/* ===================================================
   HEADER COMPONENT CSS
   =================================================== */

/* ── Header ── */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--transition);
}
.header.scrolled { box-shadow: 0 2px 20px rgba(0,0,0,0.08); }

.header__inner {
  display: flex;
  align-items: center;
  height: 70px;
  gap: 0;
}

/* ── Logo ── */
.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  margin-right: auto;
}
.logo__icon { font-size: 1.5rem; line-height: 1; }
.logo__text {
  font-family: var(--font-head);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--dark);
  letter-spacing: -0.01em;
}
.logo__text em { color: var(--primary); font-style: italic; }
.logo--white .logo__text { color: #fff; }
.logo--white .logo__text em { color: var(--accent); }

/* ── Nav ── */
.nav {
  display: flex;
  align-items: center;
  gap: 2px;
  margin: 0 16px;
}
.nav__link {
  padding: 7px 13px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 500;
  color: #444;
  transition: var(--transition);
  white-space: nowrap;
}
.nav__link:hover  { color: var(--primary); background: var(--primary-lt); }
.nav__link.active { color: var(--primary); background: var(--primary-lt); font-weight: 600; }
.nav__link--cta {
  background: var(--primary);
  color: #fff !important;
  border-radius: 50px;
  padding: 7px 18px;
  margin-left: 4px;
}
.nav__link--cta:hover  { background: var(--primary-dk) !important; }
.nav__link--cta.active { background: var(--primary-dk) !important; }

/* ── Auth zone ── */
.header__auth {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  margin-left: 12px;
}

/* Guest buttons */
.btn-auth {
  padding: 7px 16px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  font-family: var(--font-body);
  transition: var(--transition);
  border: 1.5px solid transparent;
  white-space: nowrap;
}
.btn-auth--outline {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}
.btn-auth--outline:hover { background: var(--primary-lt); }
.btn-auth--filled {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
.btn-auth--filled:hover { background: var(--primary-dk); border-color: var(--primary-dk); }

/* User dropdown */
.auth-user { position: relative; }
.user-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--primary-lt);
  border: 1.5px solid var(--border);
  border-radius: 50px;
  padding: 5px 12px 5px 10px;
  cursor: pointer;
  font-family: var(--font-body);
  transition: var(--transition);
}
.user-btn:hover { border-color: var(--primary); }
/* Phone icon thay avatar */
.user-phone-icon {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-size: 0.75rem;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.user-name {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--dark);
  max-width: 100px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.user-caret {
  font-size: 0.65rem;
  color: var(--mid);
  transition: transform var(--transition);
}
.auth-user.open .user-caret { transform: rotate(180deg); }

/* Dropdown menu */
.user-dropdown {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  min-width: 210px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 8px 32px rgba(0,0,0,0.12);
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-8px);
  transition: opacity 0.2s ease, transform 0.2s ease;
  z-index: 200;
}
.auth-user.open .user-dropdown {
  opacity: 1;
  pointer-events: all;
  transform: translateY(0);
}
.user-dropdown__info {
  padding: 14px 16px;
  background: var(--primary-lt);
}
.user-dropdown__name  { display: block; font-weight: 700; font-size: 0.9rem; color: var(--dark); }
.user-dropdown__phone {
  display: flex; align-items: center; gap: 6px;
  font-size: 0.8rem; color: var(--primary); margin-top: 3px; font-weight: 600;
}
.user-dropdown__email { display: block; font-size: 0.78rem; color: var(--mid); margin-top: 2px; }
.user-dropdown__divider { border: none; border-top: 1px solid var(--border); margin: 0; }
.user-dropdown__item {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 11px 16px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--dark);
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--font-body);
  transition: background var(--transition);
  text-align: left;
}
.user-dropdown__item:hover { background: var(--light); }
.user-dropdown__item--danger { color: #dc3545; }
.user-dropdown__item--danger:hover { background: #fff5f5; }

/* ── Mobile toggle ── */
.nav__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 34px;
  height: 34px;
  background: none;
  border: none;
  cursor: pointer;
  margin-left: 8px;
  padding: 4px;
  flex-shrink: 0;
}
.nav__toggle span {
  display: block;
  height: 2px;
  background: var(--dark);
  border-radius: 2px;
  transition: var(--transition);
  transform-origin: center;
}
/* Animate to X */
.nav__toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav__toggle.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav__toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ── Responsive ── */
@media (max-width: 1024px) {
  .nav { margin: 0 8px; gap: 0; }
  .nav__link { padding: 7px 9px; font-size: 0.83rem; }
}

@media (max-width: 820px) {
  .nav {
    display: none;
    position: fixed;
    top: 70px; left: 0; right: 0;
    background: #fff;
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: stretch;
    padding: 12px 16px 16px;
    gap: 4px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.08);
    z-index: 999;
  }
  .nav.open { display: flex; }
  .nav__link {
    padding: 13px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    border-bottom: 1px solid var(--border);
  }
  .nav__link:last-child { border-bottom: none; }
  .nav__link--cta {
    margin: 6px 0 0;
    text-align: center;
    border-bottom: none !important;
  }
  .nav__toggle { display: flex; }
  /* Hide auth text labels on small screens, keep buttons */
  .btn-auth { padding: 6px 12px; font-size: 0.78rem; }
  .user-name { display: none; }
  .header__auth { margin-left: 8px; }
}

@media (max-width: 480px) {
  .header__auth { gap: 5px; }
  .btn-auth--outline { display: none; } /* hide login, keep register */
}