:root {
--bg: #0b1220;
--panel: #121a2b;
--ink: #e6ecff;
--muted: #9fb0d0;
--accent: #5b8cff;
--success: #38c172;
--danger: #f05252;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji"; background: linear-gradient(180deg, #0b1220, #0e1626 60%); color: var(--ink); }


.app { max-width: 760px; margin: 0 auto; min-height: 100dvh; display: grid; grid-template-rows: auto 1fr auto; }
.topbar { position: sticky; top: 0; display: flex; align-items: center; justify-content: space-between; padding: 12px 16px; background: rgba(12, 18, 32, 0.7); backdrop-filter: blur(6px); border-bottom: 1px solid #1c2742; }
.brand { font-weight: 700; letter-spacing: .4px; }
.ghost { background: transparent; color: var(--muted); border: 1px solid #263356; padding: 8px 12px; border-radius: 12px; cursor: pointer; }
.ghost:hover { border-color: var(--accent); color: var(--ink); }


.chat { padding: 16px; display: flex; flex-direction: column; gap: 10px; }
.msg { display: flex; }
.msg.user { justify-content: flex-end; }
.bubble { max-width: 78%; padding: 12px 14px; border-radius: 14px; background: var(--panel); border: 1px solid #1c2742; box-shadow: 0 8px 20px rgba(0,0,0,.25); }
.msg.user .bubble { background: #1a2440; border-color: #2b3b66; }
.meta { color: var(--muted); font-size: 12px; margin-top: 4px; }


.composer { position: sticky; bottom: 0; display: grid; grid-template-columns: 1fr auto; gap: 8px; padding: 12px; background: rgba(12, 18, 32, 0.8); border-top: 1px solid #1c2742; }
.composer input { background: var(--panel); border: 1px solid #1d2948; color: var(--ink); padding: 12px 14px; border-radius: 12px; outline: none; }
.composer input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(91,140,255,.2); }
.composer .send { background: var(--accent); border: none; color: white; padding: 12px 16px; border-radius: 12px; cursor: pointer; font-weight: 600; }


.badge { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 11px; border: 1px solid #29407a; color: var(--muted); }
.row { display: grid; gap: 6px; }
.actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
.btn { background: #1a2440; border: 1px solid #2b3b66; color: var(--ink); padding: 8px 10px; border-radius: 10px; cursor: pointer; }
.btn:hover { border-color: var(--accent); }


.summary { border: 1px dashed #2a3a66; padding: 12px; border-radius: 12px; background: rgba(26,36,64,.35); }
.success { color: var(--success); }
.error { color: var(--danger); }