:root {
  --app-bg: #f4f7f6;
  --app-surface: #ffffff;
  --app-surface-alt: #eef7f4;
  --app-border: #d7e2df;
  --app-text: #1d2930;
  --app-muted: #617078;
  --app-primary: #12736b;
  --app-primary-dark: #0b514c;
  --app-accent: #f2a93b;
  --app-danger: #c93636;
  --app-success: #2f8a53;
  --app-info: #276fa6;
  --app-radius: 8px;
  --app-shadow: 0 14px 34px rgba(29, 41, 48, 0.08);
}

html {
  min-height: 100%;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--app-text);
  background:
    linear-gradient(180deg, #ffffff 0, var(--app-bg) 360px),
    var(--app-bg);
  font-family: Arial, Helvetica, sans-serif;
}

a {
  color: var(--app-primary);
}

a:hover {
  color: var(--app-primary-dark);
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 2000;
  padding: 0.55rem 0.8rem;
  color: #fff;
  background: var(--app-primary-dark);
  border-radius: var(--app-radius);
}

.skip-link:focus {
  top: 1rem;
}

.app-container {
  max-width: 1180px;
}

.app-header {
  position: sticky;
  top: 0;
  z-index: 1020;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--app-border);
  box-shadow: 0 8px 24px rgba(29, 41, 48, 0.05);
  backdrop-filter: blur(8px);
}

.brand-lockup {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  min-width: 0;
  color: var(--app-text);
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.45rem;
  height: 2.45rem;
  color: #fff;
  background: var(--app-primary);
  border-radius: var(--app-radius);
  font-weight: 700;
  letter-spacing: 0;
}

.brand-name,
.brand-subtitle {
  display: block;
  line-height: 1.15;
}

.brand-name {
  font-size: 0.98rem;
  font-weight: 700;
}

.brand-subtitle {
  color: var(--app-muted);
  font-size: 0.76rem;
}

.app-nav {
  gap: 0.2rem;
}

.app-nav .nav-link {
  color: var(--app-muted);
  border-radius: var(--app-radius);
  font-weight: 600;
}

.app-nav .nav-link:hover,
.app-nav .nav-link:focus {
  color: var(--app-primary-dark);
  background: var(--app-surface-alt);
}

.app-user-nav {
  align-items: center;
  gap: 0.6rem;
}

.user-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  max-width: 26rem;
  padding: 0.35rem 0.55rem;
  overflow: hidden;
  color: var(--app-text);
  background: #f8fbfa;
  border: 1px solid var(--app-border);
  border-radius: var(--app-radius);
  font-size: 0.86rem;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.user-chip span {
  color: var(--app-primary);
  font-weight: 700;
}

.app-main {
  padding: 1.35rem 0 2.5rem;
}

.app-footer {
  padding: 1.25rem 0;
  color: var(--app-muted);
  border-top: 1px solid var(--app-border);
}

.page-kicker {
  margin-bottom: 0.45rem;
  color: var(--app-primary);
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
}

.page-title {
  margin-bottom: 0.35rem;
  font-size: clamp(1.55rem, 2.2vw, 2.15rem);
  font-weight: 800;
  letter-spacing: 0;
}

.page-description {
  max-width: 68rem;
  color: var(--app-muted);
}

.section-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.section-heading h1,
.section-heading h2 {
  margin: 0;
}

.app-surface {
  padding: 1.25rem;
  background: var(--app-surface);
  border: 1px solid var(--app-border);
  border-radius: var(--app-radius);
  box-shadow: var(--app-shadow);
}

.metric-grid,
.workflow-grid,
.result-grid,
.source-grid {
  display: grid;
  gap: 1rem;
}

.metric-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.workflow-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.result-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.source-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.metric-card,
.workflow-card,
.drug-card {
  min-width: 0;
  padding: 1rem;
  background: var(--app-surface);
  border: 1px solid var(--app-border);
  border-radius: var(--app-radius);
}

.metric-card strong {
  display: block;
  margin-top: 0.2rem;
  font-size: 1.65rem;
}

.metric-card span,
.workflow-card p,
.drug-meta,
.muted-copy {
  color: var(--app-muted);
}

.quick-search,
.filter-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(12rem, 18rem) auto;
  gap: 0.75rem;
  align-items: end;
}

