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

:root {
  /* MTF 标准粉蓝白 */
  --mtf-pink: #F5A9B8;
  --mtf-blue: #5BCEFA;
  --mtf-white: #FFFFFF;
  --bg: #f7f0f5;
  --surface: #ffffff;
  --border: #f0d6e8;
  --text: #3a2a3a;
  --text-muted: #a07090;
  --green: #5BCEFA;
  --radius: 16px;
  --shadow: 0 4px 24px rgba(245, 169, 184, 0.15);
}

body {
  background: linear-gradient(160deg, #e8f6fd 0%, #fde8f0 100%);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Segoe UI', 'PingFang SC', system-ui, sans-serif;
  color: var(--text);
  padding: 2rem 1rem;
}

.container {
  width: 100%;
  max-width: 480px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

/* Header */
.site-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  text-align: center;
}

.avatar {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--mtf-white);
  box-shadow: 0 0 0 3px var(--mtf-pink), 0 6px 20px rgba(245, 169, 184, 0.3);
}

.site-title {
  font-size: 1.7rem;
  font-weight: 700;
  background: linear-gradient(90deg, var(--mtf-pink), var(--mtf-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 0.04em;
}

.status-hint {
  font-size: 0.9rem;
  color: var(--text-muted);
  background: var(--surface);
  border: 1.5px solid var(--mtf-pink);
  border-radius: 999px;
  padding: 0.35rem 1.1rem;
  box-shadow: var(--shadow);
}

.status-hint.online {
  color: #2a7a9a;
  border-color: var(--mtf-blue);
  background: #eef9fd;
}

.site-note {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-align: center;
}

/* Devices */
.devices {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.loading {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
  padding: 1.5rem 0;
}

.device-card {
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  box-shadow: var(--shadow);
  transition: transform 0.15s, box-shadow 0.15s;
}

.device-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(245, 169, 184, 0.22);
}

.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.status-dot.online {
  background: var(--mtf-blue);
  box-shadow: 0 0 8px var(--mtf-blue);
}

.status-dot.offline {
  background: #ddc8d8;
}

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

.device-name {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text);
}

.device-status {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.device-time {
  font-size: 0.78rem;
  color: #2a7a9a;
  flex-shrink: 0;
  background: #e8f6fd;
  padding: 0.2rem 0.65rem;
  border-radius: 999px;
}

/* Footer links */
.site-footer {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
}

.footer-links {
  display: flex;
  gap: 1.2rem;
}

.footer-links a {
  font-size: 0.82rem;
  color: var(--mtf-pink);
  text-decoration: none;
  transition: color 0.2s;
}

.footer-links a:hover {
  color: var(--mtf-blue);
}

.ws-status {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.ws-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  display: inline-block;
}

.ws-dot.connected { background: var(--mtf-blue); }
.ws-dot.disconnected { background: var(--mtf-pink); }

/* ===== Panel ===== */
.panel-body {
  background: linear-gradient(160deg, #e8f6fd 0%, #fde8f0 100%);
  min-height: 100vh;
  padding: 2rem 1rem;
  font-family: 'Segoe UI', 'PingFang SC', system-ui, sans-serif;
  color: var(--text);
  display: flex;
  align-items: flex-start;
  justify-content: center;
}

.panel-container {
  width: 100%;
  max-width: 520px;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.panel-header {
  text-align: center;
  padding: 0.5rem 0 0.25rem;
}

.panel-header h1 {
  font-size: 1.4rem;
  font-weight: 700;
  background: linear-gradient(90deg, var(--mtf-pink), var(--mtf-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.card {
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.4rem;
  box-shadow: var(--shadow);
}

.card h2 {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--mtf-pink);
  margin-bottom: 1rem;
}

input[type="text"],
input[type="password"] {
  width: 100%;
  background: #fdf5f9;
  border: 1.5px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  padding: 0.6rem 0.9rem;
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

input:focus {
  border-color: var(--mtf-blue);
  box-shadow: 0 0 0 3px rgba(91, 206, 250, 0.15);
}

button {
  background: linear-gradient(90deg, var(--mtf-pink), var(--mtf-blue));
  color: #fff;
  border: none;
  border-radius: 10px;
  padding: 0.58rem 1.3rem;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.2s;
  white-space: nowrap;
}

button:hover { opacity: 0.85; }

button.danger {
  background: linear-gradient(90deg, #f87171, #fb923c);
}

button.secondary {
  background: #fdf5f9;
  border: 1.5px solid var(--border);
  color: var(--text);
}

.toggle {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
  font-size: 0.9rem;
}

.toggle input[type="checkbox"] {
  width: 38px;
  height: 22px;
  appearance: none;
  background: #f0d6e8;
  border-radius: 22px;
  cursor: pointer;
  position: relative;
  transition: background 0.2s;
  flex-shrink: 0;
}

.toggle input[type="checkbox"]:checked {
  background: linear-gradient(90deg, var(--mtf-pink), var(--mtf-blue));
}

.toggle input[type="checkbox"]::after {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  background: #fff;
  border-radius: 50%;
  top: 3px;
  left: 3px;
  transition: left 0.2s;
  box-shadow: 0 1px 4px rgba(0,0,0,0.15);
}

.toggle input[type="checkbox"]:checked::after {
  left: 19px;
}

.device-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--border);
}

.device-row:last-child { border-bottom: none; }

.device-row-info .name {
  font-size: 0.9rem;
  font-weight: 600;
}

.device-row-info .meta {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 0.1rem;
}

.form-row {
  display: flex;
  gap: 0.5rem;
}

.form-row input { flex: 1; }

.msg {
  font-size: 0.82rem;
  margin-top: 0.6rem;
  color: var(--text-muted);
}

.msg.ok { color: #2a7a9a; }
.msg.err { color: #e05a7a; }

.panel-logout {
  text-align: center;
  margin-top: 0.5rem;
}

.panel-logout button {
  background: none;
  border: 1.5px solid var(--border);
  color: var(--text-muted);
  font-size: 0.82rem;
  padding: 0.4rem 1rem;
}