/* ======== RESET ======== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* ======== HEADER WRAPPER ======== */
.site-header {
  background: #f9f9f9;          /* soft off-white */
  border-bottom: 1px solid #eaeaea;
  /* ⬇️  delete these three lines to let the header scroll off-screen */
  /* position: sticky;                                              */
  /* top: 0;                                                        */
  /* z-index: 100;                                                  */
}

/* ======== FLEX LAYOUT ======== */
.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* ======== LOGO ======== */
.logo img {
  display: block;
  max-height: 44px;
  width: auto;
}

/* ======== SIGN-IN BUTTON ======== */
.btn-login {
  font: 500 1rem 'Segoe UI', sans-serif;
  color: #fff;
  background: #000;
  border: 1px solid #000;
  padding: 0.5rem 1.25rem;
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}
.btn-login:hover {
  background: #333;
  color: #fff;
}

/* ======== MOBILE BREAKPOINT ======== */
@media (max-width: 600px) {
  .header-inner {
    flex-direction: column;
    gap: 0.75rem;
  }
  .btn-login {
    width: 100%;
    text-align: center;
  }
}