:root {
  --bg: #0f1115; --panel: #171a21; --panel2: #1e222b; --border: #2a2f3a;
  --text: #e6e8ec; --muted: #9aa3b2; --accent: #5b8cff; --accent2: #3b6fe0;
  --user: #24303f; --ok: #3fb950; --warn: #d29922;
}
* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body { font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: var(--bg); color: var(--text); }
.hidden { display: none !important; }

/* Login */
.login { height: 100vh; display: grid; place-items: center; }
.login-card { background: var(--panel); border: 1px solid var(--border); border-radius: 16px;
  padding: 40px 44px; text-align: center; max-width: 420px; }
.login-card .logo { font-size: 40px; }
.login-card h1 { margin: 6px 0 2px; }
.login-card p { color: var(--muted); }
.gbtn { display: inline-block; margin: 18px 0 8px; padding: 11px 22px; border-radius: 10px;
  background: var(--accent); color: #fff; text-decoration: none; font-weight: 600; }
.gbtn:hover { background: var(--accent2); }
.fine { font-size: 12px; }

/* App layout */
.app { display: grid; grid-template-columns: 264px 1fr; height: 100vh; }
.sidebar { background: var(--panel); border-right: 1px solid var(--border);
  display: flex; flex-direction: column; padding: 14px; gap: 12px; min-height: 0; overflow: hidden; }
.brand { font-weight: 700; font-size: 18px; }
.new-chat { background: var(--panel2); color: var(--text); border: 1px solid var(--border);
  border-radius: 10px; padding: 10px; cursor: pointer; font-weight: 600; }
.new-chat:hover { border-color: var(--accent); }
.conv-list { flex: 1; min-height: 0; overflow-y: auto; display: flex; flex-direction: column; gap: 4px; }
.conv { padding: 9px 10px; border-radius: 8px; cursor: pointer; color: var(--muted);
  font-size: 14px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.conv:hover { background: var(--panel2); color: var(--text); }
.conv.active { background: var(--panel2); color: var(--text); }
.user { position: relative; border-top: 1px solid var(--border); padding-top: 10px; }
.user-btn { width: 100%; display: flex; align-items: center; gap: 8px; background: transparent;
  border: 1px solid transparent; border-radius: 10px; padding: 7px 8px; cursor: pointer;
  color: var(--text); font: inherit; font-size: 14px; text-align: left; }
.user-btn:hover { background: var(--panel2); border-color: var(--border); }
.user-btn img { width: 26px; height: 26px; border-radius: 50%; }
.user-name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.user-caret { color: var(--muted); font-size: 11px; }
.user-menu { position: absolute; bottom: calc(100% + 6px); left: 0; right: 0; z-index: 30;
  background: var(--panel2); border: 1px solid var(--border); border-radius: 10px; padding: 6px;
  box-shadow: 0 8px 24px rgba(0,0,0,.45); display: flex; flex-direction: column; }
.user-menu a { padding: 8px 10px; border-radius: 8px; color: var(--text); text-decoration: none; font-size: 14px; }
.user-menu a:hover { background: var(--panel); }
.um-head { padding: 4px 10px 8px; margin-bottom: 4px; border-bottom: 1px solid var(--border);
  font-size: 13px; color: var(--text); display: flex; flex-direction: column; }
.um-head span { color: var(--muted); font-size: 12px; overflow: hidden; text-overflow: ellipsis; }

/* Main */
.main { display: flex; flex-direction: column; min-width: 0; min-height: 0; }
.topbar { display: flex; align-items: center; gap: 10px; padding: 10px 24px;
  border-bottom: 1px solid var(--border); background: var(--panel); }
.repo-label { color: var(--muted); font-size: 13px; }
.repo-select { background: var(--panel2); color: var(--text); border: 1px solid var(--border);
  border-radius: 8px; padding: 6px 10px; font: inherit; font-size: 14px; }
.repo-select:focus { outline: none; border-color: var(--accent); }
.repo-hint { color: var(--muted); font-size: 12px; margin-left: 4px; }
.style-label { margin-left: auto; }
.messages { flex: 1; overflow-y: auto; overflow-x: hidden; padding: 24px 0; min-width: 0; }
.row { max-width: 820px; margin: 0 auto; padding: 6px 24px; }
.msg { padding: 14px 16px; border-radius: 12px; margin: 8px 0; line-height: 1.55;
  min-width: 0; overflow-wrap: anywhere; word-break: break-word; }
.msg > * { max-width: 100%; }
.msg.user { background: var(--user); }
.msg.assistant { background: var(--panel); border: 1px solid var(--border); }
.msg.assistant.refused { border-color: var(--warn); }
.msg .meta { margin-top: 10px; font-size: 12px; color: var(--muted); border-top: 1px dashed var(--border);
  padding-top: 8px; }
.msg pre { background: #0b0d12; padding: 12px; border-radius: 8px; max-width: 100%;
  white-space: pre-wrap; overflow-wrap: anywhere; word-break: break-word; }
.msg code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13px; }
.msg :not(pre) > code { background: #0b0d12; padding: 1px 5px; border-radius: 4px;
  overflow-wrap: anywhere; word-break: break-all; }
.msg table { border-collapse: collapse; display: block; width: max-content; max-width: 100%;
  overflow-x: auto; }
.msg th, .msg td { border: 1px solid var(--border); padding: 5px 9px; }
.thinking { color: var(--muted); font-style: italic; animation: atlas-pulse 1.5s ease-in-out infinite; }
@keyframes atlas-pulse { 0%, 100% { opacity: .55; } 50% { opacity: 1; } }

