1_general_forum/docs/stylesheets/extra.css

/* === GLOBAL RESETS === */
/* Remove all default spacing that causes the white gap */
.md-main__inner {
  margin-top: 0 !important;
  padding-top: 0 !important;
}

.md-content__inner {
  margin-top: 0 !important;
  padding-top: 0 !important;
}

/* Add padding back ONLY for non-homepage content */
body:not(.has-hero) .md-content__inner {
  padding-top: 4rem !important; /* Adjust based on your header height */
}

/* === 1. HEADER: Fixed transparent to solid === */
.md-header {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  transition: all 0.3s ease;
}

/* Force transparent background when not scrolled */
.md-header:not(.scrolled) {
  background-color: transparent !important;
  backdrop-filter: none !important;
  box-shadow: none !important;
}

/* Solid background after scroll */
.md-header.scrolled {
  background-color: var(--md-primary-fg-color);
  box-shadow: var(--md-shadow-z2);
}

/* === 2. HERO BANNER: Full viewport with proper positioning === */
.hero-banner {
  /* Full viewport coverage */
  width: 100vw;
  min-height: 100vh;
  margin: 0;
  padding: 0;

  /* Reset any container constraints */
  margin-left: calc(50% - 50vw);
  margin-right: calc(50% - 50vw);
  
  /* Background setup */
  background:
    linear-gradient(to bottom, rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.2), rgba(0, 0, 0, 0)),
    url('../assets/banner1.png') no-repeat center center;
  background-size: cover;
  background-attachment: fixed; /* Optional: parallax effect */

  /* Content centering */
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;

  /* Initial state for JS animation */
  opacity: 0;
  transition: opacity 1s ease-in-out;

  /* Ensure it's behind header but above page background */
  position: relative;
  z-index: 1;

  /* Content styling */
  color: white;
  text-align: center;
  padding: 2rem;
  box-sizing: border-box;
}

/* Hero text styling */
.hero-banner h1,
.hero-banner p {
  color: white !important;
  text-shadow: 2px 2px 4px rgba(0,0,0,0.7);
  margin: 0;
  padding: 0.5rem 0;
}

/* === 3. PAGE OFFSET FIX === */
/* Remove white bar at top */
.md-header + .md-container {
  padding-top: 0 !important;
}

/* === 4. HEADER COLORS: Amber when transparent, theme colors when solid === */
/* Transparent state - Amber styling */
.md-header:not(.scrolled) .md-header__title,
.md-header:not(.scrolled) .md-header__button,
.md-header:not(.scrolled) .md-nav__link,
.md-header:not(.scrolled) .md-icon,
.md-header:not(.scrolled) .md-search__icon {
  color: #ffb300 !important;
  fill: #ffb300 !important;
}

/* Search box in transparent state */
.md-header:not(.scrolled) .md-search__form {
  background-color: rgba(255, 179, 0, 0.1) !important;
  border: 1px solid rgba(255, 179, 0, 0.3) !important;
  box-shadow: none !important;
}

.md-header:not(.scrolled) .md-search__input {
  background-color: transparent !important;
  color: #ffb300 !important;
}

.md-header:not(.scrolled) .md-search__input::placeholder {
  color: rgba(255, 179, 0, 0.7) !important;
}

/* Scrolled state - Default theme colors */
.md-header.scrolled .md-header__title,
.md-header.scrolled .md-header__button,
.md-header.scrolled .md-nav__link,
.md-header.scrolled .md-icon,
.md-header.scrolled .md-search__icon {
  color: var(--md-primary-bg-color) !important;
  fill: var(--md-primary-bg-color) !important;
}

.md-header.scrolled .md-search__form {
  background-color: var(--md-default-bg-color--light) !important;
  border: none !important;
}

.md-header.scrolled .md-search__input {
  background-color: var(--md-default-bg-color--light) !important;
  color: var(--md-default-fg-color) !important;
}

/* === 5. SIDEBAR POSITIONING === */
@media screen and (min-width: 76.25em) {
  /* Default positioning for hero pages */
  body.has-hero .md-sidebar {
    top: 0;
    height: 100vh;
  }

  /* Push sidebars down on non-hero pages */
  body:not(.has-hero) .md-sidebar {
    top: 5rem !important;
    height: calc(100vh - 5rem) !important;
  }

  /* Sidebar fade transition (managed by JS) */
  .md-sidebar--primary,
  .md-sidebar--secondary {
    transition: opacity 0.3s ease;
  }
}

/* === 6. CONTENT AFTER HERO === */
/* Ensure content after hero has proper background */
.md-content__inner > *:not(.hero-banner) {
  background-color: var(--md-default-bg-color);
  position: relative;
  z-index: 2;
}

/* === 7. MOBILE ADJUSTMENTS === */
@media screen and (max-width: 76.25em) {
  .hero-banner {
    min-height: 70vh;
  }

  body:not(.has-hero) .md-content__inner {
    padding-top: 3.5rem !important; /* Smaller header on mobile */
  }
}

/* Force inline admonitions to work on desktop */
@media screen and (min-width: 76.25em) {
  .md-typeset .admonition.inline,
  .md-typeset details.inline {
    float: right;
    margin-left: 1rem;
    margin-top: 0;
    max-width: 20rem;
  }
}