:root {
  --bg: #0b0e14;
  --panel: #121722;
  --panel-2: #171d2b;
  --border: #232b3d;
  --text: #e6ebf5;
  --muted: #8a94a8;
  --accent: #d4af37;
  --accent-2: #f0d67a;
  --user: #1c2942;
  --ai: #141b28;
  --danger: #e5484d;
  --ok: #3fb950;
  --radius: 14px;
  font-synthesis: none;
}

* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  background: radial-gradient(1200px 700px at 80% -10%, #1a2233 0%, transparent 60%), var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
.hidden { display: none !important; }

/* Login */
.login-screen { min-height: 100vh; display: grid; place-items: center; padding: 24px; }
.login-card {
  width: 100%; max-width: 380px; background: var(--panel); border: 1px solid var(--border);
  border-radius: 18px; padding: 28px; box-shadow: 0 20px 60px rgba(0,0,0,.5);
}
.brand { display: flex; align-items: center; gap: 12px; margin-bottom: 20px; }
.brand.small { margin-bottom: 24px; }
.brand-mark {
  width: 42px; height: 42px; border-radius: 11px; display: grid; place-items: center;
  font-weight: 800; color: #10131b; background: linear-gradient(135deg, var(--accent), var(--accent-2));
}
.brand h1, .brand h2 { margin: 0; font-size: 18px; letter-spacing: .2px; }
.brand p, .brand span { margin: 0; color: var(--muted); font-size: 12px; }
.login-card label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 6px; }
.login-card input {
  width: 100%; padding: 12px 14px; border-radius: 10px; border: 1px solid var(--border);
  background: var(--panel-2); color: var(--text); font-size: 15px; margin-bottom: 14px;
}
.login-card input:focus { outline: none; border-color: var(--accent); }
.login-card button {
  width: 100%; padding: 12px; border: none; border-radius: 10px; cursor: pointer; font-weight: 700;
  color: #10131b; background: linear-gradient(135deg, var(--accent), var(--accent-2));
}
.error { color: var(--danger); font-size: 13px; min-height: 18px; margin: 8px 0 0; }

/* App layout */
.app { display: grid; grid-template-columns: 280px 1fr; height: 100vh; }
.sidebar {
  border-right: 1px solid var(--border); background: var(--panel); padding: 18px;
  display: flex; flex-direction: column; gap: 16px; overflow-y: auto;
}
.model { font-size: 11px; color: var(--accent-2); }
.ghost {
  background: var(--panel-2); color: var(--text); border: 1px solid var(--border);
  border-radius: 10px; padding: 10px 12px; cursor: pointer; font-size: 14px;
}
.ghost:hover { border-color: var(--accent); }
.ghost.sm { padding: 7px 10px; font-size: 13px; }
.panel { background: var(--panel-2); border: 1px solid var(--border); border-radius: 12px; padding: 14px; }
.panel h3 { margin: 0 0 10px; font-size: 12px; text-transform: uppercase; letter-spacing: .8px; color: var(--muted); }
.stats { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.stats li { display: flex; justify-content: space-between; font-size: 13px; }
.stats li span:last-child { color: var(--accent-2); font-variant-numeric: tabular-nums; }
.hint { color: var(--muted); font-size: 12px; line-height: 1.5; margin: 6px 0 0; }
.btnrow { display: flex; gap: 8px; margin-top: 10px; }
.spacer { flex: 1; }

/* Chat */
.chat { display: flex; flex-direction: column; min-width: 0; }
.messages { flex: 1; overflow-y: auto; padding: 28px 20px 12px; }
.empty { max-width: 640px; margin: 8vh auto 0; text-align: center; color: var(--muted); }
.empty h2 { color: var(--text); font-size: 24px; }
.examples { display: grid; gap: 10px; margin-top: 22px; }
.example {
  background: var(--panel); border: 1px solid var(--border); color: var(--text);
  padding: 12px 14px; border-radius: 10px; cursor: pointer; text-align: left; font-size: 14px;
}
.example:hover { border-color: var(--accent); }

.msg { max-width: 820px; margin: 0 auto 18px; display: flex; gap: 12px; }
.msg .avatar {
  width: 30px; height: 30px; border-radius: 8px; flex: 0 0 30px; display: grid; place-items: center;
  font-size: 12px; font-weight: 700;
}
.msg.user .avatar { background: var(--user); color: var(--accent-2); }
.msg.ai .avatar { background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #10131b; }
.bubble { background: var(--ai); border: 1px solid var(--border); border-radius: 12px; padding: 12px 15px; font-size: 15px; line-height: 1.6; white-space: pre-wrap; word-wrap: break-word; min-width: 0; }
.msg.user .bubble { background: var(--user); }
.bubble p { margin: 0 0 8px; }
.bubble code { background: #0c1017; padding: 1px 5px; border-radius: 5px; font-size: 13px; }

.feedback { display: flex; gap: 8px; margin: 6px 0 0 42px; }
.feedback button { background: none; border: none; color: var(--muted); cursor: pointer; font-size: 15px; padding: 2px 6px; border-radius: 6px; }
.feedback button:hover { color: var(--text); background: var(--panel-2); }
.feedback button.active { color: var(--accent-2); }

/* Confirmation cards */
.confirm-card { max-width: 820px; margin: 0 auto 18px; background: var(--panel); border: 1px solid var(--accent); border-radius: 12px; padding: 16px; }
.confirm-card h4 { margin: 0 0 10px; font-size: 13px; color: var(--accent-2); text-transform: uppercase; letter-spacing: .6px; }
.action { border: 1px solid var(--border); border-radius: 10px; padding: 12px; margin-bottom: 10px; background: var(--panel-2); }
.action .tool { font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: .5px; }
.action .summary { font-size: 14px; margin-top: 4px; white-space: pre-wrap; }
.action .row { display: flex; gap: 10px; margin-top: 10px; }
.btn-approve { background: var(--ok); color: #06210f; border: none; border-radius: 8px; padding: 8px 14px; cursor: pointer; font-weight: 700; }
.btn-reject { background: transparent; color: var(--danger); border: 1px solid var(--danger); border-radius: 8px; padding: 8px 14px; cursor: pointer; }
.action.done .row { display: none; }
.badge { font-size: 12px; padding: 2px 8px; border-radius: 20px; }
.badge.ok { background: rgba(63,185,80,.15); color: var(--ok); }
.badge.no { background: rgba(229,72,77,.15); color: var(--danger); }

/* Composer */
.composer { display: flex; gap: 10px; padding: 16px 20px 22px; border-top: 1px solid var(--border); background: var(--panel); }
.composer textarea {
  flex: 1; resize: none; background: var(--panel-2); border: 1px solid var(--border); color: var(--text);
  border-radius: 12px; padding: 13px 15px; font-size: 15px; font-family: inherit; max-height: 200px;
}
.composer textarea:focus { outline: none; border-color: var(--accent); }
.composer button {
  border: none; border-radius: 12px; padding: 0 22px; cursor: pointer; font-weight: 700; color: #10131b;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
}
.composer button:disabled { opacity: .5; cursor: default; }

.typing { display: inline-flex; gap: 4px; }
.typing span { width: 6px; height: 6px; border-radius: 50%; background: var(--muted); animation: blink 1.2s infinite; }
.typing span:nth-child(2) { animation-delay: .2s; }
.typing span:nth-child(3) { animation-delay: .4s; }
@keyframes blink { 0%, 60%, 100% { opacity: .25; } 30% { opacity: 1; } }

@media (max-width: 760px) {
  .app { grid-template-columns: 1fr; }
  .sidebar { display: none; }
}