/* PicoTherm Home — Dark theme, mobile-first */

:root {
  --bg-primary: #1a1a2e;
  --bg-secondary: #16213e;
  --bg-card: #0f3460;
  --bg-input: #1a2744;
  --text-primary: #ffffff;
  --text-secondary: #a0a0b0;
  --accent-cool: #4fc3f7;
  --accent-heat: #ff8a65;
  --accent-off: #666680;
  --accent-fan: #66bb6a;
  --accent-danger: #ef5350;
  --accent-success: #66bb6a;
  --accent-auto: #ba68c8;
  --nav-height: 64px;
  --header-height: 56px;
  --radius: 12px;
  --radius-sm: 8px;
  --transition: 0.2s ease;
}

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

html {
  font-size: 16px;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

/* ---- Header ---- */
#app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  height: var(--header-height);
  background: var(--bg-secondary);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.logo {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.logo-accent {
  color: var(--accent-cool);
  font-weight: 400;
}

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

.status-dot.online { background: var(--accent-success); box-shadow: 0 0 6px var(--accent-success); }
.status-dot.offline { background: var(--accent-danger); }

/* ---- Main Content ---- */
#app-content {
  flex: 1;
  padding: 16px;
  padding-bottom: calc(var(--nav-height) + 24px);
  max-width: 800px;
  margin: 0 auto;
  width: 100%;
}

/* ---- Bottom Nav ---- */
#app-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-around;
  height: var(--nav-height);
  background: var(--bg-secondary);
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-bottom: env(safe-area-inset-bottom, 0px);
}

.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 6px 8px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.65rem;
  font-weight: 500;
  transition: color var(--transition);
  cursor: pointer;
  -webkit-user-select: none;
  user-select: none;
}

.nav-item svg {
  width: 24px;
  height: 24px;
  fill: currentColor;
}

.nav-item.active {
  color: var(--accent-cool);
}

/* ---- Cards ---- */
.card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 12px;
  transition: transform var(--transition), box-shadow var(--transition);
}

.card:active {
  transform: scale(0.98);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 12px;
}

/* ---- Device Card ---- */
.device-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  cursor: pointer;
  transition: transform var(--transition);
}

.device-card:active {
  transform: scale(0.97);
}

.device-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.device-card-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  background: rgba(255,255,255,0.08);
}

.device-card-status {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.device-card-status.online {
  background: var(--accent-success);
  box-shadow: 0 0 6px var(--accent-success);
}

.device-card-status.offline {
  background: var(--accent-danger);
}

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

.device-card-metric {
  font-size: 1.6rem;
  font-weight: 700;
  line-height: 1;
}

.device-card-sub {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

/* ---- Section Headers ---- */
.section-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.section-subtitle {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

/* ---- Thermostat Controls ---- */
.ac-controls {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.ac-selector {
  width: 100%;
}

.ac-selector select {
  width: 100%;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255,255,255,0.12);
  background: var(--bg-input);
  color: var(--text-primary);
  font-size: 0.95rem;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23a0a0b0' fill='none' stroke-width='2'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
}

.dial-container {
  position: relative;
  width: 260px;
  height: 260px;
}

.ac-temp-buttons {
  display: flex;
  align-items: center;
  gap: 24px;
}

.temp-btn {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: 2px solid rgba(255,255,255,0.15);
  background: var(--bg-card);
  color: var(--text-primary);
  font-size: 1.4rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition);
  -webkit-user-select: none;
  user-select: none;
}

.temp-btn:active {
  background: rgba(255,255,255,0.1);
  border-color: var(--accent-cool);
}

.temp-display {
  font-size: 1rem;
  color: var(--text-secondary);
  text-align: center;
  min-width: 80px;
}

.temp-display .set-val {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

.mode-buttons {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
}

.mode-btn {
  padding: 8px 16px;
  border-radius: 20px;
  border: 1px solid rgba(255,255,255,0.12);
  background: var(--bg-input);
  color: var(--text-secondary);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  cursor: pointer;
  transition: all var(--transition);
  letter-spacing: 0.03em;
}

.mode-btn:active { transform: scale(0.95); }
.mode-btn.active-cool { background: var(--accent-cool); color: #000; border-color: var(--accent-cool); }
.mode-btn.active-heat { background: var(--accent-heat); color: #000; border-color: var(--accent-heat); }
.mode-btn.active-auto { background: var(--accent-auto); color: #000; border-color: var(--accent-auto); }
.mode-btn.active-fan { background: var(--accent-fan); color: #000; border-color: var(--accent-fan); }
.mode-btn.active-off { background: var(--accent-off); color: #fff; border-color: var(--accent-off); }

.ac-status-bar {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 10px;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.04);
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.ac-status-item {
  display: flex;
  align-items: center;
  gap: 4px;
}

.ac-status-item .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.ac-status-item .dot.cooling { background: var(--accent-cool); }
.ac-status-item .dot.heating { background: var(--accent-heat); }
.ac-status-item .dot.fan { background: var(--accent-fan); }
.ac-status-item .dot.idle { background: var(--accent-off); }

