* {
  font-family:
    'Inter',
    system-ui,
    -apple-system,
    sans-serif;
}

:root {
  --primary: #3b82f6;
  --primary-dark: #1e40af;
  --primary-light: #dbeafe;
  --accent: #06b6d4;
  --dark: #0f172a;
  --text-primary: #0f172a;
  --text-secondary: #64748b;
  --border: #cbd5e1;
  --bg-light: #f8fafc;
  --glass-bg: rgba(241, 245, 249, 0.7);
  --glass-border: rgba(203, 213, 225, 0.3);
}

body {
  transition:
    background-color 0.3s ease,
    color 0.3s ease;
  color: var(--text-primary);
  background: linear-gradient(135deg, #ffffff 0%, #f0f9ff 100%);
  min-height: 100vh;
}

body.dark-mode {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  color: #f1f5f9;
}

body.dark-mode .glass-effect {
  --glass-bg: rgba(15, 23, 42, 0.7);
  --glass-border: rgba(148, 163, 184, 0.2);
}

html {
  scroll-behavior: smooth;
}

.glass-effect {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
}

.nav-link {
  position: relative;
  transition: color 0.3s ease;
  font-weight: 500;
}

.nav-link::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: -5px;
  left: 0;
  background-color: var(--primary);
  transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-link.active {
  color: var(--primary);
}

/* Hero section gradient background */
.hero-gradient {
  background: linear-gradient(135deg, #3b82f6 0%, #0ea5e9 50%, #06b6d4 100%);
  position: relative;
  overflow: hidden;
}

.hero-gradient::before {
  content: '';
  position: absolute;
  width: 500px;
  height: 500px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 50%;
  top: -150px;
  right: -100px;
  animation: float 8s ease-in-out infinite;
}

.hero-gradient::after {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 50%;
  bottom: -100px;
  left: -50px;
  animation: float 10s ease-in-out infinite reverse;
}

/* Animations */
@keyframes float {
  0%,
  100% {
    transform: translateY(0px);
  }

  50% {
    transform: translateY(20px);
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes pulse-slow {
  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.8;
  }
}

.animate-fade-in-up {
  animation: fadeInUp 0.6s ease-out forwards;
}

.animate-slide-in-left {
  animation: slideInLeft 0.6s ease-out forwards;
}

.animate-slide-in-right {
  animation: slideInRight 0.6s ease-out forwards;
}

/* Stagger animation for multiple elements */
[class*='stagger'] > * {
  animation: fadeInUp 0.6s ease-out forwards;
}

[class*='stagger'] > :nth-child(1) {
  animation-delay: 0.1s;
}

[class*='stagger'] > :nth-child(2) {
  animation-delay: 0.2s;
}

[class*='stagger'] > :nth-child(3) {
  animation-delay: 0.3s;
}

[class*='stagger'] > :nth-child(4) {
  animation-delay: 0.4s;
}

[class*='stagger'] > :nth-child(5) {
  animation-delay: 0.5s;
}

[class*='stagger'] > :nth-child(6) {
  animation-delay: 0.6s;
}

/* Card hover effects */
.card-hover {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  transform: translateY(0);
}

.card-hover:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

/* Skill card styles */
.skill-card {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 80px;
  height: 80px;
  border-radius: 12px;
  background: var(--bg-light);
  border: 2px solid var(--border);
  transition: all 0.3s ease;
}

body.dark-mode .skill-card {
  background: rgba(15, 23, 42, 0.5);
  border-color: rgba(148, 163, 184, 0.2);
}

.skill-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.3);
  font-size: 0.875rem;
  font-weight: 500;
  transition: all 0.3s ease;
}

body.dark-mode .skill-badge {
  background: rgba(59, 130, 246, 0.15);
  border-color: rgba(59, 130, 246, 0.4);
}

.skill-badge:hover {
  background: rgba(59, 130, 246, 0.2);
  border-color: rgba(59, 130, 246, 0.5);
  transform: translateY(-2px);
}

.skill-card:hover {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
  transform: scale(1.1) rotate(5deg);
  box-shadow: 0 10px 25px -5px rgba(59, 130, 246, 0.3);
}

.skill-card img {
  width: 48px;
  height: 48px;
  object-fit: contain;
  filter: grayscale(0.3);
  transition: filter 0.3s ease;
}

.skill-card:hover img {
  filter: grayscale(0);
}

/* Button styles */
.btn-primary {
  background: linear-gradient(
    135deg,
    var(--primary) 0%,
    var(--primary-dark) 100%
  );
  color: white;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-weight: 500;
  cursor: pointer;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px -5px rgba(59, 130, 246, 0.4);
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.2);
  transition: left 0.3s ease;
}

.btn-primary:hover::before {
  left: 100%;
}

/* Section headings */
.section-heading {
  position: relative;
  display: inline-block;
  font-size: 1.875rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
}

