:root {
  --bg: #f6f8fb;
  --panel: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --border: #d4d9e2;
  --accent: #0f766e;
  --topbar-height: 56px;
  --app-height: 100vh;
  --keyboard-inset: 0px;
}

html,
body {
  height: 100%;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "IBM Plex Sans", "Segoe UI", Tahoma, sans-serif;
  color: var(--text);
  background: linear-gradient(160deg, #f8fbff 0%, #eef3f9 55%, #e6edf6 100%);
  overflow: hidden;
}

.app {
  height: var(--app-height);
  min-height: var(--app-height);
  padding-bottom: calc(var(--keyboard-inset) + env(safe-area-inset-bottom));
  display: flex;
  flex-direction: column;
  transition: padding-bottom 120ms ease-out;
}

.topbar {
  height: var(--topbar-height);
  flex: 0 0 auto;
  border-bottom: 1px solid var(--border);
  background: var(--panel);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  gap: 12px;
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand {
  font-weight: 700;
}

.menu-toggle {
  display: none;
  width: 36px;
  height: 36px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  color: var(--text);
  font-size: 1.1rem;
  line-height: 1;
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

.menu-toggle:focus {
  outline: 2px solid rgba(15, 118, 110, 0.2);
  border-color: var(--accent);
}

.meta {
  font-size: 0.9rem;
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px 10px;
  background: #fff;
}

.meta.state-idle {
  color: #334155;
  border-color: #cbd5e1;
}

.meta.state-connecting,
.meta.state-reconnecting {
  color: #92400e;
  border-color: #f59e0b;
  background: #fff8eb;
}

.meta.state-connected {
  color: #166534;
  border-color: #22c55e;
  background: #effcf3;
}

.meta.state-error,
.meta.state-closed {
  color: #991b1b;
  border-color: #ef4444;
  background: #fff1f2;
}

.layout {
  flex: 1;
  min-height: 0;
  display: grid;
  grid-template-columns: 28% 72%;
}

.menu-panel,
.terminal-panel {
  min-height: 0;
  padding: 16px;
}

.menu-panel {
  border-right: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.7);
  display: flex;
  flex-direction: column;
}

.terminal-panel {
  background: rgba(255, 255, 255, 0.45);
  display: flex;
  flex-direction: column;
}

.terminal-panel > #terminal-root {
  min-height: 360px;
  height: calc(var(--app-height) - 180px);
  max-height: calc(var(--app-height) - 180px);
}

.menu-panel h2,
.terminal-panel h2 {
  margin: 0 0 12px;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--accent);
}

.menu-placeholder,
.terminal-placeholder {
  border: 1px dashed var(--border);
  border-radius: 8px;
  padding: 12px;
  color: var(--muted);
  background: var(--panel);
}

.terminal-placeholder {
  height: 100%;
  min-height: 100%;
  overflow: auto;
}

.menu-tools {
  margin-bottom: 10px;
}

.push-tools {
  margin-top: 8px;
  display: grid;
  gap: 6px;
}

.push-toggle {
  height: 34px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  color: var(--text);
  font: inherit;
  cursor: pointer;
  text-align: left;
  padding: 0 10px;
}

.push-toggle:disabled {
  opacity: 0.7;
  cursor: wait;
}

.push-status {
  font-size: 0.78rem;
  color: var(--muted);
}

.menu-filter {
  width: 100%;
  height: 36px;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0 10px;
  font-size: 0.95rem;
  color: var(--text);
  background: #fff;
}

.menu-filter:focus {
  outline: 2px solid rgba(15, 118, 110, 0.2);
  border-color: var(--accent);
}

.menu-list {
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  flex: 1;
  min-height: 0;
  overflow: auto;
}

.menu-item {
  width: 100%;
  border: 0;
  border-bottom: 1px solid #eef2f8;
  background: #fff;
  color: inherit;
  text-align: left;
  padding: 8px 10px;
  cursor: pointer;
  font: inherit;
}

