/* ============================================
   MENUGAIN — DESIGN SYSTEM
   ============================================ */

/* --- Custom Properties --- */
:root {
  --color-bg: #FAF8F5;
  --color-surface: #FFFFFF;
  --color-surface-raised: #FFFFFF;
  --color-border: #E8E4DE;
  --color-border-light: #F0EDE8;

  --color-text-primary: #1C2333;
  --color-text-secondary: #6B7280;
  --color-text-muted: #9CA3AF;
  --color-text-inverse: #FFFFFF;

  --color-accent: #E8682A;
  --color-accent-hover: #D4581C;
  --color-accent-light: #FEF0E8;

  --color-navy: #1C2333;
  --color-navy-hover: #2D3748;
  --color-navy-active: #374151;

  --color-success: #2D7D5A;
  --color-success-bg: #EBF7F1;
  --color-success-border: #B7E4CE;

  --color-warning: #B97B14;
  --color-warning-bg: #FEF6E4;
  --color-warning-border: #FAD898;

  --color-error: #C13030;
  --color-error-bg: #FDEAEA;
  --color-error-border: #F5BBBB;

  --color-info: #1A6FA8;
  --color-info-bg: #E8F3FB;
  --color-info-border: #B3D7F0;

  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;

  --font-size-xs: 0.75rem;
  --font-size-sm: 0.8125rem;
  --font-size-base: 0.9375rem;
  --font-size-lg: 1.0625rem;
  --font-size-xl: 1.1875rem;
  --font-size-2xl: 1.375rem;
  --font-size-3xl: 1.75rem;
  --font-size-4xl: 2.25rem;

  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;

  --line-height-tight: 1.2;
  --line-height-snug: 1.4;
  --line-height-base: 1.6;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.07), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08), 0 2px 4px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1), 0 4px 8px rgba(0, 0, 0, 0.06);

  --transition-fast: 120ms ease;
  --transition-base: 180ms ease;
  --transition-slow: 280ms ease;

  --sidebar-width: 240px;
  --topbar-height: 60px;
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  color: var(--color-text-primary);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: var(--color-accent); text-decoration: none; }
a:hover { text-decoration: underline; }

img, svg { display: block; }

p { margin: 0 0 var(--space-4); }
p:last-child { margin-bottom: 0; }

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  color: var(--color-text-primary);
}

/* --- Auth Layout --- */
.auth-body {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg);
  padding: var(--space-6);
}

.auth-container {
  width: 100%;
  max-width: 420px;
}

.auth-brand {
  text-align: center;
  margin-bottom: var(--space-8);
}

.auth-logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-2);
}

.auth-logo-icon {
  width: 36px;
  height: 36px;
  background: var(--color-accent);
  color: white;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
}

.auth-logo-name {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

.auth-tagline {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  margin: 0;
}

.auth-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  box-shadow: var(--shadow-md);
}

.auth-heading {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-6);
  color: var(--color-text-primary);
}

.auth-subtext {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-6);
  margin-top: -var(--space-4);
}

.auth-back-link {
  display: block;
  text-align: center;
  margin-top: var(--space-4);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.auth-form { display: flex; flex-direction: column; gap: var(--space-5); }

/* --- App Layout --- */
.app-body {
  background: var(--color-bg);
  min-height: 100vh;
}

.app-layout {
  display: flex;
  min-height: 100vh;
}

.app-main {
  flex: 1;
  min-width: 0;
  margin-left: var(--sidebar-width);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.app-content {
  flex: 1;
  padding: var(--space-8);
  max-width: 1400px;
}

/* --- Sidebar --- */
.sidebar {
  width: var(--sidebar-width);
  background: var(--color-navy);
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  z-index: 100;
  transition: transform var(--transition-base);
}

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.sidebar-logo-mark {
  width: 30px;
  height: 30px;
  background: var(--color-accent);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: white;
  flex-shrink: 0;
}

.sidebar-brand-name {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: #FFFFFF;
}

.sidebar-close-btn {
  display: none;
  background: none;
  border: none;
  color: rgba(255,255,255,0.5);
  cursor: pointer;
  padding: var(--space-1);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast);
}

.sidebar-close-btn:hover { color: #FFFFFF; }

.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-4) 0;
  scrollbar-width: thin;
  scrollbar-color: rgba(255,255,255,0.1) transparent;
}

