/* Full viewport layout */
html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  font-family: sans-serif;
  background-color: #0b0b0b;
  color: #fff;
}

:root{
  /* tweak these to taste */
  --header-height: 80px;       /* keep header fixed at this height */
  --logo-scale: 0.95;          /* 1.0 = logo height == header height. <1 smaller, >1 larger */
  --logo-side-space: 220px;    /* horizontal reserve for left + right areas (adjust) */
}

/* Header container */
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
  padding: 0.5rem 1rem;
  box-sizing: border-box;
  height: var(--header-height); /* fixed header height */
  z-index: 10;
  overflow: visible; /* allow small visual overflow without clipping */
}

/* Left and right button areas — keep above the logo visually */
.header-left,
.header-right {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex: 0 0 auto;
  z-index: 20; /* ensure buttons are above the logo if there's any overlap */
}

/* Centered logo (absolute so it's centered regardless of button widths) */
#logo {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: center;
  width: calc(100% - var(--logo-side-space)); /* reserve side room for buttons */
  max-width: 480px; /* extra safety cap, adjust or remove */
  pointer-events: auto; /* keep logo clickable (if it's an <a>) */
  z-index: 10; /* below .header-left/.header-right but above background */
}

/* Logo image sizing & behavior */
#logo img.logo-image {
  height: calc(var(--header-height) * var(--logo-scale)); /* scale relative to header */
  max-height: calc(var(--header-height) * 1.15); /* absolute cap (optional) */
  width: auto;
  max-width: 100%;
  display: block;
  object-fit: contain;
  filter: drop-shadow(0 0 5px magenta);
  transition: filter .2s, transform .2s;
}

/* hover effect */
#logo img.logo-image:hover {
  filter: drop-shadow(0 0 20px magenta);
  transform: scale(1.02);
}

/* Responsive: reduce header and logo sizes on smaller screens */
@media (max-width: 800px) {
  :root {
    --header-height: 70px;
    --logo-side-space: 160px;
    --logo-scale: 0.95;
  }
}
@media (max-width: 420px) {
  :root {
    --header-height: 64px;
    --logo-side-space: 120px;
    --logo-scale: 0.9;
  }
}