/* ========================================
   CSS Variables & Reset
======================================== */
:root {
  --primary-color: #3b82f6;
  --primary-dark: #2563eb;
  --secondary-color: #8b5cf6;
  --accent-color: #06b6d4;
  --bg-dark: #0a0f1a;
  --bg-card: #111827;
  --bg-card-hover: #1a2332;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border-color: #1e3a5f;
  --gradient: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
  --accent-gradient: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);
  --shadow: 0 10px 40px rgba(59, 130, 246, 0.15);
  --glow: 0 0 30px rgba(59, 130, 246, 0.3);
  --transition: all 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Inter", sans-serif;
  background-color: var(--bg-dark);
  background-image:
    radial-gradient(ellipse at top, #1a1f35 0%, var(--bg-dark) 70%),
    radial-gradient(
      circle at 20% 80%,
      rgba(59, 130, 246, 0.05) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 80% 20%,
      rgba(139, 92, 246, 0.05) 0%,
      transparent 50%
    );
  background-attachment: fixed;
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

/* Dot pattern overlay */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: radial-gradient(
    rgba(255, 255, 255, 0.03) 1px,
    transparent 1px
  );
  background-size: 30px 30px;
  pointer-events: none;
  z-index: 0;
}

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  position: relative;
  z-index: 1;
}

/* ========================================
   Navigation
======================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 15, 26, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(30, 58, 95, 0.5);
  transition: var(--transition);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 15px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text-primary);
}

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

.nav-menu {
  display: flex;
  gap: 30px;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition);
  position: relative;
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-gradient);
  transition: var(--transition);
}

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

.nav-link:hover,
.nav-link.active {
  color: var(--accent-color);
}

.nav-resume-btn {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--accent-color);
  transition: var(--transition);
  position: relative;
}

.nav-resume-btn::after {
  content: "";
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-gradient);
  transition: var(--transition);
}

.nav-resume-btn:hover::after {
  width: 100%;
}

.nav-resume-btn:hover {
  color: var(--text-primary);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
}

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

.hamburger:focus-visible {
  outline: 2px solid var(--accent-color);
  outline-offset: 4px;
  border-radius: 4px;
}

/* ========================================
   Hero Section
======================================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 100px 20px 60px;
  position: relative;
  background: linear-gradient(
    180deg,
    var(--bg-dark) 0%,
    rgba(59, 130, 246, 0.05) 50%,
    rgba(139, 92, 246, 0.05) 100%
  );
  overflow: hidden;
}

/* Animated background orbs */
.hero::before,
.hero::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
  animation: float-orb 8s ease-in-out infinite;
}

.hero::before {
  width: 400px;
  height: 400px;
  background: radial-gradient(
    circle,
    rgba(59, 130, 246, 0.3) 0%,
    transparent 70%
  );
  top: 10%;
  left: -10%;
  animation-delay: 0s;
}

.hero::after {
  width: 350px;
  height: 350px;
  background: radial-gradient(
    circle,
    rgba(139, 92, 246, 0.3) 0%,
    transparent 70%
  );
  bottom: 10%;
  right: -5%;
  animation-delay: -4s;
}

@keyframes float-orb {
  0%,
  100% {
    transform: translate(0, 0) scale(1);
  }
  50% {
    transform: translate(30px, -30px) scale(1.1);
  }
}

.hero-content {
  max-width: 1200px;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-text {
  animation: fadeInUp 1s ease;
}

.hero-greeting {
  font-size: 1.1rem;
  color: var(--accent-color);
  margin-bottom: 10px;
  font-weight: 500;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.hero-name {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 10px;
  background: linear-gradient(135deg, #3b82f6 0%, #06b6d4 50%, #8b5cf6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

.hero-description {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 30px;
  max-width: 500px;
}

.hero-buttons {
  display: flex;
  gap: 15px;
  margin-bottom: 30px;
}

.btn {
  padding: 14px 32px;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: none;
}

.btn-primary {
  background: var(--gradient);
  color: white;
  box-shadow: 0 4px 20px rgba(59, 130, 246, 0.4);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(59, 130, 246, 0.5);
}

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

.btn-secondary:hover {
  border-color: var(--accent-color);
  background: rgba(6, 182, 212, 0.1);
  color: var(--accent-color);
}

