:root {
  --bg-primary: #FFFFFF;
  --bg-secondary: #F9FAFB;
  --bg-glass: rgba(255, 255, 255, 0.8);
  --accent-primary: #111827; /* Black */
  --accent-secondary: #374151; /* Dark Gray */
  --accent-light: #E5E7EB; /* Light Gray */
  --text-primary: #111827;
  --text-secondary: #4B5563;
  --border-glass: rgba(0, 0, 0, 0.08);
  --glow: 0 4px 20px rgba(0, 0, 0, 0.06);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Outfit', sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  background-image: 
    radial-gradient(circle at 15% 50%, rgba(0, 0, 0, 0.02), transparent 25%),
    radial-gradient(circle at 85% 30%, rgba(0, 0, 0, 0.02), transparent 25%);
}

#canvas-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  pointer-events: none;
}

/* Utilities */
.text-accent {
  color: var(--accent-secondary);
}

.glass {
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: 16px;
}

.glow-on-hover:hover {
  box-shadow: var(--glow);
  transform: translateY(-5px);
  transition: all 0.3s ease;
}

/* Navbar */
nav {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 100;
  padding: 20px 0;
  transition: all 0.3s ease;
  background: transparent;
}

nav.scrolled {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  padding: 15px 0;
  border-bottom: 1px solid var(--border-glass);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 20px;
}

.logo {
  font-family: 'Montserrat', sans-serif;
  font-weight: 500;
  font-size: 1.25rem;
  letter-spacing: 1px;
  text-decoration: none;
  color: var(--text-primary);
}

.nav-links {
  display: flex;
  gap: 25px;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.3s ease;
}

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

/* Sections Global */
section {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 100px 20px;
  max-width: 1200px;
  margin: 0 auto;
}

h2.section-title {
  font-size: 2.5rem;
  margin-bottom: 50px;
  text-align: center;
}

/* Hero Section */
.hero {
  flex-direction: row;
  align-items: center;
  gap: 60px;
}

.hero-content {
  flex: 1;
}

.open-to-work {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-glass);
  padding: 8px 16px;
  border-radius: 30px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 30px;
}

.pulse-dot {
  width: 10px;
  height: 10px;
  background-color: #22c55e;
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.4); }
  70% { box-shadow: 0 0 0 10px rgba(34, 197, 94, 0); }
  100% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0); }
}

.hero-title {
  font-family: 'Montserrat', sans-serif;
  font-size: 2.6rem;
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: 1.5px;
  margin-bottom: 15px;
  color: var(--accent-primary);
  white-space: nowrap;
}

.hero-subtitle {
  font-size: 1.8rem;
  font-weight: 600;
  margin-bottom: 20px;
  color: var(--accent-secondary);
}

.hero-desc {
  color: var(--text-secondary);
  font-size: 1.1rem;
  max-width: 600px;
  margin-bottom: 40px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 20px;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 30px;
  background: var(--accent-primary);
  color: #FFFFFF;
  border: none;
  border-radius: 30px;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s;
}

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

.btn-download {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 30px;
  background: var(--accent-primary);
  color: #FFFFFF;
  border: none;
  border-radius: 30px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  font-family: inherit;
  transition: all 0.3s ease;
  cursor: pointer;
}

.btn-download:hover {
  background: var(--accent-secondary);
  transform: translateY(-2px);
  box-shadow: var(--glow);
}

.btn-download i {
  width: 18px;
  height: 18px;
}

.social-links {
  display: flex;
  gap: 12px;
}

.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 45px;
  height: 45px;
  border-radius: 50%;
  border: 1px solid var(--border-glass);
  color: var(--text-secondary);
  background: var(--bg-primary);
  transition: all 0.3s;
}

.social-links a:hover {
  color: var(--accent-primary);
  border-color: var(--accent-primary);
  transform: translateY(-3px);
}

.hero-image-container {
  flex: 1;
  display: flex;
  justify-content: flex-end;
}

.profile-img {
  width: 100%;
  max-width: 260px;
  aspect-ratio: 1/1;
  border-radius: 50%;
  object-fit: cover;
  border: 12px solid var(--bg-primary);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
  animation: floatProfile 6s ease-in-out infinite;
  will-change: transform;
}

@keyframes floatProfile {
  0% { transform: translateY(0px) scale(1); }
  50% { transform: translateY(-12px) scale(1.02); }
  100% { transform: translateY(0px) scale(1); }
}

.hero-image-placeholder {
  width: 100%;
  max-width: 400px;
  aspect-ratio: 4/5;
  background: var(--bg-secondary);
  border: 1px dashed rgba(0,0,0,0.2);
  border-radius: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