.table-shell {
  width: 100%;
  min-width: 0;
  max-width: 100%;
  overflow-x: auto;
  background: var(--app-surface);
  border: 1px solid var(--app-border);
  border-radius: var(--app-radius);
}

.table-shell table {
  margin-bottom: 0;
}

.table-shell thead {
  color: var(--app-muted);
  background: #f7faf9;
}

.table-shell th {
  font-size: 0.78rem;
  text-transform: uppercase;
}

.drug-card {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.drug-card-header {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}

.drug-title {
  margin: 0;
  font-size: 1.02rem;
  font-weight: 800;
}

.drug-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 0.85rem;
  font-size: 0.88rem;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  width: fit-content;
  padding: 0.25rem 0.5rem;
  border-radius: var(--app-radius);
  font-size: 0.78rem;
  font-weight: 700;
}

.status-badge.is-success {
  color: #155b33;
  background: #e7f5ec;
}

.status-badge.is-danger {
  color: #8a2020;
  background: #ffeceb;
}

.status-badge.is-warning {
  color: #725000;
  background: #fff3d7;
}

.status-badge.is-info {
  color: #174f79;
  background: #eaf4fb;
}

.detail-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(16rem, 24rem);
  align-items: start;
  gap: 1rem;
}

.detail-list {
  display: grid;
  gap: 0.8rem;
}

.detail-row {
  display: grid;
  grid-template-columns: minmax(8rem, 13rem) minmax(0, 1fr);
  gap: 1rem;
  padding-bottom: 0.8rem;
  border-bottom: 1px solid var(--app-border);
}

.detail-row dt {
  color: var(--app-muted);
  font-weight: 700;
}

.detail-row dd {
  margin-bottom: 0;
}

.action-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.btn {
  border-radius: var(--app-radius);
  font-weight: 700;
}

.btn-primary {
  color: #fff;
  background-color: var(--app-primary);
  border-color: var(--app-primary);
}

.btn-primary:hover,
.btn-primary:focus {
  background-color: var(--app-primary-dark);
  border-color: var(--app-primary-dark);
}

.btn:focus,
.btn:active:focus,
.btn-link.nav-link:focus,
.form-control:focus,
.form-select:focus,
.form-check-input:focus {
  border-color: var(--app-primary);
  box-shadow: 0 0 0 0.2rem rgba(18, 115, 107, 0.2);
}

.form-control,
.form-select {
  border-color: var(--app-border);
  border-radius: var(--app-radius);
}

.empty-state {
  padding: 1.5rem;
  color: var(--app-muted);
  background: #f8fbfa;
  border: 1px dashed var(--app-border);
  border-radius: var(--app-radius);
}

.stack-list {
  display: grid;
  gap: 0.65rem;
}

.stack-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem;
  color: var(--app-text);
  text-decoration: none;
  background: #f8fbfa;
  border: 1px solid var(--app-border);
  border-radius: var(--app-radius);
}

.stack-item:hover,
.stack-item:focus {
  color: var(--app-primary-dark);
  border-color: var(--app-primary);
}

.stack-item span span {
  display: block;
  color: var(--app-muted);
  font-size: 0.86rem;
}

.recommendation-card {
  display: grid;
  gap: 0.7rem;
  padding: 0.85rem;
  background: #f8fbfa;
  border: 1px solid var(--app-border);
  border-radius: var(--app-radius);
}

.recommendation-topline {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 1rem;
}

.recommendation-topline a {
  color: var(--app-text);
  text-decoration: none;
}

.recommendation-topline a:hover,
.recommendation-topline a:focus {
  color: var(--app-primary-dark);
}

.recommendation-topline span,
.safety-profile span {
  display: block;
  color: var(--app-muted);
  font-size: 0.86rem;
}

.score-chip {
  min-width: 4.8rem;
  padding: 0.45rem 0.55rem;
  text-align: center;
  color: var(--app-primary-dark);
  background: #e8f5f2;
  border: 1px solid #c7e4de;
  border-radius: var(--app-radius);
}

.score-chip strong {
  display: block;
  font-size: 1.25rem;
  line-height: 1;
}

.score-chip span {
  font-size: 0.72rem;
  font-weight: 700;
}

.reason-list {
  display: grid;
  gap: 0.25rem;
  margin: 0;
  padding-left: 1.15rem;
  color: var(--app-muted);
  font-size: 0.88rem;
}