.hero-socials {
  display: flex;
  gap: 15px;
}

.social-link {
  width: 45px;
  height: 45px;
  border-radius: 50%;
  background: var(--bg-card);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: var(--text-secondary);
  transition: var(--transition);
  border: 1px solid var(--border-color);
}

.social-link:hover {
  background: var(--accent-color);
  color: white;
  transform: translateY(-3px);
  border-color: var(--accent-color);
  box-shadow: 0 0 20px rgba(6, 182, 212, 0.4);
}

.hero-image {
  display: flex;
  justify-content: center;
  animation: fadeInUp 1s ease 0.2s backwards;
}

.hero-img-container {
  position: relative;
}

.hero-img {
  width: 350px;
  height: 350px;
  border-radius: 50%;
  object-fit: cover;
  object-position: center top;
  position: relative;
  animation: float 6s ease-in-out infinite;
  border: 4px solid var(--primary-color);
  box-shadow:
    0 0 40px rgba(59, 130, 246, 0.4),
    0 0 80px rgba(59, 130, 246, 0.2);
}

.hero-img::before {
  content: "";
  position: absolute;
  inset: -10px;
  border-radius: 50%;
  border: 3px solid var(--primary-color);
  animation: rotate 10s linear infinite;
}

.scroll-indicator {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
}

.scroll-indicator a {
  display: block;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--bg-card);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-color);
  animation: bounce 2s infinite;
}

/* ========================================
   Section Styles
======================================== */
section {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 10px;
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: "";
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: var(--gradient);
  border-radius: 2px;
}

.section-subtitle {
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin-top: 20px;
}

/* ========================================
   About Section
======================================== */
.about {
  background: linear-gradient(
    180deg,
    var(--bg-dark) 0%,
    rgba(99, 102, 241, 0.05) 100%
  );
}

.about-content {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 60px;
  align-items: start;
}

.about-text h3 {
  font-size: 1.8rem;
  margin-bottom: 20px;
  color: var(--text-primary);
}

.about-text p {
  color: var(--text-secondary);
  margin-bottom: 20px;
  font-size: 1.05rem;
}

.about-stats {
  display: flex;
  gap: 40px;
  margin-top: 40px;
  padding-top: 30px;
  border-top: 1px solid var(--border-color);
}

.stat-item {
  text-align: center;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 700;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  display: block;
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 5px;
}

.about-info {
  display: grid;
  gap: 20px;
}

.info-card {
  background: var(--bg-card);
  padding: 20px 25px;
  border-radius: 15px;
  display: flex;
  align-items: center;
  gap: 20px;
  transition: var(--transition);
  border: 1px solid var(--border-color);
}

.info-card:hover {
  transform: translateX(10px);
  border-color: var(--primary-color);
}

.info-card i {
  font-size: 1.8rem;
  color: var(--primary-color);
}

.info-card h4 {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 3px;
}

.info-card p {
  font-size: 1.05rem;
  font-weight: 500;
}

/* ========================================
   Skills Section
======================================== */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.skill-category {
  background: var(--bg-card);
  border-radius: 20px;
  padding: 30px;
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.skill-category:hover {
  transform: translateY(-5px);
  border-color: var(--accent-color);
  box-shadow: var(--shadow);
}

.skill-category-header {
  display: flex;
  align-items: center;
  gap: 15px;
  margin-bottom: 25px;
  padding-bottom: 15px;
  border-bottom: 1px solid var(--border-color);
}

.skill-category-header i {
  font-size: 2rem;
  color: var(--accent-color);
}

.skill-category-header h3 {
  font-size: 1.3rem;
  font-weight: 600;
}

.skill-items {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 15px;
}

.skill-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 15px;
  background: var(--bg-dark);
  border-radius: 10px;
  transition: var(--transition);
  cursor: default;
}

.skill-item:hover {
  background: var(--bg-card-hover);
  transform: scale(1.05);
}

.skill-item i {
  font-size: 1.3rem;
  color: var(--primary-color);
}

.skill-item span {
  font-size: 0.9rem;
  font-weight: 500;
}

/* ========================================
   Projects Section
======================================== */
.projects {
  background: linear-gradient(
    180deg,
    var(--bg-dark) 0%,
    rgba(59, 130, 246, 0.03) 50%,
    rgba(139, 92, 246, 0.03) 100%
  );
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}

.project-card {
  background: var(--bg-card);
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