.menu-item:last-child {
  border-bottom: 0;
}

.menu-item:hover {
  background: #f7fbff;
}

.menu-item.selected {
  background: #e9f7f5;
}

.menu-item.group {
  font-weight: 600;
  color: #0b4f52;
}

.menu-item.session {
  font-weight: 400;
}

.menu-row {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 24px;
}

.menu-indent {
  width: calc(var(--level, 0) * 14px);
  flex: 0 0 auto;
}

.group-count {
  font-size: 0.82rem;
  color: var(--muted);
}

.session-title {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.tool-badge {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 1px 6px;
  color: var(--muted);
}

.status-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  display: inline-block;
  flex: 0 0 auto;
}

.status-running {
  background: #16a34a;
}

.status-waiting {
  background: #d97706;
}

.status-idle {
  background: #6b7280;
}

.status-error {
  background: #dc2626;
}

.menu-empty {
  padding: 14px;
  color: var(--muted);
}

.terminal-shell {
  display: flex;
  flex-direction: column;
  border: 1px solid #1d2d46;
  border-radius: 8px;
  background: #0a1220;
  color: #d9e2ec;
  height: 100%;
  min-height: 100%;
  overflow: hidden;
  touch-action: none;
}

.terminal-session {
  border-bottom: 1px solid #1d2d46;
  padding: 8px 12px;
  font-size: 0.82rem;
  color: #9bb1cc;
  background: #0f1a2e;
}

.terminal-mode-banner {
  border-bottom: 1px solid #3f2c0b;
  padding: 6px 12px;
  font-size: 0.78rem;
  letter-spacing: 0.02em;
  font-weight: 600;
  color: #f8d58f;
  background: #2a1f07;
}

.terminal-canvas {
  flex: 1;
  min-height: 0;
  padding: 8px;
  overflow: hidden;
  background: #0a1220;
  touch-action: none;
  overscroll-behavior: contain;
}

.terminal-canvas .xterm {
  height: 100%;
}

.terminal-canvas .xterm-screen {
  width: 100%;
  height: 100%;
}

.terminal-fallback {
  height: 100%;
  margin: 0;
  padding: 12px;
  overflow: auto;
  background: #0a1220;
  color: #d9e2ec;
  font-family: "IBM Plex Mono", "Menlo", "Consolas", monospace;
  font-size: 0.9rem;
  line-height: 1.35;
  white-space: pre-wrap;
}

.terminal-events {
  border-top: 1px solid #1d2d46;
  padding: 8px 12px;
  background: #101d34;
  color: #90a4c1;
  font-size: 0.75rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.menu-backdrop {
  display: none;
}

@media (max-width: 900px) {
  .menu-toggle {
    display: inline-flex;
  }

  .meta {
    font-size: 0.8rem;
    padding: 4px 8px;
  }

  .layout {
    grid-template-columns: 1fr;
    grid-template-rows: 1fr;
  }

  .menu-panel {
    position: fixed;
    top: var(--topbar-height);
    left: 0;
    bottom: 0;
    width: min(86vw, 340px);
    max-width: 340px;
    z-index: 40;
    transform: translateX(-105%);
    transition: transform 180ms ease-out;
    border-right: 1px solid var(--border);
    border-bottom: 0;
    background: #fff;
    box-shadow: 0 14px 28px rgba(15, 23, 42, 0.26);
    padding-bottom: max(16px, env(safe-area-inset-bottom));
  }

  body.menu-open .menu-panel {
    transform: translateX(0);
  }

  .menu-backdrop {
    display: block;
    position: fixed;
    top: var(--topbar-height);
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 35;
    border: 0;
    margin: 0;
    padding: 0;
    background: rgba(15, 23, 42, 0.42);
    opacity: 0;
    pointer-events: none;
    transition: opacity 180ms ease-out;
  }

  body.menu-open .menu-backdrop {
    opacity: 1;
    pointer-events: auto;
  }

  .terminal-panel {
    padding: 12px;
  }

  .terminal-panel h2 {
    display: none;
  }

  .terminal-panel > #terminal-root {
    min-height: 240px;
    height: 60vh;
    max-height: 60vh;
  }
}