:root {
  --bg0: #0c1210;
  --bg1: #121a17;
  --bg2: #1a2621;
  --line: #2a3a33;
  --text: #e8f0eb;
  --muted: #8aa396;
  --accent: #3dd68c;
  --accent-dim: #1f8f5a;
  --warn: #e8a54b;
  --err: #e86a5c;
  --font: "DM Sans", system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  font-family: var(--font);
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 10% -10%, #1a3d2e 0%, transparent 55%),
    radial-gradient(900px 500px at 100% 0%, #152028 0%, transparent 50%),
    linear-gradient(180deg, var(--bg0), #0a0f0d 100%);
  background-attachment: fixed;
}

.hidden { display: none !important; }
.mono { font-family: var(--mono); }
.muted { color: var(--muted); }
.error { color: var(--err); margin-top: 0.75rem; font-size: 0.9rem; }
.mt { margin-top: 1.5rem; }

.brand {
  margin: 0;
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
}

.login-view {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 1.5rem;
}
.login-panel {
  width: min(400px, 100%);
  padding: 2rem;
  background: color-mix(in srgb, var(--bg1) 88%, transparent);
  border: 1px solid var(--line);
  backdrop-filter: blur(8px);
}
.login-panel h1 {
  margin: 0.35rem 0 0.5rem;
  font-size: 1.75rem;
  font-weight: 600;
}
.login-panel .sub {
  margin: 0 0 1.5rem;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.45;
}
.login-panel label {
  display: block;
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 0.35rem;
}
.login-panel input {
  width: 100%;
  padding: 0.75rem 0.85rem;
  border: 1px solid var(--line);
  background: var(--bg0);
  color: var(--text);
  font: inherit;
  margin-bottom: 1rem;
}
.login-panel button,
.chat-form button,
.ghost {
  font: inherit;
  cursor: pointer;
  border: 1px solid var(--accent-dim);
  background: var(--accent);
  color: #062015;
  font-weight: 600;
  padding: 0.7rem 1rem;
}
.login-panel button { width: 100%; }
.ghost {
  background: transparent;
  color: var(--muted);
  border-color: var(--line);
  padding: 0.45rem 0.75rem;
  font-size: 0.85rem;
}
.ghost:hover { color: var(--text); border-color: var(--muted); }

.app-view {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1.25rem 1.25rem 2.5rem;
  animation: fadeIn 0.45s ease;
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}

.top {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 1rem;
  margin-bottom: 1.25rem;
}
.top h1 {
  margin: 0.2rem 0 0;
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  font-weight: 600;
}
.top-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.stats {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.65rem;
  margin-bottom: 1.25rem;
}
.stat {
  background: var(--bg1);
  border: 1px solid var(--line);
  padding: 0.85rem 0.9rem;
  min-height: 4.5rem;
}
.stat .label {
  display: block;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.35rem;
}
.stat strong {
  font-size: 1.15rem;
  font-weight: 600;
  font-family: var(--mono);
}

.main {
  display: grid;
  grid-template-columns: 0.95fr 1.2fr;
  gap: 1rem;
}
.panel {
  background: color-mix(in srgb, var(--bg1) 92%, transparent);
  border: 1px solid var(--line);
  padding: 1rem 1.1rem 1.15rem;
}
.panel h2 {
  margin: 0 0 0.65rem;
  font-size: 0.95rem;
  font-weight: 600;
}
.hint {
  margin: 0 0 0.85rem;
  color: var(--muted);
  font-size: 0.85rem;
  line-height: 1.4;
}

.links {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.links a {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text);
  padding: 0.55rem 0.65rem;
  border: 1px solid transparent;
  border-bottom: 1px solid var(--line);
  transition: border-color 0.15s, background 0.15s;
}
.links a:hover {
  background: var(--bg2);
  border-color: var(--line);
}
.links a span:last-child {
  color: var(--muted);
  font-size: 0.8rem;
  white-space: nowrap;
}

.containers {
  font-size: 0.75rem;
  line-height: 1.55;
  max-height: 280px;
  overflow: auto;
  color: var(--muted);
}
.containers .up { color: var(--accent); }
.containers .down { color: var(--err); }

.chat {
  height: min(420px, 50vh);
  overflow: auto;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  padding: 0.25rem 0 0.75rem;
  border-bottom: 1px solid var(--line);
  margin-bottom: 0.75rem;
}
.bubble {
  max-width: 92%;
  padding: 0.65rem 0.8rem;
  font-size: 0.92rem;
  line-height: 1.45;
  white-space: pre-wrap;
  word-break: break-word;
}
.bubble.user {
  align-self: flex-end;
  background: var(--bg2);
  border: 1px solid var(--line);
}
.bubble.bot {
  align-self: flex-start;
  background: #0e1a15;
  border: 1px solid color-mix(in srgb, var(--accent) 28%, var(--line));
}
.bubble .meta {
  display: block;
  font-size: 0.7rem;
  color: var(--muted);
  margin-bottom: 0.25rem;
  font-family: var(--mono);
}
.chat-form {
  display: flex;
  gap: 0.5rem;
}
.chat-form input {
  flex: 1;
  padding: 0.7rem 0.8rem;
  border: 1px solid var(--line);
  background: var(--bg0);
  color: var(--text);
  font: inherit;
}
.chat-form button:disabled {
  opacity: 0.55;
  cursor: wait;
}

@media (max-width: 860px) {
  .stats { grid-template-columns: repeat(2, 1fr); }
  .main { grid-template-columns: 1fr; }
  .top { flex-direction: column; align-items: flex-start; }
}