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

:root {
  --color-bg: #0a0a0f;
  --color-surface: #12121a;
  --color-surface-alt: #1a1a2e;
  --color-border: #2a2a3e;
  --color-text: #e4e4ed;
  --color-text-muted: #9999aa;
  --color-accent: #6366f1;
  --color-accent-light: #818cf8;
  --color-accent-glow: rgba(99, 102, 241, 0.15);
  --font: 'Inter', system-ui, -apple-system, sans-serif;
  --radius: 12px;
  --radius-sm: 8px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 2rem;
}

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

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 30% 20%, rgba(99, 102, 241, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 70% 80%, rgba(139, 92, 246, 0.06) 0%, transparent 50%);
}

.hero-content {
  position: relative;
  text-align: center;
  padding: 4rem 2rem;
}

.avatar {
  margin-bottom: 2rem;
}

.avatar img {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  border: 3px solid var(--color-accent);
  box-shadow: 0 0 40px var(--color-accent-glow);
  object-fit: cover;
}

.hero h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.25rem;
}

.tagline {
  font-size: 1.25rem;
  color: var(--color-accent-light);
  font-weight: 500;
  margin-bottom: 1rem;
}

.subtitle {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  max-width: 540px;
  margin: 0 auto 2.5rem;
}

.hero-links {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* === Buttons === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.2s ease;
}

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

.btn-primary:hover {
  background: var(--color-accent-light);
  transform: translateY(-1px);
  box-shadow: 0 4px 20px var(--color-accent-glow);
}

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

.btn-outline:hover {
  border-color: var(--color-accent);
  color: var(--color-accent-light);
  transform: translateY(-1px);
}

/* === Sections === */
.section {
  padding: 6rem 0;
}

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

.section-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 2rem;
  letter-spacing: -0.01em;
}

/* === Services === */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.service-card {
  padding: 2rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: border-color 0.2s, transform 0.2s;
}

.service-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
}

.service-icon {
  font-size: 2rem;
  display: block;
  margin-bottom: 1rem;
}

.service-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.75rem;
}

.service-card p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* === About === */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 3rem;
  align-items: start;
}

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

.about-text strong {
  color: var(--color-text);
}

.about-details {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.detail-card {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
}

.detail-icon {
  font-size: 1.25rem;
}

/* === Skills === */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.skill-category {
  padding: 1.5rem;
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: border-color 0.2s;
}

.skill-category:hover {
  border-color: var(--color-accent);
}

.skill-category h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-accent-light);
  margin-bottom: 0.75rem;
}

.skill-category ul {
  list-style: none;
}

.skill-category li {
  padding: 0.3rem 0;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.skill-category li::before {
  content: "→ ";
  color: var(--color-accent);
}

/* === Niche Intro === */
.niche-intro {
  color: var(--color-text-muted);
  font-size: 1.05rem;
  margin-bottom: 2rem;
  max-width: 600px;
}

.niche-intro strong {
  color: var(--color-text);
}

/* === Contact === */
.contact-section {
  text-align: center;
}

.contact-section p {
  color: var(--color-text-muted);
  max-width: 480px;
  margin: 0 auto 2rem;
}

.contact-links {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  flex-wrap: wrap;
}

.contact-links a {
  color: var(--color-accent-light);
  text-decoration: none;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: all 0.2s;
}

.contact-links a:hover {
  border-color: var(--color-accent);
  background: var(--color-accent-glow);
}

/* === Footer === */
footer {
  padding: 2rem 0;
  text-align: center;
  border-top: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

/* === Scroll Indicator === */
.scroll-indicator {
  display: inline-block;
  margin-top: 3rem;
  color: var(--color-text-muted);
  animation: bounce 2s infinite;
  transition: color 0.2s;
}

.scroll-indicator:hover {
  color: var(--color-accent-light);
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
  40% { transform: translateY(8px); }
  60% { transform: translateY(4px); }
}

/* === Responsive === */
@media (max-width: 768px) {
  .container {
    padding: 0 1.25rem;
  }

  .hero {
    min-height: auto;
    padding: 4rem 0 2rem;
  }

  .hero-content {
    padding: 2rem 1rem;
  }

  .hero h1 {
    font-size: 2.25rem;
  }

  .tagline {
    font-size: 1.1rem;
  }

  .subtitle {
    font-size: 1rem;
    margin-bottom: 2rem;
  }

  .avatar img {
    width: 120px;
    height: 120px;
  }

  .hero-links {
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
  }

  .btn {
    width: 100%;
    max-width: 260px;
    justify-content: center;
  }

  .scroll-indicator {
    margin-top: 2rem;
  }

  .section {
    padding: 3.5rem 0;
  }

  .section-title {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .about-text p {
    font-size: 0.95rem;
  }

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

  .service-card {
    padding: 1.5rem;
  }

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

  .contact-links {
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
  }

  .contact-links a {
    display: block;
    width: 100%;
    max-width: 260px;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 1.85rem;
  }

  .avatar img {
    width: 100px;
    height: 100px;
  }

  .detail-card {
    padding: 0.75rem 1rem;
    font-size: 0.9rem;
  }

  .skill-category {
    padding: 1.25rem;
  }
}