:root {
  --bg-dark: #0a0e14;
  --panel-bg: #121824;
  --card-bg: #1a2332;
  --border-color: #263345;
  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --color-primary: #00f0ff;
  --color-secondary: #ff9900;
  --color-accent: #39ff14;
  --color-danger: #ff4d4d;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-main);
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  user-select: none;
}

/* ---------------- ナビゲーションバー ---------------- */
.navbar {
  height: 70px;
  background-color: var(--panel-bg);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  gap: 16px;
  flex-shrink: 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand .icon {
  font-size: 28px;
}

.brand h1 {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.brand p {
  font-size: 11px;
  color: var(--text-muted);
}

.connections-bar {
  display: flex;
  align-items: center;
  gap: 16px;
}

.device-card {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--card-bg);
  padding: 8px 14px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.device-info {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
}

.device-info .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
}

.status-badge {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-muted);
}

.btn {
  background: #253346;
  color: var(--text-main);
  border: 1px solid var(--border-color);
  padding: 8px 14px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn:hover {
  background: #33445c;
}

.btn.btn-connect.connected {
  background: rgba(255, 77, 77, 0.2);
  border-color: var(--color-danger);
  color: #ff9999;
}

.btn.btn-primary {
  background: #0077aa;
  border-color: #0099dd;
}

.btn.btn-primary:hover {
  background: #0099dd;
}

.btn.btn-secondary {
  background: #222e3d;
}

.toggle-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  cursor: pointer;
}

.toggle-label input {
  cursor: pointer;
}

/* ---------------- メイン分割レイアウト ---------------- */
.main-layout {
  flex: 1;
  display: flex;
  overflow: hidden;
}

.panel {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.panel-left {
  width: 480px;
  background: var(--panel-bg);
  border-right: 1px solid var(--border-color);
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
}

.panel-right {
  flex: 1;
  background: #080c12;
  position: relative;
  overflow: hidden;
}

/* ---------------- 左側モニター & 設定 ---------------- */
.monitor-wrapper {
  height: 380px;
  display: flex;
  flex-direction: column;
  border-bottom: 1px solid var(--border-color);
  background: #06090e;
}

.monitor-header {
  padding: 10px 16px;
  background: rgba(255, 255, 255, 0.02);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.monitor-header h3 {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
}

.monitor-header .hint {
  font-size: 10px;
  color: #64748b;
}

.canvas-container {
  flex: 1;
  position: relative;
}

#monitor-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.settings-scroll {
  flex: 1;
  overflow-y: auto;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.settings-group {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
}

.settings-group summary {
  padding: 10px 14px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  background: rgba(255, 255, 255, 0.02);
}

.settings-group summary:hover {
  background: rgba(255, 255, 255, 0.05);
}

.settings-content {
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.control-row {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.control-row label {
  font-size: 11px;
  color: var(--text-muted);
  display: flex;
  justify-content: space-between;
}

.control-row input[type="range"] {
  width: 100%;
  accent-color: var(--color-primary);
  cursor: pointer;
}

.grid-2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.desc {
  font-size: 11px;
  color: var(--text-muted);
  line-height: 1.4;
}

.btn-group {
  display: flex;
  gap: 8px;
}

.status-row {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-muted);
}

/* ---------------- 右側 UIデモ画面 ---------------- */
.ui-demo-container {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.demo-header {
  height: 56px;
  background: #111723;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
}

.demo-tabs {
  display: flex;
  gap: 8px;
}

.tab-btn {
  background: transparent;
  color: var(--text-muted);
  border: none;
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.tab-btn:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.05);
}

.tab-btn.active {
  color: #ffffff;
  background: #253346;
}

.demo-status {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-accent);
}

.demo-body {
  flex: 1;
  position: relative;
  overflow: hidden;
}

#ui-canvas {
  width: 100%;
  height: 100%;
  display: block;
}