.sidebar-section {
  margin-bottom: var(--space-4);
  padding: 0 var(--space-3);
}

.sidebar-section-label {
  display: block;
  font-size: 0.6875rem;
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: rgba(255,255,255,0.35);
  padding: var(--space-2) var(--space-3);
  margin-bottom: var(--space-1);
}

.sidebar-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  color: rgba(255,255,255,0.65);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  transition: background var(--transition-fast), color var(--transition-fast);
  line-height: 1.4;
}

.sidebar-link:hover {
  background: rgba(255,255,255,0.08);
  color: #FFFFFF;
  text-decoration: none;
}

.sidebar-link.active {
  background: rgba(232, 104, 42, 0.18);
  color: #FFFFFF;
  position: relative;
}

.sidebar-link.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 3px;
  background: var(--color-accent);
  border-radius: 0 2px 2px 0;
}

.sidebar-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  opacity: 0.75;
}

.sidebar-link:hover .sidebar-icon,
.sidebar-link.active .sidebar-icon {
  opacity: 1;
}

.sidebar-footer {
  padding: var(--space-4) var(--space-4);
  border-top: 1px solid rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.sidebar-user {
  flex: 1;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-width: 0;
}

.sidebar-user-avatar {
  width: 32px;
  height: 32px;
  background: var(--color-accent);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: white;
  flex-shrink: 0;
}

.sidebar-user-info {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sidebar-user-name {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: rgba(255,255,255,0.9);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar-user-role {
  font-size: var(--font-size-xs);
  color: rgba(255,255,255,0.45);
}

.sidebar-logout-form { margin: 0; }

.sidebar-logout-btn {
  background: none;
  border: none;
  color: rgba(255,255,255,0.4);
  cursor: pointer;
  padding: var(--space-2);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color var(--transition-fast), background var(--transition-fast);
}

.sidebar-logout-btn:hover {
  color: var(--color-error);
  background: rgba(193,48,48,0.12);
}

/* --- Topbar --- */
.topbar {
  height: var(--topbar-height);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  padding: 0 var(--space-8);
  gap: var(--space-4);
  position: sticky;
  top: 0;
  z-index: 50;
}

.topbar-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--color-text-secondary);
  cursor: pointer;
  padding: var(--space-2);
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast), color var(--transition-fast);
}

.topbar-menu-btn:hover {
  background: var(--color-bg);
  color: var(--color-text-primary);
}

.topbar-breadcrumb { flex: 1; }

.topbar-page-title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.app-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  z-index: 90;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.app-overlay.visible {
  display: block;
  opacity: 1;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 9px var(--space-4);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  font-family: var(--font-family);
  line-height: 1;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
}

.btn:hover { text-decoration: none; }
.btn:disabled { opacity: 0.55; cursor: not-allowed; pointer-events: none; }

.btn-primary {
  background: var(--color-accent);
  color: white;
  border-color: var(--color-accent);
}

.btn-primary:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  color: white;
}

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text-primary);
  border-color: var(--color-border);
}

.btn-secondary:hover {
  background: var(--color-bg);
  border-color: #D0CBBF;
  color: var(--color-text-primary);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-secondary);
  border-color: transparent;
}

.btn-ghost:hover {
  background: var(--color-bg);
  color: var(--color-text-primary);
}

.btn-danger {
  background: var(--color-error-bg);
  color: var(--color-error);
  border-color: var(--color-error-border);
}

.btn-danger:hover {
  background: var(--color-error);
  color: white;
  border-color: var(--color-error);
}

.btn-sm {
  padding: 6px var(--space-3);
  font-size: var(--font-size-xs);
}

.btn-lg {
  padding: 12px var(--space-6);
  font-size: var(--font-size-base);
}

.btn-full { width: 100%; }

.btn-icon {
  width: 34px;
  height: 34px;
  padding: 0;
  border-radius: var(--radius-sm);
}

/* --- Forms --- */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.form-label-link {
  font-weight: var(--font-weight-regular);
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}

.form-label-link:hover { color: var(--color-accent); }

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 9px var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  font-family: var(--font-family);
  color: var(--color-text-primary);
  background: var(--color-surface);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
  line-height: 1.5;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(232, 104, 42, 0.12);
}

.form-input::placeholder,
.form-textarea::placeholder { color: var(--color-text-muted); }

