:root {
  --color-bg: #001f3f;         /* Navy blue background */
  --color-panel: #002b55;      /* Darker accent for panels */
  --color-text: #FFFFFF;       /* Light text */
  --color-hover: #004080;      /* Hover accent */
  --color-active: #0059b3;     /* Active item accent */
  --color-border: #003366;     /* Borders */
}

/* Global Reset */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* Body */
body {
  font-family: sans-serif;
  background-color: var(--color-bg);
  color: var(--color-text);
  display: flex;
  min-height: 100vh;
  flex-direction: column;
}

/* Main Container */
.container {
  display: flex;
  flex-grow: 1;
  overflow: hidden;
}

/* ---------------- Controls Panel ---------------- */
.controls-panel {
  background-color: var(--color-panel);
  color: var(--color-text);
  padding: 20px;
  display: flex;
  flex-direction: column;
  width: 300px; /* default, overridden in landscape */
  border-right: 1px solid var(--color-border);
}

.controls-panel h2 {
  font-size: 1.5rem;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 0.5rem;
  margin-bottom: 1rem;
}

.controls-panel select,
.controls-panel input[type="search"] {
  background: var(--color-bg);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 0.5rem;
  margin-bottom: 1rem;
}

.filter-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: 1rem;
}

.filter-controls label {
  margin-right: 0.5rem;
  font-size: 0.9rem;
}

.filter-controls select,
.filter-controls input[type="checkbox"] {
  margin-right: 1rem;
}

.media-list-info {
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
}

/* ---------------- Media List ---------------- */
#mediaList {
  list-style: none;
  overflow-y: auto;
  flex-grow: 1; /* in landscape */
}

#mediaList li {
  padding: 0.75rem;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
}

#mediaList li:hover {
  background-color: var(--color-hover);
}

#mediaList li.active {
  background-color: var(--color-active);
}

/* Allow filenames to wrap */
.file-name {
  flex-grow: 1;
  white-space: normal;
  word-wrap: break-word;
  word-break: break-word;
  overflow: visible;
}

.file-type {
  margin-left: 0.5rem;
  font-size: 0.85rem;
  text-transform: capitalize;
}

/* ---------------- Media Viewer ---------------- */
.canvas-area {
  background-color: #ffffff;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-grow: 1; /* in landscape */
}

.media-player-placeholder {
  color: #888;
  font-style: italic;
  text-align: center;
  padding: 1rem;
  width: 100%;
  height: 100%;
}

#mediaPlayer {
  width: 100%;
  height: 100%;
  padding: 0.5rem;
}

#mediaPlayer audio,
#mediaPlayer video,
#mediaPlayer iframe {
  width: 100%;
  height: 100%;
  max-width: 100%;
  max-height: 100%;
}

/* ---------------- Orientation Queries ---------------- */
@media (orientation: landscape) {
  /* Sidebar 30%, main viewer 70% */
  .container {
    flex-direction: row;
    height: 100vh;
  }
  .controls-panel {
    width: 30%;
    max-width: 400px;
    min-width: 200px;
    height: 100%;
  }
  #mediaList {
    flex-grow: 1;
  }
  .canvas-area {
    width: 70%;
  }
}

@media (orientation: portrait) {
  /* Stacked: controls → list (30vh) → viewer */
  .container {
    flex-direction: column;
    height: 100vh;
  }
  .controls-panel {
    width: 100%;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--color-border);
  }
  #mediaList {
    height: 30vh;
    overflow-y: auto;
    flex-grow: 0;
  }
  .canvas-area {
    flex-grow: 1;
    height: auto;
  }
}