:root {
  --primary-color: #0066cc;
  --danger-color: #cc0000;
  --success-color: #00cc00;
  --background-color: #f9f9f9;
  --text-color: #333;
  --border-color: #ddd;
  --shadow-color: rgba(0, 0, 0, 0.1);
}

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

body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 20px;
  color: var(--text-color);
  background-color: #f0f0f0;
  line-height: 1.6;
}

h1 {
  color: var(--primary-color);
  margin-bottom: 20px;
  text-align: center;
}

h2 {
  color: var(--primary-color);
  margin-bottom: 15px;
  font-size: 1.5rem;
}

h3 {
  margin-bottom: 10px;
  color: var(--text-color);
}

.container {
  max-width: 800px;
  margin: 0 auto;
}

.card {
  background: var(--background-color);
  border-radius: 8px;
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: 0 2px 4px var(--shadow-color);
}

.btn {
  background: var(--primary-color);
  color: white;
  border: none;
  padding: 10px 15px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 1rem;
  transition: background-color 0.3s;
}

.btn:hover {
  opacity: 0.9;
}

.btn-danger {
  background: var(--danger-color);
}

.btn-small {
  padding: 6px 12px;
  font-size: 0.85rem;
}

.btn-secondary {
  background-color: #6c757d;
}

.btn-secondary:hover {
  background-color: #5a6268;
}

/* Toggle buttons */
.button-group {
  display: flex;
  flex-direction: row !important;
  gap: 20px;
  margin-top: 15px;
  justify-content: center;
  width: 100%;
}

.img-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px;
  transition: transform 0.2s;
  width: 100px;
}

.img-btn:hover {
  transform: scale(1.05);
}

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

.img-btn:disabled:hover {
  transform: none;
}

.img-btn.active .power-on {
  background-color: #c8e6c9;
  box-shadow: 0 0 8px var(--success-color);
}

.img-btn.active .power-off {
  background-color: #ffcdd2;
  box-shadow: 0 0 8px var(--danger-color);
}

.img-btn span {
  margin-top: 8px;
  font-weight: bold;
}

.btn-img {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.power-on {
  background-color: #e8f5e9;
  border: 2px solid var(--success-color);
}

.power-on:before {
  content: '';
  position: absolute;
  width: 20px;
  height: 20px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%2300cc00'%3E%3Cpath d='M13 3h-2v10h2V3zm4.83 2.17l-1.42 1.42C17.99 7.86 19 9.81 19 12c0 3.87-3.13 7-7 7s-7-3.13-7-7c0-2.19 1.01-4.14 2.58-5.42L6.17 5.17C4.23 6.82 3 9.26 3 12c0 4.97 4.03 9 9 9s9-4.03 9-9c0-2.74-1.23-5.18-3.17-6.83z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
}

.power-off {
  background-color: #ffebee;
  border: 2px solid var(--danger-color);
}

.power-off:before {
  content: '';
  position: absolute;
  width: 20px;
  height: 20px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23cc0000'%3E%3Cpath d='M13 3h-2v10h2V3zm4.83 2.17l-1.42 1.42C17.99 7.86 19 9.81 19 12c0 3.87-3.13 7-7 7s-7-3.13-7-7c0-2.19 1.01-4.14 2.58-5.42L6.17 5.17C4.23 6.82 3 9.26 3 12c0 4.97 4.03 9 9 9s9-4.03 9-9c0-2.74-1.23-5.18-3.17-6.83z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
}

/* LED indicators */
.led-container {
  display: flex;
  align-items: center;
  margin-bottom: 20px;
}

.led {
  display: inline-block;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  margin-right: 15px;
  background-color: #333;
  box-shadow: 0 0 5px rgba(0, 0, 0, 0.3);
  position: relative;
}

.led:before {
  content: '';
  position: absolute;
  top: 5px;
  left: 8px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.4);
}

.led.on {
  background-color: var(--success-color);
  box-shadow:
    0 0 10px var(--success-color),
    0 0 20px var(--success-color),
    0 0 30px var(--success-color);
}

.led.off {
  background-color: #666;
}

/* Fault panel */
.fault-panel {
  background-color: #f8d7da;
  border: 1px solid #f5c6cb;
  color: #721c24;
}

