:root {
  --bg-primary: #1a1a2e;
  --bg-secondary: #16213e;
  --bg-card: #1f2b47;
  --text-primary: #ffffff;
  --text-secondary: #a0a0b0;
  --accent: #4facfe;
  --accent-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
  --success: #22c55e;
  --warning: #eab308;
  --danger: #ef4444;
  --border-radius: 12px;
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html, body {
  height: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
}

.screen {
  height: 100%;
  width: 100%;
  position: absolute;
  top: 0;
  left: 0;
}

.hidden {
  display: none !important;
}

/* PIN Auth Screen */
.auth-container {
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-lg);
}

.auth-container h1 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.subtitle {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xl);
}

.pin-display {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.pin-dot {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 2px solid var(--text-secondary);
  transition: all 0.2s ease;
}

.pin-dot.filled {
  background: var(--accent);
  border-color: var(--accent);
}

.pin-error {
  height: 24px;
  color: var(--danger);
  font-size: 0.875rem;
  margin-bottom: var(--spacing-md);
}

.pin-pad {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
  max-width: 280px;
  width: 100%;
}

.pin-btn {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  border: none;
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 1.5rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto;
}

.pin-btn:active:not(:disabled) {
  background: var(--accent);
  transform: scale(0.95);
}

.pin-btn:disabled {
  visibility: hidden;
}

.pin-delete {
  color: var(--text-secondary);
}

/* App Screen */
#app-screen {
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
}

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md);
  background: var(--bg-secondary);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  flex-shrink: 0;
}

.header-left h1 {
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.2;
}

.header-subtitle {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.header-right {
  display: flex;
  gap: var(--spacing-sm);
  align-items: center;
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  background: rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  font-size: 0.75rem;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-secondary);
}

.status-dot.green { background: var(--success); }
.status-dot.yellow { background: var(--warning); }
.status-dot.red { background: var(--danger); }

.icon-btn {
  width: 40px;
  height: 40px;
  border: none;
  background: transparent;
  color: var(--text-primary);
  cursor: pointer;
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s ease;
}

.icon-btn:active {
  background: rgba(255, 255, 255, 0.1);
}

.icon-btn.refreshing svg {
  animation: spin 1s linear infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* Last Updated Bar */
.last-updated-bar {
  display: flex;
  justify-content: space-between;
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--bg-secondary);
  font-size: 0.75rem;
  color: var(--text-secondary);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.provider-time {
  color: var(--accent);
}

/* Dashboard Content */
.dashboard-content {
  flex: 1;
  overflow-y: auto;
  padding: var(--spacing-md);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

/* Alerts Section */
.alerts-section {
  background: var(--bg-card);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
}

.alerts-section.has-alerts {
  border: 1px solid var(--danger);
  background: rgba(239, 68, 68, 0.1);
}

.alerts-section.has-warnings {
  border: 1px solid var(--warning);
  background: rgba(234, 179, 8, 0.1);
}

.section-title {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--text-secondary);
}

.alerts-section.has-alerts .section-title,
.alerts-section.has-warnings .section-title {
  color: var(--text-primary);
}

.alerts-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.alert-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm);
  border-radius: 8px;
  font-size: 0.875rem;
}

.alert-item.red {
  background: rgba(239, 68, 68, 0.2);
  color: var(--danger);
}

.alert-item.yellow {
  background: rgba(234, 179, 8, 0.2);
  color: var(--warning);
}

.alert-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
}

.no-alerts {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

/* Metric Card */
.metric-card {
  background: var(--bg-card);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
}

.card-title {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  color: var(--accent);
}

/* Vitals Card */
.vitals-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
}

.vital-item {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 8px;
  padding: var(--spacing-sm);
}

.vital-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-xs);
}

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

.vital-status {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--text-secondary);
}

.vital-status.green { background: var(--success); }
.vital-status.yellow { background: var(--warning); }
.vital-status.red { background: var(--danger); }

.vital-value {
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.2;
}

.vital-unit {
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--text-secondary);
}

.vital-range {
  font-size: 0.625rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xs);
}

.sparkline {
  width: 100%;
  height: 30px;
}

/* Glucose Card */
.glucose-content {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.glucose-main {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.glucose-current {
  display: flex;
  align-items: baseline;
  gap: var(--spacing-xs);
}

