/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:        #0d1117;
  --bg2:       #161b22;
  --border:    #30363d;
  --text:      #e6edf3;
  --text-muted:#8b949e;
  --cyan:      #00f5ff;
  --purple:    #a855f7;
  --green:     #3fb950;
  --orange:    #f0883e;
  --yellow:    #d29922;
  --red:       #f85149;
  --glow-cyan: 0 0 12px #00f5ff88, 0 0 30px #00f5ff33;
  --glow-purple:0 0 12px #a855f788, 0 0 30px #a855f733;
  --radius:    8px;
  --transition: 0.25s ease;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
}

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

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--cyan); }

/* ===== NAVBAR ===== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  height: 60px;
  background: rgba(13, 17, 23, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: border-color var(--transition);
}

.navbar.scrolled { border-color: var(--cyan); }

.nav-logo {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
}

.logo-bracket { color: var(--cyan); }

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

.nav-links a {
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: color var(--transition);
  font-family: 'JetBrains Mono', monospace;
}

.nav-links a:hover,
.nav-links a.active { color: var(--cyan); }

.nav-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Lang toggle */
.lang-toggle {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.3rem 0.6rem;
  border-radius: 4px;
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition), box-shadow var(--transition);
  letter-spacing: 0.05em;
}
.lang-toggle:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  box-shadow: var(--glow-cyan);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 22px; height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

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

#particleCanvas {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 2rem;
}

.hero-greeting {
  font-family: 'JetBrains Mono', monospace;
  color: var(--text-muted);
  font-size: 1rem;
  margin-bottom: 0.75rem;
  opacity: 0;
  animation: fadeUp 0.6s ease 0.2s forwards;
}

.hero-name {
  font-size: clamp(3.5rem, 10vw, 7rem);
  font-weight: 700;
  background: linear-gradient(135deg, var(--cyan) 0%, var(--purple) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 1rem;
  opacity: 0;
  animation: fadeUp 0.6s ease 0.4s forwards;
}

.hero-subtitle {
  font-family: 'JetBrains Mono', monospace;
  font-size: clamp(1rem, 2.5vw, 1.3rem);
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  height: 2rem;
  opacity: 0;
  animation: fadeUp 0.6s ease 0.6s forwards;
}

.typing-prefix { color: var(--purple); }
.typing-text { color: var(--cyan); }
.cursor {
  display: inline-block;
  color: var(--cyan);
  animation: blink 0.8s step-end infinite;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeUp 0.6s ease 0.8s forwards;
}

.btn {
  padding: 0.7rem 1.8rem;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  font-family: 'JetBrains Mono', monospace;
}

.btn-primary {
  background: linear-gradient(135deg, var(--cyan), var(--purple));
  color: var(--bg);
  box-shadow: var(--glow-cyan);
}
.btn-primary:hover { opacity: 0.85; transform: translateY(-2px); }

.btn-outline {
  background: transparent;
  color: var(--cyan);
  border: 1px solid var(--cyan);
}
.btn-outline:hover {
  background: var(--cyan);
  color: var(--bg);
  box-shadow: var(--glow-cyan);
  transform: translateY(-2px);
}

.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  color: var(--text-muted);
  font-size: 1.1rem;
  animation: bounce 2s infinite;
}

/* ===== SECTIONS ===== */
.section { padding: 6rem 1.5rem; }
.section-dark { background: var(--bg2); }
.container { max-width: 960px; margin: 0 auto; }

.section-title {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 3rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.section-title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
  max-width: 300px;
}

.title-number {
  font-family: 'JetBrains Mono', monospace;
  color: var(--cyan);
  font-size: 1rem;
}

/* ===== ABOUT ===== */
.about-grid {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 3rem;
  align-items: start;
}

.avatar-wrapper {
  position: relative;
  width: 120px; height: 120px;
  flex-shrink: 0;
}

.avatar {
  width: 120px; height: 120px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--cyan), var(--purple));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  font-weight: 700;
  color: var(--bg);
  position: relative;
  z-index: 1;
}

.avatar-ring {
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 2px solid transparent;
  background: linear-gradient(var(--bg), var(--bg)) padding-box,
              linear-gradient(135deg, var(--cyan), var(--purple)) border-box;
  animation: spin 6s linear infinite;
}

.about-text p { color: var(--text-muted); margin-bottom: 1rem; }
.about-text p strong.neon-text { color: var(--cyan); }

.about-stats {
  display: flex;
  gap: 1.5rem;
  margin-top: 1.5rem;
  flex-wrap: wrap;
}

