:root {
  color-scheme: light;
  --bg: #efeae2;
  --bg-top: #0b8f76;
  --panel: rgba(255, 255, 255, 0.98);
  --panel-strong: #ffffff;
  --surface: #f7f5f1;
  --line: #d7dcd6;
  --line-strong: #c6d0cb;
  --ink: #111b21;
  --muted: #667781;
  --accent: #00a884;
  --accent-strong: #017561;
  --accent-soft: #d9fdd3;
  --accent-ghost: #eefaf7;
  --danger: #d64b4b;
  --danger-soft: #fdeaea;
  --warning: #f6d365;
  --shadow: 0 18px 45px rgba(17, 27, 33, 0.1);
  --radius: 22px;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
}

body {
  margin: 0;
  font-family: "Segoe UI", "Helvetica Neue", Helvetica, Arial, sans-serif;
  color: var(--ink);
  background:
    linear-gradient(180deg, var(--bg-top) 0 150px, var(--bg) 150px 100%),
    radial-gradient(circle at top right, rgba(255, 255, 255, 0.16) 0, transparent 28%);
}

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

a {
  color: inherit;
}

.shell {
  width: min(1520px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 24px 0 28px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: center;
  margin-bottom: 22px;
  padding: 22px 24px;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.95);
  box-shadow: var(--shadow);
}

.topbar h1,
.panel h2 {
  margin: 0;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.session-picker {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.shell input,
.shell textarea,
.shell select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
  color: var(--ink);
}

.shell input,
.shell select {
  padding: 12px 14px;
}

.shell textarea {
  resize: vertical;
  min-height: 72px;
  padding: 14px 16px;
}

.shell input:focus,
.shell textarea:focus,
.shell select:focus {
  outline: none;
  border-color: rgba(0, 168, 132, 0.58);
  box-shadow: 0 0 0 4px rgba(0, 168, 132, 0.1);
}

.panel {
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow);
  border: 1px solid rgba(17, 27, 33, 0.05);
}

.chat-layout {
  display: grid;
  grid-template-columns: 360px minmax(0, 1fr);
  gap: 22px;
  min-height: calc(100vh - 170px);
}

.sidebar,
.chat-panel,
.session-list-panel,
.session-detail-panel,
.settings-panel {
  padding: 20px;
}

.panel-head {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  align-items: flex-start;
  margin-bottom: 16px;
}

.muted {
  margin: 6px 0 0;
  color: var(--muted);
}

.notice {
  margin: 0;
  color: var(--muted);
  min-height: 20px;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 34px;
  padding: 0 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  text-transform: lowercase;
}

.status-idle {
  background: #eff3f5;
  color: #55636d;
}

.status-connecting,
.status-qr {
  background: #fff2d6;
  color: #9a6700;
}

.status-connected {
  background: #e6f7ef;
  color: #137d5d;
}

.status-disconnected,
.status-logged_out {
  background: #fdeaea;
  color: #b73e3e;
}

.action-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 16px;
  border-radius: 12px;
  text-decoration: none;
  color: var(--ink);
  background: #f0f2f5;
  border: 1px solid var(--line);
  font-weight: 700;
}

.action-button {
  border: 1px solid transparent;
  border-radius: 14px;
  padding: 12px 18px;
  font-weight: 700;
  cursor: pointer;
  background: #2f80ed;
  color: #fff;
  transition: transform 0.18s ease, background-color 0.18s ease, border-color 0.18s ease;
}

.action-button:hover {
  transform: translateY(-1px);
}

.action-button.secondary {
  background: #f0f2f5;
  color: var(--ink);
  border-color: var(--line);
}

.action-button.danger {
  background: var(--danger);
}

.action-button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
}

.conversation-list,
.session-list,
.message-list {
  display: grid;
  gap: 10px;
}

.conversation-list,
.session-list {
  margin-top: 14px;
  max-height: calc(100vh - 310px);
  overflow: auto;
  padding-right: 6px;
}

.conversation-card,
.session-card {
  width: 100%;
  text-align: left;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 16px;
  background: #fff;
  color: var(--ink);
  cursor: pointer;
  transition: background-color 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.conversation-card:hover,
.session-card:hover {
  background: #fbfbfb;
  border-color: var(--line-strong);
}

.conversation-card.active,
.session-card.active {
  border-color: #2f80ed;
  background: #f6fbff;
  box-shadow: inset 0 0 0 1px rgba(47, 128, 237, 0.12);
}

.conversation-top,
.session-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
}

.conversation-card strong,
.session-card strong {
  display: block;
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
}

.card-meta {
  margin: 0;
  color: var(--muted);
  line-height: 1.4;
}

.preview {
  margin: 10px 0 0;
  color: #33434c;
  font-weight: 600;
  line-height: 1.35;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
}

.conversation-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 28px;
  height: 28px;
  padding: 0 8px;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
}

.chat-panel {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  gap: 18px;
  min-height: 0;
}

.chat-header {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
}

.chat-header h2 {
  margin-bottom: 6px;
}

.message-list {
  min-height: 0;
  max-height: calc(100vh - 360px);
  overflow: auto;
  padding: 18px;
  border-radius: 20px;
  background:
    linear-gradient(rgba(246, 244, 239, 0.92), rgba(246, 244, 239, 0.92)),
    radial-gradient(circle at 1px 1px, rgba(17, 27, 33, 0.045) 1px, transparent 0);
  background-size: auto, 22px 22px;
}

