/* ============================================================
 * dev-portfolio · 样式模块
 * 导航栏与 Hero 首屏
 * ------------------------------------------------------------
 * 由 index.html 内联代码拆分而来，内容未做改写。
 * ============================================================ */
/* ==================== Navigation ==================== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 0.75rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255, 248, 245, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 107, 71, 0.08);
  transition: padding var(--transition);
}
.nav.scrolled { padding: 0.5rem 2rem; box-shadow: var(--shadow-sm); }

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--navy);
}
.nav-logo-icon {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--coral), var(--coral-dark));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.1rem;
  box-shadow: var(--shadow-coral);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
}
.nav-links a {
  padding: 0.5rem 0.9rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-light);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}
.nav-links a:hover { color: var(--coral); background: rgba(255,107,71,0.06); }

.lang-toggle {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.35rem;
  background: rgba(255,107,71,0.08);
  border-radius: 20px;
}
.lang-btn {
  padding: 0.3rem 0.7rem;
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: 16px;
  color: var(--text-light);
  transition: all var(--transition);
}
.lang-btn.active {
  background: var(--coral);
  color: white;
}

.nav-mobile-toggle { display: none; }

/* ==================== Hero ==================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding: 6rem 2rem 3rem;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  z-index: 0;
}
.hero-bg canvas { width: 100%; height: 100%; }
.hero-content {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 0.8fr;
  gap: 3rem;
  align-items: center;
}
.hero-text { max-width: 580px; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 1rem;
  background: rgba(255,107,71,0.1);
  border: 1px solid rgba(255,107,71,0.2);
  border-radius: 20px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--coral-dark);
  margin-bottom: 1.5rem;
}
.hero-badge .dot {
  width: 8px; height: 8px;
  background: var(--coral);
  border-radius: 50%;
  animation: pulse 2s infinite;
}
.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 900;
  line-height: 1.05;
  color: var(--navy);
  margin-bottom: 1.2rem;
  letter-spacing: -0.02em;
}
.hero h1 .accent { color: var(--coral); }
.hero p {
  font-size: 1.1rem;
  color: var(--text-light);
  margin-bottom: 2rem;
  line-height: 1.7;
}
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.8rem;
  background: linear-gradient(135deg, var(--coral), var(--coral-dark));
  color: white;
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-coral);
  transition: all var(--transition);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 40px rgba(255,107,71,0.35); }
.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.8rem;
  background: white;
  color: var(--navy);
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius-md);
  border: 2px solid var(--cream-dark);
  transition: all var(--transition);
}
.btn-secondary:hover { border-color: var(--coral); color: var(--coral); transform: translateY(-2px); }

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}
.hero-avatar-wrap {
  position: relative;
  width: 340px;
  height: 340px;
}
.hero-avatar-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
  border: 6px solid white;
  box-shadow: var(--shadow-lg);
}
.hero-avatar-wrap::before {
  content: '';
  position: absolute;
  top: -12px; left: -12px; right: -12px; bottom: -12px;
  border: 3px dashed var(--coral);
  border-radius: 50%;
  opacity: 0.3;
  animation: spin 25s linear infinite;
}
.float-card {
  position: absolute;
  background: white;
  padding: 0.6rem 1rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  font-size: 0.85rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  animation: float 4s ease-in-out infinite;
}
.float-card .icon { font-size: 1.1rem; }
.float-card-1 { top: 8%; right: -5%; animation-delay: 0s; }
.float-card-2 { bottom: 12%; left: -8%; animation-delay: 1.5s; }
.float-card-3 { top: 45%; right: -10%; animation-delay: 3s; }

.hero-stats {
  display: flex;
  gap: 2.5rem;
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--cream-dark);
}
.stat-item .num {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 800;
  color: var(--coral);
  line-height: 1;
}
.stat-item .label {
  font-size: 0.82rem;
  color: var(--text-mute);
  margin-top: 0.3rem;
}