/* Reset and Base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --accent: #6366f1;
  --accent-light: #818cf8;
  --dark: #0d0f17;
  --surface: #161923;
  --surface-2: #1c202c;
  --border: #2d3140;
  --text: #c9cbd6;
  --muted: #8a8da0;
  --white: #f5f6fb;
}

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: linear-gradient(135deg, var(--dark) 0%, #10131b 100%);
  color: var(--text);
  line-height: 1.6;
}

a { color: var(--accent); text-decoration: none; transition: color 0.3s ease; }
a:hover { color: var(--accent-light); }

nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13, 15, 23, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(99, 102, 241, 0.2);
  padding: 1rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  overflow: visible;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.nav-thumb {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid rgba(99, 102, 241, 0.75);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.45);
  background: #0d0f17;
}

.nav-links { display: flex; gap: 2rem; list-style: none; }
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(99, 102, 241, 0.45);
  border-radius: 10px;
  background: rgba(13, 15, 23, 0.85);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--white);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-open .nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav-links a {
  color: var(--text);
  font-size: 0.95rem;
  position: relative;
  font-weight: 500;
}

.nav-links a::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width 0.3s ease;
}

.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }

section {
  padding: 1rem 2rem;
  max-width: 1000px;
  margin: 0 auto;
}

h2 {
  font-size: 2rem;
  color: var(--white);
  margin-bottom: 2.5rem;
  padding-bottom: 1rem;
  border-bottom: 3px solid var(--accent);
  display: inline-block;
  font-weight: 700;
}

h3 {
  color: var(--white);
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
  font-size: 1.2rem;
}

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

/* ---------- hero ---------- */
#hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  max-width: 1000px;
  margin: 0 auto;
  padding: 2rem;
}

.hero-tag {
  color: var(--accent);
  font-size: 1rem;
  margin-bottom: 1rem;
  letter-spacing: 0.15em;
  font-weight: 600;
  text-transform: uppercase;
}

#hero h1 {
  font-size: clamp(2.5rem, 8vw, 4rem);
  color: var(--white);
  line-height: 1.1;
  margin-bottom: 1rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--white) 0%, var(--accent-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

#hero .subtitle {
  font-size: clamp(1.05rem, 2.5vw, 1.4rem);
  color: var(--muted);
  margin-bottom: 2.5rem;
  max-width: 650px;
  line-height: 1.8;
}

.hero-cta { display: flex; gap: 1.5rem; flex-wrap: wrap; margin-top: 1rem; }

.btn {
  display: inline-block;
  padding: 0.85rem 2rem;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
  text-decoration: none;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.3);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
  color: #fff;
}

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

.btn-outline:hover { background: rgba(99, 102, 241, 0.1); color: var(--white); }

/* ---------- about ---------- */
#about {
  background: linear-gradient(135deg, rgba(99,102,241,0.03) 0%, transparent 100%);
  border-radius: 12px;
  padding: 1rem 2rem;
}

#about ul {
  list-style: none;
  margin-top: 2rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

#about li {
  background: var(--surface);
  padding: 1.2rem;
  border-radius: 8px;
  border-left: 4px solid var(--accent);
  transition: all 0.3s ease;
}

#about li:hover {
  transform: translateX(5px);
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.2);
}

/* ---------- experience ---------- */
#experience > div {
  background: var(--surface);
  padding: 1.8rem;
  margin-bottom: 1.5rem;
  border-radius: 10px;
  border-left: 4px solid var(--accent);
  transition: all 0.3s ease;
}

#experience > div:hover {
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.15);
  transform: translateY(-2px);
}

#experience .role-meta {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 0.8rem;
}

#experience ul {
  list-style: none;
  margin-top: 1rem;
}

#experience li {
  padding: 0.4rem 0;
  padding-left: 1.5rem;
  position: relative;
  color: var(--text);
}

#experience li::before {
  content: "▸";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: bold;
}

/* ---------- skills ---------- */
#skills .skills-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1.5rem;
}

