/* CSS Custom Properties */
/* Preloader Styles */

/* Screen Reader Only Content */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

:root {
  /* Light Theme Colors */
  --primary-color: #6366f1;
  --primary-dark: #4f46e5;
  --secondary-color: #ec4899;
  --accent-color: #06b6d4;
  --text-primary: #1f2937;
  --text-secondary: #6b7280;
  --text-muted: #9ca3af;
  --bg-primary: #ffffff;
  --bg-secondary: #f9fafb;
  --bg-tertiary: #f3f4f6;
  --border-color: #e5e7eb;
  --shadow-light: rgba(0, 0, 0, 0.1);
  --shadow-medium: rgba(0, 0, 0, 0.15);
  --shadow-dark: rgba(0, 0, 0, 0.2);

  /* Glass Effect Colors */
  --glass-bg: rgba(255, 255, 255, 0.1);
  --glass-border: rgba(255, 255, 255, 0.2);
  --glass-shadow: rgba(0, 0, 0, 0.1);

  /* Typography */
  --font-primary: 'Poppins', sans-serif;
  --font-weight-light: 300;
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;

  /* Z-index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal: 1040;
  --z-popover: 1050;
  --z-tooltip: 1060;
}

/* Dark Theme */
[data-theme="dark"] {
  --text-primary: #f9fafb;
  --text-secondary: #d1d5db;
  --text-muted: #9ca3af;
  --bg-primary: #111827;
  --bg-secondary: #1f2937;
  --bg-tertiary: #374151;
  --border-color: #374151;
  --shadow-light: rgba(0, 0, 0, 0.3);
  --shadow-medium: rgba(0, 0, 0, 0.4);
  --shadow-dark: rgba(0, 0, 0, 0.5);
  --glass-bg: rgba(0, 0, 0, 0.2);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-shadow: rgba(0, 0, 0, 0.3);
}

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

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

body {
  font-family: var(--font-primary);
  font-weight: var(--font-weight-regular);
  line-height: 1.6;
  color: var(--text-primary);
  background: linear-gradient(135deg,
      var(--bg-primary) 0%,
      var(--bg-secondary) 50%,
      var(--bg-tertiary) 100%);
  min-height: 100vh;
  overflow-x: hidden;
  transition: all var(--transition-normal);
}

/* Glass Morphism Effect */
.glass {
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  box-shadow: 0 8px 32px var(--glass-shadow);
}

.glass-card {
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-lg);
  box-shadow: 0 8px 32px var(--glass-shadow);
  transition: all var(--transition-normal);
}

.glass-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 40px var(--glass-shadow);
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: var(--font-weight-semibold);
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
}

h1 {
  font-size: 3rem;
}

h2 {
  font-size: 2.5rem;
}

h3 {
  font-size: 2rem;
}

h4 {
  font-size: 1.5rem;
}

h5 {
  font-size: 1.25rem;
}

h6 {
  font-size: 1rem;
}

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

a {
  text-decoration: none;
  color: inherit;
  transition: all var(--transition-fast);
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

/* Section */
.section {
  padding: var(--spacing-2xl) 0;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.section-title {
  color: var(--text-primary);
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 50px;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  border-radius: var(--radius-sm);
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--text-muted);
  margin-top: var(--spacing-sm);
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-fixed);
  padding: var(--spacing-sm) 0;
  transition: all var(--transition-normal);
}

.navbar.scrolled {
  padding: var(--spacing-xs) 0;
  background: var(--glass-bg);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo .logo-text {
  font-size: 1.5rem;
  font-weight: var(--font-weight-bold);
  background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

.nav-link {
  color: var(--text-secondary);
  font-weight: var(--font-weight-medium);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  position: relative;
}

.nav-link:hover {
  color: var(--primary-color);
  background: var(--glass-bg);
}

.nav-controls {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.theme-toggle {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-xs);
  color: var(--text-primary);
  cursor: pointer;
  transition: all var(--transition-fast);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.theme-toggle:hover {
  background: var(--primary-color);
  color: white;
  transform: scale(1.1);
}

.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 4px;
}

.hamburger .bar {
  width: 25px;
  height: 3px;
  background: var(--text-primary);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: -1;
}

.floating-shapes {
  position: absolute;
  width: 100%;
  height: 100%;
}

.shape {
  position: absolute;
  border-radius: 50%;
  background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
  opacity: 0.1;
  animation: float 6s ease-in-out infinite;
}

.shape-1 {
  width: 200px;
  height: 200px;
  top: 20%;
  left: 10%;
  animation-delay: 0s;
}