.form-select { appearance: none; cursor: pointer; }

.form-textarea { resize: vertical; min-height: 100px; }

.form-help {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.form-error-message {
  font-size: var(--font-size-xs);
  color: var(--color-error);
}

.form-input.is-invalid { border-color: var(--color-error); }
.form-input.is-invalid:focus { box-shadow: 0 0 0 3px rgba(193, 48, 48, 0.12); }

/* --- Cards --- */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
}

.card-sm { padding: var(--space-4); }
.card-lg { padding: var(--space-8); }

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-5);
  gap: var(--space-4);
}

.card-title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

.card-subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-top: var(--space-1);
}

/* --- KPI Cards --- */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-5);
  margin-bottom: var(--space-8);
}

.kpi-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-5) var(--space-6);
  box-shadow: var(--shadow-sm);
}

.kpi-label {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-2);
}

.kpi-value {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  line-height: 1;
  margin-bottom: var(--space-2);
}

.kpi-value.unavailable {
  font-size: var(--font-size-xl);
  color: var(--color-text-muted);
}

.kpi-sub {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}

.kpi-cta {
  margin-top: var(--space-3);
  font-size: var(--font-size-xs);
  color: var(--color-accent);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
}

.kpi-cta:hover { text-decoration: underline; }

/* --- Alerts --- */
.alert {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  border: 1px solid;
  margin-bottom: var(--space-5);
}

.alert svg { flex-shrink: 0; margin-top: 1px; }

.alert-success {
  background: var(--color-success-bg);
  border-color: var(--color-success-border);
  color: var(--color-success);
}

.alert-error {
  background: var(--color-error-bg);
  border-color: var(--color-error-border);
  color: var(--color-error);
}

.alert-warning {
  background: var(--color-warning-bg);
  border-color: var(--color-warning-border);
  color: var(--color-warning);
}

.alert-info {
  background: var(--color-info-bg);
  border-color: var(--color-info-border);
  color: var(--color-info);
}

.alert-dismissible { position: relative; padding-right: var(--space-10); }

.alert-dismiss {
  position: absolute;
  right: var(--space-3);
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  color: inherit;
  opacity: 0.6;
  font-size: 1.2rem;
  line-height: 1;
  padding: 2px 4px;
}

.alert-dismiss:hover { opacity: 1; }

/* --- Tables --- */
.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-surface);
}

thead th {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
  white-space: nowrap;
}

tbody td {
  padding: var(--space-4);
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  border-bottom: 1px solid var(--color-border-light);
  vertical-align: middle;
}

tbody tr:last-child td { border-bottom: none; }

tbody tr {
  transition: background var(--transition-fast);
  cursor: default;
}

tbody tr:hover { background: var(--color-bg); }

tbody tr.selected {
  background: var(--color-accent-light);
  border-left: 3px solid var(--color-accent);
}

tbody tr.selected td:first-child { padding-left: calc(var(--space-4) - 3px); }

.table-empty {
  text-align: center;
  padding: var(--space-16) var(--space-8);
  color: var(--color-text-muted);
}

/* --- Status Badges --- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px var(--space-2);
  border-radius: var(--radius-full);
  font-size: 0.6875rem;
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.03em;
  text-transform: uppercase;
  border: 1px solid;
}

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  flex-shrink: 0;
}

.badge-success {
  background: var(--color-success-bg);
  color: var(--color-success);
  border-color: var(--color-success-border);
}

.badge-warning {
  background: var(--color-warning-bg);
  color: var(--color-warning);
  border-color: var(--color-warning-border);
}

.badge-error {
  background: var(--color-error-bg);
  color: var(--color-error);
  border-color: var(--color-error-border);
}

.badge-info {
  background: var(--color-info-bg);
  color: var(--color-info);
  border-color: var(--color-info-border);
}

.badge-neutral {
  background: var(--color-bg);
  color: var(--color-text-secondary);
  border-color: var(--color-border);
}

.badge-accent {
  background: var(--color-accent-light);
  color: var(--color-accent);
  border-color: rgba(232, 104, 42, 0.25);
}

/* Item analysis status badges */
.status-needs_data    { @extend .badge-warning; }
.status-needs_review  { @extend .badge-info; }
.status-opportunity   { @extend .badge-accent; }
.status-healthy       { @extend .badge-success; }
.status-not_available { @extend .badge-neutral; }

