:root {
  --bg: #0f1220;
  --panel: #171b2f;
  --text: #e6ebff;
  --accent: #6dd0ff;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: ui-sans-serif, -apple-system, sans-serif;
  color: var(--text);
  background: linear-gradient(120deg, #0f1220, #151935);
}

.app-shell {
  display: flex;
  height: 100vh;
}

.sidebar {
  width: 200px;
  min-width: 200px;
  background: var(--panel);
  border-right: 1px solid #29325a;
  display: flex;
  flex-direction: column;
  padding: 16px 0;
}

.sidebar h1 {
  font-size: 1.2rem;
  padding: 0 16px 16px;
  margin: 0;
  border-bottom: 1px solid #29325a;
}

.sidebar nav {
  display: flex;
  flex-direction: column;
  padding: 8px 0;
  flex: 1;
}

.sidebar nav button {
  display: block;
  width: 100%;
  text-align: left;
  padding: 10px 16px;
  border: none;
  border-radius: 0;
  background: transparent;
  color: var(--text);
  font-size: 0.95rem;
  cursor: pointer;
}

.sidebar nav button:hover {
  background: rgba(109, 208, 255, 0.08);
}

.sidebar nav button.active {
  background: rgba(109, 208, 255, 0.14);
  color: var(--accent);
  border-left: 3px solid var(--accent);
}

.sidebar-divider {
  height: 1px;
  background: #29325a;
  margin: 8px 16px;
}

button {
  border: 1px solid #2d3560;
  background: #1f2750;
  color: var(--text);
  padding: 8px 12px;
  border-radius: 8px;
  cursor: pointer;
}

.content {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
}

.recipe-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; }
.recipe-card, .card, .history-item { background: var(--panel); padding: 12px; border-radius: 10px; border: 1px solid #29325a; }
.diff-viewer { background: #0b0f20; padding: 12px; border-radius: 8px; overflow: auto; max-height: 260px; }
.param-form label { display: block; margin: 10px 0; }
.param-form input:not([type="checkbox"]), .param-form textarea { width: 100%; }
.status-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; }

.home-layout {
  display: flex;
  gap: 16px;
  height: 100%;
}

.home-main {
  flex: 1;
  overflow-y: auto;
}

.home-chat {
  width: 340px;
  min-width: 300px;
  display: flex;
  flex-direction: column;
  border-left: 1px solid #29325a;
  padding-left: 16px;
}