:root {
  color-scheme: light;
  font-family: Arial, Helvetica, sans-serif;
  color: #18202a;
  background: #f7f9fb;
}

body {
  margin: 0;
  min-height: 100vh;
}

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 18px 28px;
  border-bottom: 1px solid #e5e7eb;
  background: #ffffff;
}

.brand,
.nav-link,
.logout-button {
  align-items: center;
  color: #18202a;
  display: inline-flex;
  font-weight: 700;
  min-height: 44px;
  text-decoration: none;
}

.site-nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
}

.logout-form {
  margin: 0;
}

.logout-button {
  border: 0;
  background: transparent;
  cursor: pointer;
  font: inherit;
  padding: 0;
}

main {
  width: min(860px, calc(100% - 32px));
  margin: 72px auto;
}

.centered {
  text-align: center;
}

h1 {
  margin: 0 0 12px;
  font-size: 2.5rem;
}

p {
  color: #4b5563;
  font-size: 1.125rem;
}

.page-intro {
  margin-bottom: 28px;
}

.auth-form,
.profile-form,
.goal-form,
.food-form,
.weight-form,
.activity-form,
.steps-form {
  display: grid;
  gap: 16px;
  max-width: 640px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

label {
  display: grid;
  gap: 6px;
  font-weight: 700;
}

input,
select {
  border: 1px solid #cbd5e1;
  border-radius: 6px;
  font: inherit;
  min-height: 44px;
  padding: 10px 12px;
  width: 100%;
  box-sizing: border-box;
}

button,
.button {
  border: 0;
  border-radius: 6px;
  background: #18202a;
  color: #ffffff;
  cursor: pointer;
  font: inherit;
  font-weight: 700;
  min-height: 44px;
  padding: 10px 14px;
}

.flash-list {
  display: grid;
  gap: 8px;
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
}

.flash {
  border-radius: 6px;
  padding: 10px 12px;
}

.flash-error {
  background: #fee2e2;
  color: #991b1b;
}

.flash-success {
  background: #dcfce7;
  color: #166534;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin: 24px 0;
}

.compact-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 16px 0;
}

.metric {
  border: 1px solid #e5e7eb;
  border-radius: 6px;
  background: #ffffff;
  padding: 16px;
}

.metric span {
  color: #64748b;
  display: block;
  font-size: 0.9rem;
  margin-bottom: 6px;
}

.metric strong {
  font-size: 1.35rem;
}

.notice {
  border-radius: 6px;
  margin: 20px 0;
  padding: 12px 14px;
}

.notice-warning {
  background: #fef3c7;
  color: #92400e;
}

.notice-info {
  background: #dbeafe;
  color: #1e40af;
}

.date-nav,
.action-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 20px 0;
}

.action-row form {
  margin: 0;
}

.meal-section {
  margin-top: 28px;
}

.panel-section {
  margin-top: 32px;
}

.meal-section h2 {
  border-bottom: 1px solid #e5e7eb;
  padding-bottom: 8px;
}

.food-list,
.entry-list {
  display: grid;
  gap: 10px;
}

.food-entry,
.data-entry {
  align-items: center;
  background: #ffffff;
  border: 1px solid #e5e7eb;
  border-radius: 6px;
  display: grid;
  gap: 12px;
  grid-template-columns: 2fr 1fr 1fr auto;
  padding: 14px;
}

.food-entry span,
.data-entry span {
  color: #64748b;
  display: block;
  margin-top: 4px;
}

.entry-actions {
  display: flex;
  gap: 10px;
}

.dashboard-header {
  margin-bottom: 24px;
}

.dashboard-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 24px;
}

.dashboard-card,
.quick-actions {
  background: #ffffff;
  border: 1px solid #e5e7eb;
  border-radius: 6px;
  padding: 18px;
}

.dashboard-card-primary {
  margin-bottom: 18px;
}

.card-heading {
  align-items: baseline;
  display: flex;
  gap: 12px;
  justify-content: space-between;
}

.card-heading h2,
.quick-actions h2 {
  font-size: 1.35rem;
  margin: 0;
}

.card-heading span {
  color: #64748b;
  font-weight: 700;
}

.progress-track {
  background: #e5e7eb;
  border-radius: 999px;
  height: 14px;
  overflow: hidden;
  width: 100%;
}

.progress-fill {
  background: #18202a;
  height: 100%;
  min-width: 0;
}

@media (max-width: 700px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  main {
    margin: 40px auto;
  }

  h1 {
    font-size: 2rem;
  }

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

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

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

  .card-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .food-entry,
  .data-entry {
    align-items: start;
    grid-template-columns: 1fr;
  }
}