* { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #f1f5f9;
  --surface: #ffffff;
  --border: #e2e8f0;
  --text: #0f172a;
  --text-muted: #64748b;
  --accent: #4f46e5;
  --accent-soft: #eef2ff;
  --manager: #047857;
  --manager-soft: #ecfdf5;
  --topbar-h: 56px;
}

html, body { height: 100%; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
}

.brand { font-weight: 700; font-size: 16px; letter-spacing: -0.01em; }
.brand span { color: var(--accent); }

/* ---- Топбар ---- */

.topbar {
  height: var(--topbar-h);
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 0 20px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.topbar .spacer { flex: 1; }
.topbar-user { color: var(--text-muted); }

.schema-picker { display: flex; align-items: center; gap: 8px; }
.schema-picker span { color: var(--text-muted); }
.schema-picker select {
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  font: inherit;
  cursor: pointer;
}

.btn-ghost {
  padding: 7px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: transparent;
  color: var(--text-muted);
  font: inherit;
  cursor: pointer;
}
.btn-ghost:hover { background: var(--bg); color: var(--text); }

/* ---- Панель ---- */

.panel {
  display: grid;
  grid-template-columns: 340px 1fr;
  height: calc(100vh - var(--topbar-h));
}

/* Ліва колонка */

.sessions {
  border-right: 1px solid var(--border);
  background: var(--surface);
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.sessions-head { padding: 12px; border-bottom: 1px solid var(--border); }
.sessions-head input {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font: inherit;
  outline: none;
}
.sessions-head input:focus { border-color: var(--accent); }

.session-list { flex: 1; overflow-y: auto; }

.session-item {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 10px 12px;
  border: 0;
  border-bottom: 1px solid var(--border);
  background: transparent;
  font: inherit;
  text-align: left;
  cursor: pointer;
}
.session-item:hover { background: var(--bg); }
.session-item.active { background: var(--accent-soft); }

.ch-icon { width: 26px; height: 26px; flex-shrink: 0; }

.session-info { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 2px; }
.session-top { display: flex; align-items: baseline; gap: 8px; }
.session-id {
  flex: 1;
  min-width: 0;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.session-time { color: var(--text-muted); font-size: 12px; flex-shrink: 0; }
.session-preview {
  color: var(--text-muted);
  font-size: 13px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.empty-note { padding: 24px; text-align: center; color: var(--text-muted); }

/* Права колонка */

.chat { display: flex; flex-direction: column; min-height: 0; }

.chat-head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 20px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  min-height: 51px;
}
.chat-title { font-weight: 600; }
.chat-placeholder { color: var(--text-muted); }

.messages {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.day-sep { display: flex; justify-content: center; padding: 6px 0; }
.day-sep span {
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 12px;
}

.msg { max-width: 72%; display: flex; flex-direction: column; gap: 4px; }
.msg.left { align-self: flex-start; }
.msg.right { align-self: flex-end; align-items: flex-end; }

.msg-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-muted);
  padding: 0 4px;
}
.msg-sender { font-weight: 600; }
.msg.sender-bot .msg-sender { color: var(--accent); }
.msg.sender-manager .msg-sender { color: var(--manager); }

.badge {
  padding: 1px 8px;
  border-radius: 999px;
  font-size: 11px;
  border: 1px solid var(--border);
  background: var(--surface);
}
.badge-followup { background: #fffbeb; border-color: #fde68a; color: #92400e; }
.badge-command { font-family: ui-monospace, Consolas, monospace; }

.msg-bubble {
  padding: 9px 13px;
  border-radius: 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  white-space: pre-wrap;
  word-break: break-word;
  line-height: 1.45;
}
.msg.left .msg-bubble { border-bottom-left-radius: 4px; }
.msg.right .msg-bubble { border-bottom-right-radius: 4px; }
.msg.sender-bot .msg-bubble { background: var(--accent-soft); border-color: #c7d2fe; }
.msg.sender-manager .msg-bubble { background: var(--manager-soft); border-color: #a7f3d0; }

/* ---- Share ---- */

.chat-head .spacer { flex: 1; }
.btn-share { white-space: nowrap; flex-shrink: 0; }
.share-note { color: var(--text-muted); font-size: 12px; }

.share-main {
  max-width: 860px;
  width: 100%;
  margin: 0 auto;
}
.share-main .chat-head {
  border: 1px solid var(--border);
  border-top: 0;
  border-radius: 0 0 12px 12px;
}
.share-main .messages { overflow: visible; }

/* ---- Логін ---- */

.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 20px;
}

.login-card {
  width: 100%;
  max-width: 360px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.login-hint { color: var(--text-muted); margin-top: -8px; }

.login-error {
  padding: 10px 14px;
  border-radius: 8px;
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: #b91c1c;
}

.login-card form { display: flex; flex-direction: column; gap: 14px; }
.login-card label { display: flex; flex-direction: column; gap: 6px; color: var(--text-muted); }
.login-card input {
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font: inherit;
  color: var(--text);
  outline: none;
}
.login-card input:focus { border-color: var(--accent); }

.btn-primary {
  padding: 11px;
  border: 0;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}
.btn-primary:hover { filter: brightness(1.08); }