:root {
  --color-primary: #325935;
  --color-primary-light: #4d7a50;
  --color-primary-dark: #1f3b22;
  --color-bg-canvas: #f7f8fa;
  --color-bg-surface: #ffffff;
  --color-bg-dark: #161c17;
  --color-border-default: #d9dee7;
  --color-text-primary: #111827;
  --color-text-secondary: #4b5563;
  --color-info: #2563eb;
  --color-success: #15803d;
  --color-warning: #b45309;
  --color-danger: #b91c1c;
  --color-focus-ring: #0ea5e9;

  --font-family-display: "Nunito Sans", "Segoe UI", sans-serif;
  --font-family-base: "IBM Plex Sans", "Segoe UI", sans-serif;
  --font-family-mono: "IBM Plex Mono", "SFMono-Regular", monospace;

  --font-size-xs: 12px;
  --font-size-sm: 14px;
  --font-size-md: 16px;
  --font-size-lg: 20px;
  --font-size-xl: 28px;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-pill: 9999px;

  --shadow-card: 0 1px 2px rgba(0, 0, 0, 0.08);
  --shadow-raised: 0 6px 18px rgba(0, 0, 0, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at 20% -5%, rgba(77, 122, 80, 0.2), transparent 42%), var(--color-bg-canvas);
  color: var(--color-text-primary);
  font-family: var(--font-family-base);
  font-size: var(--font-size-sm);
  line-height: 1.45;
}

h1,
h2,
h3,
h4,
p {
  margin: 0;
}

.app-shell {
  max-width: 1440px;
  margin: 0 auto;
  min-height: 100vh;
}

.app-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-4);
  padding: var(--space-5);
  border-bottom: 1px solid var(--color-border-default);
  background: rgba(247, 248, 250, 0.94);
  backdrop-filter: blur(8px);
}

.eyebrow {
  color: var(--color-primary-dark);
  font-size: var(--font-size-xs);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

h1 {
  font-family: var(--font-family-display);
  font-size: var(--font-size-xl);
  line-height: 1.2;
}

.subhead {
  margin-top: var(--space-2);
  color: var(--color-text-secondary);
}

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

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

.shell-main {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: var(--space-5);
  padding: var(--space-5);
  padding-bottom: 88px;
}

.side-nav {
  position: sticky;
  top: 130px;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  align-self: start;
}

.nav-btn {
  width: 100%;
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-md);
  background: var(--color-bg-surface);
  color: var(--color-text-secondary);
  font-weight: 600;
  text-align: left;
  padding: var(--space-3) var(--space-4);
  cursor: pointer;
  transition: border-color 120ms ease, color 120ms ease, background 120ms ease;
}

.nav-btn:hover {
  border-color: var(--color-primary-light);
  color: var(--color-primary-dark);
}

.nav-btn.is-active {
  border-color: var(--color-primary);
  background: rgba(50, 89, 53, 0.1);
  color: var(--color-primary-dark);
}

.content-region {
  min-width: 0;
}

.feedback {
  min-height: 24px;
  margin-bottom: var(--space-3);
  padding: 0 var(--space-2);
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}

.feedback.success {
  color: var(--color-success);
}

.feedback.error {
  color: var(--color-danger);
}

.toast {
  position: fixed;
  right: var(--space-4);
  bottom: calc(88px + env(safe-area-inset-bottom));
  z-index: 40;
  max-width: min(90vw, 420px);
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  padding: var(--space-2) var(--space-3);
  box-shadow: var(--shadow-raised);
  font-size: var(--font-size-sm);
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  transition: opacity 180ms ease, transform 180ms ease;
}

.toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.toast.success {
  background: #f2fbf5;
  border-color: rgba(21, 128, 61, 0.3);
  color: var(--color-success);
}

.toast.info {
  background: #eef4ff;
  border-color: rgba(37, 99, 235, 0.25);
  color: var(--color-info);
}

.screen {
  display: none;
  gap: var(--space-4);
}

.screen.is-active {
  display: grid;
}

.panel {
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-lg);
  background: var(--color-bg-surface);
  box-shadow: var(--shadow-card);
  padding: var(--space-4);
}