/* --- Empty States --- */
.empty-state {
  text-align: center;
  padding: var(--space-16) var(--space-8);
  max-width: 420px;
  margin: 0 auto;
}

.empty-state-icon {
  width: 56px;
  height: 56px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-5);
  color: var(--color-text-muted);
}

.empty-state-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.empty-state-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-base);
  margin-bottom: var(--space-6);
}

.empty-state-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}

/* --- Page Header --- */
.page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-6);
  margin-bottom: var(--space-8);
  flex-wrap: wrap;
}

.page-header-left { flex: 1; min-width: 0; }

.page-title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-1);
}

.page-subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.page-header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

/* --- Upload Zone --- */
.upload-zone {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-10) var(--space-8);
  text-align: center;
  transition: border-color var(--transition-fast), background var(--transition-fast);
  cursor: pointer;
}

.upload-zone:hover,
.upload-zone.drag-over {
  border-color: var(--color-accent);
  background: var(--color-accent-light);
}

.upload-zone-icon {
  width: 44px;
  height: 44px;
  margin: 0 auto var(--space-4);
  color: var(--color-text-muted);
}

.upload-zone-title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  margin-bottom: var(--space-1);
}

.upload-zone-sub {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.upload-zone-link {
  color: var(--color-accent);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
}

.upload-zone input[type="file"] {
  position: absolute;
  opacity: 0;
  pointer-events: none;
  width: 0;
  height: 0;
}

/* --- Split Layout (table + panel) --- */
.split-layout {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: var(--space-6);
  align-items: start;
}

.split-panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: calc(var(--topbar-height) + var(--space-6));
}

.split-panel-header {
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-3);
}

.split-panel-title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

.split-panel-body {
  padding: var(--space-5) var(--space-6);
}

.split-panel-footer {
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--color-border-light);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

/* --- Detail Rows (in panels) --- */
.detail-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-border-light);
  font-size: var(--font-size-sm);
}

.detail-row:last-child { border-bottom: none; }
.detail-label { color: var(--color-text-secondary); flex-shrink: 0; }
.detail-value { font-weight: var(--font-weight-medium); text-align: right; }
.detail-value.unavailable { color: var(--color-text-muted); font-weight: var(--font-weight-regular); font-style: italic; }

/* --- Action Status Colors --- */
.action-status-new       { @extend .badge-info; }
.action-status-planned   { @extend .badge-warning; }
.action-status-active    { @extend .badge-accent; }
.action-status-done      { @extend .badge-success; }
.action-status-dismissed { @extend .badge-neutral; }

/* --- Tabs --- */
.tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-6);
}

.tab-btn {
  padding: var(--space-3) var(--space-5);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: color var(--transition-fast), border-color var(--transition-fast);
  margin-bottom: -1px;
}

.tab-btn:hover { color: var(--color-text-primary); }

.tab-btn.active {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

/* --- Progress Bar --- */
.progress-bar-wrap {
  background: var(--color-border-light);
  border-radius: var(--radius-full);
  height: 6px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  border-radius: var(--radius-full);
  background: var(--color-accent);
  transition: width var(--transition-slow);
}

.progress-bar-fill.success { background: var(--color-success); }
.progress-bar-fill.warning { background: var(--color-warning); }
.progress-bar-fill.error   { background: var(--color-error); }

/* --- Pagination --- */
.pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-4);
  border-top: 1px solid var(--color-border);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.pagination-pages {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.page-btn {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: background var(--transition-fast), color var(--transition-fast);
  border: 1px solid transparent;
}

.page-btn:hover {
  background: var(--color-bg);
  color: var(--color-text-primary);
  text-decoration: none;
}

.page-btn.active {
  background: var(--color-accent);
  color: white;
  border-color: var(--color-accent);
}

.page-btn:disabled { opacity: 0.4; pointer-events: none; }

/* --- Stats Bar --- */
.stats-bar {
  display: flex;
  gap: var(--space-6);
  flex-wrap: wrap;
  margin-bottom: var(--space-6);
}

.stat-item { display: flex; flex-direction: column; gap: var(--space-1); }
.stat-value { font-size: var(--font-size-xl); font-weight: var(--font-weight-semibold); color: var(--color-text-primary); }
.stat-label { font-size: var(--font-size-xs); color: var(--color-text-muted); text-transform: uppercase; letter-spacing: 0.06em; font-weight: var(--font-weight-semibold); }

