:root {
  --bg: #0b0f14;
  --panel: #131a22;
  --panel-2: #1a232d;
  --border: #263340;
  --text: #e6edf3;
  --muted: #8b98a5;
  --accent: #3b82f6;
  --danger: #ef4444;
  --ok: #22c55e;
  --warn: #f59e0b;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.45 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  -webkit-text-size-adjust: 100%;
}
[hidden] { display: none !important; }
.muted { color: var(--muted); font-size: 13px; }
.error { color: var(--danger); font-size: 13px; }

/* --- Вход --- */
.login { min-height: 100vh; display: grid; place-items: center; padding: 20px; }
.login-card {
  width: 100%; max-width: 340px; background: var(--panel); border: 1px solid var(--border);
  border-radius: 16px; padding: 24px; display: flex; flex-direction: column; gap: 12px;
}
.login-card h1 { margin: 0; font-size: 22px; }
.login-card input {
  padding: 12px 14px; border-radius: 10px; border: 1px solid var(--border);
  background: var(--panel-2); color: var(--text); font-size: 16px;
}
.login-card button, .send-btn, .stop-btn {
  padding: 12px; border: none; border-radius: 10px; background: var(--accent);
  color: white; font-size: 16px; font-weight: 600; cursor: pointer;
}

/* --- Раскладка приложения --- */
.app { display: flex; flex-direction: column; height: 100dvh; }
.topbar {
  display: flex; align-items: center; gap: 8px;
  padding: calc(8px + var(--safe-top)) 12px 8px; background: var(--panel);
  border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 10;
}
.brand { font-weight: 700; letter-spacing: .5px; font-size: 14px; }
.project-select {
  margin-left: auto; max-width: 45%; padding: 8px; border-radius: 8px;
  background: var(--panel-2); color: var(--text); border: 1px solid var(--border); font-size: 14px;
}
.icon-btn {
  background: var(--panel-2); border: 1px solid var(--border); color: var(--text);
  width: 38px; height: 38px; border-radius: 8px; font-size: 16px; cursor: pointer; flex: none;
}

/* --- Чаты (сайдбар) --- */
.sidebar {
  position: fixed; top: 0; left: 0; bottom: 0; width: 78%; max-width: 320px; z-index: 30;
  background: var(--panel); border-right: 1px solid var(--border);
  padding: calc(12px + var(--safe-top)) 12px 12px; overflow-y: auto;
  transform: translateX(0); transition: transform .2s;
}
.sidebar-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; }
.chats-list { display: flex; flex-direction: column; gap: 6px; }
.chat-item {
  padding: 10px; border-radius: 8px; background: var(--panel-2); border: 1px solid var(--border);
  cursor: pointer; font-size: 14px;
}
.chat-item .when { color: var(--muted); font-size: 11px; }
.scrim { position: fixed; inset: 0; background: rgba(0,0,0,.5); z-index: 20; }
.small { background: var(--panel-2); border: 1px solid var(--border); color: var(--text);
  border-radius: 6px; padding: 6px 8px; cursor: pointer; font-size: 13px; }

/* --- Лента диалога --- */
.chat { flex: 1; overflow-y: auto; padding: 14px; display: flex; flex-direction: column; gap: 10px; }
.msg { max-width: 92%; padding: 10px 12px; border-radius: 12px; white-space: pre-wrap; word-wrap: break-word; }
.msg.user { align-self: flex-end; background: var(--accent); color: white; border-bottom-right-radius: 4px; }
.msg.assistant { align-self: flex-start; background: var(--panel); border: 1px solid var(--border); border-bottom-left-radius: 4px; }
.msg.system-note { align-self: center; background: transparent; color: var(--muted); font-size: 12px; }

/* Активность инструментов (сворачиваемая) */
.tool { align-self: flex-start; max-width: 92%; background: var(--panel-2); border: 1px solid var(--border);
  border-radius: 10px; overflow: hidden; font-size: 13px; }
.tool summary { list-style: none; cursor: pointer; padding: 8px 10px; display: flex; gap: 8px; align-items: center; }
.tool summary::-webkit-details-marker { display: none; }
.tool .badge { font-size: 11px; padding: 1px 6px; border-radius: 6px; background: var(--border); }
.tool .badge.ok { background: rgba(34,197,94,.2); color: var(--ok); }
.tool .badge.err { background: rgba(239,68,68,.2); color: var(--danger); }
.tool pre { margin: 0; padding: 10px; background: #0a0e13; overflow-x: auto; font-size: 12px; }
.tool .diff-add { color: var(--ok); }
.tool .diff-del { color: var(--danger); }

/* --- Панель ввода --- */
.composer {
  border-top: 1px solid var(--border); background: var(--panel);
  padding: 8px 10px calc(8px + var(--safe-bottom));
}
.composer-row { display: flex; gap: 8px; align-items: flex-end; }
.composer textarea {
  flex: 1; resize: none; max-height: 140px; padding: 10px 12px; border-radius: 12px;
  border: 1px solid var(--border); background: var(--panel-2); color: var(--text); font-size: 16px;
}
.send-btn { width: 46px; height: 44px; flex: none; }
.stop-btn { background: var(--danger); width: 100%; margin-bottom: 8px; }
.usage { margin-top: 6px; text-align: center; }

/* --- Модалки --- */
.modal { position: fixed; inset: 0; background: rgba(0,0,0,.6); display: grid; place-items: center;
  z-index: 40; padding: 16px; }
.modal-card { background: var(--panel); border: 1px solid var(--border); border-radius: 14px;
  padding: 18px; width: 100%; max-width: 420px; display: flex; flex-direction: column; gap: 12px; }
.modal-title { font-weight: 700; }
.cmd { background: #0a0e13; padding: 10px; border-radius: 8px; overflow-x: auto; font-size: 13px; margin: 0;
  border: 1px solid var(--warn); }
.modal-actions { display: flex; gap: 10px; justify-content: flex-end; }
.btn-ghost { background: var(--panel-2); color: var(--text); border: 1px solid var(--border);
  padding: 10px 14px; border-radius: 10px; cursor: pointer; }
.btn-danger { background: var(--danger); color: white; border: none; padding: 10px 14px;
  border-radius: 10px; cursor: pointer; font-weight: 600; }

/* Git */
.git-card { max-width: 560px; }
.git-tabs { display: flex; gap: 6px; }
.git-tab { flex: 1; padding: 8px; background: var(--panel-2); border: 1px solid var(--border);
  color: var(--muted); border-radius: 8px; cursor: pointer; }
.git-tab.active { color: var(--text); border-color: var(--accent); }
.git-body { max-height: 50vh; overflow: auto; }
.git-body pre { background: #0a0e13; padding: 10px; border-radius: 8px; overflow-x: auto; font-size: 12px; }
.git-status-line { font-family: monospace; font-size: 13px; }
.git-status-line.m { color: var(--warn); }
.git-status-line.a { color: var(--ok); }
.git-status-line.d { color: var(--danger); }
.git-commit-input { width: 100%; padding: 10px; border-radius: 8px; background: var(--panel-2);
  color: var(--text); border: 1px solid var(--border); font-size: 15px; }

/* Desktop */
@media (min-width: 720px) {
  .msg, .tool { max-width: 680px; }
  .chat { align-items: stretch; }
  .chat > * { margin-inline: auto; width: 100%; max-width: 720px; }
}