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

/* Timeline styles */
.timeline-item {
  position: relative;
  padding-left: 40px;
  margin-bottom: 2rem;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  width: 20px;
  height: 20px;
  background: var(--primary);
  border-radius: 50%;
  border: 3px solid white;
  box-shadow: 0 0 0 3px var(--primary);
}

body.dark-mode .timeline-item::before {
  border-color: var(--dark);
  box-shadow: 0 0 0 3px var(--primary);
}

.timeline-item::after {
  content: '';
  position: absolute;
  left: 8px;
  top: 30px;
  width: 4px;
  height: calc(100% + 20px);
  background: rgba(59, 130, 246, 0.3);
}

body.dark-mode .timeline-item::after {
  background: rgba(148, 163, 184, 0.2);
}

.timeline-item:last-child::after {
  display: none;
}

/* Project card */
.project-card {
  background: white;
  border-radius: 12px;
  overflow: hidden;
  transition: all 0.3s ease;
  border: 1px solid var(--border);
}

body.dark-mode .project-card {
  background: rgba(15, 23, 42, 0.7);
  border-color: rgba(148, 163, 184, 0.2);
}

.project-card:hover {
  transform: translateY(-8px);
  border-color: var(--primary);
  box-shadow: 0 20px 25px -5px rgba(59, 130, 246, 0.15);
}

/* Sticky navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 40;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  transition: all 0.3s ease;
  transform: translateY(-100%);
}

body.dark-mode .navbar {
  background: rgba(15, 23, 42, 0.95);
  border-bottom-color: rgba(148, 163, 184, 0.2);
}

.navbar.visible {
  transform: translateY(0);
}

/* Scroll to top button */
.scroll-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  background: var(--primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  z-index: 30;
  border: none;
  box-shadow: 0 10px 25px -5px rgba(59, 130, 246, 0.3);
}

.scroll-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.scroll-to-top:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 35px -5px rgba(59, 130, 246, 0.4);
}

/* Form styles */
.form-input {
  transition: all 0.3s ease;
  background: var(--bg-light);
  border: 2px solid var(--border);
  border-radius: 8px;
}

body.dark-mode .form-input {
  background: rgba(15, 23, 42, 0.5);
  border-color: rgba(148, 163, 184, 0.2);
  color: #f1f5f9;
}

.form-input:focus {
  outline: none;
  border-color: var(--primary);
  background: white;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

body.dark-mode .form-input:focus {
  background: rgba(15, 23, 42, 0.7);
}

/* Dark mode toggle */
.toggle-checkbox {
  display: none;
}

.toggle-label {
  display: flex;
  align-items: center;
  cursor: pointer;
  position: relative;
  width: 50px;
  height: 28px;
  background: var(--border);
  border-radius: 14px;
  transition: all 0.3s ease;
  margin-left: auto;
}

body.dark-mode .toggle-label {
  background: var(--primary);
}

.toggle-label::after {
  content: '';
  position: absolute;
  width: 24px;
  height: 24px;
  background: white;
  border-radius: 50%;
  left: 2px;
  transition: all 0.3s ease;
}

.toggle-checkbox:checked + .toggle-label::after {
  left: 24px;
}

/* Intersection Observer animations */
.fade-in-section {
  opacity: 0;
  transform: translateY(30px);
  transition:
    opacity 0.6s ease-out,
    transform 0.6s ease-out;
}

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

/* Responsive adjustments */
@media (max-width: 768px) {
  .hero-gradient::before,
  .hero-gradient::after {
    width: 200px;
    height: 200px;
  }

  .skill-card {
    width: 70px;
    height: 70px;
  }

  .skill-card img {
    width: 40px;
    height: 40px;
  }

  .scroll-to-top {
    width: 45px;
    height: 45px;
    bottom: 20px;
    right: 20px;
  }

  .section-heading {
    font-size: 1.5rem;
  }
}

/* Enhanced Project Card with Glassmorphism */
.project-card:hover {
  border-color: rgba(59, 130, 246, 0.5);
  box-shadow:
    0 25px 50px -12px rgba(59, 130, 246, 0.1),
    inset 0 1px 0 0 rgba(255, 255, 255, 0.1);
}

/* Smooth transitions for all interactive elements */
a,
button,
input,
textarea,
select {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Enhanced focus states for accessibility */
input:focus,
textarea:focus {
  outline: 2px solid rgba(59, 130, 246, 0.5);
  outline-offset: 2px;
}

/* Smooth Fade In Animation */
.animate-fade-in {
  animation: fadeInUp 0.6s ease-out forwards;
}

/* Smooth Slide Animation for Tab Content */
@keyframes slideInContent {
  from {
    opacity: 0;
    transform: translateX(20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.slide-in {
  animation: slideInContent 0.4s ease-out forwards;
}

/* Tab Button Styles */
.skills-category-btn,
.projects-tab-btn {
  position: relative;
  overflow: hidden;
}

.skills-category-btn::before,
.projects-tab-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: rgba(59, 130, 246, 0.1);
  transition: left 0.3s ease;
  z-index: -1;
}