.panel-header {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  margin-bottom: var(--space-3);
}

.panel-header h2,
.panel-header h3,
.panel-header h4 {
  font-family: var(--font-family-display);
  font-size: var(--font-size-lg);
}

.panel-header p {
  color: var(--color-text-secondary);
}

.dashboard-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-3);
}

.kpi-card {
  border: 1px solid var(--color-border-default);
  border-left: 4px solid var(--color-info);
  border-radius: var(--radius-md);
  padding: var(--space-3);
  background: var(--color-bg-surface);
}

.kpi-card h4 {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.kpi-card p {
  margin-top: var(--space-2);
  font-family: var(--font-family-display);
  font-size: 30px;
  line-height: 1;
}

.kpi-card.warning {
  border-left-color: var(--color-warning);
}

.kpi-card.danger {
  border-left-color: var(--color-danger);
}

.kpi-card.success {
  border-left-color: var(--color-success);
}

.kpi-card.info {
  border-left-color: var(--color-info);
}

.state {
  border: 1px dashed var(--color-border-default);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  background: #fafbfc;
}

.state h4 {
  font-family: var(--font-family-display);
  margin-bottom: var(--space-2);
}

.state p {
  color: var(--color-text-secondary);
}

.state-error {
  border-color: rgba(185, 28, 28, 0.4);
  background: rgba(185, 28, 28, 0.05);
}

.state-loading .skeleton-row {
  height: 14px;
  border-radius: var(--radius-pill);
  margin-bottom: var(--space-2);
  background: linear-gradient(90deg, #eef2f7, #f7f9fb, #eef2f7);
  background-size: 240% 100%;
  animation: shimmer 1.8s infinite linear;
}

.state-loading .skeleton-row:last-child {
  width: 60%;
}

@keyframes shimmer {
  from {
    background-position: 100% 0;
  }

  to {
    background-position: -100% 0;
  }
}

.btn {
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  padding: 9px 12px;
  font-size: var(--font-size-sm);
  font-weight: 600;
  font-family: var(--font-family-base);
  cursor: pointer;
}

.btn:focus-visible,
.nav-btn:focus-visible,
select:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--color-focus-ring);
  outline-offset: 2px;
}

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

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

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

.btn-secondary:hover {
  border-color: var(--color-primary-light);
}

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

.btn-danger-outline:hover {
  background: rgba(185, 28, 28, 0.08);
}

.table-wrap {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-md);
}

table {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
}

th,
td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--color-border-default);
  vertical-align: top;
}

th {
  background: #f3f6f8;
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-secondary);
}

tr:last-child td {
  border-bottom: 0;
}

tr.is-selected td {
  background: rgba(50, 89, 53, 0.08);
}

.status-badge {
  display: inline-flex;
  align-items: center;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  padding: 2px 8px;
  font-size: var(--font-size-xs);
  font-weight: 700;
}

.status-badge.neutral {
  background: #eef2f7;
  color: var(--color-text-secondary);
}

.status-badge.success {
  background: rgba(21, 128, 61, 0.11);
  color: var(--color-success);
}

.status-badge.warning {
  background: rgba(180, 83, 9, 0.12);
  color: var(--color-warning);
}

.status-badge.danger {
  background: rgba(185, 28, 28, 0.12);
  color: var(--color-danger);
}

.status-badge.info {
  background: rgba(37, 99, 235, 0.12);
  color: var(--color-info);
}

.split-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: var(--space-4);
}

.split-main {
  min-width: 0;
}

.split-detail {
  display: grid;
  align-content: start;
  gap: var(--space-3);
}

.detail-card {
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-md);
  background: #fcfdff;
  padding: var(--space-3);
  display: grid;
  gap: var(--space-2);
}

.detail-card h3,
.detail-card h4 {
  font-family: var(--font-family-display);
  font-size: var(--font-size-md);
}

