:root{
  --header-h: 48px;
  --sidebar-w: 120px;

  --bg: #000;
  --panel: #000;
  --fg: #00c000;
  --muted: #00a000;
  --border: #0f3d0f;

  --gap: 8px;
  --pad: 8px;

  --bar-h: 30px; /* status bar + command bar height */
}

/* Light theme */
.theme-light{
  --bg: #f6f6f6;
  --panel: #ffffff;
  --fg: #111;
  --muted: #444;
  --border: #ddd;
}

*{ box-sizing:border-box; }

html, body{
  height:100%;
  margin:0;
  font-family: Consolas, "Courier New", monospace;
  font-size: 12px;
  background: var(--bg);
  color: var(--fg);
}

a{ color: inherit; text-decoration:none; }
a:hover{ text-decoration:underline; }

.app{
  height: 100%;
  display: grid;
  grid-template-rows: var(--header-h) 1fr;
}

/* Header */
.header{
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  height: var(--header-h);
  border-bottom: 1px solid var(--border);
  padding: 0 10px;
  background: var(--panel);
}

.header .left{
  display: flex;
  align-items: center;
  gap: 8px;
}

.header .right{
  justify-self: end;
  display: flex;
  gap: 8px;
}

.brandlink{
  font-weight: 700;
  padding: 4px 8px;
}

/* Top menu aligned with where terminal starts (desktop) */
#topmenu{
  position: absolute;
  left: calc(var(--pad) + var(--sidebar-w) + var(--gap));
  top: 0;
  height: var(--header-h);
  display: flex;
  align-items: center;
  gap: 12px;
  white-space: nowrap;
  z-index: 30; /* above content */
}

/* Topmenu items */
#topmenu .top-item,
#topmenu .top-group-title{
  display: inline-block;
  padding: 2px 6px;
  text-decoration: none;
  border: 1px solid transparent;
}

#topmenu .top-item:hover,
#topmenu .top-group-title:hover{
  border-color: var(--border);
  text-decoration: none;
}

/* Dropdown group */
#topmenu .top-group{
  position: relative;
}

/* Dropdown panel (desktop) */
#topmenu .top-children{
  display: none;
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  min-width: 170px;
  background: var(--panel);
  border: 1px solid var(--border);
  padding: 6px;
  z-index: 60;
}

/* Open state */
#topmenu .top-group.open .top-children{
  display: block;
}

#topmenu .top-child{
  display: block;
  padding: 4px 6px;
  border: 1px solid transparent;
  text-decoration: none;
}

#topmenu .top-child:hover{
  border-color: var(--border);
  text-decoration: none;
}

.btn{
  border: 1px solid var(--border);
  background: transparent;
  color: var(--fg);
  font-family: inherit;
  font-size: inherit;
  padding: 4px 8px;
  cursor: pointer;
}

.btn:active{ transform: translateY(1px); }

/* Body layout */
.body{
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  gap: var(--gap);
  padding: var(--pad);
  height: calc(100vh - var(--header-h));
  min-height: 0;
}

/* Sidebar */
.sidebar{
  border: 1px solid var(--border);
  background: var(--panel);
  display: grid;
  grid-template-rows: 1fr auto;
  min-height: 0;
}

.menu{
  padding: 3px;
  overflow: auto;
}

.menu .item,
.menu .group-title{
  display: block;
  padding: 2px 4px;
  line-height: 0.75;
  border: 1px solid transparent;
}

.menu .item:hover,
.menu .group-title:hover{
  border-color: var(--border);
  text-decoration: none;
}

.menu .group-title{
  cursor: pointer;
}

.menu .group{
  position: relative;
}

.menu .group .children{
  display: none;
  padding-left: 10px;
}

/* CLICK TO TOGGLE (no hover) */
.menu .group.open .children{
  display: block;
}

/* Status bar */
.statusbar{
  border-top: 1px solid var(--border);
  height: var(--bar-h);
  padding: 0 8px;
  color: var(--muted);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  white-space: nowrap;
  line-height: 1;
}

/* Content */
.content{
  min-width: 0;
  min-height: 0;
  background: transparent;
}

/* Terminal */
.term{
  height: 100%;
  display: grid;
  grid-template-rows: 1fr auto;
  gap: 0;
  min-height: 0;
  border: 1px solid var(--border);
  background: var(--panel);
}

.term-output{
  border: none;
  border-bottom: 1px solid var(--border);
  padding: 6px;
  overflow: auto;
  white-space: pre;
  line-height: 1.25;
}

/* command input bar */
.term-inputbar{
  border: none;
  height: var(--bar-h);
  padding: 0 6px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 8px;
  align-items: center;
  line-height: 1;
}

.prompt{
  color: var(--muted);
  white-space: nowrap;
}

.cmd{
  width: 100%;
  height: 100%;
  border: none;
  outline: none;
  background: transparent;
  color: var(--fg);
  font-family: inherit;
  font-size: inherit;
}

/* -----------------------
   Settings dropdown UI
   ----------------------- */
#settingsPanel{
  display: none;
  position: absolute;
  right: 10px;
  top: var(--header-h);
  background: var(--panel);
  border: 1px solid var(--border);
  padding: 6px;
  min-width: 260px;
  z-index: 100;
}

#settingsPanel.open{ display: block; }

.settings-title{
  font-weight: 700;
  margin-bottom: 4px;
}

.settings-item{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 2px 0;
  line-height: 1;
}

.settings-item label{
  white-space: nowrap;
}

.settings-item input[type="text"],
.settings-item input[type="number"],
.settings-item select{
  width: 120px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--fg);
  font-family: inherit;
  font-size: inherit;
  padding: 2px 4px;
  outline: none;
}

/* Responsive */
@media (max-width: 900px){
  .body{ grid-template-columns: 1fr; }

  /* Make topmenu not overlap brand */
  #topmenu{
    position: static;
    height: var(--header-h);
    overflow-x: auto;
    overflow-y: visible;
    padding: 0 6px;
    gap: 10px;
  }

  /* Dropdown becomes a full-width overlay panel on small screens */
  #topmenu .top-children{
    position: fixed;
    left: var(--pad);
    right: var(--pad);
    top: var(--header-h);
    min-width: 0;
    z-index: 80;
  }

  /* Settings dropdown full width on phones */
  #settingsPanel{
    left: 0;
    right: 0;
    width: auto;
    min-width: 0;
  }

  .sidebar{
    position: absolute;
    top: calc(var(--header-h) + var(--pad));
    left: var(--pad);
    width: var(--sidebar-w);
    height: calc(100vh - var(--header-h) - (var(--pad) * 2));
    transform: translateX(calc(-100% - var(--pad)));
    transition: transform .12s linear;
    z-index: 20;
  }
  .sidebar.open{ transform: translateX(0); }
}