.shape-2 {
  width: 150px;
  height: 150px;
  top: 60%;
  right: 10%;
  animation-delay: 2s;
}

.shape-3 {
  width: 100px;
  height: 100px;
  bottom: 20%;
  left: 20%;
  animation-delay: 4s;
}

.shape-4 {
  width: 80px;
  height: 80px;
  top: 30%;
  right: 30%;
  animation-delay: 1s;
}

@keyframes float {

  0%,
  100% {
    transform: translateY(0px) rotate(0deg);
  }

  50% {
    transform: translateY(-30px) rotate(180deg);
  }
}

.hero-content {
  text-align: center;
  max-width: 800px;
  padding: 0 var(--spacing-lg);
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
  line-height: 1.1;
}

.hero-subtitle {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: var(--font-weight-medium);
  color: var(--primary-color);
  margin-bottom: var(--spacing-lg);
  min-height: 60px;
  text-align: center;
}

.hero-description {
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

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

.hero-social {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
}

.social-link {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
  font-size: 1.25rem;
  transition: all var(--transition-normal);
}

.social-link:hover {
  background: var(--primary-color);
  color: white;
  transform: translateY(-5px) scale(1.1);
}

.scroll-arrow {
  animation: bounce 2s infinite;
}

.scroll-arrow i {
  font-size: 1.5rem;
  color: var(--text-muted);
}

@keyframes bounce {

  0%,
  20%,
  50%,
  80%,
  100% {
    transform: translateY(0);
  }

  40% {
    transform: translateY(-10px);
  }

  60% {
    transform: translateY(-5px);
  }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-lg);
  border: none;
  border-radius: var(--radius-lg);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: inherit;
  font-size: 1rem;
}

.btn-primary {
  background: linear-gradient(45deg, var(--primary-color), var(--primary-dark));
  color: white;
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
  background: var(--glass-bg);
  color: var(--text-primary);
  border: 1px solid var(--glass-border);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
}

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

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

/* About Section */


.about-text h3 {
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
}

.about-text p {
  margin-bottom: var(--spacing-md);
  line-height: 1.7;
}


.profile-placeholder {
  font-size: 8rem;
  color: white;
  opacity: 0.8;
}

/* Skills Section */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-xl);
  margin-top: var(--spacing-lg);
}

.skill-category h3 {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--text-primary);
  margin-bottom: var(--spacing-lg);
}

.skill-category h3 i {
  color: var(--primary-color);
}

.skills-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.skill-item {
  margin-bottom: var(--spacing-sm);
}

.skill-info {
  display: flex;
  justify-content: space-between;
  margin-bottom: var(--spacing-xs);
}

.skill-name {
  font-weight: var(--font-weight-medium);
  color: var(--text-primary);
}

.skill-card {
  position: relative;
  width: 100%;
  height: 100%;
  text-align: center;
  transition: transform 0.6s;
  transform-style: preserve-3d;
  cursor: pointer;
}

.skill-card-front,
.skill-card-back {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  border-radius: var(--radius-md);
  padding: var(--spacing-sm);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.skill-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-xs);
}

.skill-logo {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.3s ease;
}

.skill-logo:hover {
  transform: scale(1.1);
}

/* Technology-specific logo colors */


.skill-details h4 {
  margin: 0 0 var(--spacing-xs) 0;
  font-size: 1.1rem;
}

.skill-details p {
  margin: 0 0 var(--spacing-sm) 0;
  font-size: 0.875rem;
  opacity: 0.9;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  justify-content: center;
}

.skill-tags span {
  background: rgba(255, 255, 255, 0.2);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
}

/* Tech Stack Grid Layout */
.tech-stack-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: var(--spacing-lg);
  max-width: 800px;
  margin: 0 auto;
  padding: var(--spacing-lg) 0;
}

.tech-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--spacing-md);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
  cursor: pointer;
}

.tech-item:hover {
  transform: translateY(-5px);
  box-shadow:
    0 15px 35px rgba(99, 102, 241, 0.2),
    0 0 20px rgba(99, 102, 241, 0.3);
  border-color: rgba(99, 102, 241, 0.5);
}

.tech-icon {
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-sm);
  transition: transform 0.3s ease;
}

.tech-item:hover .tech-icon {
  transform: scale(1.1);
}

.tech-name {
  font-size: 0.875rem;
  font-weight: var(--font-weight-medium);
  color: var(--text-primary);
  margin: 0;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .tech-stack-grid {
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: var(--spacing-md);
  }

