:root {
  --bg: #0a0e13;
  --bg2: #0f1419;
  --bg3: #141920;
  --bg4: #1a1f2e;
  --sky: #ff9900;
  --sky2: #ffb84d;
  --green: #3dcc8e;
  --text: #e4eef8;
  --text2: #8aaec8;
  --text3: #6b8499;
  --border: #1e3050;
  --border2: #2a4060;
  --red: #e85a5a;
  --silk: cubic-bezier(0.16, 1, 0.3, 1);
}

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

html,
body {
  height: 100%;
}

body {
  min-height: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

a {
  color: var(--sky);
  text-decoration: none;
}

.app {
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 0;
  background: var(--bg2);
}

.chat-panel {
  display: none;
  flex: 1;
  min-height: 0;
}

.chat-panel.active {
  display: flex;
  flex-direction: column;
}

.chat-sidebar {
  display: none;
  flex-direction: column;
  background: var(--bg);
  border-right: 1px solid var(--border);
  min-height: 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 20px 20px 16px;
  color: var(--text);
  font-weight: 800;
  letter-spacing: -0.02em;
}

.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--sky), #ea580c);
  display: grid;
  place-items: center;
  font-size: 1.05rem;
}

.sidebar-header {
  padding: 4px 20px 18px;
  border-bottom: 1px solid var(--border);
}

.sidebar-header .tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--sky);
  margin-bottom: 6px;
}

.sidebar-header h2 {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.sidebar-header p {
  margin-top: 4px;
  font-size: 0.85rem;
  color: var(--text2);
}

.sidebar-section {
  padding: 16px 16px 20px;
  flex: 1;
  min-height: 0;
  overflow-y: auto;
}

.sidebar-section h3 {
  margin: 0 0 12px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text3);
}

.online-list {
  list-style: none;
  display: grid;
  gap: 8px;
}

.online-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 10px;
  background: var(--bg2);
  border: 1px solid var(--border);
  font-size: 0.9rem;
}

.online-list li.you {
  border-color: rgba(255, 153, 0, 0.4);
  background: rgba(255, 153, 0, 0.08);
}

.online-list .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 3px rgba(61, 204, 142, 0.16);
  flex-shrink: 0;
}

.chat-main {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  min-width: 0;
}

.chat-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: max(12px, env(safe-area-inset-top, 0px)) 16px 12px;
  background: var(--bg3);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--sky), #ea580c);
  color: #0a1a2c;
  display: grid;
  place-items: center;
  font-weight: 800;
  flex-shrink: 0;
}

.header-info {
  flex: 1;
  min-width: 0;
}

.header-info h2 {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.header-info p {
  margin-top: 2px;
  font-size: 0.78rem;
  color: var(--text2);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.header-info p.disconnected {
  color: #fca5a5;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--border2);
  color: var(--text2);
  padding: 7px 12px;
  border-radius: 8px;
  font: inherit;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
}

.btn-ghost:hover {
  border-color: var(--sky);
  color: var(--sky);
}

.btn-admin {
  display: none;
}

.btn-admin.visible {
  display: inline-flex;
}

.chat-body {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding: 16px 14px 10px;
  background:
    radial-gradient(circle at top left, rgba(255, 153, 0, 0.06), transparent 36%),
    var(--bg2);
}

.message-row {
  display: flex;
  margin-bottom: 10px;
}

.message-row.sent {
  justify-content: flex-end;
}

.message-row.received {
  justify-content: flex-start;
}

.bubble {
  max-width: 78%;
  padding: 9px 12px 7px;
  border-radius: 14px;
  position: relative;
  border: 1px solid transparent;
}

.message-row.sent .bubble {
  background: rgba(255, 153, 0, 0.14);
  border-color: rgba(255, 153, 0, 0.28);
  border-bottom-right-radius: 4px;
}

.message-row.received .bubble {
  background: var(--bg3);
  border-color: var(--border);
  border-bottom-left-radius: 4px;
}

.bubble .sender {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--sky);
  margin-bottom: 2px;
}

body.direct-chat .bubble .sender {
  display: none;
}

.bubble .text {
  font-size: 0.92rem;
  line-height: 1.4;
  white-space: pre-wrap;
  word-break: break-word;
  color: var(--text);
}

.bubble .meta {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 6px;
  margin-top: 4px;
}

.bubble .time {
  font-size: 0.68rem;
  color: var(--text3);
}

.send-status {
  width: 14px;
  height: 14px;
  padding: 0;
  border-radius: 50%;
  flex-shrink: 0;
  border: 2px solid var(--text3);
  border-top-color: var(--sky);
  background: transparent;
  appearance: none;
}

.send-status.sending,
.send-status.retrying {
  animation: send-spin 0.7s linear infinite;
}

.send-status.retrying {
  border-color: var(--sky2);
  border-top-color: var(--sky);
}

