:root {
  --bg-primary: #f8fafc;
  --bg-surface: #ffffff;
  --bg-subtle: #f1f5f9;
  --border-subtle: #e2e8f0;
  --border-strong: #cbd5e1;
  
  --text-main: #0f172a;
  --text-muted: #475569;
  --text-subtle: #64748b;
  --text-inverse: #ffffff;
  
  --nhs-blue: #005eb8;
  --nhs-dark: #003087;
  --teal-primary: #0d9488;
  --teal-dark: #0f766e;
  --emerald-success: #059669;
  --emerald-bg: #ecfdf5;
  --amber-warning: #d97706;
  --amber-bg: #fffbeb;
  --crimson-halt: #dc2626;
  --crimson-bg: #fef2f2;
  
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-full: 9999px;
  
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */
.app-header {
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  padding: 1rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: var(--shadow-sm);
}

.brand-container {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-logo {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  object-fit: cover;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-subtle);
}

.brand-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.brand-subtitle {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.mode-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background-color: var(--emerald-bg);
  color: var(--emerald-success);
  border: 1px solid #a7f3d0;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
}

.pulse-dot {
  width: 6px;
  height: 6px;
  background-color: var(--emerald-success);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.3); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

/* Stepper / Lifecycle Bar */
.stepper-bar {
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  padding: 0.75rem 1.5rem;
  display: flex;
  justify-content: center;
  overflow-x: auto;
}

.stepper-container {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  max-width: 960px;
  width: 100%;
}

.step-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-md);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-subtle);
  background-color: var(--bg-subtle);
  transition: all 0.2s ease;
}

.step-item.active {
  background-color: var(--nhs-blue);
  color: white;
  box-shadow: var(--shadow-sm);
}

.step-item.completed {
  background-color: var(--emerald-bg);
  color: var(--emerald-success);
  border: 1px solid #a7f3d0;
}

.step-gate {
  background-color: var(--amber-bg);
  color: var(--amber-warning);
  border: 1px solid #fde68a;
}

.step-gate.active {
  background-color: var(--amber-warning);
  color: white;
}

.step-divider {
  color: var(--border-strong);
  font-size: 0.75rem;
}

/* Main Layout */
.main-layout {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 1.5rem;
  padding: 1.5rem;
  flex: 1;
  max-width: 1440px;
  margin: 0 auto;
  width: 100%;
}

@media (max-width: 1024px) {
  .main-layout {
    grid-template-columns: 1fr;
  }
}

/* Panel Containers */
.panel {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.panel-header {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: #fafbfc;
}

.panel-title {
  font-size: 0.9375rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-main);
}

.panel-body {
  padding: 1.25rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

/* Form Controls */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.form-label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-muted);
}

.select-control, .input-control, .textarea-control {
  width: 100%;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 0.875rem;
  color: var(--text-main);
  background-color: var(--bg-surface);
  transition: border-color 0.15s ease;
}

.select-control:focus, .input-control:focus, .textarea-control:focus {
  outline: none;
  border-color: var(--nhs-blue);
  box-shadow: 0 0 0 3px rgba(0, 94, 184, 0.1);
}

.textarea-control {
  resize: vertical;
  min-height: 180px;
  font-size: 0.8125rem;
  line-height: 1.6;
}

/* PII Alert Box */
.pii-alert {
  display: none;
  background-color: var(--crimson-bg);
  border: 1px solid #fca5a5;
  color: var(--crimson-halt);
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  font-size: 0.8125rem;
  animation: shake 0.3s ease-in-out;
}

.pii-alert.show {
  display: block;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-4px); }
  75% { transform: translateX(4px); }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-primary {
  background-color: var(--nhs-blue);
  color: white;
}

.btn-primary:hover {
  background-color: var(--nhs-dark);
}

.btn-success {
  background-color: var(--emerald-success);
  color: white;
}

.btn-success:hover {
  background-color: #047857;
}

.btn-outline {
  background-color: transparent;
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
}

.btn-outline:hover {
  background-color: var(--bg-subtle);
  color: var(--text-main);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Workflow Stage Cards (Right Workspace) */
.stage-card {
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  background-color: var(--bg-surface);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: border-color 0.2s ease;
}

.stage-card.highlight-gate {
  border-color: var(--amber-warning);
  background-color: #fffdfa;
}

.stage-card.highlight-draft {
  border-color: var(--emerald-success);
  background-color: #fafdfc;
}

.stage-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-md);
  width: fit-content;
}

.badge-gate1 { background-color: #fef3c7; color: #b45309; }
.badge-verify { background-color: #e0f2fe; color: #0369a1; }
.badge-gate2 { background-color: #ecfdf5; color: #047857; }

/* Curation Tag Chips */
.tag-container {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.tag-chip {
  background-color: #e0f2fe;
  color: #0369a1;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-full);
}

.tag-chip.danger-rule {
  background-color: #fee2e2;
  color: #b91c1c;
  border: 1px solid #fca5a5;
}

/* 10-Point Score Grid */
.score-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 0.5rem;
}

.score-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--bg-subtle);
  padding: 0.4rem 0.65rem;
  border-radius: var(--radius-md);
  font-size: 0.75rem;
}

.score-value {
  font-weight: 700;
  padding: 0.15rem 0.4rem;
  border-radius: var(--radius-md);
  background-color: white;
  border: 1px solid var(--border-subtle);
}

.score-value.high { color: var(--emerald-success); }
.score-value.mid { color: var(--amber-warning); }

/* Draft Document Preview */
.draft-preview {
  background-color: white;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  font-size: 0.875rem;
  line-height: 1.7;
}

.draft-header-banner {
  background-color: #fff7ed;
  border-left: 4px solid var(--amber-warning);
  padding: 0.75rem 1rem;
  margin-bottom: 1rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: #9a3412;
}

.signoff-box {
  margin-top: 1.5rem;
  border: 2px dashed var(--border-strong);
  padding: 1.25rem;
  border-radius: var(--radius-md);
  background-color: #fafbfc;
}

/* Footer */
.app-footer {
  background-color: var(--bg-surface);
  border-top: 1px solid var(--border-subtle);
  padding: 1rem 1.5rem;
  font-size: 0.75rem;
  color: var(--text-subtle);
  text-align: center;
}