:root {
  color-scheme: dark;
  --panel: rgba(13, 18, 34, 0.72);
  --panel-strong: rgba(5, 9, 20, 0.78);
  --line: rgba(148, 163, 184, 0.16);
  --line-strong: rgba(148, 163, 184, 0.24);
  --text: #e5edf7;
  --muted: #91a0b5;
  --good: #35d48b;
  --bad: #fb7185;
  --warn: #fbbf24;
  --accent: #61b6ff;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(97, 182, 255, 0.18), transparent 26%),
    radial-gradient(circle at 80% 15%, rgba(53, 212, 139, 0.10), transparent 22%),
    linear-gradient(180deg, #0d1220 0%, #050814 100%);
  padding: 24px;
  font-family: "Aptos", "Segoe UI", system-ui, sans-serif;
}

.shell {
  width: min(1280px, 100%);
  margin: 0 auto;
  display: grid;
  gap: 18px;
}

.hero,
.grid > div,
.panel,
.log-panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 22px;
  box-shadow:
    0 24px 70px rgba(0, 0, 0, 0.28),
    inset 0 1px 0 rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(16px);
}

.hero {
  padding: 24px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: end;
}

.title h1 {
  margin: 0 0 10px;
  font-size: clamp(26px, 4vw, 38px);
  letter-spacing: -0.04em;
}

.title p {
  margin: 0;
  color: var(--muted);
  line-height: 1.65;
  max-width: 760px;
}

.hero-contact {
  margin-top: 12px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(97, 182, 255, 0.12);
  border: 1px solid rgba(97, 182, 255, 0.22);
  color: #cfe8ff;
  font-size: 13px;
  font-weight: 700;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--warn);
}

.dot.connected {
  background: var(--good);
  box-shadow: 0 0 18px rgba(53, 212, 139, 0.65);
  animation: pulse-green 1.8s ease-in-out infinite;
}

.dot.stopped { background: var(--bad); box-shadow: 0 0 18px rgba(251, 113, 133, 0.7); }
.dot.loading { background: var(--warn); box-shadow: 0 0 18px rgba(251, 191, 36, 0.75); animation: pulse-amber 1.2s ease-in-out infinite; }

.grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; }
.metrics-row { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.metrics-triple { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.dashboard-main { grid-template-columns: 1.2fr 0.8fr; }
.hero-note { letter-spacing: 0.02em; }

.metric,
.log-panel { padding: 18px; }

.metric {
  position: relative;
  overflow: hidden;
  min-height: 128px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border-radius: 22px;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0.01)),
    rgba(13, 18, 34, 0.78);
  border: 1px solid var(--line-strong);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.04),
    0 16px 32px rgba(0, 0, 0, 0.18);
}

.metric::after {
  content: "";
  position: absolute;
  inset: auto -18% -55% auto;
  width: 180px;
  height: 180px;
  background: radial-gradient(circle, rgba(97, 182, 255, 0.12), transparent 68%);
  pointer-events: none;
}

.metric .label {
  color: var(--muted);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  margin-bottom: 10px;
}

.metric .value {
  font-size: 32px;
  font-weight: 850;
  line-height: 1.05;
  letter-spacing: -0.04em;
}

.metric .sub {
  margin-top: 10px;
  color: var(--muted);
  font-size: 13px;
}

.connection-card .value {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 24px;
}

.connection-card .dot {
  flex: 0 0 auto;
  width: 14px;
  height: 14px;
  border-radius: 999px;
}

.connection-card #liveText {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.controls { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; justify-content: space-between; padding: 18px; }
.buttons { display: flex; flex-wrap: wrap; gap: 12px; }
button {
  appearance: none;
  border: 0;
  border-radius: 14px;
  padding: 12px 18px;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.15s ease, opacity 0.15s ease;
}
button:hover { transform: translateY(-1px); }
button:disabled { opacity: 0.6; cursor: wait; }
.primary { background: linear-gradient(135deg, #67c5ff, #2563eb); color: white; }
.success { background: linear-gradient(135deg, #35d48b, #059669); color: white; }
.danger { background: linear-gradient(135deg, #fb7185, #e11d48); color: white; }
.ghost {
  background: rgba(148, 163, 184, 0.12);
  color: var(--text);
  border: 1px solid rgba(148, 163, 184, 0.18);
}