  .tech-item {
    padding: var(--spacing-sm);
  }

  .tech-icon {
    width: 50px;
    height: 50px;
  }

  .tech-name {
    font-size: 0.8rem;
  }
}

/* Enhanced Glowing Hover Effects */
.glass-card {
  transition: all 0.4s ease;
  position: relative;
  overflow: hidden;
}

.glass-card:hover {
  transform: translateY(-8px);
  box-shadow:
    0 25px 50px rgba(99, 102, 241, 0.25),
    0 0 30px rgba(99, 102, 241, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.2);
  border-color: rgba(99, 102, 241, 0.6);
}

.glass-card::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 0.6s ease;
}

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

.project-card:hover {
  transform: translateY(-10px);
  box-shadow:
    0 25px 50px rgba(99, 102, 241, 0.3),
    0 0 30px rgba(99, 102, 241, 0.4);
}

.social-link:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 20px rgba(99, 102, 241, 0.4);
  background: var(--primary-color);
  color: white;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 15px 35px rgba(99, 102, 241, 0.4);
}

.cert-link:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(99, 102, 241, 0.3);
}

/* Additional interactive effects */
.skill-name {
  font-weight: var(--font-weight-medium);
  color: var(--text-primary);
}

.skill-card-front:hover .skill-percentage {
  animation: glow 1.5s ease-in-out infinite alternate;
}

@keyframes glow {
  from {
    text-shadow: 0 0 10px rgba(99, 102, 241, 0.3);
  }

  to {
    text-shadow: 0 0 20px rgba(99, 102, 241, 0.6), 0 0 30px rgba(99, 102, 241, 0.4);
  }
}

/* Projects Section */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-xl);
  margin-top: var(--spacing-lg);
}

.project-card {
  overflow: hidden;
  transition: all var(--transition-normal);
}

.project-image {
  position: relative;
  aspect-ratio: 16/10;
  overflow: hidden;
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-md);
}

.project-placeholder {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  color: white;
  opacity: 0.8;
}

.project-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: all var(--transition-normal);
}

.project-card:hover .project-overlay {
  opacity: 1;
}

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

.project-link {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.25rem;
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  transition: all var(--transition-fast);
}

.project-link:hover {
  background: var(--primary-color);
  transform: scale(1.1);
}

.project-title {
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.project-description {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
  line-height: 1.6;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.tech-tag {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  color: var(--text-secondary);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

/* Timeline */
.timeline {
  position: relative;
  max-width: 850px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--primary-color), var(--secondary-color));
  transform: translateX(-50%);
}

.timeline-item {
  position: relative;
  margin-bottom: var(--spacing-2xl);
}

.timeline-item:nth-child(odd) .timeline-content {
  margin-left: calc(50% + 30px);
}

.timeline-item:nth-child(even) .timeline-content {
  margin-right: calc(50% + 30px);
  text-align: right;
}

.timeline-marker {
  position: absolute;
  left: 50%;
  top: 20px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--primary-color);
  border: 4px solid var(--bg-primary);
  transform: translateX(-50%);
  z-index: 1;
}

.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--spacing-sm);
}

.timeline-item:nth-child(even) .timeline-header {
  flex-direction: row-reverse;
}

.timeline-content h3 {
  color: var(--text-primary);
  margin: 0;
}

.timeline-date {
  background: var(--primary-color);
  color: white;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: var(--font-weight-medium);
  white-space: nowrap;
}

.timeline-content h4 {
  color: var(--text-secondary);
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--spacing-sm);
}

.timeline-content p {
  margin-bottom: var(--spacing-md);
  line-height: 1.6;
}

.timeline-skills {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.timeline-item:nth-child(even) .timeline-skills {
  justify-content: flex-end;
}

.skill-badge {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-md);
  font-size: 0.75rem;
  color: var(--text-secondary);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

/* Certifications */
.certifications-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-xl);
}

.certification-card {
  text-align: center;
  transition: all var(--transition-normal);
}

.cert-icon {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-md);
  font-size: 2rem;
  color: white;
}

.cert-content h3 {
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.cert-issuer {
  color: var(--text-secondary);
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--spacing-xs);
}

.cert-date {
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-bottom: var(--spacing-md);
}

.cert-actions {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
}

.cert-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 0.875rem;
  transition: all var(--transition-fast);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.cert-link:hover {
  background: var(--primary-color);
  color: white;
  transform: translateY(-2px);
}

