:root {
  /* Color Palette */
  --color-bg-light: #EAF3F8;
  --color-white: #FFFFFF;
  --color-blue: #007AFF;
  --color-blue-light: #368BFF;
  --color-green: #27C498;
  --color-yellow: #FFCE52;
  --color-red: #FF6B6B;
  --color-text-main: #2C3E50;
  --color-text-secondary: #6B7C93;
  --color-text-label: #A0AEC0;
  --color-border-light: #E2E8F0;
  --color-insight-gradient-start: #E3F1FF;
  --color-insight-gradient-end: #B6E1FF;
  --color-blue-chart: #007AFF;
  --color-green-chart: #27C498;
  --color-yellow-chart: #FFCE52;
  --color-red-chart: #FF6B6B;
  --color-hr-rest-line: #4A90E2;
}

/* Typography */
body {
  font-family: 'Inter', sans-serif;
  font-size: 16px;
  color: var(--color-text-main);
  background-color: var(--color-bg-light);
  margin: 0;
  padding: 0;
}

h1 {
  font-size: 2rem;
  font-weight: 700;
}

h2 {
  font-size: 1.5rem;
  font-weight: 600;
}

h3 {
  font-size: 1.125rem;
  font-weight: 600;
}

p, span {
  font-size: 1rem;
  line-height: 1.5;
}

.label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-label);
  text-transform: uppercase;
}

.status {
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 12px;
  padding: 2px 8px;
  text-transform: uppercase;
}

/* Layout */
.container {
  padding: 2rem;
  max-width: 1440px;
  margin: 0 auto;
}

.section {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.card {
  background-color: var(--color-white);
  border-radius: 16px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

/* Buttons */
.button-primary {
  background-color: var(--color-blue);
  color: var(--color-white);
  border: none;
  border-radius: 12px;
  padding: 0.6rem 1.2rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.2s ease;
}

.button-primary:hover {
  background-color: var(--color-blue-light);
}

.button-secondary {
  background-color: var(--color-white);
  border: 1px solid var(--color-blue);
  color: var(--color-blue);
  border-radius: 12px;
  padding: 0.6rem 1.2rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.2s ease;
}

.button-secondary:hover {
  background-color: #F0F6FF;
}

/* Status Tags */
.status-good {
  background-color: var(--color-green);
  color: white;
}

.status-improve {
  background-color: var(--color-yellow);
  color: white;
}

.status-attention {
  background-color: var(--color-red);
  color: white;
}

/* AI-powered Insights Section */
.insights {
  background: linear-gradient(135deg, var(--color-insight-gradient-start), var(--color-insight-gradient-end));
  border-radius: 24px;
  padding: 2rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.insight-card {
  background-color: var(--color-white);
  border-radius: 16px;
  padding: 1rem 1.25rem;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
}

.insight-card h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

/* Charts (structure only) */
.chart-bar {
  border-radius: 8px;
  width: 100%;
  height: 300px;
}

.bar-aerobic {
  background-color: var(--color-blue-chart);
}

.bar-strength {
  background-color: var(--color-green-chart);
}

.bar-other {
  background-color: var(--color-yellow-chart);
}

.line-hrhigh {
  stroke: var(--color-red-chart);
  stroke-width: 2;
}

.line-hrrest {
  stroke: var(--color-hr-rest-line);
  stroke-width: 2;
}

/* Extras */
.avatar {
  border-radius: 50%;
  width: 48px;
  height: 48px;
}

.search-bar {
  border-radius: 12px;
  padding: 0.5rem 1rem;
  border: 1px solid var(--color-border-light);
  background-color: #F7FAFC;
  font-size: 0.95rem;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .container {
    padding: 1rem;
  }

  h1 {
    font-size: 1.5rem;
  }

  .section {
    grid-template-columns: 1fr;
  }
}

/* Recovery Card Specific Styles */
.recovery-card-link {
  text-decoration: none;
  color: inherit;
}

.recovery-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.recovery-icon {
  color: var(--color-blue);
}

.metric-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.25rem 0;
  font-size: 0.875rem;
}

.metric-row .label {
  color: var(--color-text-label);
}

.recovery-status {
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--color-border-light);
}

/* Card Link */
.card-link {
  text-decoration: none;
  color: inherit;
  display: block;
}

/* Card Header */
.card-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.card-icon {
  font-size: 1.25rem;
}

/* Card Content */
.card-content {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* Metric Section */
.metric-section {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.metric-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--color-border-light);
}

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

/* Chart Section */
.chart-section {
  margin-top: 1rem;
}

/* Metric Bubbles */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.metric-bubble {
  background-color: var(--color-white);
  border-radius: 12px;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
  transition: transform 0.2s ease;
}

.metric-bubble:hover {
  transform: translateY(-2px);
}

.metric-label {
  font-size: 0.75rem;
  color: var(--color-text-label);
  text-transform: uppercase;
  margin-bottom: 0.25rem;
}

.metric-value {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text-main);
}

.metric-duration {
  border: 2px solid var(--color-blue);
}

.metric-strain {
  border: 2px solid var(--color-green);
}

.metric-avg-hr {
  border: 2px solid var(--color-yellow);
}

.metric-max-hr {
  border: 2px solid var(--color-red);
}

.metric-calories {
  border: 2px solid var(--color-blue-light);
}

.workout-details {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  width: 100%;
}

.workout-stats {
  width: 100%;
}

.heart-rate-zones {
  width: 100%;
}

.chart-container {
  width: 100%;
  height: 300px;
  margin-top: 1rem;
}

/* Card Hover Effects */
.card-hover-effect {
  transition: all 0.3s ease;
}

.card-hover-effect:hover {
  background-color: var(--color-bg-light);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}