.fault-panel h3 {
  color: #721c24;
  margin-bottom: 10px;
}

.fault-panel .btn {
  margin-top: 10px;
}

/* Schedule/source info */
.schedule-info {
  background-color: #d1ecf1;
  border: 1px solid #bee5eb;
  color: #0c5460;
  padding: 10px 15px;
  border-radius: 4px;
  margin-top: 15px;
  font-size: 0.95rem;
}

/* Current monitor */
.current-panel {
  margin-top: 15px;
  padding: 12px 15px;
  background-color: #f8f9fa;
  border-radius: 4px;
  border: 1px solid var(--border-color);
}

.current-panel h3 {
  font-size: 1rem;
  margin-bottom: 8px;
}

.current-reading {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.current-reading .value {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--primary-color);
}

.current-reading .status {
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 0.85rem;
  font-weight: bold;
}

.current-reading .status.active {
  background-color: #d4edda;
  color: #155724;
  border: 1px solid #c3e6cb;
}

.current-reading .status.inactive {
  background-color: #f8d7da;
  color: #721c24;
  border: 1px solid #f5c6cb;
}

/* Controls section spacing */
.controls-section {
  margin-bottom: 30px;
  padding-bottom: 20px;
  border-bottom: 1px solid #eee;
}

.controls-section:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

/* Form */
.form-group {
  margin-bottom: 15px;
}

label {
  display: block;
  margin-bottom: 5px;
  font-weight: bold;
}

input[type='text'],
input[type='password'],
input[type='number'] {
  width: 100%;
  padding: 8px;
  border-radius: 4px;
  border: 1px solid var(--border-color);
  font-size: 1rem;
}

.help-text {
  display: block;
  font-size: 0.85rem;
  margin-top: 4px;
  color: #666;
}

/* ========================================
   MQTT Status Banners
   ======================================== */
.status-banner {
  border-left: 4px solid var(--border-color);
  padding: 15px;
}

.status-banner.connected {
  background-color: #d4edda;
  border-left-color: var(--success-color);
}

.status-banner.disconnected {
  background-color: #f8d7da;
  border-left-color: var(--danger-color);
}

.status-banner.connecting {
  background-color: #fff3cd;
  border-left-color: #ffc107;
}

.status-banner.device-offline {
  background-color: #fff3cd;
  border-left-color: #ff9800;
}

.status-content {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.status-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 20px;
  font-weight: bold;
}

.connected .status-icon {
  background-color: var(--success-color);
  box-shadow: 0 0 10px var(--success-color);
}

.disconnected .status-icon {
  background-color: var(--danger-color);
}

.connecting .status-icon {
  background-color: #ffc107;
  animation: pulse 1.5s ease-in-out infinite;
}

.device-offline .status-icon {
  background-color: #ff9800;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.status-text {
  flex: 1;
  min-width: 150px;
}

.status-text strong {
  display: block;
  font-size: 1rem;
}

.status-text span {
  font-size: 0.85rem;
  color: #666;
}

.status-actions {
  display: flex;
  gap: 8px;
}

/* ========================================
   Settings Modal
   ======================================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal-content {
  background: white;
  border-radius: 8px;
  max-width: 480px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 20px;
  border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
  margin: 0;
  font-size: 1.3rem;
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.8rem;
  cursor: pointer;
  color: #999;
  line-height: 1;
  padding: 0;
}

.modal-close:hover {
  color: #333;
}

.modal-body {
  padding: 20px;
}

.modal-footer {
  padding: 15px 20px;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

/* System info */
.info-grid {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 8px 15px;
  font-size: 0.95rem;
}

.info-grid .info-label {
  font-weight: bold;
  color: #555;
}

/* Responsive */
@media (max-width: 600px) {
  body {
    padding: 10px;
  }

  .status-content {
    flex-direction: column;
    align-items: flex-start;
  }

  .status-actions {
    width: 100%;
  }

  .status-actions .btn-small {
    flex: 1;
  }

  .button-group {
    flex-direction: column;
    align-items: center;
  }

  .modal-content {
    width: 95%;
  }
}