.skills-category-btn:hover::before,
.projects-tab-btn:hover::before {
  left: 0;
}

.skills-category-btn.active,
.projects-tab-btn.active {
  font-weight: 600;
}

/* Skill Card Styles - Updated */
.skill-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  padding: 1.5rem 1rem;
  border-radius: 12px;
  background: rgba(241, 245, 249, 0.6);
  border: 1px solid rgba(203, 213, 225, 0.5);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: default;
  position: relative;
  overflow: hidden;
}

body.dark-mode .skill-item {
  background: rgba(15, 23, 42, 0.6);
  border-color: rgba(148, 163, 184, 0.2);
}

.skill-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.2),
    transparent
  );
  transition: left 0.5s ease;
}

.skill-item:hover {
  transform: translateY(-8px);
  border-color: rgba(59, 130, 246, 0.6);
  background: rgba(219, 234, 254, 0.8);
  box-shadow: 0 10px 30px -5px rgba(59, 130, 246, 0.2);
}

body.dark-mode .skill-item:hover {
  background: rgba(59, 130, 246, 0.15);
  border-color: rgba(59, 130, 246, 0.5);
  box-shadow: 0 10px 30px -5px rgba(59, 130, 246, 0.15);
}

.skill-item:hover::before {
  left: 100%;
}

.skill-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  transition: transform 0.3s ease;
}

.skill-item:hover .skill-icon {
  transform: scale(1.15) rotate(-5deg);
}

.skill-name {
  font-size: 0.875rem;
  font-weight: 600;
  text-align: center;
  color: var(--text-primary);
}

body.dark-mode .skill-name {
  color: #f1f5f9;
}

.skill-level {
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: rgba(59, 130, 246, 0.1);
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  transition: all 0.3s ease;
}

body.dark-mode .skill-level {
  background: rgba(59, 130, 246, 0.2);
}

.skill-item:hover .skill-level {
  background: rgba(59, 130, 246, 0.3);
  color: var(--primary);
}

/* Project Card Styles - Minimal Design */
.minimal-project-card {
  display: block;
  background: transparent;
  border-left: 4px solid var(--primary);
  padding: 1.5rem;
  border-radius: 0;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

body.dark-mode .minimal-project-card {
  border-left-color: var(--primary);
}

.minimal-project-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  width: 4px;
  height: 0%;
  background: linear-gradient(180deg, var(--primary), var(--accent));
  transition: height 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: -1;
}

.minimal-project-card:hover {
  padding-left: 2rem;
  background: rgba(59, 130, 246, 0.04);
}

body.dark-mode .minimal-project-card:hover {
  background: rgba(59, 130, 246, 0.08);
}

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

.project-minimal-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 0.75rem;
  gap: 1rem;
}

.project-minimal-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
  transition: color 0.3s ease;
}

body.dark-mode .project-minimal-title {
  color: #f1f5f9;
}

.minimal-project-card:hover .project-minimal-title {
  color: var(--primary);
}

.project-minimal-status {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.75rem;
  padding: 0.25rem 0.75rem;
  background: rgba(34, 197, 94, 0.1);
  color: #22c55e;
  border-radius: 12px;
  font-weight: 600;
  flex-shrink: 0;
}

.project-minimal-meta {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 0.75rem;
}

.project-minimal-meta-item {
  font-size: 0.8rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.project-minimal-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 1rem;
}

body.dark-mode .project-minimal-desc {
  color: #cbd5e1;
}

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

.minimal-tech-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.3rem 0.6rem;
  border-radius: 4px;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.2);
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--primary);
  transition: all 0.2s ease;
}

body.dark-mode .minimal-tech-badge {
  background: rgba(59, 130, 246, 0.12);
  border-color: rgba(59, 130, 246, 0.3);
}

.minimal-tech-badge:hover {
  background: rgba(59, 130, 246, 0.15);
  border-color: rgba(59, 130, 246, 0.4);
  transform: translateY(-1px);
}

.minimal-tech-badge img {
  width: 12px;
  height: 12px;
  opacity: 0.8;
}

.project-minimal-links {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.minimal-project-link {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.4rem 0.8rem;
  border-radius: 4px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--primary);
  text-decoration: none;
  background: rgba(59, 130, 246, 0.05);
  border: 1px solid rgba(59, 130, 246, 0.2);
  transition: all 0.2s ease;
}

body.dark-mode .minimal-project-link {
  background: rgba(59, 130, 246, 0.08);
  border-color: rgba(59, 130, 246, 0.3);
}

.minimal-project-link:hover {
  background: rgba(59, 130, 246, 0.1);
  border-color: rgba(59, 130, 246, 0.4);
  transform: translateY(-2px);
}

/* Remove old project styles */
.project-item {
  display: none !important;
}

.project-header,
.project-title,
.project-link,
.project-description,
.project-highlights,
.project-highlight,
.project-stack,
.tech-tag,
.project-actions,
.project-btn {
  display: none !important;
}