:root {
  --bg: #ffffff;
  --chrome: #f7f8f9;
  --surface: #ffffff;
  --border: #e6e8eb;
  --border-strong: #d4d7db;
  --text: #1a1d21;
  --text-muted: #6b7280;
  --text-faint: #9ca3af;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --accent-soft: #eff6ff;
  --accent-border: #bfdbfe;
  --green: #047857;
  --green-soft: #ecfdf5;
  --amber: #b45309;
  --amber-soft: #fffbeb;
  --red: #dc2626;
  --red-soft: #fef2f2;
  --gray-soft: #f3f4f6;
}
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: 'Inter', -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 13.5px;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

header {
  height: 56px;
  display: flex; align-items: center; gap: 12px;
  padding: 0 20px;
  background: var(--chrome);
  border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: 11px; }
.brand .mark {
  width: 26px; height: 26px; border-radius: 7px;
  background: var(--accent); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 13px;
}
.brand .name { font-weight: 600; font-size: 14.5px; letter-spacing: -0.01em; line-height: 1.1; }
.brand .sub { color: var(--text-muted); font-size: 12px; }
header .spacer { flex: 1; }
.status { display: flex; align-items: center; gap: 7px; font-size: 12px; color: var(--text-muted); font-weight: 500; }
.status .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--green); }
.status.offline .dot { background: var(--text-faint); }

.layout { display: flex; height: calc(100vh - 56px); }

.sessions {
  width: 360px; flex-shrink: 0;
  background: var(--chrome);
  border-right: 1px solid var(--border);
  overflow-y: auto;
}
.sessions .section-label {
  padding: 18px 18px 10px;
  font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--text-faint);
}
.session {
  padding: 14px 18px; cursor: pointer;
  border-left: 3px solid transparent;
  border-bottom: 1px solid var(--border);
  transition: background 0.1s ease;
  text-align: left; width: 100%;
}
.session:hover { background: #fff; }
.session.active { background: #fff; border-left-color: var(--accent); }
.session .row { display: flex; align-items: center; gap: 10px; }
.session .name {
  font-weight: 600; font-size: 13.5px; color: var(--text);
  flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.session .meta { font-size: 12px; color: var(--text-muted); margin-top: 3px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.session .preview { font-size: 12px; color: var(--text-muted); margin-top: 5px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.badge {
  display: inline-flex; align-items: center;
  padding: 3px 9px; border-radius: 999px;
  font-size: 11px; font-weight: 500; white-space: nowrap;
}
.badge-attn { background: var(--amber-soft); color: var(--amber); }
.badge-created { background: var(--green-soft); color: var(--green); }
.badge-live { background: var(--accent-soft); color: var(--accent); }
.badge-terminal { background: var(--gray-soft); color: var(--text-muted); }
.badge-seed { background: #fff1f2; color: #be123c; border: 1px solid #fecdd3; }
.badge-test { background: var(--gray-soft); color: var(--text-faint); }

.chat { flex: 1; display: flex; flex-direction: column; min-width: 0; background: var(--surface); }
.chat-header {
  padding: 14px 20px; border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
}
.chat-header .cust { font-weight: 600; font-size: 15px; }
.chat-header .sub { color: var(--text-muted); font-size: 12px; }

.messages { flex: 1; overflow-y: auto; padding: 22px 22px 14px; }
.msg { max-width: 72%; margin-bottom: 18px; }
.msg .who {
  font-size: 11px; font-weight: 600; color: var(--text-muted);
  margin-bottom: 5px; display: flex; gap: 8px; align-items: center;
}
.msg .who .when { font-weight: 400; color: var(--text-faint); }
.msg .bubble {
  padding: 10px 14px; border-radius: 10px; line-height: 1.55;
  white-space: pre-wrap; word-wrap: break-word; font-size: 13.5px;
}
.msg.customer { margin-left: 0; margin-right: auto; }
.msg.customer .bubble { background: var(--gray-soft); color: var(--text); border: 1px solid var(--border-strong); border-bottom-left-radius: 3px; }
.msg.bot, .msg.desk { margin-left: auto; margin-right: 0; }
.msg.bot .who, .msg.desk .who { justify-content: flex-end; }
.msg.bot .who .role-name { color: var(--accent); }
.msg.desk .who .role-name { color: var(--text-muted); }
.msg.bot .bubble { background: var(--accent-soft); color: var(--text); border: 1px solid var(--accent-border); border-bottom-right-radius: 3px; }
.msg.desk .bubble { background: var(--accent); color: #fff; border-bottom-right-radius: 3px; }