/* About Section CSS Animations */
.about-decoration {
  position: absolute;
  top: 50%;
  margin-top: -100px; /* offset half height */
  z-index: 0;
  pointer-events: none;
}

.about-decoration.left {
  left: 5%;
}

.about-decoration.right {
  right: 5%;
}

.tech-ring {
  width: 200px;
  height: 200px;
  border: 1px dashed var(--text-secondary);
  border-radius: 50%;
  opacity: 0.3;
  animation: spin 30s linear infinite;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  will-change: transform;
}

.tech-ring::before {
  content: '';
  width: 140px;
  height: 140px;
  border: 1px solid var(--border-glass);
  border-radius: 50%;
  position: absolute;
  animation: spinReverse 20s linear infinite;
}

.tech-ring::after {
  content: '';
  width: 80px;
  height: 80px;
  background: var(--bg-glass);
  box-shadow: 0 0 30px rgba(0,0,0,0.08);
  border-radius: 50%;
  position: absolute;
}

.data-node {
  width: 150px;
  height: 150px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 15px;
  opacity: 0.4;
  animation: floatNode 8s ease-in-out infinite;
  will-change: transform;
}

.data-node span {
  background: var(--text-secondary);
  border-radius: 6px;
  opacity: 0.2;
  animation: pulseData 3s ease-in-out infinite alternate;
}

.data-node span:nth-child(2n) { animation-delay: 0.5s; opacity: 0.4; }
.data-node span:nth-child(3n) { animation-delay: 1.2s; opacity: 0.1; }

@keyframes spin { 100% { transform: rotate(360deg); } }
@keyframes spinReverse { 100% { transform: rotate(-360deg); } }
@keyframes floatNode {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-20px) rotate(5deg); }
}
@keyframes pulseData {
  0% { transform: scale(0.8); background: var(--border-glass); }
  100% { transform: scale(1.1); background: var(--text-secondary); }
}

/* Skills/About/Certificates Grids */
.certificate-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.certificate-card {
  padding: 30px;
  text-align: center;
  transition: all 0.3s ease;
}

.certificate-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--glow);
}

.skill-card {
  padding: 25px 20px;
  text-align: left;
  border-radius: 24px;
  transition: all 0.3s ease;
}
.skill-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--glow);
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.skill-tag {
  font-size: 0.8rem;
  padding: 6px 12px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-glass);
  border-radius: 20px;
  color: var(--text-primary);
  font-weight: 500;
  transition: all 0.3s ease;
}

.skill-tag:hover {
  background: var(--text-primary);
  color: var(--bg-primary);
  transform: translateY(-2px);
  box-shadow: var(--glow);
}

.btn-icon {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-primary);
  border: 1px solid var(--border-glass);
  color: var(--text-secondary);
  transition: all 0.3s ease;
}

.btn-icon:hover {
  background: var(--bg-secondary);
  color: var(--accent-primary);
  transform: translateY(-3px);
  box-shadow: var(--glow);
}

.btn-icon svg {
  stroke: currentColor !important;
  fill: none;
}

.skill-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: var(--bg-secondary);
  color: var(--accent-primary);
}

/* Experience Timeline */
.timeline {
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-width: 800px;
  margin: 0 auto;
  border-left: 2px solid var(--accent-light);
  padding-left: 30px;
}

.timeline-item {
  position: relative;
  padding: 30px;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -37px;
  top: 35px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent-primary);
  border: 4px solid var(--bg-primary);
}

.timeline-date {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 600;
  margin-bottom: 5px;
}

/* Projects Grid */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 40px;
}

.project-card {
  overflow: hidden;
  position: relative;
}

.project-img {
  width: 100%;
  height: 220px;
  background: var(--bg-secondary);
  background-size: cover;
  background-position: center;
  border-bottom: 1px solid var(--border-glass);
}

.project-content {
  padding: 30px;
}

.project-title {
  font-size: 1.4rem;
  margin-bottom: 10px;
  color: var(--accent-primary);
}

.project-tags {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.project-tag {
  font-size: 0.75rem;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  padding: 6px 14px;
  border-radius: 20px;
  font-weight: 600;
}

/* Fade in animations for scrolling */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

@media (max-width: 900px) {
  .hero {
    flex-direction: column-reverse;
    text-align: center;
    padding-top: 150px;
  }
  .hero-actions {
    justify-content: center;
  }
  .hero-image-container {
    justify-content: center;
    width: 100%;
  }
}

@media (max-width: 1250px) {
  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 1100px) {
  .about-decoration {
    display: none;
  }
}

@media (max-width: 650px) {
  .skills-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .contact-grid {
    grid-template-columns: 1fr !important;
  }
  .form-row {
    flex-direction: column !important;
  }
  .hero-title {
    font-size: 2rem;
    white-space: normal;
  }
  .nav-links {
    display: none;
  }
}
  

