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

:root {
  --bg: #0f1220;
  --bg-alt: #151a2e;
  --card: #1b2138;
  --text: #e8eaf6;
  --muted: #9aa0b5;
  --primary: #6c63ff;
  --primary-hover: #544fe0;
  --accent: #00d4aa;
  --radius: 12px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.container {
  width: min(1100px, 90%);
  margin: 0 auto;
}

/* ---------- Navbar ---------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(15, 18, 32, 0.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  z-index: 100;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--primary);
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.3s;
}

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

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

.burger span {
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: 0.3s;
}

/* ---------- Hero ---------- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 64px;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 3rem;
}

.hero-greet {
  color: var(--accent);
  font-weight: 600;
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  background: linear-gradient(90deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1.1;
  margin: 0.3rem 0;
}

.hero-role {
  font-size: 1.15rem;
  color: var(--muted);
}

.hero-desc {
  margin: 1rem 0 1.5rem;
  color: var(--muted);
  max-width: 480px;
}

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

.btn {
  display: inline-block;
  padding: 0.7rem 1.5rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  transition: 0.3s;
  border: none;
  cursor: pointer;
}

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

.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
}

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

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

.hero-code pre {
  background: var(--card);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  padding: 1.5rem;
  overflow-x: auto;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.hero-code code {
  font-family: 'Consolas', 'Courier New', monospace;
  font-size: 0.95rem;
}

.c-com { color: var(--muted); }
.c-key { color: #ff7ecf; }
.c-str { color: var(--accent); }

/* ---------- Sections ---------- */
.section {
  padding: 5rem 0;
}

.section-alt {
  background: var(--bg-alt);
}

.section-title {
  text-align: center;
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  margin-bottom: 3rem;
}

.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 4px;
  margin: 0.5rem auto 0;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
}

/* ---------- About ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3rem;
  align-items: center;
}

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

.skills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1rem;
}

.skill {
  background: var(--card);
  border: 1px solid var(--primary);
  color: var(--primary);
  padding: 0.3rem 0.9rem;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 600;
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.stat {
  background: var(--card);
  border-radius: var(--radius);
  padding: 1.5rem 1rem;
  text-align: center;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.stat-num {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
}

.stat-label {
  color: var(--muted);
  font-size: 0.9rem;
}

/* ---------- Projects ---------- */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.card {
  background: var(--card);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.06);
  transition: transform 0.3s, box-shadow 0.3s;
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.4);
}

.card-thumb {
  height: 160px;
}

.thumb-1 { background: linear-gradient(135deg, var(--primary), #9b59b6); }
.thumb-2 { background: linear-gradient(135deg, var(--accent), #2ecc71); }
.thumb-3 { background: linear-gradient(135deg, #e67e22, #e74c3c); }

.card-body {
  padding: 1.2rem;
}

.card-body h3 {
  margin-bottom: 0.4rem;
}

.card-body p {
  color: var(--muted);
  font-size: 0.95rem;
  margin-bottom: 0.8rem;
}

.tag {
  display: inline-block;
  background: rgba(108, 99, 255, 0.15);
  color: var(--primary);
  padding: 0.15rem 0.6rem;
  border-radius: 6px;
  font-size: 0.8rem;
  margin-right: 0.3rem;
  font-weight: 600;
}

/* ---------- Contact ---------- */
.contact-intro {
  text-align: center;
  color: var(--muted);
  margin-bottom: 2rem;
}

.mailto {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}

.mailto:hover {
  text-decoration: underline;
}

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

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 0.8rem 1rem;
  background: var(--card);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  color: var(--text);
  font-family: inherit;
  font-size: 1rem;
  transition: border-color 0.3s;
}

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

.contact-form textarea {
  resize: vertical;
}

.form-msg {
  text-align: center;
  color: var(--accent);
  font-weight: 600;
  min-height: 1.5rem;
}

/* ---------- Footer ---------- */
.footer {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 1.5rem 0;
  text-align: center;
  color: var(--muted);
}

/* ---------- Reveal animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s, transform 0.6s;
}

.reveal.visible {
  opacity: 1;
  transform: none;
}

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .hero-inner,
  .about-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 100px;
  }

  .hero-code {
    order: -1;
  }

  .projects-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin: 0 auto;
  }

  .nav-links {
    position: fixed;
    top: 64px;
    right: 0;
    flex-direction: column;
    background: var(--bg-alt);
    width: 100%;
    padding: 1rem 0;
    gap: 1.5rem;
    text-align: center;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }

  .nav-links.open {
    transform: translateX(0);
  }

  .burger {
    display: flex;
  }

  .burger.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

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

  .burger.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }
}

@media (max-width: 520px) {
  .form-row {
    grid-template-columns: 1fr;
  }

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

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-actions .btn {
    text-align: center;
  }
}