:root {
  --bg: #ffffff;
  --panel: #f7f7f8;
  --text: #1f2328;
  --muted: #6b7280;
  --border: #e5e7eb;
  --user-bubble: #f1f1f3;
  --ok: #059669;
  --warn-bg: #fff7ed;
  --warn: #c2410c;
  --card: #ffffff;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #17181b;
    --panel: #1f2024;
    --text: #e8e8ea;
    --muted: #9aa0a6;
    --border: #2e3036;
    --user-bubble: #2a2b30;
    --ok: #34d399;
    --warn-bg: #3a2614;
    --warn: #fdba74;
    --card: #222328;
  }
}
* { box-sizing: border-box; }
/* --accent is set per site in index.html. */
:root { --accent-soft: color-mix(in srgb, var(--accent) 12%, var(--bg)); --accent-text: var(--accent); }
@media (prefers-color-scheme: dark) { :root { --accent-text: color-mix(in srgb, var(--accent) 55%, white); } }
/* Each site sets --bg1/--bg2 in index.html. Dark mode tints a dark base with the site accent instead. */
:root { --page-bg: radial-gradient(1200px 600px at 85% -10%, color-mix(in srgb, var(--accent) 16%, transparent), transparent 70%), radial-gradient(900px 500px at -10% 110%, color-mix(in srgb, var(--accent) 10%, transparent), transparent 70%), linear-gradient(160deg, var(--bg1), var(--bg2)); --glass: color-mix(in srgb, var(--bg) 65%, transparent); }
@media (prefers-color-scheme: dark) {
  :root { --page-bg: radial-gradient(1200px 600px at 85% -10%, color-mix(in srgb, var(--accent) 22%, transparent), transparent 70%), radial-gradient(900px 500px at -10% 110%, color-mix(in srgb, var(--accent) 12%, transparent), transparent 70%), linear-gradient(160deg, color-mix(in srgb, var(--accent) 10%, #121316), #17181b); }
}
html, body { margin: 0; height: 100%; background: var(--page-bg) fixed, var(--bg); color: var(--text); font: 15px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
button { font: inherit; cursor: pointer; }

.app { display: flex; height: 100dvh; }
.sidebar { width: 260px; background: var(--glass); backdrop-filter: blur(12px); border-right: 1px solid var(--border); padding: 16px 12px; display: flex; flex-direction: column; gap: 8px; }
.brand { font-weight: 700; font-size: 17px; padding: 4px 8px 8px; }
.new-chat { border: 1px solid var(--border); background: var(--bg); color: var(--text); border-radius: 10px; padding: 9px 12px; text-align: left; }
.new-chat:hover { border-color: var(--accent); }
.section-label { font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; margin: 12px 8px 4px; }
nav { display: flex; flex-direction: column; gap: 2px; overflow-y: auto; }
.pack-btn { text-decoration: none; display: flex; gap: 10px; align-items: center; border: 0; background: transparent; color: var(--text); padding: 8px 10px; border-radius: 8px; text-align: left; }
.pack-btn:hover { background: var(--border); }
.pack-btn.active { background: var(--accent-soft); color: var(--accent-text); font-weight: 600; }
.pack-btn .ico { width: 22px; text-align: center; }
.mode { margin-top: auto; font-size: 12px; color: var(--muted); padding: 8px; border-top: 1px solid var(--border); }

.main { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.topbar { display: flex; align-items: center; gap: 10px; padding: 12px 20px; border-bottom: 1px solid var(--border); background: var(--glass); backdrop-filter: blur(12px); }
.menu { display: none; border: 0; background: none; color: var(--text); font-size: 20px; }
.active-pack { font-weight: 600; }

.chat { flex: 1; overflow-y: auto; padding: 24px 16px; }
.chat > * { max-width: 760px; margin-left: auto; margin-right: auto; }
.welcome { text-align: center; margin-top: 8vh; }
.hero-icon { font-size: 44px; width: 76px; height: 76px; line-height: 76px; margin: 0 auto 14px; border-radius: 22px; background: var(--accent-soft); }
.logo { display: inline-block; margin-right: 2px; }
.sister { display: flex; align-items: center; gap: 12px; margin: 10px 0; padding: 12px 14px; border: 1px dashed var(--accent-text); border-radius: 14px; color: var(--text); text-decoration: none; max-width: 420px; }
.sister:hover { background: var(--accent-soft); }
.sister .ico { font-size: 26px; }
.sister small { display: block; color: var(--muted); }
.sister .go { margin-left: auto; color: var(--accent-text); font-weight: 600; white-space: nowrap; }
.welcome h1 { font-size: 28px; margin: 0 0 8px; }
.welcome p { color: var(--muted); margin: 0 auto 24px; max-width: 520px; }
.starters { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 10px; }
.starter { border: 1px solid var(--border); background: var(--bg); color: var(--text); border-radius: 12px; padding: 12px; text-align: left; font-size: 14px; }
.starter:hover { border-color: var(--accent); }
.starter small { display: block; color: var(--muted); margin-bottom: 2px; }