.skill-badge {
  background: linear-gradient(135deg, rgba(99,102,241,0.2) 0%, rgba(99,102,241,0.05) 100%);
  color: var(--accent-light);
  padding: 0.6rem 1.2rem;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 500;
  border: 1px solid rgba(99, 102, 241, 0.3);
  transition: all 0.3s ease;
  display: inline-block;
}

.skill-badge:hover {
  background: linear-gradient(135deg, rgba(99,102,241,0.4) 0%, rgba(99,102,241,0.2) 100%);
  transform: scale(1.05);
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.25);
}

/* ---------- projects ---------- */
#projects > div {
  background: linear-gradient(135deg, var(--surface) 0%, var(--surface-2) 100%);
  padding: 1.4rem 1.6rem;
  margin-bottom: 1rem;
  border-radius: 12px;
  border: 1px solid var(--border);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

#projects > div::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
}

#projects > div:hover {
  border-color: var(--accent);
  box-shadow: 0 8px 32px rgba(99, 102, 241, 0.2);
  transform: translateY(-4px);
}

#projects > div:hover::before { opacity: 1; }

#projects h3 {
  color: var(--accent-light);
  margin-bottom: 0.4rem;
  margin-top: 0;
  font-size: 1.1rem;
}

#projects p { margin-bottom: 0.6rem; }

.project-link {
  font-size: 0.9rem;
  font-weight: 600;
}

/* ---------- contact ---------- */
#contact {
  text-align: center;
  background: linear-gradient(135deg, rgba(99,102,241,0.08) 0%, transparent 100%);
  border-radius: 12px;
  padding: 1rem 2rem 2rem;
}

#contact p { font-size: 1.1rem; margin: 1rem 0; }

#contact a.btn {
  margin-top: 0.5rem;
}

.copyright {
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
  padding: 2rem 1rem 3rem;
}

/* ---------- floating social rail ---------- */
.floating-social-links {
  position: fixed;
  right: 1.1rem;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  z-index: 120;
}

.floating-social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem;
  border-radius: 50%;
  border: 1px solid rgba(99, 102, 241, 0.35);
  background: rgba(13, 15, 23, 0.9);
  color: var(--text);
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(7px);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease, color 0.2s ease;
}

.floating-social-links a:hover {
  transform: translateX(-4px);
  border-color: var(--accent-light);
  box-shadow: 0 12px 26px rgba(99, 102, 241, 0.22);
  color: var(--white);
}

.floating-social-links svg {
  width: 1.05rem;
  height: 1.05rem;
  fill: currentColor;
  flex-shrink: 0;
}

.floating-social-links svg.icon-outline {
  fill: none;
}

/* ---------- responsive ---------- */
@media (max-width: 768px) {
  section { padding: 1rem 1.5rem; }
  h2 { font-size: 1.5rem; }
  #hero h1 { font-size: 2rem; }
  .nav-toggle { display: flex; }
  .nav-links {
    position: absolute;
    top: calc(100% + 0.5rem);
    right: 1.5rem;
    width: min(260px, calc(100vw - 3rem));
    background: rgba(13, 15, 23, 0.98);
    border: 1px solid rgba(99, 102, 241, 0.25);
    border-radius: 12px;
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.45);
    padding: 0.9rem;
    flex-direction: column;
    gap: 0.8rem;
    opacity: 0;
    transform: translateY(-8px);
    pointer-events: none;
    transition: opacity 0.2s ease, transform 0.2s ease;
  }

  .nav-open .nav-links {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }

  .nav-links a { display: inline-block; }
  nav { padding: 0.75rem 1.5rem; }

  .floating-social-links {
    top: auto;
    bottom: 1rem;
    left: 50%;
    right: auto;
    transform: translateX(-50%);
    flex-direction: row;
    gap: 0.45rem;
  }

  .floating-social-links a { padding: 0.45rem; }
}

@media (max-width: 480px) {
  .nav-thumb { width: 44px; height: 44px; }
  .hero-cta { flex-direction: column; }
  .btn { width: 100%; text-align: center; }
}