:root {
  color-scheme: light;
  --bg: #f4f6f8;
  --panel: #ffffff;
  --line: #d9dee7;
  --text: #202631;
  --muted: #667085;
  --accent: #2364aa;
  --accent-strong: #174a7c;
  --ok: #1f7a4d;
  --danger: #b42318;
  --chip: #eef2f6;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: Arial, Helvetica, sans-serif;
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
  border-radius: 6px;
  padding: 9px 12px;
  cursor: pointer;
}

button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

button.danger {
  color: var(--danger);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 10px 11px;
  background: #fff;
  color: var(--text);
}

label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 13px;
}

.check-row {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text);
}

.check-row input {
  width: auto;
}

.login-screen {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.login-box {
  width: min(420px, 100%);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 24px;
  display: grid;
  gap: 16px;
  box-shadow: 0 12px 35px rgba(32, 38, 49, 0.08);
}

.login-box h1 {
  margin: 0;
  font-size: 26px;
}

.hint {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.45;
}

.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 320px minmax(0, 1fr) 340px;
}

.app-shell.no-admin {
  grid-template-columns: 320px minmax(0, 1fr);
}

.sidebar,
.admin-panel,
.chat-area {
  min-height: 100vh;
}

.sidebar,
.admin-panel {
  background: var(--panel);
  border-right: 1px solid var(--line);
  overflow: auto;
}

.admin-panel {
  border-right: 0;
  border-left: 1px solid var(--line);
}

.topbar,
.panel-head {
  min-height: 64px;
  border-bottom: 1px solid var(--line);
  padding: 14px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.brand {
  display: grid;
  gap: 2px;
}

.brand strong {
  font-size: 18px;
}

.role-pill,
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  width: fit-content;
  border-radius: 999px;
  padding: 4px 8px;
  background: var(--chip);
  color: var(--muted);
  font-size: 12px;
}

.employee-list {
  padding: 10px;
  display: grid;
  gap: 6px;
}

.employee-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 6px;
  align-items: stretch;
}

.employee-item {
  width: 100%;
  text-align: left;
  display: grid;
  gap: 4px;
  border: 1px solid transparent;
  background: transparent;
  padding: 10px;
}

.employee-item.active {
  border-color: var(--accent);
  background: #edf5ff;
}

.employee-name {
  font-weight: 700;
}

.employee-meta {
  display: flex;
  gap: 8px;
  align-items: center;
  color: var(--muted);
  font-size: 12px;
}

button.icon {
  width: 38px;
  min-height: 38px;
  display: grid;
  place-items: center;
  padding: 0;
  font-size: 20px;
}

.contact-branch {
  display: grid;
  gap: 6px;
}

.tree-node {
  display: grid;
  gap: 6px;
}

.tree-children {
  margin-left: 16px;
  padding-left: 10px;
  border-left: 1px solid var(--line);
  display: grid;
  gap: 6px;
}

.chat-area {
  display: grid;
  grid-template-rows: auto auto minmax(0, 1fr) auto;
}

.contact-switcher {
  display: none;
  overflow-x: auto;
  gap: 8px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  background: var(--panel);
}

.contact-switcher button {
  min-width: 140px;
  display: grid;
  gap: 2px;
  text-align: left;
  white-space: nowrap;
}

.contact-switcher span {
  font-size: 11px;
  color: var(--muted);
}

.contact-switcher button.primary span {
  color: rgba(255, 255, 255, 0.82);
}

.master-switcher {
  position: sticky;
  top: 0;
  z-index: 3;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) auto;
  gap: 8px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  background: var(--panel);
  box-shadow: 0 6px 18px rgba(32, 38, 49, 0.06);
}

.master-switcher button {
  min-height: 46px;
}

.master-switcher button:not(.master-bell) {
  display: grid;
  gap: 2px;
  text-align: center;
}

.master-switcher span {
  min-width: 0;
  font-size: 11px;
  color: var(--muted);
}

.master-switcher strong {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.master-switcher button.primary span {
  color: rgba(255, 255, 255, 0.82);
}

.master-bell {
  width: 48px;
  padding: 0;
  display: grid;
  place-items: center;
}

.chat-empty {
  display: grid;
  place-items: center;
  text-align: center;
  color: var(--muted);
  padding: 24px;
}

.messages {
  overflow: auto;
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.message {
  max-width: min(680px, 78%);
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 8px;
  padding: 10px 12px;
  display: grid;
  gap: 8px;
}

.message.mine {
  align-self: flex-end;
  background: #eaf4ff;
  border-color: #bdd9f6;
}

.message-text {
  white-space: pre-wrap;
  line-height: 1.4;
}

.message-foot {
  color: var(--muted);
  font-size: 12px;
  display: flex;
  gap: 10px;
  justify-content: flex-end;
}

.attachments {
  display: grid;
  gap: 8px;
}

.attachment-image {
  display: block;
  max-width: 280px;
  max-height: 240px;
  border-radius: 6px;
  border: 1px solid var(--line);
}

.attachment-link {
  color: var(--accent-strong);
}

.composer {
  border-top: 1px solid var(--line);
  padding: 12px;
  background: var(--panel);
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
}

.composer textarea {
  min-height: 44px;
  max-height: 140px;
  resize: vertical;
}

.composer-actions {
  display: flex;
  gap: 8px;
  align-items: start;
}

.admin-body {
  padding: 14px;
  display: grid;
  gap: 16px;
}

.form-grid {
  display: grid;
  gap: 10px;
}

.admin-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  display: grid;
  gap: 10px;
}

.admin-card h2 {
  margin: 0;
  font-size: 17px;
}

.row {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

.error {
  color: var(--danger);
  font-size: 13px;
}

.ok {
  color: var(--ok);
  font-size: 13px;
}

.mobile-tabs {
  display: none;
}

@media (max-width: 980px) {
  .app-shell {
    grid-template-columns: 1fr;
    grid-template-rows: minmax(0, 1fr);
  }

  .mobile-tabs {
    display: none;
  }

  .app-shell:not(.no-admin) .mobile-tabs {
    display: flex;
    position: sticky;
    top: 0;
    z-index: 2;
    background: var(--panel);
    border-bottom: 1px solid var(--line);
    padding: 8px;
    gap: 8px;
  }

  .sidebar,
  .admin-panel,
  .chat-area {
    display: none;
    min-height: 100vh;
  }

  .app-shell:not(.no-admin) .chat-area,
  .app-shell:not(.no-admin) .admin-panel {
    min-height: calc(100vh - 49px);
  }

  .chat-area.active {
    display: grid;
  }

  .contact-switcher {
    display: flex;
  }

  .topbar {
    min-height: 58px;
    padding: 10px 12px;
  }

  .brand strong {
    font-size: 16px;
  }

  .messages {
    padding: 12px;
  }

  .message {
    max-width: 92%;
  }

  .composer {
    grid-template-columns: minmax(0, 1fr) auto;
    padding: 10px;
  }

  .composer textarea {
    min-height: 42px;
  }
}