.stat-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.5rem;
  text-align: center;
  min-width: 100px;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.stat-card:hover {
  border-color: var(--cyan);
  box-shadow: var(--glow-cyan);
}

.stat-number {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  font-family: 'JetBrains Mono', monospace;
  color: var(--cyan);
}
.stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ===== SKILLS ===== */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 1rem;
}

.skill-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem 1rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
  cursor: default;
}
.skill-card:hover {
  transform: translateY(-4px);
  border-color: var(--cyan);
  box-shadow: var(--glow-cyan);
}

.skill-icon { font-size: 2rem; }
.html-icon   { color: #e34c26; }
.css-icon    { color: #264de4; }
.js-icon     { color: #f7df1e; }
.git-icon    { color: #f05032; }
.dart-icon   { color: #54c5f8; }
.dart2-icon  { color: #00b4ab; }
.unity-icon  { color: #e6edf3; }
.python-icon { color: #3776ab; }
.csharp-icon {
  font-size: 1.5rem;
  font-weight: 700;
  font-family: 'JetBrains Mono', monospace;
  color: #9b4f96;
  line-height: 1;
}
.dart-dot   { background: #54c5f8; }
.unity-dot  { background: #e6edf3; }
.github-icon { color: #e6edf3; }
.terminal-icon { color: var(--green); }

.skill-name {
  font-weight: 600;
  font-size: 0.95rem;
}
.skill-tag {
  font-size: 0.7rem;
  color: var(--text-muted);
  font-family: 'JetBrains Mono', monospace;
}

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

/* Project badge */
.project-badge {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 600;
  font-family: 'JetBrains Mono', monospace;
  padding: 0.2rem 0.55rem;
  border-radius: 20px;
  margin-bottom: 0.5rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.badge-amber {
  background: rgba(210, 153, 34, 0.15);
  color: #d29922;
  border: 1px solid rgba(210, 153, 34, 0.4);
}
.badge-green {
  background: rgba(63, 185, 80, 0.15);
  color: var(--green);
  border: 1px solid rgba(63, 185, 80, 0.4);
}

.project-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}
.project-card:hover {
  border-color: var(--purple);
  box-shadow: var(--glow-purple);
  transform: translateY(-3px);
}
.project-card--placeholder {
  border-style: dashed;
  opacity: 0.5;
}
.project-card--placeholder:hover {
  opacity: 0.8;
  border-color: var(--border);
  box-shadow: none;
  transform: none;
}

.project-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 1.8rem;
}
.project-icon { color: var(--text-muted); font-size: 1.2rem; }

.project-name {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--cyan);
}
.project-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  flex: 1;
  line-height: 1.5;
}

.project-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
}
.project-lang {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  color: var(--text-muted);
}
.lang-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--border);
}
.js-dot { background: #f7df1e; }

.project-links { display: flex; gap: 0.5rem; }
.project-link {
  color: var(--text-muted);
  font-size: 0.85rem;
  transition: color var(--transition);
}
.project-link:hover { color: var(--cyan); }

/* ===== CONTACT ===== */
.contact-intro {
  color: var(--text-muted);
  margin-bottom: 2rem;
  font-size: 1.05rem;
}

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

.contact-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  text-align: center;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}
.contact-card:hover {
  transform: translateY(-4px);
  border-color: var(--cyan);
  box-shadow: var(--glow-cyan);
}

.contact-icon { font-size: 2rem; color: var(--text-muted); transition: color var(--transition); }
.contact-card:hover .contact-icon { color: var(--cyan); }
.tg-icon  { }
.mail-icon { }

.contact-label {
  font-weight: 600;
  font-size: 0.95rem;
}
.contact-handle {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-family: 'JetBrains Mono', monospace;
}

/* ===== FOOTER ===== */
.footer {
  text-align: center;
  padding: 2rem;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* ===== ANIMATIONS ===== */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}
@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(8px); }
}
@keyframes spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== MOBILE ===== */
@media (max-width: 640px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 60px; left: 0; right: 0;
    flex-direction: column;
    background: var(--bg2);
    border-bottom: 1px solid var(--border);
    padding: 1.5rem 2rem;
    gap: 1.25rem;
  }
  .nav-links.open { display: flex; }
  .hamburger { display: flex; }

  .about-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .avatar-wrapper { margin: 0 auto; }
  .about-stats { justify-content: center; }

  .section { padding: 4rem 1rem; }
}