.glucose-value {
  font-size: 2.5rem;
  font-weight: 700;
}

.glucose-unit {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.glucose-status {
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
}

.glucose-status.in-range {
  background: rgba(34, 197, 94, 0.2);
  color: var(--success);
}

.glucose-status.high {
  background: rgba(234, 179, 8, 0.2);
  color: var(--warning);
}

.glucose-status.low {
  background: rgba(239, 68, 68, 0.2);
  color: var(--danger);
}

.glucose-stats {
  display: flex;
  justify-content: space-around;
  padding: var(--spacing-sm) 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.glucose-stat, .pef-stat, .ostomy-stat, .water-stat {
  text-align: center;
}

.stat-value {
  display: block;
  font-size: 1.25rem;
  font-weight: 600;
}

.stat-label {
  font-size: 0.625rem;
  color: var(--text-secondary);
  text-transform: uppercase;
}

.agp-chart {
  height: 60px;
}

#agp-canvas {
  width: 100%;
  height: 100%;
}

/* Pulmonary Card */
.pulmonary-content {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.pef-main {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.pef-current {
  display: flex;
  align-items: baseline;
  gap: var(--spacing-xs);
}

.pef-value {
  font-size: 2.5rem;
  font-weight: 700;
}

.pef-unit {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.zone-indicator {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

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

.zone-badge {
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
}

.zone-badge.green {
  background: rgba(34, 197, 94, 0.2);
  color: var(--success);
}

.zone-badge.yellow {
  background: rgba(234, 179, 8, 0.2);
  color: var(--warning);
}

.zone-badge.red {
  background: rgba(239, 68, 68, 0.2);
  color: var(--danger);
}

.pef-stats {
  display: flex;
  justify-content: space-around;
  padding: var(--spacing-sm) 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.zone-distribution {
  margin-top: var(--spacing-sm);
}

.zone-bar {
  display: flex;
  height: 12px;
  border-radius: 6px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.1);
}

.zone-segment {
  height: 100%;
  transition: width 0.5s ease;
}

.zone-segment.green { background: var(--success); }
.zone-segment.yellow { background: var(--warning); }
.zone-segment.red { background: var(--danger); }

.zone-labels {
  display: flex;
  justify-content: space-between;
  margin-top: var(--spacing-xs);
  font-size: 0.625rem;
  color: var(--text-secondary);
}

/* Ostomy Card */
.ostomy-content {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.ostomy-main {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.ostomy-current {
  display: flex;
  align-items: baseline;
  gap: var(--spacing-xs);
}

.ostomy-value {
  font-size: 2.5rem;
  font-weight: 700;
}

.ostomy-unit {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.ostomy-status {
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
}

.ostomy-status.normal {
  background: rgba(34, 197, 94, 0.2);
  color: var(--success);
}

.ostomy-status.high {
  background: rgba(234, 179, 8, 0.2);
  color: var(--warning);
}

.ostomy-status.critical {
  background: rgba(239, 68, 68, 0.2);
  color: var(--danger);
}

.ostomy-stats {
  display: flex;
  justify-content: space-around;
  padding: var(--spacing-sm) 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.output-chart {
  width: 100%;
  height: 60px;
}

/* Labs Card */
.labs-content {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.lab-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm);
  background: rgba(255, 255, 255, 0.05);
  border-radius: 8px;
}

.lab-name {
  font-size: 0.875rem;
  font-weight: 500;
}

.lab-result {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.lab-value {
  font-size: 1rem;
  font-weight: 600;
}

.lab-unit {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.lab-trend {
  font-size: 0.875rem;
}

.lab-trend.up { color: var(--danger); }
.lab-trend.down { color: var(--success); }
.lab-trend.stable { color: var(--text-secondary); }

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

.lab-status.normal { background: var(--success); }
.lab-status.warning { background: var(--warning); }
.lab-status.critical { background: var(--danger); }

.no-data {
  color: var(--text-secondary);
  font-size: 0.875rem;
  text-align: center;
  padding: var(--spacing-md);
}

/* Water Quality Card */
.water-content {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.water-main {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.water-status-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(34, 197, 94, 0.2);
  color: var(--success);
}

