/* OpenCivil3D */
* { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --bg: #101116;
  --panel: #1b1d24;
  --panel2: #22242e;
  --border: #2e313c;
  --fg: #d6dae2;
  --muted: #8a8fa0;
  --accent: #4f8cff;
  --accent2: #66bb6a;
}
html, body { height: 100%; }
body {
  font: 13px/1.45 "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--fg);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* header */
header {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 6px 12px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  flex: 0 0 auto;
}
.logo { font-size: 16px; font-weight: 700; letter-spacing: 0.5px; }
.logo span { color: var(--accent); }
.toolbar { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.toolbar .sep { width: 1px; height: 20px; background: var(--border); margin: 0 4px; }
button {
  background: var(--panel2);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 5px 11px;
  font: inherit;
  cursor: pointer;
}
button:hover { border-color: var(--accent); }
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
button.primary:hover { filter: brightness(1.1); }
button.active { background: #b33; border-color: #d55; color: #fff; }
.tabs { display: flex; margin-left: auto; }
.tab {
  padding: 6px 18px;
  cursor: pointer;
  color: var(--muted);
  border-bottom: 2px solid transparent;
}
.tab.active { color: var(--fg); border-bottom-color: var(--accent); }

/* body layout */
.body { flex: 1 1 auto; display: flex; min-height: 0; }
aside {
  width: 250px;
  flex: 0 0 auto;
  background: var(--panel);
  border-right: 1px solid var(--border);
  overflow-y: auto;
}
.group { border-bottom: 1px solid var(--border); }
.group h3 {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--muted);
  padding: 8px 12px;
  cursor: pointer;
  user-select: none;
}
.group h3::before { content: "▾ "; }
.group.collapsed h3::before { content: "▸ "; }
.group.collapsed .content { display: none; }
.group .content { padding: 2px 12px 10px; display: flex; flex-direction: column; gap: 5px; }
.group label { display: flex; align-items: center; gap: 7px; }
.group label.sub { padding-left: 22px; color: var(--muted); }
.group label.row { justify-content: space-between; }
.group input[type="number"], .group select {
  width: 76px;
  background: var(--panel2);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 3px 6px;
  font: inherit;
}
input[type="color"] {
  width: 24px; height: 18px;
  border: 1px solid var(--border);
  border-radius: 3px;
  background: none;
  padding: 0;
  cursor: pointer;
  margin-left: auto;
}

main { flex: 1 1 auto; display: flex; flex-direction: column; min-width: 0; position: relative; }
.view { flex: 1 1 auto; display: none; min-height: 0; position: relative; }
.view.active { display: block; }
.view canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }

.statusbar {
  flex: 0 0 auto;
  display: flex;
  gap: 24px;
  padding: 4px 12px;
  background: var(--panel);
  border-top: 1px solid var(--border);
  font-family: Consolas, monospace;
  font-size: 12px;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
}
#status-coords { color: var(--fg); min-width: 320px; }
#status-hint { color: var(--accent2); }
#status-info { margin-left: auto; }

/* toast */
#toast {
  position: fixed;
  bottom: 44px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--panel2);
  border: 1px solid var(--accent);
  color: var(--fg);
  padding: 8px 18px;
  border-radius: 6px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s, transform 0.25s;
  max-width: 70%;
  z-index: 50;
}
#toast.show { opacity: 1; transform: translateX(-50%); }

/* dialogs */
#overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 40;
}
#overlay.show { display: flex; }
.dialog {
  display: none;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 18px 20px;
  min-width: 460px;
  max-width: 640px;
  max-height: 84vh;
  overflow-y: auto;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
}
.dialog.show { display: block; }
.dialog h2 { font-size: 15px; margin-bottom: 10px; }
.dialog h2 small { color: var(--muted); font-weight: 400; font-size: 12px; margin-left: 8px; }
.dialog table { width: 100%; border-collapse: collapse; margin: 10px 0; font-family: Consolas, monospace; font-size: 12px; }
.dialog th, .dialog td { text-align: left; padding: 3px 8px; border-bottom: 1px solid var(--border); }
.dialog th { color: var(--muted); font-weight: 600; }
.dialog label { display: flex; align-items: center; gap: 7px; margin: 4px 0; }
.dialog label.row { justify-content: space-between; }
.dialog select, .dialog input[type="number"], .dialog input[type="text"] {
  background: var(--panel2);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 4px 8px;
  font: inherit;
}
.dialog .cols { display: flex; gap: 28px; }
.dialog .cols > div { flex: 1; }
.dialog .actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 14px; }
.muted { color: var(--muted); font-size: 12px; }
.warn { color: #d9a24a; }