.msg { margin: 18px auto; }
.msg.user { display: flex; justify-content: flex-end; }
.msg.user .bubble { background: var(--user-bubble); padding: 10px 14px; border-radius: 18px; max-width: 80%; white-space: pre-wrap; }
.route { font-size: 12px; color: var(--muted); margin-bottom: 6px; }
.route b { color: var(--accent-text); }
.text p { margin: 0 0 10px; }
.text ul, .text ol { margin: 0 0 10px; padding-left: 22px; }
.text code { background: var(--panel); padding: 1px 5px; border-radius: 5px; font-size: 13px; }
.text pre { background: var(--panel); padding: 12px; border-radius: 10px; overflow-x: auto; }
.text pre code { background: none; padding: 0; }
.tool-status { font-size: 12px; color: var(--muted); margin: 6px 0; }
.tool-status.error { color: var(--warn); }
.notice { font-size: 13px; padding: 8px 12px; border-radius: 8px; margin: 8px 0; background: var(--panel); color: var(--muted); }
.notice.warn { background: var(--warn-bg); color: var(--warn); }
.typing::after { content: "▍"; animation: blink 1s steps(2) infinite; }
@keyframes blink { 50% { opacity: 0; } }

.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 10px; margin: 10px 0; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 12px 14px; display: flex; flex-direction: column; gap: 6px; }
.card .kind { font-size: 11px; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); }
.card h4 { margin: 0; font-size: 15px; }
.card .sub { color: var(--muted); font-size: 13px; }
.card .price { font-weight: 700; font-size: 17px; }
.card .price small { font-weight: 400; color: var(--muted); font-size: 12px; margin-left: 4px; }
.card dl { margin: 0; display: grid; grid-template-columns: auto 1fr; gap: 2px 10px; font-size: 13px; }
.card dt { color: var(--muted); }
.card dd { margin: 0; }
.badges { display: flex; flex-wrap: wrap; gap: 4px; }
.badge { font-size: 11px; background: var(--panel); border: 1px solid var(--border); border-radius: 99px; padding: 1px 8px; }
.actions { display: flex; flex-wrap: wrap; gap: 6px; margin-top: auto; padding-top: 4px; }
.actions button { border: 1px solid var(--border); background: var(--bg); color: var(--text); border-radius: 8px; padding: 5px 10px; font-size: 13px; }
.actions button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.actions button:disabled { opacity: .5; cursor: default; }
.card.confirm { border: 2px solid var(--accent); grid-column: 1 / -1; max-width: 420px; }
.card.receipt { border: 2px solid var(--ok); grid-column: 1 / -1; max-width: 420px; }
.card.receipt .kind { color: var(--ok); }
.card.confirm .kind { color: var(--accent-text); }
.card.wide { grid-column: 1 / -1; }

.composer { display: flex; gap: 8px; align-items: flex-end; max-width: 760px; width: calc(100% - 32px); margin: 0 auto; border: 1px solid var(--border); border-radius: 18px; padding: 8px 8px 8px 16px; background: var(--bg); box-shadow: 0 4px 20px color-mix(in srgb, var(--accent) 12%, transparent); }
.composer textarea { flex: 1; border: 0; outline: 0; resize: none; background: transparent; color: var(--text); font: inherit; max-height: 200px; padding: 6px 0; }
.composer button { width: 36px; height: 36px; border-radius: 50%; border: 0; background: var(--accent); color: #fff; font-size: 18px; }
.composer button:disabled { opacity: .4; }
.foot { text-align: center; font-size: 12px; color: var(--muted); padding: 8px 16px 12px; }

@media (max-width: 760px) {
  .sidebar { position: fixed; inset: 0 auto 0 0; z-index: 10; background: var(--bg); transform: translateX(-100%); transition: transform .2s; }
  .sidebar.open { transform: none; box-shadow: 0 0 40px rgba(0,0,0,.3); }
  .menu { display: block; }
  .topbar { padding: 10px 16px; }
  .msg.user .bubble { max-width: 90%; }
}