/* Contact Section */
.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
}

.contact-info h3 {
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
}

.contact-info p {
  margin-bottom: var(--spacing-xl);
  line-height: 1.7;
}

.contact-details {
  margin-bottom: var(--spacing-xl);
}

.contact-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.contact-item i {
  width: 20px;
  color: var(--primary-color);
  font-size: 1.125rem;
}

.contact-item div {
  display: flex;
  flex-direction: column;
}

.contact-label {
  font-size: 0.875rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.contact-value {
  color: var(--text-primary);
  font-weight: var(--font-weight-medium);
}

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

/* Forms */
.form-group {
  margin-bottom: var(--spacing-md);
}

.form-group label {
  display: block;
  margin-bottom: var(--spacing-xs);
  color: var(--text-primary);
  font-weight: var(--font-weight-medium);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--spacing-sm);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  background: var(--glass-bg);
  color: var(--text-primary);
  font-family: inherit;
  transition: all var(--transition-fast);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

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

/* Footer */
.footer {
  background: var(--glass-bg);
  border-top: 1px solid var(--glass-border);
  padding: var(--spacing-lg) 0;
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  margin-top: var(--spacing-2xl);
}



.footer-text p {
  color: var(--text-muted);
  margin-left: 400px;
}



/* Responsive Design */
@media (max-width: 768px) {

  /* Typography adjustments */
  h1 {
    font-size: 2.5rem;
  }

  h2 {
    font-size: 2rem;
  }

  h3 {
    font-size: 1.5rem;
  }

  /* Navigation */
  .nav-menu {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background: var(--glass-bg);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    padding-top: var(--spacing-2xl);
    transition: all var(--transition-normal);
  }

  .nav-menu.active {
    left: 0;
  }

  .nav-menu .nav-item {
    margin-bottom: var(--spacing-md);
  }

  .hamburger {
    display: flex;
  }

  .hamburger.active .bar:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

  .hamburger.active .bar:nth-child(2) {
    opacity: 0;
  }

  .hamburger.active .bar:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
  }

  /* Sections */
  .section {
    padding: var(--spacing-xl) 0;
  }

  .container {
    padding: 0 var(--spacing-md);
  }

  /* Hero */
  .hero-buttons {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-social {
    margin-top: var(--spacing-lg);
  }

  /* About */
  .about-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }

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

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

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

  /* Timeline */
  .timeline::before {
    left: 20px;
  }

  .timeline-item:nth-child(odd) .timeline-content,
  .timeline-item:nth-child(even) .timeline-content {
    margin-left: 50px;
    margin-right: 0;
    text-align: left;
  }

  .timeline-marker {
    left: 20px;
  }

  .timeline-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .timeline-item:nth-child(even) .timeline-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .timeline-skills {
    justify-content: flex-start;
  }

  .timeline-item:nth-child(even) .timeline-skills {
    justify-content: flex-start;
  }

  /* Contact */
  .contact-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }

  /* Footer */
  .footer-content {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-sm);
  }

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

  .hero-subtitle {
    font-size: 1.25rem;
  }

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

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

  .cert-actions {
    flex-direction: column;
  }
}

/* Animation Classes */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

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

/* Utility Classes */
.text-center {
  text-align: center;
}

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

.text-right {
  text-align: right;
}

.mb-0 {
  margin-bottom: 0;
}

.mb-1 {
  margin-bottom: var(--spacing-xs);
}

.mb-2 {
  margin-bottom: var(--spacing-sm);
}

.mb-3 {
  margin-bottom: var(--spacing-md);
}

.mb-4 {
  margin-bottom: var(--spacing-lg);
}

.mt-0 {
  margin-top: 0;
}

.mt-1 {
  margin-top: var(--spacing-xs);
}

.mt-2 {
  margin-top: var(--spacing-sm);
}

.mt-3 {
  margin-top: var(--spacing-md);
}

.mt-4 {
  margin-top: var(--spacing-lg);
}

/* Loading States */
.loading {
  opacity: 0.7;
  pointer-events: none;
}

.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  border: 2px solid var(--primary-color);
  border-top: 2px solid transparent;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% {
    transform: translate(-50%, -50%) rotate(0deg);
  }

  100% {
    transform: translate(-50%, -50%) rotate(360deg);
  }
}

/* Success/Error States */
.success {
  color: #10b981;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.2);
  padding: var(--spacing-sm);
  border-radius: var(--radius-md);
  margin-top: var(--spacing-sm);
}

.error {
  color: #ef4444;
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.2);
  padding: var(--spacing-sm);
  border-radius: var(--radius-md);
  margin-top: var(--spacing-sm);
}

