:root {
  --bg: #0f0f10;
  --panel: #19191b;
  --gold: #d4af37;
  --text: #e0e0e0;
  --muted: #888;
}

body {
  background: var(--bg);
  color: var(--text);
  margin: 0;
  font-family: "Inter", system-ui, sans-serif;
  height: 100vh;
  overflow: hidden;
}

#app {
  display: grid;
  grid-template-columns: 320px 1fr;
  height: 100%;
}

.sidebar {
  background: var(--panel);
  overflow-y: auto;
  border-right: 1px solid var(--gold);
  padding: 0.5em 1em;
}

h1 {
  color: var(--gold);
  font-size: 1.4em;
  margin: 0.5em 0;
}

.controls {
  display: flex;
  flex-direction: column;
  gap: 0.5em;
  font-size: 0.9em;
}

select {
  background: #000;
  color: var(--gold);
  border: 1px solid var(--gold);
  border-radius: 4px;
}

nav {
  margin-top: 1em;
  line-height: 1.6;
}

.file, .dir {
  display: block;
  padding: 2px 4px;
  border-radius: 4px;
  cursor: pointer;
  text-decoration: none;
  color: var(--text);
}

.file.active, .file:hover, .dir:hover {
  background: rgba(212,175,55,0.15);
}

.pin {
  font-weight: bold;
  color: var(--gold);
}

.content {
  overflow-y: auto;
  position: relative;
}

.viewer {
  padding: 1.5em;
  max-width: 700px;
  margin: 0 auto;
}

#meta {
  color: var(--muted);
  font-size: 0.9em;
  margin-bottom: 1em;
}

iframe, .md {
  width: 100%;
  border: none;
  background: transparent;
  color: var(--text);
}

.md pre, .md code {
  background: #111;
  padding: 0.5em;
  border-radius: 4px;
  overflow-x: auto;
  color: var(--gold);
}

/* --- Mobile Drawer --- */
.nav-toggle {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 2000;
  background: var(--panel);
  color: var(--gold);
  border: 1px solid var(--gold);
  border-radius: 8px;
  padding: 6px 10px;
  font-size: 20px;
  display: none;
}

@media (max-width: 900px) {
  #app {
    grid-template-columns: 1fr;
  }
  .nav-toggle {
    display: block;
  }
  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: 80%;
    max-width: 340px;
    height: 100%;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    z-index: 1500;
  }
  .sidebar.open {
    transform: translateX(0);
  }
  .content {
    margin-left: 0;
    overflow-y: auto;
  }
}