:root {
  --navy: #0B1F3A;
  --navy-light: #122845;
  --blue: #1B6FBA;
  --accent: #3D9BE9;
  --accent-light: #5db0f5;
  --bg: #f4f6fa;
  --card: #ffffff;
  --text: #1a2940;
  --text-muted: #6b7c93;
  --border: #dde3ee;
  --green: #27ae60;
  --red: #e74c3c;
  --radius: 10px;
  --shadow: 0 2px 12px rgba(11,31,58,0.08);
  --shadow-lg: 0 4px 24px rgba(11,31,58,0.13);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
}

/* NAV */
.nav {
  background: var(--navy);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}
.nav-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.3px;
}
.nav-subtitle {
  font-size: 11px;
  color: rgba(255,255,255,0.45);
  letter-spacing: 0.3px;
}

/* TABS BAR */
.tabs-bar {
  background: var(--navy-light);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.tabs-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  gap: 2px;
}
.tab-btn {
  background: none;
  border: none;
  color: rgba(255,255,255,0.55);
  padding: 12px 20px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  position: relative;
  transition: color 0.15s;
}
.tab-btn:hover { color: rgba(255,255,255,0.85); }
.tab-btn.active {
  color: #fff;
}
.tab-btn.active::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 2px;
  background: var(--accent);
}

/* CONTENT */
.content {
  max-width: 1280px;
  margin: 0 auto;
  padding: 28px 24px 60px;
}
.tab-panel { display: none; }
.tab-panel.active { display: block; }

.panel-header {
  margin-bottom: 24px;
}
.panel-header h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 4px;
}
.panel-header p {
  color: var(--text-muted);
  font-size: 13px;
}

/* CARD */
.card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  margin-bottom: 20px;
}
.card h3 {
  font-size: 14px;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* FORM GRID */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 20px;
  align-items: start;
}
.form-section {
  background: var(--card);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  border-top: 3px solid var(--accent);
}
.section-title {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--accent);
  margin-bottom: 16px;
}
.field-group {
  margin-bottom: 14px;
}
.field-group:last-child { margin-bottom: 0; }
.field-group label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 5px;
  text-transform: uppercase;
  letter-spacing: 0.4px;
}
.unit {
  font-weight: 400;
  color: #aaa;
  text-transform: none;
  letter-spacing: 0;
}
.field-group input, .field-group select {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
  color: var(--text);
  background: #fff;
  transition: border-color 0.15s, box-shadow 0.15s;
  -webkit-appearance: none;
}
.field-group input:focus, .field-group select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(61,155,233,0.12);
}
select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%236b7c93'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
}

/* STAR RATING */
.star-rating {
  display: flex;
  gap: 4px;
  margin-top: 2px;
}
.star {
  font-size: 24px;
  color: var(--border);
  cursor: pointer;
  transition: color 0.1s, transform 0.1s;
  user-select: none;
}
.star.active { color: #f39c12; }
.star:hover { transform: scale(1.15); }

/* FORM ACTIONS */
.form-actions {
  grid-column: 1 / -1;
  display: flex;
  justify-content: flex-end;
  padding-top: 4px;
}

/* BUTTONS */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--blue);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 11px 24px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, transform 0.1s;
}
.btn-primary:hover { background: var(--accent); }
.btn-primary:active { transform: scale(0.98); }
.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--bg);
  color: var(--blue);
  border: 1px solid var(--blue);
  border-radius: 8px;
  padding: 9px 18px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
}
.btn-secondary:hover { background: #e8f0fa; }
.btn-danger {
  background: none;
  border: none;
  color: var(--red);
  cursor: pointer;
  font-size: 13px;
  padding: 4px 8px;
}

/* RESULT CARD */
.result-card {
  margin-top: 24px;
  background: var(--navy);
  border-radius: var(--radius);
  padding: 28px 32px;
  color: #fff;
  box-shadow: var(--shadow-lg);
  animation: slideUp 0.3s ease;
}
.result-card.hidden { display: none; }
@keyframes slideUp {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}
.result-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 24px;
}
.result-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: rgba(255,255,255,0.5);
  margin-bottom: 6px;
}
.result-value {
  font-size: 52px;
  font-weight: 800;
  letter-spacing: -2px;
  color: var(--accent-light);
  line-height: 1;
  margin-bottom: 4px;
}
.result-sub {
  font-size: 12px;
  color: rgba(255,255,255,0.4);
}
.result-badge {
  font-size: 18px;
  font-weight: 700;
  padding: 8px 16px;
  border-radius: 8px;
  white-space: nowrap;
}
.result-band {
  margin-bottom: 20px;
}
.band-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: rgba(255,255,255,0.45);
  display: block;
  margin-bottom: 10px;
}
.band-bar-wrap {}
.band-bar {
  position: relative;
  height: 8px;
  background: rgba(255,255,255,0.12);
  border-radius: 4px;
  margin-bottom: 6px;
}
.band-fill {
  position: absolute;
  top: 0;
  height: 100%;
  background: var(--accent);
  opacity: 0.35;
  border-radius: 4px;
}
.band-marker {
  position: absolute;
  top: -4px;
  width: 16px;
  height: 16px;
  background: var(--accent-light);
  border-radius: 50%;
  border: 2px solid var(--navy);
  transform: translateX(-50%);
}
.band-labels {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: rgba(255,255,255,0.4);
}
.result-meta {
  display: flex;
  gap: 32px;
  padding-top: 16px;
  border-top: 1px solid rgba(255,255,255,0.1);
}
.meta-item {}
.meta-label {
  font-size: 11px;
  color: rgba(255,255,255,0.4);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  display: block;
  margin-bottom: 3px;
}
.meta-val {
  font-size: 14px;
  font-weight: 600;
  color: #fff;
}