.send-status.failed {
  animation: none;
  border: 2px solid var(--red);
  color: var(--red);
  cursor: pointer;
  font-size: 10px;
  font-weight: 800;
  line-height: 1;
  display: grid;
  place-items: center;
}

.send-status.failed::before {
  content: "!";
}

.send-status.sent,
.send-status.delivered,
.send-status.viewed {
  animation: none;
  height: 10px;
  border: 0;
  border-radius: 0;
  position: relative;
  margin: 0;
  cursor: default;
}

.send-status.sent {
  width: 10px;
  color: #8aaec8;
}

.send-status.delivered {
  width: 16px;
  color: #8aaec8;
}

.send-status.viewed {
  width: 16px;
  color: #53bdeb;
}

.send-status.sent::before,
.send-status.delivered::before,
.send-status.delivered::after,
.send-status.viewed::before,
.send-status.viewed::after {
  content: "";
  position: absolute;
  top: 1px;
  width: 7px;
  height: 4px;
  border-left: 1.6px solid currentColor;
  border-bottom: 1.6px solid currentColor;
  transform: rotate(-50deg);
}

.send-status.sent::before,
.send-status.delivered::before,
.send-status.viewed::before {
  left: 0;
}

.send-status.delivered::after,
.send-status.viewed::after {
  left: 4px;
}

@keyframes send-spin {
  to { transform: rotate(360deg); }
}

@media (prefers-reduced-motion: reduce) {
  .send-status.sending,
  .send-status.retrying {
    animation: none;
    border-color: var(--sky);
  }
}

.bubble .actions {
  display: none;
  gap: 4px;
}

.bubble:hover .actions {
  display: inline-flex;
}

.bubble .actions button {
  border: none;
  background: transparent;
  color: var(--text3);
  font-size: 0.72rem;
  cursor: pointer;
  padding: 0 2px;
}

.bubble .actions button:hover {
  color: var(--sky);
}

.system-message {
  background: rgba(20, 25, 32, 0.9);
  color: var(--text2);
  border: 1px solid var(--border);
  font-size: 0.78rem;
  padding: 6px 12px;
  border-radius: 999px;
  margin: 10px auto;
  max-width: 90%;
  text-align: center;
}

.chat-footer {
  background: var(--bg3);
  border-top: 1px solid var(--border);
  padding: 10px 12px max(12px, env(safe-area-inset-bottom, 0px));
  flex-shrink: 0;
}

#typing-indicator {
  min-height: 1.1em;
  font-size: 0.78rem;
  color: var(--sky);
  padding: 0 6px 8px;
}

#chat-form {
  display: flex;
  gap: 8px;
  align-items: center;
}

#message {
  flex: 1;
  height: 46px;
  border: 1px solid var(--border2);
  border-radius: 12px;
  padding: 0 16px;
  font: inherit;
  background: var(--bg);
  color: var(--text);
}

#message:focus {
  outline: 2px solid var(--sky);
  outline-offset: 1px;
  border-color: var(--sky);
}

.btn-send {
  width: 46px;
  height: 46px;
  border: 0;
  border-radius: 12px;
  background: var(--sky);
  color: #0a1a2c;
  font-size: 1.1rem;
  font-weight: 700;
  cursor: pointer;
  display: grid;
  place-items: center;
  flex-shrink: 0;
}

.btn-send:hover {
  background: var(--sky2);
}

.btn-send:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

@media (min-width: 900px) {
  .app {
    height: 100%;
    min-height: 0;
  }

  .chat-panel.active {
    display: grid;
    grid-template-columns: 280px minmax(0, 1fr);
    height: 100%;
  }

  .chat-sidebar {
    display: flex;
  }

  .header-info p {
    white-space: normal;
  }

  .chat-header {
    padding: 14px 20px;
  }

  .chat-body {
    padding: 20px 24px 12px;
  }

  .chat-footer {
    padding: 12px 20px 16px;
  }

  .bubble {
    max-width: min(720px, 72%);
  }
}

.brand-link {
  display: none;
}

@media (max-width: 899px) {
  .header-actions .btn-home {
    display: none;
  }

  .brand-link {
    display: grid;
    place-items: center;
    width: 36px;
    height: 36px;
    padding: 0;
    font-size: 1rem;
  }
}

body.console-chat .app {
  min-height: 0;
  height: auto;
}

body.console-chat .chat-panel,
body.console-chat .chat-panel.active {
  display: flex;
  height: auto;
}

body.console-chat .chat-main {
  min-width: 0;
  display: flex;
  flex-direction: column;
  min-height: 480px;
}

body.console-chat .chat-body {
  flex: 1 1 auto;
  min-height: 320px;
  max-height: 480px;
  overflow-y: auto;
}

body.console-chat .chat-header,
body.console-chat .chat-footer {
  flex-shrink: 0;
}

body.console-chat .sidebar-header {
  padding-top: 20px;
}

@media (min-width: 900px) {
  body.console-chat .chat-panel.active {
    display: grid;
    grid-template-columns: 280px minmax(0, 1fr);
  }
}