.bulk-bar,
.decision-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.filter-bar label {
  display: grid;
  gap: var(--space-1);
  color: var(--color-text-secondary);
  font-size: var(--font-size-xs);
  font-weight: 600;
}

.filter-bar label.grow {
  flex: 1;
  min-width: 220px;
}

select,
input,
textarea {
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-sm);
  background: #fff;
  color: var(--color-text-primary);
  padding: 8px 10px;
  font: inherit;
}

textarea {
  resize: vertical;
}

.decision-form {
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-md);
  background: #fcfdff;
  padding: var(--space-3);
  display: grid;
  gap: var(--space-2);
}

.decision-form label {
  display: grid;
  gap: var(--space-1);
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--color-text-secondary);
}

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

.form-error {
  min-height: 18px;
  color: var(--color-danger);
  font-size: var(--font-size-xs);
}

.diff-view {
  margin: 0;
  max-height: 210px;
  overflow: auto;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border-default);
  padding: var(--space-2);
  background: #f3f6f8;
  font-family: var(--font-family-mono);
  font-size: var(--font-size-xs);
}

.mono {
  font-family: var(--font-family-mono);
  word-break: break-all;
}

.mobile-cards {
  display: none;
  gap: var(--space-2);
}

.mobile-card {
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-md);
  padding: var(--space-3);
  display: grid;
  gap: var(--space-2);
  background: var(--color-bg-surface);
}

.mobile-card header,
.mobile-card footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-2);
}

.mobile-card.is-selected {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-card);
}

.bottom-nav {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  display: none;
  gap: var(--space-2);
  background: rgba(255, 255, 255, 0.95);
  border-top: 1px solid var(--color-border-default);
  padding: var(--space-2) var(--space-3) calc(var(--space-2) + env(safe-area-inset-bottom));
}

.bottom-nav .nav-btn {
  text-align: center;
}

.sticky-actions {
  position: sticky;
  bottom: var(--space-2);
  background: #fcfdff;
  padding-top: var(--space-2);
}

.executive-layout {
  grid-template-columns: minmax(0, 1.4fr) minmax(300px, 1fr);
}

.executive-list {
  display: grid;
  gap: var(--space-3);
}

.executive-item {
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, #ffffff, #f8fbf8);
  padding: var(--space-3);
  display: grid;
  gap: var(--space-2);
  cursor: pointer;
}

.executive-item header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-2);
}

.executive-item h3 {
  font-family: var(--font-family-display);
  font-size: var(--font-size-md);
}

.executive-item.is-selected {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px rgba(50, 89, 53, 0.15);
}

.executive-why {
  color: var(--color-text-primary);
}

.executive-detail {
  position: sticky;
  top: 132px;
}

.technical-details summary {
  font-weight: 700;
  cursor: pointer;
}

@media (max-width: 1200px) {
  .split-layout {
    grid-template-columns: minmax(0, 1fr) 310px;
  }
}

@media (max-width: 1023px) {
  .shell-main {
    grid-template-columns: 1fr;
    padding-top: var(--space-4);
  }

  .side-nav {
    display: none;
  }

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

  .split-layout {
    grid-template-columns: 1fr;
  }

  .split-detail {
    order: -1;
  }
}

@media (max-width: 767px) {
  .app-header {
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-4);
  }

  .header-actions {
    justify-content: space-between;
  }

  .shell-main {
    padding: var(--space-3);
    padding-bottom: 92px;
    gap: var(--space-3);
  }

  .bottom-nav {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
  }

  .desktop-table {
    display: none;
  }

  .mobile-cards {
    display: grid;
  }

  .panel {
    padding: var(--space-3);
  }

  .filter-bar {
    display: grid;
    grid-template-columns: 1fr;
  }

  .filter-bar label.grow {
    min-width: 0;
  }

  .executive-detail {
    position: static;
  }

  .executive-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .executive-actions .btn {
    width: 100%;
  }

  .toast {
    right: var(--space-3);
    left: var(--space-3);
    bottom: calc(86px + env(safe-area-inset-bottom));
    max-width: none;
  }
}