/* ---- History ---- */
.history-controls {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.range-btn {
  padding: 6px 14px;
  border-radius: 16px;
  border: 1px solid rgba(255,255,255,0.12);
  background: var(--bg-input);
  color: var(--text-secondary);
  font-size: 0.8rem;
  cursor: pointer;
  transition: all var(--transition);
}

.range-btn.active {
  background: var(--accent-cool);
  color: #000;
  border-color: var(--accent-cool);
}

.chart-container {
  position: relative;
  width: 100%;
  height: 280px;
  margin-bottom: 16px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.stat-card {
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  padding: 12px;
  text-align: center;
}

.stat-value {
  font-size: 1.4rem;
  font-weight: 700;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-top: 2px;
}

/* ---- Forms ---- */
.form-group {
  margin-bottom: 14px;
}

.form-group label {
  display: block;
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 4px;
  font-weight: 500;
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255,255,255,0.12);
  background: var(--bg-input);
  color: var(--text-primary);
  font-size: 0.95rem;
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent-cool);
}

.btn {
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  border: none;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.btn:active { transform: scale(0.96); }

.btn-primary {
  background: var(--accent-cool);
  color: #000;
}

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

.btn-secondary {
  background: rgba(255,255,255,0.08);
  color: var(--text-primary);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 0.8rem;
}

/* ---- Credential Display ---- */
.cred-box {
  background: var(--bg-primary);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-sm);
  padding: 12px;
  margin-bottom: 12px;
}

.cred-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.cred-row:last-child { margin-bottom: 0; }

.cred-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.cred-value {
  font-family: 'SF Mono', SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.8rem;
  word-break: break-all;
  flex: 1;
  margin: 0 8px;
}

.copy-btn {
  padding: 4px 10px;
  border-radius: 6px;
  border: 1px solid rgba(255,255,255,0.12);
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.7rem;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.copy-btn:active {
  background: var(--accent-success);
  color: #000;
}

/* ---- Device List ---- */
.device-list-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
}

.device-list-info {
  display: flex;
  align-items: center;
  gap: 10px;
}

.device-list-info .device-card-status {
  flex-shrink: 0;
}

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

.device-list-meta {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

/* ---- Cameras Placeholder ---- */
.coming-soon {
  text-align: center;
  padding: 48px 16px;
}

.coming-soon-icon {
  font-size: 3rem;
  margin-bottom: 16px;
  opacity: 0.5;
}

.coming-soon h2 {
  font-size: 1.2rem;
  margin-bottom: 8px;
}

.coming-soon p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  max-width: 400px;
  margin: 0 auto;
  line-height: 1.5;
}

.architecture-list {
  text-align: left;
  max-width: 360px;
  margin: 20px auto 0;
  list-style: none;
}

.architecture-list li {
  padding: 8px 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.architecture-list li::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-cool);
  margin-right: 10px;
  vertical-align: middle;
}

/* ---- Settings ---- */
.settings-section {
  margin-bottom: 24px;
}

.settings-section h3 {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 10px;
  padding-bottom: 6px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.settings-info {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.settings-info dt {
  color: var(--text-primary);
  font-weight: 600;
  margin-top: 8px;
}

.settings-info dd {
  margin-left: 0;
}

/* ---- Toast ---- */
.toast {
  position: fixed;
  bottom: calc(var(--nav-height) + 16px);
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--bg-card);
  color: var(--text-primary);
  padding: 10px 20px;
  border-radius: 20px;
  font-size: 0.85rem;
  z-index: 200;
  opacity: 0;
  transition: transform 0.3s ease, opacity 0.3s ease;
  box-shadow: 0 4px 20px rgba(0,0,0,0.4);
  pointer-events: none;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

.toast.success { border-left: 3px solid var(--accent-success); }
.toast.error { border-left: 3px solid var(--accent-danger); }

/* ---- Loading Spinner ---- */
.spinner {
  width: 32px;
  height: 32px;
  border: 3px solid rgba(255,255,255,0.1);
  border-top-color: var(--accent-cool);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 40px auto;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ---- Empty State ---- */
.empty-state {
  text-align: center;
  padding: 48px 16px;
  color: var(--text-secondary);
}

.empty-state p {
  font-size: 0.9rem;
  margin-top: 8px;
}

/* ---- Modal ---- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 150;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.modal {
  background: var(--bg-secondary);
  border-radius: var(--radius);
  padding: 24px;
  width: 100%;
  max-width: 400px;
  max-height: 90vh;
  overflow-y: auto;
}

.modal h3 {
  margin-bottom: 16px;
  font-size: 1.1rem;
}

.modal-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  margin-top: 16px;
}

/* ---- Responsive ---- */
@media (min-width: 600px) {
  #app-content {
    padding: 24px;
    padding-bottom: calc(var(--nav-height) + 32px);
  }

  .card-grid {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  }

  .dial-container {
    width: 300px;
    height: 300px;
  }

  .chart-container {
    height: 360px;
  }

  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (min-width: 800px) {
  .nav-item {
    font-size: 0.75rem;
  }
}