.intent-card {
  background: var(--accent-soft); border: 1px solid var(--accent-border);
  border-radius: 8px; padding: 14px 16px; margin: 4px 0 20px;
}
.intent-card h4 { margin: 0 0 8px; font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; color: var(--accent); }
.intent-card .line { font-size: 13.5px; color: var(--text); padding: 2px 0; }
.intent-card .line code { font-weight: 600; color: var(--text); }

.actions {
  padding: 14px 20px; border-top: 1px solid var(--border);
  display: flex; gap: 8px; align-items: center; background: #fff;
}
button {
  padding: 9px 15px; border-radius: 6px; cursor: pointer;
  font-weight: 500; font-size: 13px; font-family: inherit;
  border: 1px solid transparent; transition: background 0.12s, color 0.12s, border-color 0.12s;
  white-space: nowrap; background: #fff; color: var(--text);
}
button.approve { background: var(--accent); color: #fff; }
button.approve:hover { background: var(--accent-hover); }
button.reject { background: #fff; color: var(--red); border-color: #fca5a5; }
button.reject:hover { background: var(--red-soft); }
button.takeover { background: #fff; color: var(--text-muted); border-color: var(--border-strong); }
button.takeover:hover { background: var(--gray-soft); color: var(--text); }
button.identify { background: var(--amber-soft); color: var(--amber); border-color: #fde68a; }
button.identify:hover { background: #fef3c7; }
button.close { background: #fff; color: var(--text-muted); border-color: var(--border-strong); }
button.close:hover { background: var(--red-soft); color: var(--red); border-color: #fca5a5; }
button:disabled { opacity: 0.45; cursor: default; }
input[type=text], input[type=password], input[type=email] {
  flex: 1; padding: 10px 13px; border-radius: 6px;
  border: 1px solid var(--border-strong); background: #fff; color: var(--text);
  font-family: inherit; font-size: 13px;
}
input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }

.empty { color: var(--text-faint); text-align: center; margin-top: 48px; font-size: 13.5px; }
.x3-error { color: var(--red); font-size: 12px; background: var(--red-soft); padding: 8px 12px; border-radius: 6px; margin-bottom: 14px; }

.cand { font-size: 12px; color: var(--text-muted); padding: 1px 0 1px 14px; }
.cand-desc { color: var(--text); }
.cand-reason { color: var(--text-faint); font-style: italic; margin-left: 6px; }
.raw-text { font-size: 12px; color: var(--text-muted); background: var(--gray-soft); border: 1px solid var(--border); border-radius: 8px; padding: 10px 14px; margin: 0 0 20px; white-space: pre-wrap; word-wrap: break-word; }
.raw-label { display: block; font-size: 10px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-faint); margin-bottom: 4px; }
.sage-card { background: var(--surface); border: 1px solid var(--border-strong); border-radius: 8px; padding: 12px 16px; margin: 0 0 20px; }
.sage-grid { display: grid; grid-template-columns: 92px 1fr; row-gap: 5px; column-gap: 10px; }
.sage-k { font-size: 11px; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.03em; }
.sage-v { font-size: 13px; color: var(--text); }
.sage-latency { margin-top: 8px; font-size: 11px; color: var(--text-faint); font-style: italic; }
.muted { color: var(--text-faint); }
.voice-extra { margin-top: 6px; }
.voice-extra audio { width: 100%; max-width: 260px; height: 34px; display: block; }
.voice-meta { display: flex; align-items: center; gap: 8px; margin-top: 6px; font-size: 12px; color: var(--text-muted); flex-wrap: wrap; }
.voice-meta strong { color: var(--text); }
.voice-lang { font: inherit; font-size: 12px; padding: 3px 6px; border: 1px solid var(--border-strong); border-radius: 6px; background: var(--surface); color: var(--text); }
.retranscribe { font: inherit; font-size: 12px; padding: 4px 10px; border: 1px solid var(--border-strong); border-radius: 6px; background: var(--surface); color: #2563eb; cursor: pointer; }
.retranscribe:hover { background: var(--gray-soft); }

