:root {
  --bg: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --primary: #3b82f6;
  --primary-dark: #1e40af;
  --secondary: #8b5cf6;
  --card-bg: #f8fafc;
  --card-border: #e2e8f0;
  --border-radius: 8px;
  --max-width: 1120px;
  --transition-speed: 0.3s;
}

body.dark {
  --bg: #0f172a;
  --text: #f8fafc;
  --muted: #94a3b8;
  --card-bg: #14213d;
  --card-border: #1e293b;
  --primary: #60a5fa;
  --primary-dark: #1d4ed8;
  --secondary: #a78bfa;

  background-image: linear-gradient(135deg, #0a1528, #1e304f);
}

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

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Helvetica, Arial, sans-serif;
  line-height: 1.6;
  color: var(--text);

  background-color: var(--bg);
  background-image: linear-gradient(135deg, rgba(240, 244, 255, 0.8), rgba(255, 234, 246, 0.8));
  background-attachment: fixed;
  transition: background-color var(--transition-speed) ease, color var(--transition-speed) ease;
}

#bg-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
  opacity: 0.4;
}

.hero {
  position: relative;
  overflow: hidden;
}

.hero::before,
.hero::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.6;
  z-index: -1;
}

.hero::before {
  width: 60vmin;
  height: 60vmin;
  background: radial-gradient(circle at top left, var(--primary), var(--secondary));
  top: -20vmin;
  left: -20vmin;
  animation: blobMove1 16s linear infinite;
}

.hero::after {
  width: 70vmin;
  height: 70vmin;
  background: radial-gradient(circle at bottom right, var(--secondary), var(--primary));
  bottom: -30vmin;
  right: -30vmin;
  animation: blobMove2 20s linear infinite;
}

@keyframes blobMove1 {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(20%, 10%) scale(1.2); }
  100% { transform: translate(0, 0) scale(1); }
}

@keyframes blobMove2 {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-15%, -20%) scale(1.1); }
  100% { transform: translate(0, 0) scale(1); }
}

.project-card {
  opacity: 0;
  transform: translateY(40px);
  transition: transform var(--transition-speed) ease, opacity var(--transition-speed) ease;
}

.project-card.visible {
  opacity: 1;
  transform: translateY(0);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color var(--transition-speed) ease;
}

a:hover {
  color: var(--primary-dark);
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1rem;
}

.navbar {
  position: sticky;
  top: 0;
  width: 100%;
  background-color: var(--bg);
  border-bottom: 1px solid var(--card-border);
  z-index: 999;
  transition: background-color var(--transition-speed) ease;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 0;
}

.logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary);
  white-space: nowrap;
}

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

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--muted);
  padding: 0.5rem;
  border-radius: 4px;
  transition: background-color var(--transition-speed) ease, color var(--transition-speed) ease;
}

.nav-link:hover,
.nav-link.active {
  background-color: var(--primary);
  color: #fff;
}

.theme-toggle {
  border: none;
  background: none;
  font-size: 1.25rem;
  cursor: pointer;
  color: var(--muted);
  transition: color var(--transition-speed) ease;
}

.theme-toggle:hover {
  color: var(--primary);
}

.section {
  padding: 4rem 0;
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 2rem;
  text-align: center;
}

.hero {
  min-height: 80vh;
  display: flex;
  align-items: center;
}

.hero-container {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.hero-text {
  flex: 1;
}

.hero h1 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}

.gradient-text {
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  color: transparent;
}

.subtitle {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--primary);
}

.description {
  font-size: 1rem;
  max-width: 45ch;
  margin-bottom: 1.5rem;
  color: var(--muted);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.btn {
  display: inline-block;
  padding: 0.65rem 1.2rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 4px;
  text-align: center;
  cursor: pointer;
  transition: background-color var(--transition-speed) ease, color var(--transition-speed) ease;
  user-select: none;
}

.btn.primary {
  background-color: var(--primary);
  color: #fff;
}

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

.btn.secondary {
  background-color: transparent;
  border: 1px solid var(--primary);
  color: var(--primary);
}

.btn.secondary:hover {
  background-color: var(--primary);
  color: #fff;
}

.hero-image {
  flex: 1;
  max-width: 300px;
  align-self: center;
}

.hero-image img {
  width: 100%;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--primary);
}

.about p {
  max-width: 60ch;
  margin: 0 auto 1.5rem;
  font-size: 1rem;
  color: var(--muted);
  line-height: 1.7;
}

.about-container {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 2rem;
}

.about-text {
  flex: 2 1 300px;
}

.about-image {
  flex: 1 1 260px;
  max-width: 320px;
  position: relative;
}

.about-image img {
  border-radius: var(--border-radius);
  width: 100%;
  object-fit: cover;
  box-shadow: 0 4px 16px rgba(0,0,0,0.1);
}

.skill-level {
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  transition: width 1s ease-in-out;
  will-change: width;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 2rem;
}

.project-card {
  background-color: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
  transition: transform var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 4px 16px rgba(0,0,0,0.1);
}

.project-card img {
  width: 100%;
  height: 160px;
  object-fit: cover;
}

.project-content {
  padding: 1rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.project-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
  color: var(--text);
}

.project-description {
  font-size: 0.875rem;
  flex: 1;
  color: var(--muted);
  margin-bottom: 0.5rem;
}

