:root {
  --bg: #0b1020;
  --panel: rgba(255, 255, 255, 0.06);
  --text: rgba(255, 255, 255, 0.92);
  --muted: rgba(255, 255, 255, 0.65);
  --border: rgba(255, 255, 255, 0.10);
  --accent: #5b7cfe;
  --danger: #f25555;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: radial-gradient(1200px 800px at 10% 10%, #15204a 0%, var(--bg) 60%);
  color: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Apple Color Emoji",
    "Segoe UI Emoji";
}

.app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(10px);
}

.brand {
  font-weight: 650;
  letter-spacing: 0.2px;
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

.auth-status {
  font-size: 12px;
  color: var(--muted);
}

.main {
  flex: 1;
  display: flex;
  justify-content: center;
  padding: 16px;
}

.panel {
  width: min(900px, 100%);
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-height: 70vh;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
}

.panel-title {
  font-weight: 600;
}

.messages {
  flex: 1;
  padding: 14px;
  overflow: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.msg {
  max-width: 80%;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
  white-space: pre-wrap;
  word-wrap: break-word;
  line-height: 1.35;
}

.msg.user {
  align-self: flex-end;
  background: rgba(91, 124, 254, 0.18);
}

.msg.partner {
  align-self: flex-start;
  background: rgba(255, 255, 255, 0.06);
}

.msg.pending {
  color: var(--muted);
  font-style: italic;
}

.typing-dots span {
  display: inline-block;
  opacity: 0.2;
  animation: typing-dot 1.2s infinite;
}

.typing-dots span:nth-child(2) {
  animation-delay: 0.2s;
}

.typing-dots span:nth-child(3) {
  animation-delay: 0.4s;
}

.composer-input:disabled {
  opacity: 0.6;
}

.btn:disabled {
  opacity: 0.6;
  pointer-events: none;
}

.msg-meta {
  margin-top: 6px;
  font-size: 11px;
  color: var(--muted);
}

.composer {
  display: flex;
  gap: 10px;
  padding: 12px 14px;
  border-top: 1px solid var(--border);
}

.composer-input {
  flex: 1;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.20);
  color: var(--text);
  padding: 10px 12px;
  outline: none;
}

.btn {
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
  border-radius: 12px;
  padding: 10px 12px;
  cursor: pointer;
}

.btn:hover {
  border-color: rgba(255, 255, 255, 0.20);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
}

.btn-danger {
  background: rgba(242, 85, 85, 0.14);
  border-color: rgba(242, 85, 85, 0.25);
}

.btn-small {
  padding: 8px 10px;
  border-radius: 10px;
  font-size: 12px;
}

.notice {
  padding: 10px 14px;
  font-size: 13px;
  color: var(--muted);
}

.hidden {
  display: none !important;
}

@keyframes typing-dot {
  0%,
  100% {
    opacity: 0.2;
  }
  50% {
    opacity: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .typing-dots span {
    animation: none;
    opacity: 0.6;
  }
}