.panel { padding: 18px; }
.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}
.message-panel { position: relative; overflow: hidden; }
.message-glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top right, rgba(97, 182, 255, 0.18), transparent 35%), radial-gradient(circle at bottom left, rgba(124, 58, 237, 0.14), transparent 30%);
  pointer-events: none;
}
.message-badge {
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(97, 182, 255, 0.12);
  border: 1px solid rgba(97, 182, 255, 0.22);
  color: #cfe8ff;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.panel-head h2 { margin: 0; font-size: 18px; }
.small { color: var(--muted); font-size: 13px; }

pre {
  margin: 0;
  white-space: pre-wrap;
  font-family: ui-monospace, SFMono-Regular, Consolas, Monaco, monospace;
  font-size: 13px;
  line-height: 1.7;
  background: var(--panel-strong);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 16px;
  min-height: 220px;
  overflow: auto;
}

.log-list { display: grid; gap: 10px; max-height: 520px; overflow: auto; }
.log-item {
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(5, 9, 20, 0.58);
  color: #cbd5e1;
  font-family: ui-monospace, SFMono-Regular, Consolas, Monaco, monospace;
  font-size: 13px;
  line-height: 1.6;
}

@keyframes pulse-green {
  0%, 100% { transform: scale(1); box-shadow: 0 0 0 rgba(53, 212, 139, 0.0); }
  50% { transform: scale(1.12); box-shadow: 0 0 18px rgba(53, 212, 139, 0.65); }
}
@keyframes pulse-amber {
  0%, 100% { transform: scale(1); box-shadow: 0 0 0 rgba(251, 191, 36, 0.0); }
  50% { transform: scale(1.12); box-shadow: 0 0 18px rgba(251, 191, 36, 0.68); }
}

@media (max-width: 900px) {
  .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .metrics-triple,
  .dashboard-main { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero { flex-direction: column; align-items: start; }
}

@media (max-width: 640px) {
  body { padding: 14px; }
  .grid,
  .metrics-triple,
  .dashboard-main { grid-template-columns: 1fr; }
  .buttons { width: 100%; }
  button { flex: 1; min-width: 88px; }
  .message-row { grid-template-columns: 1fr; }
}

.message-panel { padding: 20px; }
.message-form { display: grid; gap: 12px; margin-bottom: 16px; }
.message-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.message-form input,
.message-form textarea,
.message-form select {
  width: 100%;
  border-radius: 14px;
  border: 1px solid rgba(148, 163, 184, 0.16);
  background: rgba(5, 9, 20, 0.58);
  color: var(--text);
  padding: 12px 14px;
  outline: none;
}
.message-form textarea { min-height: 110px; resize: vertical; }
.message-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
}
.admin-switch {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 13px;
}
.admin-switch input { accent-color: #38bdf8; }
.message-list { display: grid; gap: 12px; }
.message-item {
  padding: 14px 16px;
  border-radius: 16px;
  background: rgba(5, 9, 20, 0.58);
  border: 1px solid rgba(148, 163, 184, 0.16);
}
.message-meta {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
  color: #cbd5e1;
  font-size: 13px;
}
.message-content { line-height: 1.7; color: #e2e8f0; white-space: pre-wrap; }
.message-reply {
  margin-top: 10px;
  padding: 10px 12px;
  border-left: 3px solid #38bdf8;
  background: rgba(56, 189, 248, 0.08);
  border-radius: 12px;
  color: #bfdbfe;
  font-size: 13px;
}
.message-admin-actions { display: flex; gap: 8px; margin-top: 12px; }
.message-admin-actions button { padding: 8px 12px; border-radius: 999px; font-size: 13px; }
.reply-pick-btn { padding: 8px 12px; border-radius: 999px; font-size: 12px; }
.danger-btn { background: linear-gradient(135deg, #fb7185, #e11d48); color: white; }