/* ==========================================================================
   SensorHub Common Stylesheet (Reset, Layout, Buttons, Badges, Toasts)
   ========================================================================== */

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

html, body {
  min-height: 100vh;
  font-family: var(--font-mono);
  background-color: var(--bg-canvas);
  color: var(--text-main);
  transition: background-color var(--transition-fast), color var(--transition-fast);
  line-height: 1.5;
  font-size: 14px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

pre, code {
  font-family: var(--font-mono);
}

svg {
  max-width: 100%;
  max-height: 100%;
  flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   App Container & Header (Global Layout)
   -------------------------------------------------------------------------- */
.app-container {
  position: relative;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 20px 64px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.app-header {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--hairline);
  flex-wrap: wrap;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-tag {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: 0.04em;
}

.brand-title {
  font-size: 1.05rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
  letter-spacing: -0.01em;
  text-transform: uppercase;
}

.brand-badge {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  background: var(--color-danger-bg);
  color: var(--color-danger);
  border: 1px solid var(--color-danger);
  text-transform: uppercase;
}

.brand-subtitle {
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.03em;
  text-transform: uppercase;
  margin-top: 2px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.connection-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  background: var(--bg-card);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
}

.status-bracket {
  color: var(--text-dim);
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--color-success);
  display: inline-block;
  flex-shrink: 0;
}

.status-dot-waiting {
  background-color: var(--color-warning) !important;
}

/* --------------------------------------------------------------------------
   Buttons (4px Radius, Monospace, Line Height 1.8 - 2.0)
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  line-height: 1.8;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
  user-select: none;
  text-transform: uppercase;
}

.btn-primary {
  background: var(--btn-primary-bg);
  color: var(--btn-primary-text);
  border-color: var(--btn-primary-bg);
}
.btn-primary:hover:not(:disabled) {
  background: var(--btn-primary-hover);
  border-color: var(--btn-primary-hover);
}
.btn-primary:active:not(:disabled) {
  background: var(--btn-primary-active);
  border-color: var(--btn-primary-active);
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-main);
  border-color: var(--hairline);
}
.btn-secondary:hover:not(:disabled) {
  background: var(--bg-card-hover);
  border-color: var(--hairline-strong);
}
.btn-secondary:active:not(:disabled) {
  background: var(--bg-surface-inset);
}

.btn.active-state {
  background: var(--color-success-bg);
  color: var(--color-success);
  border-color: var(--color-success);
}

.btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

/* --------------------------------------------------------------------------
   Sensor & Feed Cards (Hairline bordered, 0px radius)
   -------------------------------------------------------------------------- */
.sensor-card {
  background: var(--bg-card);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  position: relative;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-subtle);
}

.card-title-group {
  display: flex;
  align-items: center;
  gap: 8px;
}

.section-marker {
  color: var(--color-accent);
  font-weight: 700;
}

.card-title {
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.card-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.card-footer {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-top: 10px;
  border-top: 1px solid var(--border-subtle);
  flex-wrap: wrap;
}

/* --------------------------------------------------------------------------
   Badges
   -------------------------------------------------------------------------- */
.badge {
  font-size: 0.68rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  flex-shrink: 0;
}

.badge-idle {
  background: var(--badge-idle-bg);
  color: var(--badge-idle-text);
  border: 1px solid var(--hairline);
}

.badge-active {
  background: var(--color-success-bg);
  color: var(--color-success);
  border: 1px solid var(--color-success);
}

.badge-success {
  background: var(--color-success-bg);
  color: var(--color-success);
  border: 1px solid var(--color-success);
}

.badge-denied {
  background: var(--color-danger-bg);
  color: var(--color-danger);
  border: 1px solid var(--color-danger);
}

/* --------------------------------------------------------------------------
   Toast Notifications
   -------------------------------------------------------------------------- */
.toast-container {
  position: fixed;
  bottom: 20px;
  right: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 99999;
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  min-width: 260px;
  max-width: 380px;
  background: var(--bg-card);
  border: 1px solid var(--hairline-strong);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-main);
  font-size: 0.76rem;
  font-weight: 500;
  transition: opacity 0.2s, transform 0.2s;
}

.toast-icon {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

.toast.toast-success {
  border-color: var(--color-success);
}
.toast.toast-error {
  border-color: var(--color-danger);
}
.toast.toast-hiding {
  opacity: 0;
  transform: translateY(6px);
}