/* Skill Stack Section (modern grid style) */
.skill-stack-flex {
  display: flex;
  align-items: flex-start;
  gap: 3rem;
  flex-wrap: wrap;
}

.skill-stack-heading {
  flex: 0 0 260px;
  min-width: 200px;
  text-align: left;
  margin-top: 2rem;
}


.skill-stack-stack::after {
  content: '';
  position: absolute;
  bottom: 335px;
  left: 20%;
  transform: translateX(-50%);
  width: 50px;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  border-radius: var(--radius-sm);
}

.skill-stack-skill {
  font-size: 4rem;
  font-weight: 700;
  color: #e5e5e5;
  letter-spacing: -2px;
  line-height: 1;
}

.skill-stack-stack {
  font-size: 6rem;
  font-weight: 800;
  color: var(--primary-color, #7c3aed);
  letter-spacing: -4px;
  line-height: 1;
}

.skill-stack-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 1.5rem;
  flex: 1 1 0%;
  align-items: start;
}

.skill-card {
  background: var(--glass-bg, rgba(255, 255, 255, 0.08));
  border: 1px solid var(--glass-border, rgba(255, 255, 255, 0.2));
  border-radius: 1rem;
  box-shadow: 0 2px 8px var(--glass-shadow, rgba(0, 0, 0, 0.08));
  padding: 1.5rem 1rem 1rem 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: transform 0.15s, box-shadow 0.15s;
  cursor: pointer;
  min-width: 110px;
  min-height: 120px;
  position: relative;
  overflow: hidden;
}

.skill-card:hover {
  transition: all var(--transition-normal);
  box-shadow: 0 8px 32px var(--primary-color, #6366f1, 0.18);
  border: 1.5px solid var(--primary-color);
  transform: translateY(-8px) scale(1.04);
}

.skill-icon {
  width: 48px;
  height: 48px;
  margin-bottom: 0.75rem;
  object-fit: contain;
  display: block;
}

.skill-card span {
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--text-primary, #22223b);
  text-align: center;
  margin-top: 0.25rem;
}

@media (max-width: 900px) {
  .skill-stack-flex {
    flex-direction: column;
    align-items: stretch;
    gap: 2rem;
  }

  .skill-stack-heading {
    text-align: center;
    margin-top: 0;
  }
}

/* Greeting Popup Modal */
#greeting-modal {
  display: none;
  position: fixed;
  z-index: 9999;
  left: 0;
  top: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(30, 32, 48, 0.45);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  justify-content: center;
  align-items: center;
}

#greeting-modal.active {
  display: flex;
}

.greeting-modal-content {
  background: var(--glass-bg, rgba(255, 255, 255, 0.18));
  border: 1px solid var(--glass-border, rgba(255, 255, 255, 0.25));
  border-radius: 1.5rem;
  box-shadow: 0 8px 32px var(--glass-shadow, rgba(0, 0, 0, 0.18));
  padding: 2.5rem 2rem 2rem 2rem;
  text-align: center;
  position: relative;
  min-width: 320px;
  max-width: 90vw;
  color: var(--text-primary, #22223b);
}

.greeting-modal-content h2 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
  color: var(--primary-color, #6366f1);
}

.greeting-modal-content p {
  font-size: 1.1rem;
  color: var(--text-secondary, #6b7280);
}

.greeting-close {
  position: absolute;
  top: 1rem;
  right: 1.5rem;
  font-size: 2rem;
  color: var(--text-muted, #9ca3af);
  cursor: pointer;
  transition: color 0.2s;
}

.greeting-close:hover {
  color: var(--primary-color, #6366f1);
}

@media (max-width: 500px) {
  .greeting-modal-content {
    min-width: 0;
    padding: 1.5rem 0.5rem 1rem 0.5rem;
  }
}

.skill-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 60%;
  height: 100%;
  background: linear-gradient(90deg, transparent 30%, rgba(255, 255, 255, 0.2), transparent);
  transform: translateX(-120%);
  transition: transform 0.6s cubic-bezier(0.4, 0.0, 0.2, 1);
  pointer-events: none;
  z-index: 1;
}

.skill-card:hover::before {
  transform: translateX(120%);
}


.project-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 0; /* You can keep this or inherit from wrapper */
  display: block;
}

.logo-wrapper {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: linear-gradient(135deg, #d946ef, #6366f1); /* purple-pink gradient */
  padding: 4px;
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 0 auto 12px auto; /* center and add space below */
  box-shadow: 0 0 8px rgba(99, 102, 241, 0.5);
}

.cert-logo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
  background-color: #fff; /* fallback if image has transparency */
}