/* Composer */
.composer { max-width: 820px; margin: 0 auto; width: 100%; padding: 14px 24px 22px;
  display: flex; gap: 10px; }
.composer textarea { flex: 1; resize: none; background: var(--panel2); color: var(--text);
  border: 1px solid var(--border); border-radius: 12px; padding: 12px 14px; font: inherit;
  max-height: 200px; }
.composer textarea:focus { outline: none; border-color: var(--accent); }
.composer button { background: var(--accent); color: #fff; border: none; border-radius: 12px;
  padding: 0 20px; font-weight: 600; cursor: pointer; }
.composer button:disabled { opacity: .5; cursor: default; }

/* Sidebar feedback indicator */
.conv { display: flex; align-items: center; gap: 6px; }
.conv .fb { margin-left: auto; font-size: 12px; opacity: .8; }
.conv .title { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* Modal */
.modal { position: fixed; inset: 0; background: rgba(0,0,0,.55); display: grid; place-items: center;
  z-index: 50; }
.modal-card { background: var(--panel); border: 1px solid var(--border); border-radius: 14px;
  padding: 24px 26px; width: min(440px, 92vw); }
.modal-card h3 { margin: 0 0 4px; }
.fb-sub { color: var(--muted); margin: 0 0 14px; font-size: 14px; }
.fb-title { background: var(--panel2); border: 1px solid var(--border); border-radius: 8px;
  padding: 8px 10px; font-size: 13px; color: var(--text); margin: 0 0 14px;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.fb-buttons { display: flex; gap: 10px; }
.fb-btn { flex: 1; padding: 12px; border-radius: 10px; background: var(--panel2);
  border: 1px solid var(--border); color: var(--text); cursor: pointer; font-weight: 600; }
.fb-btn:hover { border-color: var(--accent); }
.fb-btn.sel { border-color: var(--accent); background: #24303f; }
.fb-btn[data-rating="down"].sel { border-color: var(--warn); background: #34291a; }
.modal-card textarea { width: 100%; margin: 12px 0 16px; background: var(--panel2); color: var(--text);
  border: 1px solid var(--border); border-radius: 10px; padding: 10px 12px; font: inherit; resize: vertical; }
.modal-actions { display: flex; justify-content: flex-end; gap: 10px; }
.btn-ghost { background: transparent; border: 1px solid var(--border); color: var(--muted);
  border-radius: 10px; padding: 9px 16px; cursor: pointer; }
.btn-primary { background: var(--accent); border: none; color: #fff; border-radius: 10px;
  padding: 9px 18px; font-weight: 600; cursor: pointer; }
.btn-primary:disabled { opacity: .5; cursor: default; }

/* Admin page */
.admin { max-width: 1120px; margin: 0 auto; padding: 0 24px 48px; }
.admin-header { position: sticky; top: 0; background: var(--bg); display: flex; align-items: center;
  gap: 16px; padding: 16px 0; border-bottom: 1px solid var(--border); flex-wrap: wrap; z-index: 5; }
.admin-header .brand { font-weight: 700; font-size: 18px; }
.admin-filters { display: flex; gap: 16px; color: var(--muted); font-size: 13px; align-items: center; }
.admin-filters select { margin-left: 6px; }
.admin-back { margin-left: auto; color: var(--accent); text-decoration: none; }
.admin-body { padding-top: 18px; }
.admin-count { color: var(--muted); font-size: 13px; margin-bottom: 10px; }
.admin-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.admin-table th { text-align: left; color: var(--muted); font-weight: 600; padding: 8px 10px;
  border-bottom: 1px solid var(--border); }
.admin-table td { padding: 9px 10px; border-bottom: 1px solid var(--border); vertical-align: top; }
.admin-table tbody tr { cursor: pointer; }
.admin-table tbody tr:hover { background: var(--panel); }
.admin-table .t-title { max-width: 340px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.admin-back-btn { background: var(--panel2); color: var(--text); border: 1px solid var(--border);
  border-radius: 8px; padding: 7px 12px; cursor: pointer; margin-bottom: 14px; }
.admin-detail-head h2 { margin: 4px 0; }
.admin-sub { color: var(--muted); font-size: 13px; }
.fb-block { margin-top: 8px; padding: 8px 12px; border-radius: 8px; font-size: 14px;
  background: var(--panel2); border: 1px solid var(--border); display: inline-block; }
.fb-block.up { border-color: var(--ok); }
.fb-block.down { border-color: var(--warn); }
.fb-block.none { color: var(--muted); }
.admin-messages { padding-top: 10px; }
.admin-messages .row { max-width: 100%; margin: 0; padding: 6px 0; }