.water-status-icon.warning {
  background: rgba(234, 179, 8, 0.2);
  color: var(--warning);
}

.water-status-icon.danger {
  background: rgba(239, 68, 68, 0.2);
  color: var(--danger);
}

.water-status-text {
  display: flex;
  flex-direction: column;
}

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

.water-value {
  font-size: 1.25rem;
  font-weight: 600;
  text-transform: capitalize;
}

.water-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.water-stat {
  text-align: center;
}

.water-stat .stat-label {
  display: block;
  margin-bottom: var(--spacing-xs);
}

.water-stat .stat-value {
  font-size: 0.875rem;
}

.water-stat .stat-value.good { color: var(--success); }
.water-stat .stat-value.warning { color: var(--warning); }
.water-stat .stat-value.danger { color: var(--danger); }

.water-test-date {
  font-size: 0.75rem;
  color: var(--text-secondary);
  text-align: center;
}

/* Sleep Card */
.sleep-content {
  display: flex;
  gap: var(--spacing-lg);
  align-items: center;
}

.sleep-main {
  display: flex;
  align-items: baseline;
  gap: var(--spacing-xs);
}

.sleep-value {
  font-size: 2.5rem;
  font-weight: 700;
}

.sleep-unit {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.sleep-stages {
  flex: 1;
  display: flex;
  justify-content: space-around;
  gap: var(--spacing-sm);
}

.sleep-stage {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
}

.stage-bar {
  width: 20px;
  height: 40px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.1);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}

.stage-bar-fill {
  width: 100%;
  border-radius: 4px;
  transition: height 0.5s ease;
}

.stage-bar.deep .stage-bar-fill { background: #6366f1; }
.stage-bar.core .stage-bar-fill { background: #8b5cf6; }
.stage-bar.rem .stage-bar-fill { background: #a855f7; }
.stage-bar.awake .stage-bar-fill { background: var(--warning); }

.stage-label {
  font-size: 0.625rem;
  color: var(--text-secondary);
}

.stage-value {
  font-size: 0.75rem;
  font-weight: 600;
}

/* Activity Card */
.activity-content {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.activity-ring-container {
  width: 100px;
  height: 100px;
  flex-shrink: 0;
}

.activity-rings {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.ring-bg {
  fill: none;
  stroke: rgba(255, 255, 255, 0.1);
  stroke-width: 6;
}

.ring-progress {
  fill: none;
  stroke-width: 6;
  stroke-linecap: round;
  transition: stroke-dashoffset 1s ease;
}

.ring-progress.move { stroke: #fa114f; }
.ring-progress.exercise { stroke: #92e82a; }
.ring-progress.stand { stroke: #1eeaef; }

.activity-stats {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.activity-stat {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.activity-stat::before {
  content: '';
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.activity-stat.move::before { background: #fa114f; }
.activity-stat.exercise::before { background: #92e82a; }
.activity-stat.stand::before { background: #1eeaef; }

.activity-stat .stat-value {
  font-size: 1.25rem;
  min-width: 50px;
}

.activity-stat .stat-label {
  font-size: 0.75rem;
}

/* Provider View Styling */
.provider-view #water-card {
  display: none;
}

.provider-view .provider-time {
  display: inline;
}

/* Responsive Adjustments */
@media (min-width: 480px) {
  .pin-pad {
    max-width: 320px;
  }

  .pin-btn {
    width: 80px;
    height: 80px;
  }

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

@media (min-width: 768px) {
  .dashboard-content {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
  }

  .alerts-section {
    grid-column: span 2;
  }

  .metric-card {
    min-height: 200px;
  }
}

/* Safe area insets for notched devices */
@supports (padding-top: env(safe-area-inset-top)) {
  .app-header {
    padding-top: calc(var(--spacing-md) + env(safe-area-inset-top));
  }

  .dashboard-content {
    padding-bottom: calc(var(--spacing-md) + env(safe-area-inset-bottom));
  }
}

/* Loading states */
.loading {
  opacity: 0.5;
  pointer-events: none;
}

.shimmer {
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0.05) 25%,
    rgba(255, 255, 255, 0.1) 50%,
    rgba(255, 255, 255, 0.05) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}