/* ============ Reset & base ============ */
* { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0f1115;
  --bg-alt: #15181f;
  --text: #edeef2;
  --text-muted: #9aa0ac;
  --accent: #818cf8;
  --accent-2: #22d3ee;
  --border: #262b36;
  --card-bg: #1a1e27;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
  --font-body: 'Poppins', system-ui, sans-serif;
  --font-head: 'Space Grotesk', 'Inter', system-ui, sans-serif;
  --radius: 14px;
  --transition: 0.25s ease;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background var(--transition), color var(--transition);
}

h1, h2, h3 { font-family: var(--font-head); line-height: 1.15; }

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

ul { list-style: none; }

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

.container {
  width: 100%;
  max-width: 1120px;
  margin-inline: auto;
  padding-inline: 24px;
}

/* ============ Reveal animation ============ */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============ Buttons ============ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform var(--transition), background var(--transition), color var(--transition), border-color var(--transition);
  border: 2px solid transparent;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--accent); color: #fff; }
.btn-outline { border-color: var(--border); color: var(--text); }
.btn-outline:hover { border-color: var(--accent); }
.btn-lg { padding: 16px 32px; font-size: 1.05rem; margin-top: 8px; }

.icon-btn {
  background: none;
  border: none;
  color: var(--text);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  transition: background var(--transition);
}
.icon-btn:hover { background: var(--bg-alt); }
.icon { width: 20px; height: 20px; }

.lang-toggle {
  background: none;
  border: 1px solid var(--border);
  color: var(--text);
  cursor: pointer;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.02em;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  transition: background var(--transition), border-color var(--transition);
}
.lang-toggle:hover { background: var(--bg-alt); border-color: var(--accent); }

/* ============ Navbar ============ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), background var(--transition);
}
.navbar.scrolled { border-bottom-color: var(--border); }

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.3rem;
  letter-spacing: -0.02em;
}
.logo-dot { color: var(--accent); }

.nav-links {
  display: flex;
  gap: 32px;
}
.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-muted);
  position: relative;
  padding: 4px 0;
  transition: color var(--transition);
}
.nav-link:hover, .nav-link.active { color: var(--text); }
.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: -2px; left: 0;
  width: 100%; height: 2px;
  background: var(--accent);
  border-radius: 2px;
}

.navbar-actions { display: flex; align-items: center; gap: 4px; }

.menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 10px;
}
.menu-btn span {
  width: 20px; height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.menu-btn.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-btn.open span:nth-child(2) { opacity: 0; }
.menu-btn.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============ Hero ============ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 72px;
  position: relative;
  background:
    radial-gradient(circle at 85% 15%, color-mix(in srgb, var(--accent) 15%, transparent), transparent 55%);
}

#hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

.hero-inner {
  max-width: 780px;
  position: relative;
  z-index: 1;
}

.hero-text h1 {
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  text-shadow: 0 0 20px var(--bg), 0 0 44px var(--bg), 0 0 70px var(--bg);
}

.hero-role {
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  font-weight: 500;
  color: var(--text-muted);
  margin-top: 12px;
  text-shadow: 0 0 16px var(--bg), 0 0 36px var(--bg);
}

.social-links {
  display: flex;
  gap: 12px;
  margin-top: 32px;
}
.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px; height: 42px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  backdrop-filter: blur(6px);
  transition: border-color var(--transition), transform var(--transition), color var(--transition);
}
.social-links a:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-3px); }

.scroll-indicator {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--text-muted);
  font-size: 1.3rem;
  animation: bounce 2s infinite;
  z-index: 1;
}
@keyframes bounce {
  0%, 100% { transform: translate(-50%, 0); }
  50% { transform: translate(-50%, 8px); }
}

/* ============ Sections ============ */
.section { padding: 120px 0; }
.section-alt { background: var(--bg-alt); }

.section-eyebrow {
  color: var(--accent);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 0.85rem;
  margin-bottom: 8px;
}
.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}
.section-desc { color: var(--text-muted); max-width: 60ch; margin-bottom: 40px; }

/* ============ Expertise ============ */
.expertise-grid {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-top: 40px;
}
.expertise-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.expertise-card:hover { border-color: var(--accent); box-shadow: var(--shadow); }
.expertise-card h3 {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.2;
  margin-bottom: 4px;
}
.expertise-accent {
  position: relative;
  z-index: 0;
}
.expertise-accent::after {
  content: '';
  position: absolute;
  left: -0.18em;
  right: -0.18em;
  bottom: 0;
  height: 30%;
  background: var(--accent);
  z-index: -1;
}
.expertise-desc {
  border-left: 2px solid var(--border);
  padding-left: 18px;
  margin: 16px 0 20px;
}
.expertise-desc p { color: var(--text-muted); font-size: 1rem; max-width: 65ch; margin: 6px 0; }