/* Per-message optional feedback bar */
.msg-fb { margin-top: 10px; padding-top: 8px; border-top: 1px dashed var(--border);
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap; font-size: 13px; color: var(--muted); }
.msg-fb .mfb-lbl { color: var(--muted); }
.msg-fb .mfb-btn { background: var(--panel2); border: 1px solid var(--border); color: var(--text);
  border-radius: 8px; padding: 3px 9px; cursor: pointer; font-size: 14px; line-height: 1.2; }
.msg-fb .mfb-btn:hover { border-color: var(--accent); }
.msg-fb .mfb-note { flex: 1; min-width: 160px; background: var(--panel2); color: var(--text);
  border: 1px solid var(--border); border-radius: 8px; padding: 5px 9px; font: inherit; font-size: 13px; }
.msg-fb .mfb-note:focus { outline: none; border-color: var(--accent); }
.msg-fb .mfb-done { color: var(--ok); }
.msg-fb .mfb-btn.sel { border-color: var(--accent); background: #24303f; }
.msg-fb .mfb-save { background: var(--accent); border: none; color: #fff; border-radius: 8px;
  padding: 4px 12px; cursor: pointer; font-size: 13px; }
.msg-fb .mfb-save:disabled { opacity: .5; cursor: default; }
.msg-fb .mfb-status { color: var(--ok); font-size: 12px; min-width: 54px; }

/* Repo multi-select dropdown (topbar) */
.repo-multi { position: relative; display: inline-block; }
.repo-toggle { cursor: pointer; min-width: 150px; max-width: 320px; text-align: left;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.repo-menu { position: absolute; top: calc(100% + 4px); left: 0; z-index: 20; min-width: 210px;
  background: var(--panel2); border: 1px solid var(--border); border-radius: 10px; padding: 6px;
  box-shadow: 0 8px 24px rgba(0,0,0,.45); }
.repo-menu .repo-opt { display: flex; align-items: center; gap: 8px; padding: 7px 9px; border-radius: 8px;
  cursor: pointer; font-size: 14px; color: var(--text); }
.repo-menu .repo-opt:hover { background: var(--panel); }
.repo-menu .repo-opt input { accent-color: var(--accent); }
.repo-menu-sep { height: 1px; background: var(--border); margin: 4px 2px; }

/* Info tooltip (ⓘ next to Repo / Answer) */
.info { position: relative; display: inline-flex; align-items: center; justify-content: center;
  width: 16px; height: 16px; border-radius: 50%; border: 1px solid var(--border); color: var(--muted);
  font-size: 10px; cursor: help; flex: none; }
.info:hover { color: var(--text); border-color: var(--accent); }
.info:hover::after { content: attr(data-tip); position: absolute; top: calc(100% + 8px); left: 0;
  z-index: 40; width: 260px; background: var(--panel2); color: var(--text); border: 1px solid var(--border);
  border-radius: 8px; padding: 8px 10px; font-size: 12px; font-weight: 400; line-height: 1.45;
  white-space: normal; box-shadow: 0 8px 24px rgba(0,0,0,.45); }
.info.info-r:hover::after { left: auto; right: 0; }

/* Topbar Help link */
.topbar-help { margin-left: 16px; color: var(--muted); text-decoration: none; font-size: 13px;
  border: 1px solid var(--border); border-radius: 8px; padding: 5px 10px; white-space: nowrap; }
.topbar-help:hover { color: var(--text); border-color: var(--accent); }

/* Sidebar unread badge */
.conv .unread { margin-left: auto; background: var(--accent); color: #fff; font-size: 11px; font-weight: 600;
  min-width: 18px; height: 18px; border-radius: 9px; display: inline-flex; align-items: center;
  justify-content: center; padding: 0 5px; flex: none; }

/* Help / FAQ page */
.help { max-width: 780px; margin: 0 auto; padding: 36px 24px 72px; line-height: 1.65; }
.help .back { color: var(--accent); text-decoration: none; font-size: 14px; }
.help h1 { display: flex; align-items: center; gap: 10px; margin: 14px 0 4px; }
.help .lead { color: var(--muted); margin-top: 0; }
.help h2 { margin-top: 30px; border-bottom: 1px solid var(--border); padding-bottom: 6px; font-size: 19px; }
.help p, .help li { color: var(--text); }
.help a { color: var(--accent); }
.help code { background: #0b0d12; padding: 1px 6px; border-radius: 4px; font-size: 13px; }