:root {
  --bg: #f6f7f9; --fg: #1a1d21; --muted: #6b7280; --line: #e3e6ea;
  --accent: #2d6cdf; --accent-soft: #eaf0fd; --card: #ffffff;
  --alfred: #efe7d8; --alfred-fg: #2a2a26; /* warm bubble for Alfred */
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0f1318; --fg: #e6e9ee; --muted: #8b95a3; --line: #2a313b;
  --accent: #60a5fa; --accent-soft: color-mix(in srgb, var(--accent) 22%, transparent);
  --card: #161b22; --alfred: #2c2a24; --alfred-fg: #ece4d4;
}
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0; font: 15px/1.5 -apple-system, system-ui, "Segoe UI", sans-serif;
  color: var(--fg); background: var(--bg);
}
.loading { display: grid; place-items: center; height: 100vh; color: var(--muted); }

/* ---- login ---- */
.login { min-height: 100vh; display: grid; place-items: center; padding: 1.5rem; }
.login-card {
  width: 100%; max-width: 380px; background: var(--card); border: 1px solid var(--line);
  border-radius: 16px; padding: 2.25rem 1.75rem; text-align: center;
  box-shadow: 0 8px 30px rgba(0,0,0,.06);
}
.brand-logo { height: 76px; width: auto; border-radius: 14px; }
.login h1 { font-size: 1.6rem; margin: .9rem 0 .15rem; }
.login .sub { color: var(--muted); margin: 0 0 1.4rem; font-size: .9rem; }
.login input[type=text], .login input[type=tel] {
  width: 100%; padding: .7rem .85rem; font-size: 1rem; border: 1px solid var(--line);
  border-radius: 10px; background: var(--card); color: var(--fg); text-align: center;
}
.login input:focus { outline: none; border-color: var(--accent); }
.login button.primary {
  width: 100%; margin-top: .8rem; padding: .72rem; font-size: 1rem; font-weight: 600;
  border: 0; border-radius: 10px; background: var(--accent); color: #fff; cursor: pointer;
}
.login button.primary:disabled { opacity: .55; cursor: default; }
.login .msg { margin-top: .9rem; font-size: .88rem; min-height: 1.2rem; }
.login .msg.err { color: #b3261e; }
.login .msg.ok { color: #1a7f37; }
.code-row { display: flex; gap: .5rem; margin-top: .8rem; }
.code-row input { flex: 1; letter-spacing: .3em; }
.code-row button { padding: 0 1rem; border: 1px solid var(--line); background: var(--card); color: var(--fg); border-radius: 10px; cursor: pointer; }
.linklike { background: none; border: 0; color: var(--accent); cursor: pointer; font-size: .85rem; margin-top: .8rem; }

/* ---- app shell ---- */
.shell { display: grid; grid-template-rows: auto 1fr; height: 100vh; }
header.bar {
  display: flex; align-items: center; gap: .7rem; padding: .55rem .9rem;
  background: var(--card); border-bottom: 1px solid var(--line);
}
header.bar img { height: 34px; width: auto; border-radius: 7px; }
header.bar .title { font-weight: 700; }
header.bar nav { display: flex; gap: .25rem; margin-left: 1rem; }
header.bar nav a {
  padding: .35rem .7rem; border-radius: 8px; cursor: pointer; color: var(--muted);
  font-weight: 500; font-size: .9rem; text-decoration: none;
}
header.bar nav a.active { background: var(--accent-soft); color: var(--accent); }
header.bar .spacer { flex: 1; }
header.bar .who { color: var(--muted); font-size: .85rem; }
header.bar .signout { background: none; border: 0; color: var(--muted); cursor: pointer; font-size: .85rem; }
header.bar .signout:hover { color: var(--fg); }
.hdr-toggle { background: none; border: 0; color: var(--muted); cursor: pointer; font-size: .85rem; padding: .3rem .4rem; }
.hdr-toggle:hover { color: var(--fg); }

main { overflow: hidden; }

/* ---- chat ---- */
.chat { display: grid; grid-template-rows: auto 1fr auto; height: 100%; max-width: 760px; margin: 0 auto; width: 100%; }
.chatfilter { display: flex; align-items: center; gap: .4rem; padding: .5rem .9rem; border-bottom: 1px solid var(--line); background: var(--card); }
.chatfilter .flabel { color: var(--muted); font-size: .8rem; margin-right: .15rem; }
.chatfilter .chip { padding: .22rem .65rem; border-radius: 999px; font-size: .8rem; cursor: pointer; color: var(--muted); border: 1px solid var(--line); }
.chatfilter .chip.active { background: var(--accent-soft); color: var(--accent); border-color: transparent; }
.chatlog { overflow-y: auto; padding: 1rem 1rem 1.5rem; display: flex; flex-direction: column; gap: .6rem; }
.msg { display: flex; flex-direction: column; align-items: flex-start; }
.msg.me { align-items: flex-end; }
.chan-tag { display: none; font-size: .64rem; padding: .05rem .45rem; border-radius: 6px; margin-top: 2px; }
.chatlog.show-source .chan-tag { display: inline-block; }
.chan-tag[data-chan="telegram"] { background: color-mix(in srgb, #229ed9 24%, transparent); color: var(--fg); }
.chan-tag[data-chan="admin"] { background: var(--accent-soft); color: var(--accent); }
.bubble { max-width: 80%; padding: .55rem .8rem; border-radius: 14px; white-space: pre-wrap; word-wrap: break-word; }
.msg.me .bubble { background: var(--accent); color: #fff; border-bottom-right-radius: 4px; }
.msg.alfred .bubble { background: var(--alfred); color: var(--alfred-fg); border-bottom-left-radius: 4px; }
.msg.sys .bubble { background: transparent; color: var(--muted); font-size: .85rem; font-style: italic; }
.typing { color: var(--muted); font-size: .85rem; padding: 0 1rem .5rem; }
.chatbar { display: flex; gap: .5rem; padding: .7rem; border-top: 1px solid var(--line); background: var(--card); }
.chatbar textarea {
  flex: 1; resize: none; padding: .6rem .8rem; font: inherit; border: 1px solid var(--line);
  border-radius: 12px; max-height: 9rem; min-height: 2.6rem; background: var(--card); color: var(--fg);
}
.chatbar textarea:focus { outline: none; border-color: var(--accent); }
.chatbar button { padding: 0 1.1rem; border: 0; border-radius: 12px; background: var(--accent); color: #fff; font-weight: 600; cursor: pointer; }
.chatbar button:disabled { opacity: .5; cursor: default; }
.chat-readonly { padding: .9rem; text-align: center; color: var(--muted); font-size: .85rem; border-top: 1px solid var(--line); background: var(--card); }

/* ---- display (placeholder) ---- */
.display-ph { display: grid; place-items: center; height: 100%; color: var(--muted); text-align: center; padding: 2rem; }