:root {
  /* Palette moderne corrigée - fond visible et encadrement visible */
  --surface-2: #EAF0FF;
  --surface: #FFFFFF;
  --text: #0F172A;
  --muted: #64748B;
  --border: #C7D2FE;
  --border-strong: #A5B4FC;
  --border-hover: #818CF8;
  --radius: 20px;
  --radius-sm: 12px;
  --shadow: 0 20px 60px rgba(79,70,229,0.12), 0 2px 12px rgba(15,23,42,0.06);
  --shadow-sm: 0 8px 24px rgba(79,70,229,0.08);
  --focus: 0 0 0 4px rgba(99,102,241,0.20);
  --brand-bg: #FFFFFF;
  --brand-primary: #6366F1;
  --brand-primary-hover: #4F46E5;
  --brand-primary-contrast: #FFFFFF;
  --qr-bg: #FFFFFF;
  --danger: #EF4444;
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  padding: 0;
  color: var(--text);
  font: 16px/1.6 'Inter', system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, "Helvetica Neue", Arial;
  background: #EAF0FF;
  background-image:
    radial-gradient(900px 600px at 15% 0%, #DDD6FE 0%, transparent 70%),
    radial-gradient(800px 500px at 90% 10%, #C7D2FE 0%, transparent 60%);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* Haut de page - avec vraie couleur */
.app-header {
  background: linear-gradient(135deg, #FFFFFF 0%, #F5F3FF 100%);
  color: var(--text);
  padding: 26px 20px;
  box-shadow: 0 1px 0 #E0E7FF, 0 10px 30px rgba(99,102,241,0.08);
  border-bottom: 3px solid #A5B4FC;
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand {
  display: flex;
  gap: 18px;
  align-items: center;
  max-width: 1100px;
  margin: 0 auto;
}

.brand-logo {
  width: 44px;
  height: 44px;
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, #6366F1 0%, #8B5CF6 100%);
  border-radius: 12px;
  box-shadow: 0 6px 18px rgba(99,102,241,0.3);
}

.brand-text h1 {
  margin: 0;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
}

.subtitle {
  margin: 4px 0 0;
  color: var(--muted);
  opacity: 1;
  font-size: 14px;
  font-weight: 400;
}

.container { max-width: 1100px; margin: 32px auto; padding: 0 20px; }

.card {
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  margin: 20px 0;
  box-shadow: var(--shadow);
  transition: all .2s ease;
}

.card:hover {
  border-color: var(--border-strong);
  box-shadow: 0 28px 80px rgba(79,70,229,0.15), 0 4px 16px rgba(15,23,42,0.07);
}

.card h2 {
  color: var(--text);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 16px;
}

.grid { display: grid; gap: 18px; }
.grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
@media (max-width: 800px) { .grid.two, .grid.three { grid-template-columns: 1fr; } }

.field label {
  display: inline-block;
  font-size: 12.5px;
  color: var(--muted);
  margin-bottom: 8px;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}
.field input, .field select {
  width: 100%;
  padding: 13px 14px;
  border: 1.5px solid #C7D2FE;
  border-radius: var(--radius-sm);
  background: #F8FAFF;
  color: var(--text);
  font-size: 15px;
  transition: all .18s ease;
}
.field input::placeholder { color: #94A3B8; }
.field input:hover, .field select:hover {
  border-color: var(--border-hover);
  background: #FFFFFF;
}
.field input:focus, .field select:focus {
  outline: none;
  background: #FFFFFF;
  border-color: var(--brand-primary);
  box-shadow: var(--focus);
}

.actions.row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 20px; }
button {
  appearance: none;
  border: 0;
  border-radius: var(--radius-sm);
  padding: 12px 20px;
  cursor: pointer;
  font-weight: 600;
  font-size: 14.5px;
  transition: all .18s ease;
  letter-spacing: -0.01em;
}
button.primary {
  background: linear-gradient(135deg, #6366F1 0%, #7C3AED 100%);
  color: var(--brand-primary-contrast);
  box-shadow: 0 8px 20px rgba(99,102,241,0.3);
}
button.primary:hover { background: linear-gradient(135deg, #4F46E5 0%, #6D28D9 100%); transform: translateY(-1px); box-shadow: 0 10px 24px rgba(99,102,241,0.35); }
button.primary:active { transform: translateY(0); }

button.secondary { background: #EEF2FF; color: #4338CA; border: 1px solid #E0E7FF; }
button.secondary:hover { background: #E0E7FF; border-color: #C7D2FE; }

button.ghost { background: transparent; color: var(--text); border: 1px solid var(--border); }
button.ghost:hover { background: #F8FAFC; border-color: var(--border-hover); }

button.danger { background: var(--danger); color: #fff; }
button.danger:hover { background: #DC2626; }

button:focus-visible { outline: none; box-shadow: var(--focus); }

.qr-wrap { display: flex; justify-content: center; align-items: center; padding: 12px; }
.qr-container {
  width: 340px;
  height: 340px;
  border-radius: 20px;
  background: var(--qr-bg);
  display: grid;
  place-items: center;
  border: 2px solid #C7D2FE;
  box-shadow: var(--shadow-sm);
  padding: 16px;
}

.app-footer { text-align: center; padding: 32px 12px; color: var(--muted); font-size: 13px; }
.hint { font-size: 12.5px; color: var(--muted); margin-top: 10px; line-height: 1.5; }