:root {
  --color-bg: #0b1120;
  --color-surface: #151f32;
  --color-surface-elevated: #1e293b;
  --color-border: #334155;
  --color-text: #f8fafc;
  --color-text-muted: #cbd5e1;
  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-primary-text: #ffffff;
  --color-accent: #38bdf8;
  --color-success-bg: #064e3b;
  --color-success-text: #a7f3d0;
  --color-success-border: #10b981;
  --color-warning-bg: #451a03;
  --color-warning-text: #fde68a;
  --color-warning-border: #f59e0b;
  --color-danger-bg: #450a0a;
  --color-danger-text: #fecaca;
  --color-danger-border: #ef4444;
  --color-focus-ring: #60a5fa;
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

body {
  margin: 0;
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  font-size: 1rem;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Visually hidden utility (accessible to screen readers) */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.skip-link:focus {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  width: auto;
  height: auto;
  padding: 0.75rem 1.25rem;
  margin: 0;
  overflow: visible;
  clip: auto;
  clip-path: none;
  background-color: var(--color-primary);
  color: var(--color-primary-text);
  font-weight: 700;
  border-radius: var(--radius-sm);
  z-index: 9999;
  text-decoration: none;
  box-shadow: 0 0 0 3px var(--color-focus-ring);
  outline: 2px solid transparent;
}

/* Resilient focus indicator for normal and Forced Colors modes */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[tabindex="0"]:focus-visible {
  box-shadow: 0 0 0 3px var(--color-focus-ring);
  outline: 2px solid transparent;
  outline-offset: 2px;
}

.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* Header */
.site-header {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 1rem 0;
}

.header-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand-block {
  min-width: 0;
}

.brand-badge {
  display: inline-block;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--color-accent);
}

.brand-subtitle {
  margin: 0.25rem 0 0;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.header-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.nav-link {
  color: var(--color-text);
  text-decoration: underline;
  text-underline-offset: 0.25rem;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0.35rem 0.6rem;
  border-radius: var(--radius-sm);
}

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

/* Main & Hero */
.main-content {
  flex: 1;
  padding-top: 1.5rem;
  padding-bottom: 3rem;
}

.hero-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}

.hero-text {
  flex: 1 1 20rem;
  min-width: 0;
}

h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  line-height: 1.25;
}

.lead-text {
  margin: 0;
  color: var(--color-text-muted);
  max-width: 75ch;
}

/* KPI Grid */
.kpi-grid {
  list-style: none;
  padding: 0;
  margin: 0 0 2rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr));
  gap: 1rem;
}

.kpi-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.15rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  min-width: 0;
}

.kpi-label {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  font-weight: 600;
}

.kpi-value {
  font-size: 1.65rem;
  font-weight: 800;
  color: var(--color-accent);
}

.kpi-meta {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* Buttons & Links */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  font-family: inherit;
  font-size: 0.925rem;
  font-weight: 600;
  padding: 0.6rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  line-height: 1.3;
  overflow-wrap: anywhere;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-primary-text);
  border-color: var(--color-focus-ring);
}

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

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

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

/* Tabs */
.tablist {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  border-bottom: 2px solid var(--color-border);
  padding-bottom: 0.5rem;
  margin-bottom: 1.5rem;
}

.tab-btn {
  background-color: var(--color-surface);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.65rem 1rem;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
}

.tab-btn[aria-selected="true"] {
  background-color: var(--color-primary);
  color: var(--color-primary-text);
  border-color: var(--color-focus-ring);
}

.tabpanel {
  min-width: 0;
}

.panel-header h2 {
  margin: 0 0 0.35rem;
  font-size: 1.35rem;
}

.section-desc {
  margin: 0 0 1.25rem;
  color: var(--color-text-muted);
}

/* Filter Form */
.filter-form {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1rem;
  margin-bottom: 1.5rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 210px), 1fr));
  gap: 1rem;
  align-items: end;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  min-width: 0;
}

.form-group label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text);
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 0.55rem 0.75rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background-color: var(--color-surface-elevated);
  color: var(--color-text);
  font-size: 0.95rem;
  font-family: inherit;
}

.form-actions {
  display: flex;
  align-items: center;
}

/* Opportunity Cards */
.cards-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

.opp-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  min-width: 0;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.opp-card-header {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
}

.opp-title {
  margin: 0;
  font-size: 1.15rem;
  color: var(--color-text);
}

.badges-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 700;
  border: 1px solid var(--color-border);
}

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

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

.badge-obs-alert {
  background-color: var(--color-danger-bg);
  color: var(--color-danger-text);
  border-color: var(--color-danger-border);
}

.opp-meta-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 200px), 1fr));
  gap: 0.5rem 1rem;
  margin: 0;
  padding: 0.75rem;
  background-color: var(--color-surface-elevated);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
}

.opp-meta-item {
  min-width: 0;
}

.opp-meta-item strong {
  color: var(--color-text-muted);
}

.opp-desc {
  margin: 0;
  font-size: 0.95rem;
  color: var(--color-text);
}

.obs-box {
  border-left: 4px solid var(--color-accent);
  background-color: var(--color-surface-elevated);
  padding: 0.75rem 1rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 0.9rem;
}

.obs-box-warning {
  border-left-color: var(--color-danger-border);
}

.card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  padding-top: 0.25rem;
}

/* Dossier layout */
.dossier-layout {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 340px), 1fr));
  gap: 1.25rem;
}

.dossier-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  min-width: 0;
  overflow-wrap: anywhere;
}

.dossier-card h3 {
  margin-top: 0;
  color: var(--color-accent);
}

.dossier-list {
  padding-left: 1.2rem;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

/* Native Dialog Modal */
.modal-dialog {
  width: min(92vw, 860px);
  max-height: 90vh;
  background-color: var(--color-surface);
  color: var(--color-text);
  border: 2px solid var(--color-focus-ring);
  border-radius: var(--radius-md);
  padding: 1.25rem;
}

.modal-dialog::backdrop {
  background-color: rgba(0, 0, 0, 0.75);
}

.modal-content {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.modal-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.modal-header h2 {
  margin: 0;
  font-size: 1.2rem;
}

.modal-meta {
  margin: 0;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.obs-textarea {
  width: 100%;
  background-color: var(--color-bg);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.85rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.875rem;
  line-height: 1.5;
  resize: vertical;
}

/* Footer */
.site-footer {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 1.25rem 0;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.footer-inner p {
  margin: 0.25rem 0;
}

/* Forced Colors Mode (Windows High Contrast) */
@media (forced-colors: active) {
  .opp-card,
  .kpi-card,
  .dossier-card,
  .filter-form,
  .modal-dialog {
    background-color: Canvas;
    color: CanvasText;
    border: 1px solid ButtonBorder;
  }

  .btn,
  .tab-btn {
    background-color: ButtonFace;
    color: ButtonText;
    border: 1px solid ButtonBorder;
  }

  .tab-btn[aria-selected="true"] {
    background-color: Highlight;
    color: HighlightText;
    border-color: Highlight;
  }

  .nav-link {
    color: LinkText;
  }
}