:root {
  color-scheme: light;
  --bg: #f7f8fa;
  --surface: #ffffff;
  --surface-2: #f0f4f7;
  --line: #d7dde3;
  --text: #182027;
  --muted: #637083;
  --accent: #176a63;
  --accent-2: #e9f7f4;
  --warning: #a85c00;
  --warning-bg: #fff4df;
  --danger: #9f2626;
  --debug: #3356a5;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.45 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button,
input,
textarea {
  font: inherit;
}

button {
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  min-height: 38px;
  padding: 8px 12px;
}

button:hover {
  border-color: var(--accent);
}

button:focus-visible,
input:focus-visible,
textarea:focus-visible,
summary:focus-visible {
  outline: 3px solid rgba(23, 106, 99, 0.28);
  outline-offset: 2px;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.hidden {
  display: none !important;
}

.topbar {
  align-items: center;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
  display: flex;
  height: 56px;
  justify-content: space-between;
  padding: 0 16px;
}

.muted {
  color: var(--muted);
  margin-left: 8px;
}

.topbar-actions {
  align-items: center;
  display: flex;
  gap: 8px;
}

.badge {
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  padding: 4px 10px;
}

.icon-btn {
  align-items: center;
  display: inline-flex;
  font-size: 18px;
  justify-content: center;
  padding: 0;
  width: 38px;
}

.login-view {
  display: grid;
  min-height: calc(100vh - 56px);
  place-items: center;
  padding: 16px;
}

.login-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  max-width: 420px;
  padding: 20px;
  width: 100%;
}

.login-card h1 {
  font-size: 22px;
  margin: 0 0 16px;
}

.stack {
  display: grid;
  gap: 10px;
}

input,
textarea {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 10px 12px;
  width: 100%;
}

textarea {
  min-height: 48px;
  resize: vertical;
}

.secondary {
  margin-top: 10px;
  width: 100%;
}

.workspace {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr) minmax(340px, 420px);
  height: calc(100vh - 56px);
}

.sessions-panel,
.chat-panel,
.result-panel {
  min-height: 0;
}

.sessions-panel {
  background: var(--surface);
  border-right: 1px solid var(--line);
  overflow: auto;
  padding: 12px;
}

.panel-title {
  color: var(--muted);
  font-size: 13px;
  margin-bottom: 8px;
}

.session-item {
  background: transparent;
  border: 1px solid transparent;
  border-radius: 6px;
  color: var(--text);
  cursor: pointer;
  display: block;
  margin-bottom: 6px;
  padding: 8px;
  text-align: left;
  width: 100%;
}

.session-item.active,
.session-item:hover {
  background: var(--accent-2);
  border-color: #b4dcd5;
}

.chat-panel {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  padding: 12px;
}

.quick-actions {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 8px;
}

.messages {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: auto;
  padding: 12px;
}

.empty-state {
  color: var(--muted);
}

.message {
  border-radius: 8px;
  margin: 0 0 10px;
  max-width: 86%;
  padding: 10px 12px;
  white-space: pre-wrap;
}

.message.user {
  background: var(--accent);
  color: white;
  margin-left: auto;
}

.message.assistant {
  background: var(--surface-2);
}

.message-form {
  display: grid;
  gap: 8px;
  grid-template-columns: minmax(0, 1fr) 46px;
  padding-top: 10px;
}

.message-form button {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
  font-size: 18px;
}

.result-panel {
  background: var(--surface);
  border-left: 1px solid var(--line);
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  overflow: hidden;
  min-width: 0;
}

.tabs {
  border-bottom: 1px solid var(--line);
  display: flex;
  overflow-x: auto;
}

.tab {
  border: 0;
  border-bottom: 3px solid transparent;
  border-radius: 0;
  min-width: 82px;
}

.tab.active {
  border-bottom-color: var(--accent);
  color: var(--accent);
}

.tab-content {
  overflow: auto;
  padding: 14px;
  min-width: 0;
}

.draft-status {
  background: var(--warning-bg);
  border: 1px solid #f3c887;
  border-radius: 999px;
  color: var(--warning);
  display: inline-block;
  font-size: 13px;
  margin: 6px 0 12px;
  padding: 4px 10px;
}

.warning-list {
  background: var(--warning-bg);
  border: 1px solid #f3c887;
  border-radius: 8px;
  color: var(--warning);
  margin-bottom: 12px;
  padding: 10px;
}

.status-list {
  display: grid;
  gap: 8px;
}

.status-item {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 8px;
}

pre {
  background: #111827;
  border-radius: 8px;
  color: #e5e7eb;
  max-width: 100%;
  overflow: auto;
  padding: 12px;
  white-space: pre-wrap;
  word-break: break-word;
}

.copy-row {
  display: flex;
  gap: 8px;
  margin: 0 0 12px;
}

.inspector-layer {
  border: 1px solid var(--line);
  border-radius: 6px;
  margin-bottom: 8px;
}

.inspector-layer summary {
  cursor: pointer;
  padding: 8px;
}

.inspector-layer pre {
  border-radius: 0 0 6px 6px;
  margin: 0;
}

.toast {
  background: var(--text);
  border-radius: 6px;
  bottom: 16px;
  color: white;
  left: 50%;
  padding: 10px 14px;
  position: fixed;
  transform: translateX(-50%);
}

@media (max-width: 980px) {
  .workspace {
    grid-template-columns: 1fr;
    height: auto;
    min-height: calc(100vh - 56px);
  }

  .sessions-panel {
    border-bottom: 1px solid var(--line);
    border-right: 0;
    max-height: 160px;
  }

  .chat-panel {
    min-height: 520px;
  }

  .result-panel {
    border-left: 0;
    border-top: 1px solid var(--line);
    min-height: 420px;
  }

  .message {
    max-width: 96%;
  }
}