.project-tech {
  font-size: 0.75rem;
  color: var(--primary);
  font-weight: 600;
}

.projects-more {
  margin-top: 2rem;
  text-align: center;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1.5rem;
}

.skill-item {
  background-color: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--border-radius);
  padding: 1rem;
  text-align: center;
  box-shadow: 0 2px 6px rgba(0,0,0,0.05);
}

.skill-item h3 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
  color: var(--text);
}

.skill-bar {
  background-color: var(--card-border);
  border-radius: 4px;
  overflow: hidden;
  height: 8px;
  margin-bottom: 0.5rem;
}

.skill-level {
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  height: 100%;
}

.skill-level-text {
  font-size: 0.75rem;
  color: var(--muted);
}

.contact-intro {
  max-width: 60ch;
  margin: 0 auto 2rem;
  font-size: 1rem;
  color: var(--muted);
  text-align: center;
}

.contact-form {
  max-width: 640px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}

.form-group {
  display: flex;
  flex-direction: column;
}

.form-group.full {
  grid-column: 1 / -1;
}

.form-group label {
  font-size: 0.875rem;
  margin-bottom: 0.25rem;
  font-weight: 500;
}

.form-group input,
.form-group textarea {
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--card-border);
  border-radius: 4px;
  background-color: var(--card-bg);
  color: var(--text);
  font-size: 1rem;
  font-family: inherit;
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
}

.form-submit {
  align-self: center;
  margin-top: 0.5rem;
}

.form-response {
  margin-top: 1rem;
  text-align: center;
  font-weight: 500;
}

.footer {
  background-color: var(--card-bg);
  border-top: 1px solid var(--card-border);
  padding: 2rem 0;
  text-align: center;
}

.footer-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
}

.footer-name {
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  color: transparent;
}

.footer-tagline {
  font-size: 0.9rem;
  color: var(--muted);
  margin-bottom: 0.25rem;
}

.footer-location {
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 1rem;
}

.social-links {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 1rem;
}

.social-link {
  font-size: 1rem;
  color: var(--muted);
  transition: color var(--transition-speed) ease;
}

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

.copyright {
  font-size: 0.75rem;
  color: var(--muted);
}

.cursor-dot,
.cursor-ring {
  position: fixed;
  top: 0;
  left: 0;
  pointer-events: none;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  z-index: 10000;
  mix-blend-mode: difference;
}

.cursor-dot {
  width: 6px;
  height: 6px;
  background: var(--primary);
}

.cursor-ring {
  width: 30px;
  height: 30px;
  border: 2px solid var(--primary);
  opacity: 0.4;
  transition: transform 0.15s ease, opacity 0.15s ease;
  z-index: 9999;
}

@media (min-width: 768px) {
  .hero-container {
    flex-direction: row;
    align-items: center;
  }
  .hero-text {
    padding-right: 2rem;
  }
  .hero-image {
    max-width: 350px;
  }
}

@media (pointer: coarse) {
  .cursor-dot, .cursor-ring { display: none; }
}

.touch-dot {
  position: fixed;
  left: 0; top: 0;
  width: 10px; height: 10px;
  border-radius: 999px;
  background: rgba(99, 179, 237, 0.95); /* var(--primary) if you prefer */
  transform: translate(-50%, -50%) scale(1);
  pointer-events: none;
  z-index: 10000;
  mix-blend-mode: screen;
  transition: transform .12s ease;
}

.touch-ripple {
  position: fixed;
  left: 0; top: 0;
  width: 12px; height: 12px;
  border-radius: 999px;
  pointer-events: none;
  z-index: 9999;
  background: radial-gradient(
    circle,
    rgba(167, 139, 250, 0.35) 0%,
    rgba(167, 139, 250, 0.15) 50%,
    rgba(167, 139, 250, 0.00) 70%
  );
  transform: translate(-50%, -50%) scale(1);
  animation: ripple-pop .6s ease-out forwards;
}

@keyframes ripple-pop {
  to {
    transform: translate(-50%, -50%) scale(8);
    opacity: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .touch-dot, .touch-ripple { animation: none; transition: none; }
}
.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 0;
  position: relative; 
}

.menu-toggle {
  display: none;
  border: none;
  background: none;
  font-size: 1.75rem;
  line-height: 1;
  color: var(--muted);
  cursor: pointer;
  padding: 0.25rem 0.5rem;
}

@media (max-width: 767px) {
  .nav-links {
    display: none;
    flex-direction: column;
    gap: 0;
    width: 100%;
    position: absolute;
    top: 100%;
    left: 0;
    background-color: var(--bg);
    border-bottom: 1px solid var(--card-border);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    z-index: 998;
  }
  .nav-links.open {
    display: flex;
  }
  .nav-links .nav-link {
    padding: 0.75rem 1rem;
    width: 100%;
    text-align: left;
  }
  .nav-links .nav-link:hover,
  .nav-links .nav-link.active {
    background-color: var(--primary);
    color: #fff;
  }
  .menu-toggle {
    display: block;
  }
  .theme-toggle {
    margin-left: 0.5rem;
  }

  .section {
    padding: 2.5rem 0;
  }

  .hero-image {
    max-width: 220px;
  }

  .hero-text {
    text-align: center;
  }
  .hero-actions {
    justify-content: center;
  }
}