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

.project-image {
  height: 200px;
  background: linear-gradient(
    135deg,
    rgba(59, 130, 246, 0.15) 0%,
    rgba(139, 92, 246, 0.15) 100%
  );
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.project-image i {
  font-size: 4rem;
  color: var(--primary-color);
  filter: drop-shadow(0 0 10px rgba(59, 130, 246, 0.5));
}

.project-image > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.project-image-grid {
  display: grid !important;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: 1fr;
  gap: 3px;
  height: 200px;
  background: var(--bg-card-hover);
}

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

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

.project-content {
  padding: 25px;
}

.project-content h3 {
  font-size: 1.3rem;
  margin-bottom: 10px;
}

.project-content p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 15px;
}

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

.project-tags span {
  padding: 6px 14px;
  background: linear-gradient(
    135deg,
    rgba(59, 130, 246, 0.3) 0%,
    rgba(139, 92, 246, 0.3) 100%
  );
  color: #fff;
  border: 1px solid rgba(59, 130, 246, 0.5);
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
  transition: var(--transition);
}

.project-tags span:hover {
  background: linear-gradient(
    135deg,
    rgba(59, 130, 246, 0.5) 0%,
    rgba(139, 92, 246, 0.5) 100%
  );
  border-color: var(--primary-color);
  transform: translateY(-2px);
}

.project-links {
  display: flex;
  gap: 15px;
}

.project-link {
  display: flex;
  align-items: center;
  gap: 5px;
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition);
}

.project-link:hover {
  color: var(--primary-color);
}

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

.timeline::before {
  content: "";
  position: absolute;
  left: 20px;
  width: 2px;
  height: 100%;
  background: var(--border-color);
}

.timeline-item {
  position: relative;
  margin-bottom: 50px;
  margin-left: 50px;
  padding-left: 40px;
}

.timeline-dot {
  position: absolute;
  width: 20px;
  height: 20px;
  background: var(--accent-gradient);
  border-radius: 50%;
  top: 0;
  left: 10px;
}

.timeline-content {
  background: var(--bg-card);
  padding: 25px;
  border-radius: 15px;
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.timeline-content:hover {
  border-color: var(--accent-color);
  transform: scale(1.02);
}

.timeline-date {
  display: inline-block;
  padding: 5px 15px;
  background: rgba(6, 182, 212, 0.2);
  color: var(--accent-color);
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 15px;
}

.timeline-content h3 {
  font-size: 1.3rem;
  margin-bottom: 5px;
}

.timeline-content h4 {
  color: var(--accent-color);
  font-size: 1rem;
  margin-bottom: 10px;
  font-weight: 500;
}

.timeline-content p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* ========================================
   Mobile Responsive - Experience Section
======================================== */
@media (max-width: 768px) {
  .timeline {
    margin-left: 0;
    padding-left: 0;
  }

  .timeline::before {
    left: 0;
  }

  .timeline-item {
    margin-left: 0;
    padding-left: 35px;
    margin-bottom: 30px;
  }

  .timeline-dot {
    left: -5px;
    width: 16px;
    height: 16px;
  }

  .timeline-content {
    padding: 20px;
  }

  .timeline-content h3 {
    font-size: 1.1rem;
  }

  .timeline-content h4 {
    font-size: 0.9rem;
  }

  .timeline-content p {
    font-size: 0.85rem;
  }

  .timeline-date {
    font-size: 0.75rem;
    padding: 4px 12px;
    margin-bottom: 10px;
  }
}

@media (max-width: 480px) {
  .timeline-item {
    padding-left: 30px;
    margin-bottom: 25px;
  }

  .timeline-dot {
    left: -8px;
    width: 14px;
    height: 14px;
  }

  .timeline-content {
    padding: 15px;
  }

  .timeline-content h3 {
    font-size: 1rem;
  }

  .timeline-content h4 {
    font-size: 0.85rem;
  }

  .timeline-content p {
    font-size: 0.8rem;
    line-height: 1.5;
  }

  .timeline-date {
    font-size: 0.7rem;
    padding: 3px 10px;
    margin-bottom: 8px;
  }
}

/* ========================================
   Education Section
======================================== */
.education-grid {
  display: grid;
  gap: 30px;
  max-width: 800px;
  margin: 0 auto;
}