.alert-stack {
  display: grid;
  gap: 0.45rem;
}

.ai-explanation-control {
  display: grid;
  justify-items: start;
  gap: 0.65rem;
  padding-top: 0.25rem;
  border-top: 1px solid var(--app-border);
}

.ai-explanation-panel {
  display: grid;
  width: 100%;
  gap: 0.55rem;
  padding: 0.75rem;
  color: var(--app-ink);
  background: #f4f8f7;
  border: 1px solid #cfe0dc;
  border-radius: var(--app-radius);
}

.ai-explanation-panel[hidden] {
  display: none;
}

.ai-explanation-panel p,
.ai-explanation-panel ul {
  margin: 0;
}

.ai-explanation-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.ai-explanation-limit,
.ai-explanation-metadata,
.ai-safety-note {
  color: var(--app-muted);
  font-size: 0.82rem;
}

.ai-explanation-limit {
  padding-left: 0.65rem;
  border-left: 3px solid #d59a16;
}

.ai-safety-note {
  margin: 0.85rem 0 0;
}

.safety-alert,
.safety-profile {
  display: grid;
  gap: 0.15rem;
  padding: 0.65rem 0.75rem;
  border-radius: var(--app-radius);
}

.safety-profile {
  margin-top: 1rem;
  background: #eef7f4;
  border: 1px solid #c7e4de;
}

.safety-alert.is-danger {
  color: #8a2020;
  background: #ffeceb;
}

.safety-alert.is-warning {
  color: #725000;
  background: #fff3d7;
}

.safety-alert.is-info {
  color: #174f79;
  background: #eaf4fb;
}

.report-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(18rem, 0.7fr);
  gap: 1rem;
}

.source-card {
  display: grid;
  align-content: start;
  gap: 0.55rem;
  min-width: 0;
  padding: 0.85rem;
  background: #f8fbfa;
  border: 1px solid var(--app-border);
  border-radius: var(--app-radius);
}

.source-card span:not(.status-badge),
.source-card small {
  color: var(--app-muted);
}

.timeline-list {
  display: grid;
  gap: 0.7rem;
}

.timeline-list article {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 0.7rem;
  border-bottom: 1px solid var(--app-border);
}

.timeline-list article:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.timeline-list span,
.timeline-list small {
  display: block;
  color: var(--app-muted);
}

.review-list {
  display: grid;
  gap: 1rem;
}

.review-card,
.review-form {
  display: grid;
  gap: 1rem;
}

.review-summary,
.review-actions {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 1rem;
}

.review-form {
  grid-template-columns: minmax(10rem, 14rem) minmax(0, 1fr);
}

.review-actions {
  grid-column: 1 / -1;
  align-items: center;
}

.source-admin-card {
  box-shadow: none;
}

.auth-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(18rem, 26rem);
  gap: 1.25rem;
  align-items: start;
}

.auth-panel {
  width: 100%;
}

.account-list {
  display: grid;
  gap: 0.45rem;
  max-width: 34rem;
  margin-top: 1.25rem;
}

.account-list span {
  padding: 0.55rem 0.75rem;
  color: var(--app-muted);
  background: #f8fbfa;
  border: 1px solid var(--app-border);
  border-radius: var(--app-radius);
  font-family: Consolas, monospace;
  font-size: 0.88rem;
}

.access-panel {
  max-width: 46rem;
}

@media (max-width: 991.98px) {
  .metric-grid,
  .workflow-grid,
  .result-grid,
  .source-grid,
  .report-grid,
  .detail-grid,
  .auth-layout {
    grid-template-columns: 1fr;
  }

  .filter-panel,
  .quick-search {
    grid-template-columns: 1fr;
  }

  .brand-name {
    font-size: 0.9rem;
  }
}

@media (max-width: 575.98px) {
  .app-main {
    padding-top: 1rem;
  }

  .app-surface,
  .metric-card,
  .workflow-card,
  .drug-card {
    padding: 0.9rem;
  }

  .detail-row {
    grid-template-columns: 1fr;
    gap: 0.25rem;
  }

  .section-heading,
  .action-bar,
  .drug-card-header,
  .stack-item,
  .recommendation-topline,
  .timeline-list article,
  .review-summary,
  .review-actions {
    align-items: stretch;
    flex-direction: column;
  }

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

  .review-actions {
    grid-column: auto;
  }
}