:root {
  --navy:       #0F172A;
  --blue:       #2563EB;
  --blue-light: #EFF6FF;
  --blue-mid:   #BFDBFE;
  --green:      #059669;
  --green-light:#ECFDF5;
  --amber:      #D97706;
  --amber-light:#FFFBEB;
  --red:        #DC2626;
  --red-light:  #FEF2F2;
  --gray-50:    #F8FAFC;
  --gray-100:   #F1F5F9;
  --gray-200:   #E2E8F0;
  --gray-400:   #94A3B8;
  --gray-600:   #475569;
  --gray-900:   #0F172A;
  --white:      #FFFFFF;
  --shadow:     0 1px 4px rgba(0,0,0,0.06), 0 4px 16px rgba(0,0,0,0.06);
  --shadow-lg:  0 8px 32px rgba(0,0,0,0.1);
  --radius:     12px;
}

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

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: #F4F6FA;
  color: var(--gray-900);
  line-height: 1.6;
  min-height: 100vh;
}

/* ══════════════════════════════════════
   HEADER
══════════════════════════════════════ */
header {
  background: var(--navy);
  padding: 28px 48px;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 12px rgba(0,0,0,0.15);
}

.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.header-brand {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

header h1 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: -0.01em;
}

.header-sub {
  font-size: 0.78rem;
  color: var(--gray-400);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.header-stats {
  display: flex;
  gap: 8px;
}

.stat-chip {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 8px;
  padding: 10px 20px;
  text-align: center;
  min-width: 80px;
}

.stat-chip span {
  display: block;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--white);
  line-height: 1;
}

.stat-chip label {
  display: block;
  font-size: 0.68rem;
  color: var(--gray-400);
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* ══════════════════════════════════════
   MAIN & LAYOUT
══════════════════════════════════════ */
main {
  max-width: 1100px;
  margin: 40px auto;
  padding: 0 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.row-two {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

/* ══════════════════════════════════════
   CARDS
══════════════════════════════════════ */
.card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
  border: 1px solid var(--gray-200);
}

.card-header {
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--gray-100);
}

.card-header h2 {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--gray-400);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* ══════════════════════════════════════
   FORMULAIRE
══════════════════════════════════════ */
.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--gray-600);
  margin-bottom: 7px;
  letter-spacing: 0.02em;
}

input[type="text"],
input[type="number"],
select,
textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid var(--gray-200);
  border-radius: 8px;
  font-size: 0.92rem;
  font-family: inherit;
  background: var(--gray-50);
  color: var(--gray-900);
  transition: border-color 0.15s, box-shadow 0.15s, background 0.15s;
  appearance: none;
}

input[type="text"]:focus,
input[type="number"]:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--blue);
  background: var(--white);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.08);
}

textarea {
  resize: vertical;
  min-height: 80px;
}

.checkbox-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--gray-600);
  cursor: pointer;
  padding: 9px 13px;
  border-radius: 7px;
  border: 1.5px solid var(--gray-200);
  transition: all 0.15s;
  background: var(--gray-50);
}

.checkbox-label:hover {
  background: var(--blue-light);
  border-color: var(--blue-mid);
  color: var(--blue);
}

.checkbox-label input {
  width: 15px;
  height: 15px;
  accent-color: var(--blue);
  cursor: pointer;
  flex-shrink: 0;
}

.label-hint {
  font-size: 0.74rem;
  font-weight: 400;
  color: var(--gray-400);
  margin-left: 4px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.btn-submit {
  width: 100%;
  padding: 12px;
  background: var(--navy);
  color: var(--white);
  border: none;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  margin-top: 8px;
  letter-spacing: 0.03em;
  transition: background 0.15s, transform 0.1s;
}

.btn-submit:hover {
  background: #1E293B;
}

.btn-submit:active {
  transform: scale(0.99);
}

/* ══════════════════════════════════════
   ÉTAT VIDE
══════════════════════════════════════ */
.empty-state {
  text-align: center;
  padding: 48px 20px;
  color: var(--gray-400);
}

.empty-state p {
  font-size: 0.88rem;
  line-height: 1.7;
}

.empty-state p:first-child {
  font-size: 1.8rem;
  margin-bottom: 10px;
  opacity: 0.3;
}

