkedin-follow-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border-radius: 25px;
  background-color: #0A66C2;
  color: #ffffff !important;
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  transition: background-color 0.3s ease, transform 0.2s ease;
}

.linkedin-follow-btn:hover {
  background-color: #004182;
  transform: translateY(-2px);
}

/* ==========================================
   About Section
   ========================================== */

.about-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--spacing-lg);
  align-items: center;
}

.about-image {
  position: relative;
}

.about-image::before {
  content: '';
  position: absolute;
  inset: -4px;
  background: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-secondary));
  border-radius: 20px;
  z-index: -1;
  opacity: 0.7;
  filter: blur(8px);
  transition: opacity var(--transition-normal);
}

.about-image:hover::before {
  opacity: 1;
}

.about-image img {
  width: 100%;
  border-radius: 16px;
  box-shadow: var(--shadow-lg);
  border: 3px solid rgba(255, 255, 255, 0.1);
  transition: transform var(--transition-normal);
  object-fit: cover;
  aspect-ratio: 1;
}

.about-image:hover img {
  transform: scale(1.02);
}

.about-content h3 {
  color: var(--color-accent-primary);
  margin-bottom: var(--spacing-sm);
}

.about-content p {
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-sm);
  line-height: 1.8;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.stat-item {
  text-align: center;
  padding: var(--spacing-sm);
  background: var(--glass-bg);
  border-radius: 12px;
}

.stat-number {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  background: var(--color-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

/* ==========================================
   Skills Section
   ========================================== */

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-md);
}

.skill-category h4 {
  color: var(--color-accent-primary);
  margin-bottom: var(--spacing-sm);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.skill-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.skill-tag {
  padding: 0.5rem 1rem;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  font-size: 0.9rem;
  transition: var(--transition);
}

.skill-tag:hover {
  background: var(--color-accent-primary);
  border-color: var(--color-accent-primary);
  transform: translateY(-2px);
}

/* ==========================================
   Experience Section
   ========================================== */

.experience-timeline {
  position: relative;
  padding-left: var(--spacing-md);
}

.experience-timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-gradient);
}

.experience-item {
  position: relative;
  margin-bottom: var(--spacing-lg);
  padding-left: var(--spacing-md);
}

.experience-item::before {
  content: '';
  position: absolute;
  left: -9px;
  top: 0;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--color-accent-primary);
  border: 3px solid var(--color-bg-primary);
  box-shadow: 0 0 0 3px var(--color-accent-primary);
}

.experience-date {
  color: var(--color-accent-secondary);
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.experience-item h4 {
  margin-bottom: var(--spacing-xs);
}

.experience-company {
  color: var(--color-text-secondary);
  font-style: italic;
  margin-bottom: var(--spacing-sm);
}

.experience-item ul {
  margin-left: var(--spacing-sm);
  color: var(--color-text-secondary);
}

.experience-item li {
  margin-bottom: 0.5rem;
}

/* ==========================================
   Projects Section
   ========================================== */

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-md);
}

.project-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  overflow: hidden;
  transition: var(--transition);
}

.project-card:hover {
  transform: translateY(-10px);
  border-color: var(--color-accent-primary);
  box-shadow: var(--shadow-lg);
}

.project-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: var(--transition);
}

.project-card:hover .project-image {
  transform: scale(1.05);
}

.project-content {
  padding: var(--spacing-md);
}

.project-content h4 {
  margin-bottom: var(--spacing-sm);
}

.project-content p {
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-sm);
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: var(--spacing-sm);
}

.tech-badge {
  padding: 0.25rem 0.75rem;
  background: var(--color-accent-primary);
  color: white;
  border-radius: 12px;
  font-size: 0.8rem;
}

.project-links {
  display: flex;
  gap: var(--spacing-sm);
}

.project-links a {
  font-size: 0.9rem;
  font-weight: 600;
}

/* ==========================================
   Contact Section
   ========================================== */

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.contact-item {
  text-align: center;
  padding: var(--spacing-md);
}

.contact-icon {
  font-size: 2rem;
  color: var(--color-accent-primary);
  margin-bottom: var(--spacing-sm);
}

.contact-item h4 {
  margin-bottom: var(--spacing-xs);
}

.contact-item a {
  color: var(--color-text-secondary);
}

.social-links {
  display: flex;
  justify-content: center;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.social-link {
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 50%;
  font-size: 1.5rem;
  transition: var(--transition);
}

.social-link:hover {
  background: var(--color-accent-primary);
  border-color: var(--color-accent-primary);
  transform: translateY(-5px);
}

/* ==========================================
   Footer
   ========================================== */

footer {
  text-align: center;
  padding: var(--spacing-md);
  background: var(--color-bg-secondary);
  color: var(--color-text-secondary);
  margin-top: var(--spacing-xl);
}

/* ==========================================
   Animations
   ========================================== */

.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================
   Responsive Design
   ========================================== */

@media (max-width: 768px) {
  .navbar-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 70%;
    height: 100vh;
    background: var(--color-bg-secondary);
    flex-direction: column;
    padding: var(--spacing-lg) var(--spacing-md);
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
  }

  .navbar-menu.active {
    right: 0;
  }

  .navbar-toggle {
    display: block;
  }

  .role-toggle {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
  }

  .role-btn {
    padding: 0.4rem 1rem;
    font-size: 0.8rem;
  }

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

  .about-stats {
    grid-template-columns: 1fr;
  }

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

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

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

  :root {
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
  }
}

@media (max-width: 480px) {
  html {
    font-size: 14px;
  }

  .hero-buttons {
    flex-direction: column;
  }

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