/******* BASE STYLES *******/
body {
  margin: 0;
  font-family: Arial, sans-serif;
  background-color: #000; /* prevents white showing in any tiny gaps */
}

/* Prevent sideways + vertical "play" caused by mobile viewport changes */
html, body {
  width: 100%;
  height: 100%;
  overflow-x: hidden;
  background: #000;
}

*, *::before, *::after {
  box-sizing: border-box;
}

/* IMPORTANT: avoid default body scroll bounce in fullscreen slideshow */
body {
  overflow-y: hidden;
}

.container {
  max-width: 100%;
  margin: 0 auto;
  padding: 10px;
  box-sizing: border-box;
}

.labelSlideshowControls {
  display: none;
}

/******* NAVBAR CORE *******/
.navbar {
  background-color: #333;
  display: flex;
  align-items: center;
  padding: 0 15px;
  min-height: 50px;
  gap: 20px;
  box-sizing: border-box;
  color: white;
}

.navbar a {
  color: white;
  text-decoration: none;
  font-size: 15px;
  display: flex;
  align-items: center;
  flex-shrink: 0;
  padding: 5px 12px;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.navbar a:hover {
  background-color: #0000ff !important;
  color: #ffffff !important;
  border-color: #0000ff !important;
}

/******* CATEGORY COMBOBOX (SLIM & WHITE TEXT) *******/
.category-wrapper {
  display: flex;
  align-items: center;
  gap: 8px;
}

.category-label {
  color: white !important;
  font-size: 14px;
  white-space: nowrap;
}

#category-select {
  background-color: #444;
  color: white;
  border: 1px solid #666;
  border-radius: 4px;
  height: 28px;
  padding: 0 25px 0 8px;
  font-size: 14px;
  cursor: pointer;
  outline: none;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A//www.w3.org/2000/svg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%23FFFFFF%22%20d%3D%22M287%2069.4a17.6%2017.6%200%200%200-13-5.4H18.4c-5%200-9.3%201.8-12.9%205.4A17.6%2017.6%200%200%200%200%2082.2c0%205%201.8%209.3%205.4%2012.9l128%20127.9c3.6%203.6%207.8%205.4%2012.8%205.4s9.2-1.8%2012.8-5.4L287%2095c3.5-3.5%205.4-7.8%205.4-12.8%200-5-1.9-9.2-5.5-12.8z%22/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 8px center;
  background-size: 10px auto;
  line-height: 28px;
}

#category-select option {
  background-color: #333;
  color: white;
}

/******* AUTOPLAY TOGGLE *******/
.autoplay-container {
  display: flex;
  align-items: center;
  gap: 10px;
  white-space: nowrap;
  font-size: 14px;
  color: white;
}

.switch {
  position: relative;
  display: inline-block;
  width: 40px;
  height: 20px;
  flex-shrink: 0;
}

.switch input { opacity: 0; width: 0; height: 0; }

.slider-switch {
  position: absolute;
  cursor: pointer;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: #666;
  transition: .4s;
  border-radius: 20px;
}

.slider-switch:before {
  position: absolute;
  content: "";
  height: 14px; width: 14px;
  left: 3px; bottom: 3px;
  background-color: white;
  transition: .4s;
  border-radius: 50%;
}

input:checked + .slider-switch { background-color: #0000ff; }
input:checked + .slider-switch:before { transform: translateX(20px); }

/******* DOWNLOAD & INFO *******/
#current-image-url-container {
  flex-grow: 1;
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 15px;
  overflow: hidden;
}

#current-image-url {
  color: white;
  font-size: 14px;
  white-space: nowrap;
}

.download-button {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: white;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  padding: 6px 16px;
  border-radius: 4px;
  min-width: 70px;
  transition: all 0.2s ease;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.download-button:hover {
  background: #000080;
  border-color: #000080;
}

/******* SLIDER/IMAGE STYLES *******/
.slider-container {
  position: relative;
  width: 100%;

  /* Desktop uses classic vh */
  height: calc(100vh - 120px);

  overflow: hidden;
  background-color: #000;

  display: flex;
  align-items: center;
  justify-content: center;

  /* Prevent scroll chaining/bounce originating from the slider */
  overscroll-behavior: none;
  touch-action: pan-x; /* blocks vertical dragging on the slider area */
}

.slide {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 0.5s ease-in-out;
  display: flex;
  align-items: center;
  justify-content: center;

  overscroll-behavior: none;
}

.slide.active { opacity: 1; }

.slide img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  filter: drop-shadow(0px 10px 20px rgba(0, 0, 0, 0.5));
}

.arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 40px; height: 40px;
  background-color: rgba(0, 0, 0, 0.5);
  color: white;
  font-size: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border-radius: 50%;
  opacity: 0;
  z-index: 2;
  transition: opacity 0.3s, background-color 0.3s;
}

.slider-container:hover .arrow { opacity: 1; }
.arrow:hover { background-color: #0000ff; }
.arrow-prev { left: 10px; }
.arrow-next { right: 10px; }