/* Tab Navigation */
.tab-btn {
  padding: 12px 28px;
  background: var(--bg-primary);
  border: 1px solid var(--border-glass);
  border-radius: 30px;
  color: var(--text-secondary);
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
}

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

.tab-btn.active {
  background: var(--accent-primary);
  color: var(--bg-primary);
  border-color: var(--accent-primary);
  box-shadow: var(--glow);
}

.tab-content {
  opacity: 0;
  transform: translateY(10px);
  transition: all 0.5s ease;
}

.corner-logo-fixed {
    position: absolute !important;
    top: 15px !important;
    right: 20px !important;
    object-fit: contain !important;
    z-index: 100 !important;
    pointer-events: none;
}

/* Premium Horizontal Project Cards */
.projects-list {
  display: flex;
  flex-direction: column;
  gap: 30px;
  max-width: 1100px;
  margin: 0 auto;
}

.project-card-horizontal {
  display: flex;
  align-items: center;
  padding: 25px;
  gap: 30px;
  border-radius: 24px;
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  position: relative;
  overflow: hidden;
}

.project-card-horizontal:hover {
  transform: translateY(-5px) scale(1.01);
  box-shadow: 0 20px 40px rgba(0,0,0,0.08), var(--glow);
}

.project-icon-container {
  width: 140px;
  height: 140px;
  flex-shrink: 0;
  border-radius: 20px;
  overflow: hidden;
  background: var(--bg-secondary);
  border: 1px solid var(--border-glass);
}

.project-icon-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.project-main-content {
  flex: 1;
}

.project-main-content h3 {
  font-size: 1.5rem;
  margin-bottom: 8px;
  color: var(--text-primary);
  line-height: 1.3;
}

.project-subtitle {
  font-size: 0.95rem;
  color: var(--accent-primary);
  font-weight: 600;
  margin-bottom: 12px;
}

.project-description {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 20px;
  max-width: 600px;
}

.project-stats-container {
  display: flex;
  gap: 15px;
  flex-shrink: 0;
}

.project-stat-box {
  background: var(--bg-secondary);
  border: 1px solid var(--border-glass);
  padding: 15px;
  border-radius: 16px;
  text-align: center;
  min-width: 100px;
  transition: all 0.3s ease;
}

.project-stat-box:hover {
  background: var(--bg-primary);
  border-color: var(--accent-primary);
}

.stat-value {
  display: block;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.stat-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-secondary);
  font-weight: 600;
}

.project-action-arrow {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-secondary);
  border: 1px solid var(--border-glass);
  color: var(--text-primary);
  transition: all 0.3s ease;
  flex-shrink: 0;
}

.project-card-horizontal:hover .project-action-arrow {
  background: var(--accent-primary);
  color: white;
  transform: rotate(-45deg);
}

/* Responsive Stacking */
@media (max-width: 992px) {
  .project-card-horizontal {
    flex-direction: column;
    align-items: flex-start;
    gap: 20px;
  }
  .project-stats-container {
    width: 100%;
    justify-content: flex-start;
    flex-wrap: wrap;
  }
}
/* Certifications & Courses Dual Column Layout */
.cert-course-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-top: 50px;
}

.cert-column h3 {
    font-size: 1.6rem;
    margin-bottom: 25px;
    color: var(--text-primary);
    border-bottom: 2px solid var(--accent-light);
    padding-bottom: 10px;
    display: inline-block;
}

.cert-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.premium-cert-card {
    display: flex;
    align-items: center;
    padding: 20px 25px;
    gap: 20px;
    border-radius: 16px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-decoration: none;
    position: relative;
    border: 1px solid var(--border-glass);
}

.premium-cert-card:hover {
    transform: translateX(8px);
    background: var(--bg-secondary);
    border-color: var(--accent-primary);
    box-shadow: 0 10px 20px rgba(0,0,0,0.05);
}

.cert-card-icon {
    width: 45px;
    height: 45px;
    background: var(--bg-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
    flex-shrink: 0;
    transition: all 0.3s ease;
}

.premium-cert-card:hover .cert-card-icon {
    background: var(--accent-primary);
    color: white;
    transform: scale(1.1);
}

.cert-card-content {
    flex: 1;
}

.cert-card-content h4 {
    font-size: 1rem;
    color: var(--text-primary);
    margin-bottom: 4px;
    line-height: 1.4;
}

.cert-card-content p {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.cert-card-link {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    opacity: 0.5;
    transition: all 0.3s ease;
}

.premium-cert-card:hover .cert-card-link {
    opacity: 1;
    color: var(--accent-primary);
    transform: scale(1.2);
}

@media (max-width: 900px) {
    .cert-course-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}