/* WHAT-IF */
.whatif-controls {
  margin-bottom: 20px;
}
.whatif-row {
  display: flex;
  gap: 16px;
  align-items: flex-end;
}
.whatif-row .field-group {
  flex: 1;
  margin-bottom: 0;
}
.hint {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 12px;
}
.chart-card { margin-bottom: 20px; }
.insight-card {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
  color: #fff;
  border-radius: var(--radius);
  padding: 20px 24px;
  font-size: 14px;
  line-height: 1.6;
}
.insight-card.hidden { display: none; }

/* TEAM */
.team-kpis {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 20px;
}
.kpi-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  border-top: 3px solid var(--blue);
  text-align: center;
}
.kpi-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  margin-bottom: 8px;
}
.kpi-val {
  font-size: 28px;
  font-weight: 800;
  color: var(--navy);
  letter-spacing: -1px;
}
.team-list {
  margin-bottom: 20px;
}
.team-row {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px 20px;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.team-row-name { font-weight: 600; min-width: 140px; }
.team-row-meta { color: var(--text-muted); font-size: 12px; flex: 1; }
.team-row-eur {
  font-size: 18px;
  font-weight: 700;
  color: var(--blue);
  min-width: 130px;
  text-align: right;
}
.team-add h3 {
  margin-bottom: 14px;
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
}
.form-inline {
  display: flex;
  gap: 12px;
  align-items: flex-end;
  flex-wrap: wrap;
}
.form-inline .field-group { min-width: 100px; margin-bottom: 0; }

/* METRICS */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}
.metric-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  text-align: center;
}
.metric-card.accent { border-top: 3px solid var(--accent); }
.metric-val {
  font-size: 32px;
  font-weight: 800;
  color: var(--navy);
  letter-spacing: -1px;
}
.metric-card.accent .metric-val { color: var(--blue); }
.metric-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: 4px;
}
.metric-sub {
  font-size: 11px;
  color: #bbb;
  margin-top: 2px;
}
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}

/* COMPLIANCE */
.compliance-card {}
.compliance-intro {
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-muted);
  margin-bottom: 16px;
}
.compliance-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 16px;
}
.compliance-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 13px;
}
.badge {
  font-size: 10px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 4px;
  white-space: nowrap;
  flex-shrink: 0;
  margin-top: 2px;
}
.badge.removed { background: #fdecea; color: var(--red); }
.compliance-result {
  display: flex;
  align-items: center;
  gap: 8px;
  background: #eafaf1;
  padding: 10px 14px;
  border-radius: 6px;
  font-size: 13px;
  color: var(--green);
}

/* MODEL PARAMS TABLE */
.model-params { margin-top: 0; }
.param-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.param-table tr { border-bottom: 1px solid var(--border); }
.param-table tr:last-child { border-bottom: none; }
.param-table td {
  padding: 10px 12px;
}
.param-table td:first-child {
  font-weight: 600;
  color: var(--text-muted);
  width: 180px;
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: 0.4px;
}

/* FOOTER */
.footer {
  background: var(--navy);
  color: rgba(255,255,255,0.3);
  font-size: 11px;
  padding: 16px 24px;
  text-align: center;
  letter-spacing: 0.3px;
}

/* SPARSITY WARNING */
.sparsity-warning {
  background: rgba(243,156,18,0.15);
  border: 1px solid rgba(243,156,18,0.5);
  border-radius: 8px;
  padding: 10px 14px;
  margin-bottom: 16px;
  font-size: 12px;
  color: #f8c568;
  line-height: 1.5;
}
.sparsity-warning.hidden { display: none; }

/* LOADING STATE */
.btn-primary.loading {
  opacity: 0.7;
  pointer-events: none;
}

/* RESPONSIVE */
@media (max-width: 900px) {
  .form-grid { grid-template-columns: 1fr; }
  .metrics-grid { grid-template-columns: repeat(2, 1fr); }
  .two-col { grid-template-columns: 1fr; }
  .team-kpis { grid-template-columns: 1fr; }
  .whatif-row { flex-direction: column; }
  .result-value { font-size: 36px; }
  .result-meta { flex-wrap: wrap; gap: 16px; }
  .form-inline { flex-direction: column; }
}
@media (max-width: 600px) {
  .content { padding: 16px 12px 40px; }
  .nav-subtitle { display: none; }
  .metrics-grid { grid-template-columns: 1fr 1fr; }
}