/******* HIDES HAMBURGER BARS *******/
.navbar .icon {
  display: none;
}

/* --- MOBILE RESPONSIVE --- */
@media screen and (max-width: 850px) {

  /* Make the slideshow edge-to-edge on mobile */
  .container {
    padding: 0;
    max-width: 100%;
    width: 100%;
  }

  /*
    IMPORTANT:
    - Use svh (stable viewport height) to stop the up/down "play" when the mobile address bar expands/collapses.
    - Subtract the CLOSED navbar height only (about 50px).
    - Do NOT add extra bottom padding here - that creates empty space.
  */
  .slider-container {
    height: calc(100svh - 50px);
    min-height: calc(100svh - 50px);

    /* keep it truly fullscreen and stable */
    overflow: hidden;
    padding-bottom: 0;
    overscroll-behavior: none;
    touch-action: pan-x;
  }

  /* Hide menu items when closed */
  .navbar > *:not(.icon) {
    display: none !important;
  }

  /* Navbar Base Setup */
  .navbar {
    flex-direction: column;
    align-items: flex-start;
    padding: 0;
    position: relative;
    height: auto !important;
    min-height: 50px;
    overflow: visible !important;
    z-index: 1000;
  }

  /* Overlay menu */
  .navbar.responsive {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: auto !important;
    background-color: #333;
    display: flex !important;
    flex-direction: column;
    box-shadow: 0px 8px 16px rgba(0,0,0,0.5);
    gap: 10px;
    padding-bottom: 14px;
  }

  .navbar.responsive > *:not(.icon) {
    display: block !important;
    width: 100%;
    box-sizing: border-box;
  }

  .navbar.responsive .labelAudioControls,
  .navbar.responsive .labelSlideshowControls {
    display: flex !important;
    justify-content: flex-start !important;
    align-items: center;
    height: 44px !important;
    padding: 0 15px !important;
    width: 100%;
    background-color: orange;
    color: black;
    font-weight: bold;
    box-sizing: border-box;
    font-size: 18px;
    letter-spacing: 0.3px;
  }

  .navbar.responsive .category-wrapper,
  .navbar.responsive .autoplay-container,
  .navbar.responsive #current-image-url-container,
  .navbar.responsive a:not(.icon):not(.download-button) {
    padding-left: 15px !important;
    padding-right: 15px !important;
    box-sizing: border-box;
  }

  .navbar.responsive a:not(.icon):not(.download-button) {
    display: block !important;
    padding-top: 4px !important;
    padding-bottom: 4px !important;
  }

  .navbar.responsive .category-wrapper {
    display: flex !important;
    flex-direction: row !important;
    align-items: center !important;
    gap: 15px;
    padding-top: 4px !important;
    padding-bottom: 4px !important;
  }

  .navbar.responsive .autoplay-container {
    display: flex !important;
    flex-direction: row !important;
    align-items: center !important;
    gap: 10px;
    padding-top: 4px !important;
    padding-bottom: 4px !important;
  }

  .navbar.responsive #current-image-url-container {
    display: block !important;
    padding-top: 2px !important;
    padding-bottom: 2px !important;
  }

  .navbar.responsive .download-button {
    display: inline-block !important;
    width: auto !important;
    margin: 0 !important;
    padding: 8px 16px !important;
    border: 1px solid rgba(255, 255, 255, 0.3) !important;
    background: rgba(255, 255, 255, 0.1) !important;
    border-radius: 4px !important;
    color: white !important;
    box-sizing: border-box !important;
    cursor: pointer;
  }

  .navbar.responsive .download-button:hover {
    background: #0000ff !important;
    border-color: #0000ff !important;
  }

  .navbar .icon,
  .navbar.responsive .icon {
    display: flex !important;
    position: absolute !important;
    right: 15px !important;
    top: 0 !important;
    height: 44px !important;
    width: 44px;
    align-items: center !important;
    justify-content: center;
    z-index: 1001 !important;
    color: white;
    text-decoration: none;
    font-size: 20px !important;
    font-weight: normal;
    border-radius: 8px;
    transition:
      transform 0.12s ease,
      background-color 0.12s ease,
      color 0.12s ease;
  }

  .navbar .icon:hover,
  .navbar.responsive .icon:hover {
    background-color: rgba(255, 255, 255, 0.08) !important;
    color: #0000ff !important;
    transform: scale(1.08);
  }

  .navbar .icon:active,
  .navbar.responsive .icon:active {
    transform: scale(0.95);
    background-color: rgba(255, 255, 255, 0.12) !important;
  }

  .navbar .icon:focus-visible,
  .navbar.responsive .icon:focus-visible {
    outline: 2px solid #0000ff;
    outline-offset: 2px;
  }

  .navbar.responsive #custom-audio-player {
    padding-top: 0 !important;
  }

  .arrow {
    display: none;
  }
}