.education-card {
  background: var(--bg-card);
  padding: 30px;
  border-radius: 20px;
  display: flex;
  gap: 30px;
  align-items: center;
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.education-card:hover {
  border-color: var(--accent-color);
  transform: translateX(10px);
}

.education-icon {
  width: 80px;
  height: 80px;
  background: var(--accent-gradient);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.education-icon i {
  font-size: 2.5rem;
  color: white;
}

.education-year {
  display: inline-block;
  padding: 5px 15px;
  background: rgba(6, 182, 212, 0.2);
  color: var(--accent-color);
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 10px;
}

.education-content h3 {
  font-size: 1.3rem;
  margin-bottom: 5px;
}

.education-content h4 {
  color: var(--accent-color);
  font-size: 1rem;
  margin-bottom: 10px;
  font-weight: 500;
}

.education-content p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* ========================================
   Contact Section
======================================== */
.contact {
  background: linear-gradient(
    180deg,
    var(--bg-dark) 0%,
    rgba(6, 182, 212, 0.05) 50%,
    rgba(59, 130, 246, 0.05) 100%
  );
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 60px;
}

.contact-info h3 {
  font-size: 1.8rem;
  margin-bottom: 15px;
}

.contact-info > p {
  color: var(--text-secondary);
  margin-bottom: 30px;
  font-size: 1.05rem;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 30px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 20px;
}

.contact-item i {
  width: 50px;
  height: 50px;
  background: var(--bg-card);
  border-radius: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: var(--accent-color);
  border: 1px solid var(--border-color);
}

.contact-item h4 {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 3px;
}

.contact-item a,
.contact-item p {
  font-size: 1.05rem;
  font-weight: 500;
  transition: var(--transition);
}

.contact-item a:hover {
  color: var(--accent-color);
}

.contact-socials {
  display: flex;
  gap: 15px;
}

.contact-form {
  background: var(--bg-card);
  padding: 40px;
  border-radius: 20px;
  border: 1px solid var(--border-color);
}

.form-group {
  position: relative;
  margin-bottom: 25px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 15px 20px;
  background: var(--bg-dark);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  color: var(--text-primary);
  font-family: "Inter", sans-serif;
  font-size: 1rem;
  transition: var(--transition);
  outline: none;
}

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

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent-color);
}

.form-group label {
  position: absolute;
  left: 20px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
  transition: var(--transition);
}

.form-group textarea ~ label {
  top: 20px;
  transform: translateY(0);
}

.form-group input:focus ~ label,
.form-group input:valid ~ label,
.form-group textarea:focus ~ label,
.form-group textarea:valid ~ label {
  top: -10px;
  left: 15px;
  font-size: 0.8rem;
  background: var(--bg-card);
  padding: 0 8px;
  color: var(--accent-color);
}

/* Form Error States */
.form-group.error input,
.form-group.error textarea {
  border-color: #ef4444;
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15);
}

.form-group.error input:focus,
.form-group.error textarea:focus {
  border-color: #ef4444;
}

.form-group.error label {
  color: #ef4444 !important;
}

.error-message {
  display: block;
  color: #ef4444;
  font-size: 0.8rem;
  margin-top: 8px;
  padding-left: 5px;
  animation: fadeInUp 0.3s ease;
}

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

/* ========================================
   Footer
======================================== */
.footer {
  background: var(--bg-card);
  padding: 40px 0;
  border-top: 1px solid var(--border-color);
}

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

.footer-logo a {
  font-size: 1.5rem;
  font-weight: 700;
}

.footer-logo span {
  color: var(--accent-color);
}

.footer p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-socials {
  display: flex;
  gap: 15px;
}

.footer-socials a {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--bg-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: var(--transition);
}

.footer-socials a:hover {
  background: var(--accent-color);
  color: white;
}

/* ========================================
   Animations
======================================== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-20px);
  }
}

@keyframes bounce {
  0%,
  20%,
  50%,
  80%,
  100% {
    transform: translateY(0);
  }
  40% {
    transform: translateY(-10px);
  }
  60% {
    transform: translateY(-5px);
  }
}

@keyframes rotate {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

/* ========================================
   Responsive Design
======================================== */
@media (max-width: 992px) {
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-text {
    order: 2;
  }