/* ══════════════════════════════════════
   RÉSULTAT
══════════════════════════════════════ */
.result-verdict {
  border-radius: 8px;
  padding: 16px 18px;
  margin-bottom: 14px;
  border-left: 4px solid;
}

.result-verdict.vert   { background: var(--green-light); border-color: var(--green); }
.result-verdict.orange { background: var(--amber-light); border-color: var(--amber); }
.result-verdict.rouge  { background: var(--red-light);   border-color: var(--red); }

.verdict-emoji { display: none; }

.verdict-text strong {
  display: block;
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 3px;
}

.verdict-text span {
  font-size: 0.82rem;
  color: var(--gray-600);
}

.gain-card {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 14px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  text-align: center;
}

.gain-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 8px 0;
  border-right: 1px solid var(--gray-200);
}

.gain-stat:last-child {
  border-right: none;
}

.gain-stat .gain-number {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--navy);
  line-height: 1;
}

.gain-stat .gain-label {
  font-size: 0.7rem;
  color: var(--gray-400);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}

.scores-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 14px;
}

.score-box {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: 8px;
  padding: 14px;
}

.score-label {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--gray-400);
  margin-bottom: 8px;
}

.score-number {
  font-size: 1.8rem;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 10px;
}

.score-box.valeur .score-number { color: var(--green); }
.score-box.risque .score-number { color: var(--red); }

.score-bar-bg {
  height: 4px;
  background: var(--gray-200);
  border-radius: 99px;
  overflow: hidden;
}

.score-bar-fill {
  height: 100%;
  border-radius: 99px;
  transition: width 0.5s ease;
}

.score-box.valeur .score-bar-fill { background: var(--green); }
.score-box.risque .score-bar-fill { background: var(--red); }

.reco-list {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: 8px;
  padding: 14px 16px;
}

.reco-title {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--gray-400);
  margin-bottom: 10px;
}

.reco-list p {
  font-size: 0.86rem;
  color: var(--gray-600);
  padding: 6px 0;
  border-bottom: 1px solid var(--gray-200);
  line-height: 1.5;
}

.reco-list p:last-child { border-bottom: none; }

/* ══════════════════════════════════════
   TABLEAU
══════════════════════════════════════ */
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.86rem;
  margin-top: 8px;
}

thead th {
  background: var(--gray-50);
  color: var(--gray-400);
  padding: 10px 14px;
  text-align: left;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  font-weight: 700;
  border-bottom: 1px solid var(--gray-200);
}

tbody td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--gray-100);
  color: var(--gray-600);
  vertical-align: middle;
}

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

tbody tr:hover td { background: var(--gray-50); }

.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 4px;
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.badge.vert   { background: var(--green-light); color: var(--green); }
.badge.orange { background: var(--amber-light); color: var(--amber); }
.badge.rouge  { background: var(--red-light);   color: var(--red); }

/* ══════════════════════════════════════
   EXPORT
══════════════════════════════════════ */
.export-bar {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
}

.btn-export {
  padding: 8px 16px;
  border-radius: 7px;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: filter 0.15s, transform 0.1s;
  letter-spacing: 0.02em;
}

.btn-export:hover {
  filter: brightness(0.95);
  transform: translateY(-1px);
}

/* ══════════════════════════════════════
   GRAPHIQUES
══════════════════════════════════════ */
.charts-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.chart-box {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: 10px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.chart-box h3 {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--gray-400);
  margin-bottom: 16px;
  text-align: center;
  align-self: flex-start;
}

.chart-box--full {
  grid-column: 1 / -1;
  max-width: 460px;
  margin: 0 auto;
  width: 100%;
}

.chart-box--scatter {
  grid-column: 1 / -1;
}

.gauge-label {
  margin-top: 10px;
  font-size: 0.85rem;
  font-weight: 600;
  text-align: center;
  color: var(--gray-600);
}

.scatter-legend {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 14px;
}

.scatter-legend-item {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 0.78rem;
  color: var(--gray-600);
}

.scatter-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* ══════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════ */
@media (max-width: 768px) {
  header { padding: 20px; }
  .header-inner { flex-direction: column; align-items: flex-start; }
  .row-two { grid-template-columns: 1fr; }
  .charts-grid { grid-template-columns: 1fr; }
  .chart-box--full { grid-column: 1; max-width: 100%; }
  main { padding: 0 16px; margin: 20px auto; }
}