header {
  height: 80px;
  background: var(--bg-white);
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  display: flex;
  justify-content: center;
  position: fixed;

  top: 0;
  left: 0;
  right: 0;
  z-index: 9999;
}

.header-wrapper {
  width: 100%;
  max-width: 1280px;
  padding: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Logo */
.header-logo {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--primary-blue);
  letter-spacing: -0.5px;
  cursor: pointer;
}

/* Nav (Desktop) */
.nav-wrapper {
  display: flex;
  gap: 32px;
}

.nav-item {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-main);
  cursor: pointer;
}

.nav-item:hover,
.nav-item.active {
  color: var(--primary-blue);
}

/* Auth */
.auth-wrapper {
  display: flex;
  align-items: center;
  gap: 20px;
}

.header-login-btn {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-sub);
  cursor: pointer;
}

.header-login-btn:hover {
  color: var(--primary-blue);
}

.header-sign-btn {
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  background: var(--primary-blue);
  color: #fff;
  padding: 6px 14px;
  border-radius: 4px;
}

.nav-toggle {
  display: none;
}

.nav-hamburger {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
}

.nav-hamburger span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text-main);
  border-radius: 999px;
  transition: 0.25s;
}

.user-profile-v1-auth {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 20px;
}

@media (max-width: 1024px) {
  header {
    height: 72px;
  }

  .header-wrapper {
    padding: 0 16px;
  }

  .nav-wrapper {
    gap: 20px;
  }

  .nav-item {
    font-size: 0.95rem;
  }

  .auth-wrapper {
    gap: 12px;
  }

  .header-sign-btn {
    padding: 6px 12px;
  }
}

/* ===== user dropdown ===== */
.user-menu {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.user-name-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 10px;

  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(6px);
  cursor: pointer;
  font-size: 14px;
  font-weight: 700;
  color: #222;
}

.user-name-btn i {
  font-size: 12px;
  color: #666;
}

.user-dropdown {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  min-width: 180px;
  padding: 8px;
  border-radius: 12px;

  background: rgba(20, 20, 20, 0.88);
  color: #fff;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.18);

  display: none;

  z-index: 999;
}

.user-menu.is-open .user-dropdown {
  display: block;
}

.user-dropdown a,
.user-dropdown button {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: flex-start;

  padding: 10px 10px;
  border-radius: 10px;
  font-size: 13px;
  font-weight: 600;

  color: #fff;
  background: transparent;
  border: none;
  cursor: pointer;
  text-align: left;
}

.user-dropdown a:hover,
.user-dropdown button:hover {
  background: rgba(255, 255, 255, 0.12);
}

/* 모바일에서 화면 밖으로 튀는거 방지 */
@media (max-width: 640px) {
  .user-dropdown {
    right: 0;
    min-width: 160px;
  }
}

@media (max-width: 768px) {
  header {
    height: 64px;
  }

  .header-logo {
    font-size: 1.3rem;
  }

  .nav-wrapper {
    display: none;
  }

  .nav-hamburger {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: 64px;

    left: 0;
    right: 0;
    background: var(--bg-white);
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    padding: 20px 16px;
    display: none;
    flex-direction: column;
    gap: 16px;
  }

  .nav-toggle:checked ~ .nav-menu {
    display: flex;
  }

  .nav-item {
    font-size: 1rem;
    padding: 10px 8px;
    border-radius: 10px;
  }

  .nav-item:hover {
    background: rgba(0, 0, 0, 0.04);
  }

  .auth-wrapper {
    gap: 10px;
  }

  .header-login-btn,
  .header-sign-btn {
    font-size: 0.88rem;
  }

  .header-sign-btn {
    border-radius: 10px;
  }

  /* hamburger -> X */
  .nav-toggle:checked + .nav-hamburger span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .nav-toggle:checked + .nav-hamburger span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle:checked + .nav-hamburger span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }
}

@media (max-width: 480px) {
  .header-wrapper {
    padding: 12px;
  }

  .header-login-btn {
    display: none;
  }
}