  .hero-image {
    order: 1;
  }

  .hero-description {
    margin: 0 auto 30px;
  }

  .hero-buttons {
    justify-content: center;
  }

  .hero-socials {
    justify-content: center;
  }

  .hero-img {
    width: 280px;
    height: 280px;
  }

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

  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--bg-dark);
    flex-direction: column;
    padding: 30px;
    gap: 20px;
    transform: translateY(-150%);
    transition: var(--transition);
    border-bottom: 1px solid var(--border-color);
  }

  .nav-menu.active {
    transform: translateY(0);
  }

  .hamburger {
    display: flex;
  }

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

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

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

  .hero-name {
    font-size: 2.5rem;
  }

  .hero-title {
    font-size: 1.3rem;
  }

  .about-stats {
    flex-direction: column;
    gap: 20px;
  }

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

  .timeline::before {
    left: 0;
  }

  .timeline-item {
    width: 100%;
    padding-left: 30px !important;
    padding-right: 0 !important;
    text-align: left !important;
  }

  .timeline-item:nth-child(even) {
    margin-left: 0;
  }

  .timeline-dot {
    left: -10px !important;
    right: auto !important;
  }

  .education-card {
    flex-direction: column;
    text-align: center;
  }

  .footer-content {
    flex-direction: column;
    gap: 20px;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero-name {
    font-size: 2rem;
  }

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

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

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

  .skill-items {
    grid-template-columns: 1fr;
  }

  .contact-form {
    padding: 25px;
  }
}

/* ========================================
   Resume Modal
======================================== */
.resume-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 9999;
  justify-content: center;
  align-items: center;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.resume-modal.active {
  display: flex;
  opacity: 1;
}

.resume-modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(5px);
}

.resume-modal-content {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 40px;
  max-width: 420px;
  width: 90%;
  text-align: center;
  transform: scale(0.9);
  transition: transform 0.3s ease;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.5);
}

.resume-modal.active .resume-modal-content {
  transform: scale(1);
}

.resume-modal-close {
  position: absolute;
  top: 15px;
  right: 15px;
  background: var(--bg-dark);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  width: 35px;
  height: 35px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.resume-modal-close:hover {
  background: var(--accent-color);
  color: white;
  border-color: var(--accent-color);
}

.resume-modal-icon {
  width: 80px;
  height: 80px;
  background: var(--accent-gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}

.resume-modal-icon i {
  font-size: 2.5rem;
  color: white;
}

.resume-modal-content h3 {
  font-size: 1.5rem;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.resume-modal-content p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 25px;
}

.resume-modal-buttons {
  display: flex;
  gap: 15px;
  justify-content: center;
}

.resume-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition);
  text-decoration: none;
}

.resume-btn-view {
  background: var(--gradient);
  color: white;
}

.resume-btn-view:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(6, 182, 212, 0.4);
  color: white;
}

.resume-btn-download {
  background: var(--bg-dark);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.resume-btn-download:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-color);
  color: var(--accent-color);
}

@media (max-width: 480px) {
  .resume-modal-buttons {
    flex-direction: column;
  }

  .resume-btn {
    justify-content: center;
  }
}

/* ========================================
   Page Loader
======================================== */
.page-loader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg-dark);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 99999;
  transition:
    opacity 0.5s ease,
    visibility 0.5s ease;
}

.page-loader.hidden {
  opacity: 0;
  visibility: hidden;
}

.loader-content {
  text-align: center;
}

.loader-spinner {
  width: 50px;
  height: 50px;
  border: 3px solid var(--border-color);
  border-top-color: var(--accent-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto 15px;
}

.loader-content p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  letter-spacing: 2px;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ========================================
   Back to Top Button
======================================== */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 45px;
  height: 45px;
  background: var(--gradient);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all 0.3s ease;
  z-index: 1000;
  box-shadow: 0 5px 20px rgba(99, 102, 241, 0.4);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(99, 102, 241, 0.5);
}

.back-to-top i {
  color: white;
  font-size: 1.1rem;
}

@media (max-width: 768px) {
  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
  }
}

/* ========================================
   Certifications Section
======================================== */
.certifications {
  padding: 100px 0;
  background: linear-gradient(
    180deg,
    var(--bg-dark) 0%,
    rgba(59, 130, 246, 0.03) 50%,
    rgba(139, 92, 246, 0.03) 100%
  );
}

