:root {
  --bg: #16171b;
  --surface: #1e1f24;
  --surface-2: #26282e;
  --border: #33363d;
  --text: #e8eaed;
  --muted: #9aa0a6;
  --accent: #4fc3f7;
  --ok: #66bb6a;
  --err: #ef5350;
  --warn: #ffa726;
  --mono: ui-monospace, SFMono-Regular, Consolas, monospace;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: var(--bg); color: var(--text); font: 14px/1.4 system-ui, sans-serif; }
button, input, select, textarea { font: inherit; color: inherit; }
button { background: var(--surface-2); border: 1px solid var(--border); border-radius: 4px; padding: 4px 10px; cursor: pointer; }
button:hover:not(:disabled) { border-color: var(--accent); }
button:disabled { opacity: 0.5; cursor: not-allowed; }
button:focus-visible, a:focus-visible, select:focus-visible, input:focus-visible, textarea:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
input, select, textarea { background: var(--surface); border: 1px solid var(--border); border-radius: 4px; padding: 4px 6px; }
a { color: var(--accent); }
h2 { font-size: 12px; text-transform: uppercase; letter-spacing: 0.05em; color: var(--muted); margin: 14px 0 6px; }
label { display: block; color: var(--muted); font-size: 12px; margin-top: 6px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

.topbar { display: flex; align-items: center; gap: 12px; padding: 8px 14px; border-bottom: 1px solid var(--border); background: var(--surface); }
.title { font-size: 16px; margin: 0; }
.badge { font: 12px var(--mono); padding: 2px 8px; border-radius: 10px; background: var(--surface-2); border: 1px solid var(--border); }
.spacer { margin-left: auto; }

.login { max-width: 340px; margin: 12vh auto 0; padding: 20px 22px; background: var(--surface); border: 1px solid var(--border); border-radius: 6px; }
.login h1 { font-size: 18px; margin: 0 0 8px; }
.login input { width: 100%; }
.login button { margin-top: 14px; width: 100%; }
.login-error { min-height: 1.4em; margin: 10px 0 0; color: var(--err); font-size: 13px; }

.banner { display: flex; gap: 10px; align-items: center; padding: 8px 14px; background: #4a1f1f; color: #ffdede; border-bottom: 1px solid var(--err); }
.banner[hidden] { display: none; }
.banner-close { margin-left: auto; }

.layout { display: grid; grid-template-columns: 260px minmax(0, 1fr) minmax(380px, 40%); height: calc(100% - 45px); }
.col { min-height: 0; overflow: auto; padding: 10px; border-right: 1px solid var(--border); }
.left select, .left input { width: 100%; }
.new-project { border: 1px solid var(--border); border-radius: 4px; margin: 10px 0 0; padding: 6px 8px 8px; }
.new-project button { margin-top: 8px; width: 100%; }

.versions, .files { list-style: none; margin: 0; padding: 0; }
.version { display: grid; grid-template-columns: auto 1fr auto; gap: 2px 6px; padding: 6px; border: 1px solid var(--border); border-radius: 4px; margin-bottom: 4px; }
.version.is-head { border-color: var(--accent); }
.version-seq { font: 12px var(--mono); color: var(--muted); }
.version-summary { overflow-wrap: anywhere; }
.version-meta { grid-column: 1 / -1; color: var(--muted); font-size: 11px; }
.version-head { color: var(--accent); font-size: 11px; }
.files button { width: 100%; text-align: left; font-family: var(--mono); font-size: 12px; margin-bottom: 2px; }
.files button.is-open { border-color: var(--accent); }

.center { display: flex; flex-direction: column; gap: 6px; }
.code-head { display: flex; align-items: center; gap: 8px; }
.code-path { font-family: var(--mono); color: var(--muted); flex: 1; }
.code { flex: 1; min-height: 300px; resize: none; font: 12px/1.45 var(--mono); tab-size: 2; white-space: pre; }
.code[readonly] { opacity: 0.75; }
.build-status { font: 12px var(--mono); min-height: 1.4em; overflow-wrap: anywhere; }
.build-status.is-ok { color: var(--ok); }
.build-status.is-err { color: var(--err); }

.right { display: flex; flex-direction: column; gap: 8px; border-right: 0; }
.agent-log { flex: 1 1 40%; min-height: 160px; overflow: auto; background: var(--surface); border: 1px solid var(--border); border-radius: 4px; padding: 6px; font-size: 12px; }
.ev { padding: 3px 4px; border-bottom: 1px solid var(--surface-2); overflow-wrap: anywhere; }
.ev-turn_start { color: var(--accent); margin-top: 6px; }
.ev-assistant_text { white-space: pre-wrap; }
.ev-tool_call { font-family: var(--mono); }
.ev-tool_result summary { cursor: pointer; font-family: var(--mono); }
.ev-tool_result pre { white-space: pre-wrap; margin: 4px 0 0; font-size: 11px; color: var(--muted); }
.ev-tool_result.is-err summary { color: var(--err); }
.ev-usage { color: var(--muted); font: 11px var(--mono); }
.ev-snapshot, .ev-turn_end.is-ok { color: var(--ok); }
.ev-turn_end.is-failed { color: var(--err); }
.ev-turn_end.is-noop { color: var(--warn); }
.chat-row { display: flex; gap: 6px; }
.chat-input { flex: 1; min-height: 56px; resize: vertical; }

.preview { display: flex; flex-direction: column; gap: 4px; flex: 1 1 50%; min-height: 280px; }
.preview-bar { display: flex; align-items: center; gap: 10px; font-size: 12px; }
.preview-frame { flex: 1; width: 100%; min-height: 260px; border: 1px solid var(--border); border-radius: 4px; background: #000; }