:root {
  --bg-color: #121212;
  --text-main: #f4f4f5;
  --text-muted: #a1a1aa;
  --navbar-bg: #18181b;
  --navbar-text: #f4f4f5;
  --primary-btn: #3b82f6;
  --primary-hover: #2563eb;
  --card-bg: #18181b;
  --border-color: #27272a;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-pill: 50px;
  --transition: 0.2s ease-in-out;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 100px;
}

body {
  font-family: system-ui, -apple-system, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-main);
  line-height: 1.7;
}

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

.navbar-wrapper {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  display: flex;
  justify-content: center;
  z-index: 1000;
  padding: 0 1.5rem;

  background-color: rgba(24, 24, 27, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
}

.navbar {
  color: var(--navbar-text);
  width: 100%;
  max-width: 1000px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
  
  background-color: transparent; 
  border-radius: 0;
  border: none;
}

.logo {
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: 0.5px;
  color: var(--navbar-text);
  transition: color var(--transition);
}

.logo:hover {
  color: var(--primary-btn);
}

.nav-links {
  display: none;
  gap: 2rem;
}

.nav-links a {
  font-size: 0.9rem;
  transition: color var(--transition);
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

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

.mobile-menu {
  position: fixed;
  top: 80px;
  left: 5%;
  width: 90%;
  background: var(--card-bg);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  padding: 1rem;
  gap: 0.5rem;
  z-index: 999;
  transform: translateY(-10px);
  opacity: 0;
  pointer-events: none;
  transition: all var(--transition);
}

.mobile-menu.active {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.mobile-menu a {
  color: var(--text-main);
  padding: 0.75rem;
  text-align: center;
  border-radius: var(--radius-sm);
}

.mobile-menu a:hover {
  background-color: var(--bg-color);
}

.btn-primary {
  background: var(--primary-btn);
  color: #ffffff !important;
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-pill);
  font-size: 0.9rem;
  border: none;
  cursor: pointer;
  transition: background var(--transition);
}

.btn-primary:hover {
  background: var(--primary-hover);
}

.btn-outline {
  background: transparent;
  color: var(--text-main);
  border: 1px solid var(--border-color);
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-pill);
  font-size: 0.9rem;
  transition: all var(--transition);
}

.btn-outline:hover {
  border-color: var(--text-main);
}

.main-content {
  max-width: 1000px;
  margin: 0 auto;
  padding: 8rem 1.5rem 4rem;
}

.hero-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
  margin-bottom: 6rem;
  text-align: center;
}

.hero-image-container {
  width: 220px;
  height: 220px;
  border-radius: 50%;
  overflow: hidden;
  border: 2px solid var(--border-color);
}

.hero-image-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.greeting {
  font-size: 1rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

#hero-name {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 0.5rem;
}

#hero-role {
  font-size: clamp(1rem, 2vw, 1.2rem);
  font-weight: 400;
  color: var(--primary-btn);
  margin-bottom: 2rem;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin-bottom: 2rem;
}

.social-icons {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  flex-wrap: wrap;
}

.social-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: color var(--transition);
}

.social-link:hover {
  color: var(--text-main);
}

.section-block {
  margin-bottom: 5rem;
}

.section-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  color: var(--text-main);
}

.section-text {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 700px;
}

.skills-grid, .projects-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.skill-category, .project-card {
  background: var(--card-bg);
  padding: 1.5rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.skill-category:hover, .project-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary-btn);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.skill-category h3 {
  font-size: 1.15rem;
  margin-bottom: 1rem;
  color: var(--text-main);
  font-weight: 600;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-color);
}

.skill-category ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 0.5rem;
}

.skill-category li {
  background: rgba(59, 130, 246, 0.1);
  color: var(--primary-btn);
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  font-weight: 500;
  border: 1px solid rgba(59, 130, 246, 0.2);
  transition: all var(--transition);
  cursor: default;
}

.skill-category li::before {
  content: '';
  width: 6px;
  height: 6px;
  background-color: var(--primary-btn);
  border-radius: 50%;
  transition: transform var(--transition), background-color var(--transition);
}

.skill-category li:hover::before {
  transform: scale(1.5);
  background-color: var(--primary-hover);
}

.project-card img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  border-radius: var(--radius-sm);
  margin-bottom: 1.25rem;
}

.project-card h3 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.project-card p {
  font-size: 0.95rem;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1rem 0;
}

.tag {
  background: var(--bg-color);
  font-size: 0.75rem;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-pill);
  color: var(--text-muted);
  border: 1px solid var(--border-color);
}

.gallery-title {
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--text-main);
  margin: 2rem 0 1rem 0;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
}

.gallery-item {
  position: relative;
  aspect-ratio: 1 / 1;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--border-color);
}
.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition);
}
.gallery-item:hover img {
  transform: scale(1.05);
}
.timeline {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.timeline-item {
  padding-left: 1.5rem;
  border-left: 2px solid var(--border-color);
}
.timeline-item h4 {
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--text-main);
}
.timeline-item span {
  font-size: 0.85rem;
  color: var(--text-muted);
  display: block;
  margin-bottom: 0.5rem;
}
.timeline-item p {
  font-size: 0.95rem;
}
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 600px;
}
.form-row {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.input-group {
  width: 100%;
}
.contact-form input, .contact-form textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-color);
  color: var(--text-main);
  border-radius: var(--radius-sm);
  background: var(--card-bg);
  font-family: inherit;
  font-size: 0.95rem;
  outline: none;
  transition: border-color var(--transition);
}
.contact-form input::placeholder, .contact-form textarea::placeholder {
  color: var(--text-muted);
}
.contact-form input:focus, .contact-form textarea:focus {
  border-color: var(--primary-btn);
}
.form-submit {
  align-self: flex-start;
}
footer {
  text-align: center;
  padding: 2rem;
  color: var(--text-muted);
  font-size: 0.85rem;
  border-top: 1px solid var(--border-color);
  margin-top: 2rem;
}
@media (min-width: 768px) {
  .hamburger {
    display: none;
  }
  .nav-links {
    display: flex;
  }
  .mobile-menu {
    display: none !important;
  }
  .hero-section {
    flex-direction: row;
    justify-content: flex-start;
    gap: 4rem;
    text-align: left;
  }
  .hero-image-container {
    width: 250px;
    height: 250px;
    flex-shrink: 0;
  }
  .hero-buttons {
    justify-content: flex-start;
  }
  .social-icons {
    justify-content: flex-start;
  }
  .skills-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .gallery-grid {
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  }
  .form-row {
    flex-direction: row;
  }
}