.certifications .section-header {
  text-align: center;
  margin-bottom: 60px;
}

.certifications .section-subtitle {
  color: var(--accent-color);
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 3px;
  margin-bottom: 10px;
}

.certifications .section-title {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 15px;
}

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

.certifications-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 30px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.certification-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 30px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.certification-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--accent-gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.certification-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent-color);
  box-shadow: 0 20px 40px rgba(6, 182, 212, 0.15);
}

.certification-card:hover::before {
  transform: scaleX(1);
}

.certification-icon {
  width: 60px;
  height: 60px;
  background: var(--accent-gradient);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  transition:
    transform 0.3s ease,
    box-shadow 0.3s ease;
}

.certification-icon:hover {
  transform: translateY(-5px) scale(1.05);
  box-shadow: 0 10px 30px rgba(6, 182, 212, 0.4);
}

.certification-icon i {
  font-size: 1.5rem;
  color: white;
}

.certification-icon.forage-logo {
  background: transparent;
  padding: 10px;
  border: 2px solid rgba(6, 182, 212, 0.3);
  transition:
    border-color 0.3s ease,
    box-shadow 0.3s ease;
}

.certification-icon.forage-logo:hover {
  border-color: var(--accent-color);
  box-shadow: 0 0 20px rgba(6, 182, 212, 0.3);
}

.certification-icon.coursera-logo {
  background: #ffffff;
  padding: 10px;
  border: 2px solid rgba(6, 182, 212, 0.3);
  transition:
    border-color 0.3s ease,
    box-shadow 0.3s ease;
}

.certification-icon.coursera-logo:hover {
  border-color: var(--accent-color);
  box-shadow: 0 0 20px rgba(6, 182, 212, 0.3);
}

.certification-icon.forage-logo img,
.certification-icon.coursera-logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 8px;
  transition:
    transform 0.3s ease,
    filter 0.3s ease;
}

.certification-icon.forage-logo:hover img,
.certification-icon.coursera-logo:hover img {
  transform: scale(1.1);
  filter: brightness(1.1) drop-shadow(0 0 10px rgba(6, 182, 212, 0.5));
}

@keyframes float-subtle {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-5px);
  }
}

@keyframes pulse-glow {
  0%,
  100% {
    box-shadow: 0 0 20px rgba(6, 182, 212, 0.3);
  }
  50% {
    box-shadow: 0 0 30px rgba(6, 182, 212, 0.6);
  }
}

.certification-card:hover .certification-icon {
  animation:
    float-subtle 2s ease-in-out infinite,
    pulse-glow 2s ease-in-out infinite;
}

.certification-card:hover .certification-icon i {
  animation: float-subtle 2s ease-in-out infinite;
}

.certification-card h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.certification-issuer {
  color: var(--accent-color);
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 5px;
}

.certification-date {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-bottom: 15px;
}

.certification-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
}

.certification-credential {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 15px;
  padding: 10px 18px;
  background: linear-gradient(
    135deg,
    rgba(6, 182, 212, 0.15) 0%,
    rgba(59, 130, 246, 0.15) 100%
  );
  border: 1px solid rgba(6, 182, 212, 0.3);
  border-radius: 25px;
  color: var(--accent-color);
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.certification-credential::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.3),
    transparent
  );
  transition: left 0.5s ease;
}

.certification-credential:hover::before {
  left: 100%;
}

.certification-credential:hover {
  background: linear-gradient(
    135deg,
    var(--accent-color) 0%,
    var(--primary-color) 100%
  );
  border-color: transparent;
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 5px 20px rgba(6, 182, 212, 0.4);
}

.certification-credential i {
  transition: transform 0.3s ease;
}

.certification-credential:hover i {
  transform: scale(1.2);
  animation: bounce-scale 0.5s ease;
}

@keyframes bounce-scale {
  0%,
  100% {
    transform: scale(1.2);
  }
  50% {
    transform: scale(1.4);
  }
}

@media (max-width: 768px) {
  .certifications {
    padding: 80px 0;
  }

  .certifications .section-title {
    font-size: 2rem;
  }

  .certifications-grid {
    grid-template-columns: 1fr;
    padding: 0 15px;
  }

  .certification-card {
    padding: 25px;
  }
}

@media (max-width: 480px) {
  .certifications .section-title {
    font-size: 1.75rem;
  }

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

  .certification-icon i {
    font-size: 1.25rem;
  }
}