.back-btn {
  display: none; align-items: center; gap: 5px;
  padding: 5px 12px; border-radius: 6px; font-size: 12.5px; font-weight: 500;
  border: 1px solid var(--border-strong); background: #fff; color: var(--text); cursor: pointer;
}
.back-btn:hover { background: var(--gray-soft); }

/* login */
.auth-shell { display: flex; min-height: 100vh; }
.auth-panel {
  flex: 0 0 44%; max-width: 520px;
  display: flex; flex-direction: column;
  padding: 44px 48px;
  background: linear-gradient(160deg, #0f172a 0%, #16233b 55%, #101c33 100%);
  color: #e2e8f0;
}
.auth-brand { display: flex; align-items: center; gap: 13px; }
.auth-mark {
  width: 40px; height: 40px; border-radius: 10px;
  background: linear-gradient(135deg, #3b82f6, #2563eb);
  color: #fff; display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 19px; box-shadow: 0 4px 14px rgba(37, 99, 235, 0.4);
}
.auth-name { font-weight: 600; font-size: 18px; letter-spacing: -0.01em; line-height: 1.1; }
.auth-sub { color: #64748b; font-size: 12px; }
.auth-copy { margin: auto 0; }
.auth-copy h1 { font-size: 30px; font-weight: 600; letter-spacing: -0.02em; line-height: 1.2; color: #f8fafc; margin: 0 0 18px; }
.auth-copy p { font-size: 14.5px; line-height: 1.6; color: #94a3b8; margin: 0; max-width: 380px; }
.auth-foot { color: #475569; font-size: 12px; }
.auth-main {
  flex: 1; display: flex; align-items: center; justify-content: center;
  padding: 40px; background: var(--chrome);
}
.auth-card { width: 100%; max-width: 400px; }
.auth-card h2 { font-size: 24px; font-weight: 600; letter-spacing: -0.02em; margin: 0 0 6px; }
.auth-lead { color: var(--text-muted); font-size: 14px; margin: 0 0 28px; }
.auth-error {
  color: var(--red); font-size: 13px; background: var(--red-soft);
  padding: 11px 14px; border-radius: 8px; margin-bottom: 20px; border: 1px solid #fecaca;
}
.field-group { margin-bottom: 18px; }
.field-label { display: block; font-size: 13px; font-weight: 600; color: var(--text); margin: 0 0 6px; }
.field {
  width: 100%; height: 44px; padding: 0 14px;
  font-size: 14px; color: var(--text);
  background: #fff; border: 1px solid var(--border-strong); border-radius: 8px;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.field:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.field::placeholder { color: var(--text-faint); }
.field-msg { display: block; color: var(--red); font-size: 12px; margin-top: 5px; }
.login-btn {
  width: 100%; height: 44px; margin-top: 6px;
  background: var(--accent); color: #fff; border: none; border-radius: 8px;
  font-size: 14px; font-weight: 600; cursor: pointer;
  transition: background 0.15s;
}
.login-btn:hover { background: var(--accent-hover); }
@media (max-width: 840px) { .auth-panel { display: none; } }

/* tabs (approvals) */
.tabs { display: flex; gap: 2px; padding: 0 18px; border-bottom: 1px solid var(--border); }
.tab { padding: 10px 14px; font-size: 12.5px; font-weight: 500; color: var(--text-muted); cursor: pointer; border-bottom: 2px solid transparent; }
.tab.active { color: var(--accent); border-bottom-color: var(--accent); }
.pending-item { padding: 14px 18px; border-bottom: 1px solid var(--border); }
.pending-item .row { display: flex; align-items: center; gap: 10px; }

@media (max-width: 720px) {
  .layout { flex-direction: column; }
  .sessions { width: 100%; flex: 1; min-height: 0; border-right: none; border-bottom: 1px solid var(--border); }
  .chat { display: none; }
  body.detail-open .sessions { display: none; }
  body.detail-open .chat { display: flex; min-height: 0; }
  .back-btn { display: inline-flex; }
  .msg { max-width: 92%; }
  .actions { flex-wrap: wrap; }
}