.message {
  display: grid;
  gap: 10px;
  width: fit-content;
  max-width: min(680px, 82%);
  margin-bottom: 12px;
  padding: 12px 14px;
  border-radius: 18px;
  border: 1px solid rgba(17, 27, 33, 0.08);
  background: #fff;
  box-shadow: 0 2px 10px rgba(17, 27, 33, 0.04);
}

.message.in {
  justify-self: start;
}

.message.out {
  justify-self: end;
  background: var(--accent-soft);
  border-color: rgba(0, 168, 132, 0.18);
}

.message-text {
  margin: 0;
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-word;
}

.message-media {
  display: grid;
  gap: 10px;
}

.message-media img,
.message-media video {
  display: block;
  max-width: min(420px, 100%);
  border-radius: 16px;
  background: rgba(17, 27, 33, 0.06);
}

.message-media audio {
  width: min(360px, 100%);
}

.message-media.sticker img {
  max-width: 180px;
  background: transparent;
}

.document-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border-radius: 14px;
  text-decoration: none;
  background: rgba(17, 27, 33, 0.05);
  color: var(--ink);
  font-weight: 700;
}

.document-link small {
  display: block;
  color: var(--muted);
  font-weight: 500;
}

.message-meta {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
}

.composer {
  display: grid;
  gap: 12px;
}

.composer-toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.file-button {
  min-width: 100px;
}

.file-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 12px;
  border-radius: 999px;
  background: var(--accent-ghost);
  color: var(--ink);
}

.chip-clear {
  border: 0;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  text-transform: uppercase;
  font-size: 11px;
  font-weight: 700;
}

.empty {
  margin: 0;
  color: var(--muted);
}

.sessions-layout {
  display: grid;
  grid-template-columns: 360px minmax(0, 1fr);
  gap: 22px;
}

.sessions-workspace {
  display: grid;
  gap: 22px;
  min-width: 0;
}

.inline-form {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
}

.session-detail-grid {
  display: grid;
  grid-template-columns: minmax(260px, 380px) minmax(0, 1fr);
  gap: 20px;
  align-items: start;
}

.qr-stage {
  min-height: 340px;
  display: grid;
  place-items: center;
  padding: 18px;
  border-radius: 22px;
  border: 2px dashed #bfd2e8;
  background: #f7fbff;
}

.qr-stage img {
  display: block;
  max-width: 100%;
  height: auto;
}

.session-side {
  display: grid;
  gap: 18px;
}

.stats-grid {
  margin: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.stats-grid div {
  padding: 14px 16px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: var(--surface);
}

.stats-grid dt {
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.stats-grid dd {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 700;
}

.action-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.settings-form {
  display: grid;
  gap: 18px;
}

.field-group {
  display: grid;
  gap: 10px;
}

.field-group > span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.settings-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.setting-toggle {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 18px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: var(--surface);
}

.setting-toggle.compact {
  min-height: 100%;
}

.setting-toggle.full-span {
  grid-column: 1 / -1;
}

.setting-toggle input[type="checkbox"] {
  width: 18px;
  height: 18px;
  margin: 2px 0 0;
  padding: 0;
  border-radius: 6px;
  accent-color: var(--accent);
  flex: 0 0 auto;
  box-shadow: none;
}

.setting-copy {
  display: grid;
  gap: 4px;
}

.setting-copy strong {
  font-size: 0.98rem;
}

.setting-copy small {
  color: var(--muted);
  line-height: 1.4;
}

.settings-footer {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.settings-footer .notice {
  flex: 1 1 280px;
}

.session-list::-webkit-scrollbar,
.conversation-list::-webkit-scrollbar,
.message-list::-webkit-scrollbar {
  width: 10px;
}

.session-list::-webkit-scrollbar-thumb,
.conversation-list::-webkit-scrollbar-thumb,
.message-list::-webkit-scrollbar-thumb {
  background: rgba(102, 119, 129, 0.3);
  border: 2px solid transparent;
  background-clip: padding-box;
  border-radius: 999px;
}

@media (max-width: 1160px) {
  .chat-layout,
  .sessions-layout,
  .session-detail-grid {
    grid-template-columns: 1fr;
  }

  .message-list,
  .conversation-list,
  .session-list {
    max-height: none;
  }
}

@media (max-width: 760px) {
  .shell {
    width: min(100vw - 16px, 100%);
    padding-top: 12px;
  }

  .topbar,
  .sidebar,
  .chat-panel,
  .session-list-panel,
  .session-detail-panel,
  .settings-panel {
    padding: 16px;
  }

  .topbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .topbar-actions,
  .composer-toolbar,
  .action-row {
    width: 100%;
    justify-content: stretch;
  }

  .topbar-actions > * ,
  .composer-toolbar > *,
  .action-row > * {
    flex: 1 1 100%;
  }

  .inline-form,
  .stats-grid,
  .settings-grid {
    grid-template-columns: 1fr;
  }

  .message {
    max-width: 92%;
  }

  .message-media img,
  .message-media video,
  .message-media audio {
    max-width: 100%;
    width: 100%;
  }
}