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.tag-list li {
  font-size: 0.8rem;
  font-weight: 500;
  padding: 5px 12px;
  border-radius: 999px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  color: var(--text-muted);
}
.tag-list.small li { font-size: 0.75rem; padding: 4px 10px; }

/* ============ Work / filter / project grid ============ */
.filter-bar {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}
.filter-btn {
  padding: 8px 18px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all var(--transition);
}
.filter-btn:hover { color: var(--text); }
.filter-btn.active { background: var(--accent); border-color: var(--accent); color: #fff; }

.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
}
.project-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}
.project-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.project-card.hidden { display: none; }

.project-thumb {
  aspect-ratio: 16/10;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, color-mix(in srgb, var(--accent) 25%, var(--bg-alt)), color-mix(in srgb, var(--accent-2) 25%, var(--bg-alt)));
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 600;
}
img.project-thumb {
  width: 100%;
  object-fit: cover;
}
.logo-thumb {
  background: var(--bg-alt);
}
img.logo-thumb {
  object-fit: contain;
  padding: 56px;
}
.app-icon-thumb {
  width: 40%;
  aspect-ratio: 1/1;
  object-fit: cover;
  border-radius: 22%;
  box-shadow: var(--shadow);
}
.project-body { padding: 24px; }
.project-body h3 { font-size: 1.1rem; margin-bottom: 8px; }
.project-body p { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 16px; }
.project-body .tag-list { margin-bottom: 16px; }
.project-link { color: var(--accent); font-weight: 600; font-size: 0.9rem; }

/* ============ Timeline ============ */
.timeline {
  position: relative;
  margin-top: 40px;
  padding-left: 32px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: -1px;
  top: 11px;
  bottom: 0;
  width: 2px;
  background: var(--border);
}
.timeline-item { position: relative; padding-bottom: 48px; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-dot {
  position: absolute;
  left: -32px;
  transform: translateX(-50%);
  top: 4px;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--bg);
  box-shadow: 0 0 0 2px var(--accent);
}
.timeline-header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 4px;
}
.timeline-header h3 { font-size: 1.1rem; }
.timeline-date { color: var(--text-muted); font-size: 0.85rem; font-weight: 600; }
.timeline-company { color: var(--accent); font-weight: 600; font-size: 0.9rem; margin-bottom: 10px; }
.timeline-item p:not(.timeline-company) { color: var(--text-muted); margin-bottom: 14px; font-size: 0.95rem; }

/* ============ Education ============ */
.education {
  margin-top: 56px;
  padding-top: 40px;
  border-top: 1px solid var(--border);
}
.education h3 { font-size: 1.1rem; margin-bottom: 20px; }
.education-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
}
.education-list li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 18px 20px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.education-list strong { font-size: 0.95rem; }
.education-list span { color: var(--text-muted); font-size: 0.85rem; }

/* ============ Testimonials ============ */
.testimonial-carousel { max-width: 720px; margin: 40px auto 0; text-align: center; }
.testimonial-track { position: relative; min-height: 200px; }
.testimonial-card {
  position: absolute;
  inset: 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.4s ease;
}
.testimonial-card.active { opacity: 1; visibility: visible; position: relative; }
.testimonial-card p {
  font-size: 1.2rem;
  font-weight: 500;
  line-height: 1.6;
  margin-bottom: 20px;
}
.testimonial-card footer strong { display: block; }
.testimonial-card footer span { color: var(--text-muted); font-size: 0.9rem; }

.testimonial-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-top: 24px;
}
.testimonial-dots { display: flex; gap: 8px; }
.testimonial-dots button {
  width: 8px; height: 8px;
  border-radius: 50%;
  border: none;
  background: var(--border);
  cursor: pointer;
  padding: 0;
  transition: background var(--transition), transform var(--transition);
}
.testimonial-dots button.active { background: var(--accent); transform: scale(1.3); }

/* ============ Contact ============ */
.contact-section { text-align: center; }
.contact-section .section-title { margin-bottom: 32px; }
.contact-social {
  justify-content: center;
  margin-top: 32px;
}

/* ============ Footer ============ */
.footer {
  padding: 32px 0;
  border-top: 1px solid var(--border);
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* ============ Responsive ============ */
@media (max-width: 860px) {
  .hero-inner { text-align: center; margin-inline: auto; }
  .social-links { justify-content: center; }

  .nav-links {
    position: fixed;
    top: 72px; left: 0; right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: center;
    padding: 24px 0;
    gap: 20px;
    transform: translateY(-150%);
    opacity: 0;
    transition: transform var(--transition), opacity var(--transition);
  }
  .nav-links.open { transform: translateY(0); opacity: 1; }
  .menu-btn { display: flex; }
}

@media (max-width: 600px) {
  .expertise-card { padding: 28px; }
}

@media (max-width: 480px) {
  .section { padding: 80px 0; }
  .container { padding-inline: 20px; }
}