/* --- Signal / Insight Item --- */
.signal-list { display: flex; flex-direction: column; gap: var(--space-3); }

.signal-item {
  display: flex;
  gap: var(--space-3);
  padding: var(--space-3);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  border: 1px solid var(--color-border-light);
  font-size: var(--font-size-sm);
}

.signal-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  margin-top: 1px;
}

.signal-text { color: var(--color-text-secondary); line-height: var(--line-height-snug); }
.signal-text strong { color: var(--color-text-primary); }

/* --- Import Status Indicators --- */
.import-status-indicator {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  flex-shrink: 0;
}

.status-dot-ready, .status-dot-validated { background: var(--color-success); }
.status-dot-partial { background: var(--color-warning); }
.status-dot-failed { background: var(--color-error); }
.status-dot-uploaded, .status-dot-parsing { background: var(--color-info); }

/* --- File Upload History Row --- */
.file-row {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4);
  border-bottom: 1px solid var(--color-border-light);
  transition: background var(--transition-fast);
  cursor: pointer;
}

.file-row:last-child { border-bottom: none; }
.file-row:hover { background: var(--color-bg); }
.file-row.active-file { background: var(--color-accent-light); }

.file-icon {
  width: 36px;
  height: 36px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--color-text-muted);
}

.file-info { flex: 1; min-width: 0; }

.file-name {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.file-meta {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-top: 2px;
}

/* --- Utility Classes --- */
.text-muted { color: var(--color-text-muted); }
.text-secondary { color: var(--color-text-secondary); }
.text-success { color: var(--color-success); }
.text-warning { color: var(--color-warning); }
.text-error { color: var(--color-error); }
.text-accent { color: var(--color-accent); }

.text-xs { font-size: var(--font-size-xs); }
.text-sm { font-size: var(--font-size-sm); }
.text-lg { font-size: var(--font-size-lg); }
.text-xl { font-size: var(--font-size-xl); }

.font-medium   { font-weight: var(--font-weight-medium); }
.font-semibold { font-weight: var(--font-weight-semibold); }

.mb-0  { margin-bottom: 0; }
.mb-2  { margin-bottom: var(--space-2); }
.mb-4  { margin-bottom: var(--space-4); }
.mb-6  { margin-bottom: var(--space-6); }
.mb-8  { margin-bottom: var(--space-8); }

.mt-4  { margin-top: var(--space-4); }
.mt-6  { margin-top: var(--space-6); }
.mt-8  { margin-top: var(--space-8); }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.flex-1 { flex: 1; }
.flex-wrap { flex-wrap: wrap; }
.min-w-0 { min-width: 0; }

.truncate { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

.divider {
  border: none;
  border-top: 1px solid var(--color-border-light);
  margin: var(--space-5) 0;
}

/* --- Grid Utilities --- */
.grid { display: grid; }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }
.gap-grid { gap: var(--space-5); }

/* --- Modals --- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.45);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
}

.modal-overlay.open {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  overflow-y: auto;
  transform: translateY(8px);
  transition: transform var(--transition-base);
}

.modal-overlay.open .modal { transform: translateY(0); }

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--color-border);
}

.modal-title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
}

.modal-close {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text-muted);
  padding: var(--space-1);
  border-radius: var(--radius-sm);
  display: flex;
  transition: color var(--transition-fast);
}

.modal-close:hover { color: var(--color-text-primary); }

.modal-body {
  padding: var(--space-6);
}

.modal-footer {
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-3);
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .split-layout {
    grid-template-columns: 1fr;
  }
  .split-panel {
    position: static;
  }
}

@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .sidebar-close-btn { display: flex; }

  .app-main {
    margin-left: 0;
  }

  .topbar {
    padding: 0 var(--space-4);
  }

  .topbar-menu-btn { display: flex; }

  .app-content {
    padding: var(--space-5) var(--space-4);
  }

  .kpi-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-3);
  }

  .page-header {
    flex-direction: column;
    gap: var(--space-4);
  }

  .page-header-actions {
    width: 100%;
  }

  .grid-cols-2, .grid-cols-3, .grid-cols-4 {
    grid-template-columns: 1fr;
  }

  .stats-bar {
    gap: var(--space-4);
  }
}

@media (max-width: 480px) {
  .kpi-grid {
    grid-template-columns: 1fr;
  }

  .auth-card {
    padding: var(--space-6);
  }
}