:root {
  --bg: #f5f7fb;
  --surface: #ffffff;
  --surface-soft: #eef3ff;
  --text: #1a2233;
  --muted: #667085;
  --primary: #2f5bea;
  --primary-dark: #2046c8;
  --border: #dfe4ea;
  --danger: #b42318;
  --success: #067647;
  --warning: #b54708;
  --shadow: 0 8px 24px rgba(16, 24, 40, 0.08);
}

* { box-sizing: border-box; }
body { margin: 0; font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; background: var(--bg); color: var(--text); }
button, input, textarea, select { font: inherit; }
button { cursor: pointer; }

.app-header { display: flex; justify-content: space-between; align-items: center; gap: 24px; padding: 20px 28px; background: var(--surface); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 10; }
.app-header h1 { margin: 0; font-size: 1.55rem; }
.app-header p { margin: 5px 0 0; color: var(--muted); }
.header-actions, .quick-actions, .stacked-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.stacked-actions { flex-direction: column; align-items: stretch; }

.status-bar { padding: 9px 28px; background: #ecfdf3; color: var(--success); border-bottom: 1px solid #abefc6; font-size: 0.9rem; }
.status-bar.error { background: #fef3f2; color: var(--danger); border-color: #fecdca; }
.status-bar.warning { background: #fffaeb; color: var(--warning); border-color: #fedf89; }

.app-shell { display: grid; grid-template-columns: 230px minmax(0, 1fr); min-height: calc(100vh - 114px); }
.sidebar { background: #121a2c; padding: 22px 14px; display: flex; flex-direction: column; gap: 8px; }
.nav-item { border: 0; background: transparent; color: #cbd5e1; text-align: left; padding: 12px 14px; border-radius: 9px; }
.nav-item:hover, .nav-item.active { color: white; background: rgba(255,255,255,.11); }
.content { padding: 28px; min-width: 0; }
.view { display: none; }
.view.active { display: block; }
.section-heading { display: flex; align-items: center; justify-content: space-between; gap: 18px; margin-bottom: 18px; }
.section-heading h2 { margin: 0; }
.section-heading p { margin: 5px 0 0; color: var(--muted); }

.card { background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: 20px; box-shadow: var(--shadow); }
.hero-card { display: flex; justify-content: space-between; align-items: center; margin-bottom: 18px; }
.hero-card h3 { font-size: 1.35rem; margin: 5px 0; }
.hero-card p { margin: 0; color: var(--muted); }
.eyebrow { text-transform: uppercase; letter-spacing: .08em; font-size: .72rem; color: var(--primary); font-weight: 700; }
.badge { background: var(--surface-soft); color: var(--primary); padding: 8px 12px; border-radius: 999px; font-weight: 700; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 18px; }
.stat-card { background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: 20px; box-shadow: var(--shadow); }
.stat-card strong { display: block; font-size: 2rem; }
.stat-card span { color: var(--muted); }

.button { border: 1px solid transparent; border-radius: 9px; padding: 10px 14px; font-weight: 650; background: #e8edf7; color: var(--text); }
.button:hover { transform: translateY(-1px); }
.button.primary { background: var(--primary); color: white; }
.button.primary:hover { background: var(--primary-dark); }
.button.secondary { background: white; border-color: var(--border); }
.button.danger { background: #fff1f0; color: var(--danger); border-color: #fecdca; }
.button.small { padding: 6px 9px; font-size: .84rem; }

.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 16px; }
.form-grid.compact { margin-bottom: 24px; }
.full-width { grid-column: 1 / -1; }
label { display: flex; flex-direction: column; gap: 7px; font-weight: 650; font-size: .92rem; }
input, textarea, select { width: 100%; padding: 10px 11px; border: 1px solid var(--border); border-radius: 8px; background: white; color: var(--text); }
input:focus, textarea:focus, select:focus { outline: 3px solid rgba(47,91,234,.12); border-color: var(--primary); }
.checkbox-label { flex-direction: row; align-items: center; align-self: end; }
.checkbox-label input { width: auto; }

.table-card { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 12px; border-bottom: 1px solid var(--border); text-align: left; vertical-align: middle; }
th { font-size: .82rem; text-transform: uppercase; color: var(--muted); letter-spacing: .04em; }
.actions { display: flex; gap: 6px; flex-wrap: wrap; }

.editor-layout { display: grid; grid-template-columns: minmax(280px, .8fr) minmax(420px, 1.5fr); gap: 18px; }
.list-panel, .detail-panel { min-height: 620px; }
.panel-toolbar { margin-bottom: 14px; }
.question-list { display: flex; flex-direction: column; gap: 9px; max-height: 540px; overflow: auto; }
.question-item { border: 1px solid var(--border); border-radius: 10px; padding: 12px; background: white; cursor: pointer; }
.question-item:hover, .question-item.active { border-color: var(--primary); background: var(--surface-soft); }
.question-item strong { display: block; margin-bottom: 5px; }
.question-item span { color: var(--muted); font-size: .85rem; }
.empty-state { text-align: center; color: var(--muted); padding: 100px 20px; }
.hidden { display: none !important; }
.detail-header, .subsection-header { display: flex; justify-content: space-between; align-items: center; gap: 14px; }
.subsection-header { border-top: 1px solid var(--border); padding-top: 20px; margin-top: 8px; }
.subsection-header h3, .subsection-header p { margin: 0; }
.subsection-header p { color: var(--muted); font-size: .88rem; }
.step-list { display: flex; flex-direction: column; gap: 10px; margin-top: 14px; }
.step-item { display: grid; grid-template-columns: 44px 1fr auto; gap: 12px; align-items: center; padding: 12px; border: 1px solid var(--border); border-radius: 10px; }
.step-order { width: 36px; height: 36px; display: grid; place-items: center; border-radius: 50%; background: var(--surface-soft); color: var(--primary); font-weight: 700; }
.step-item p { margin: 0; }
.step-item small { color: var(--muted); }

.two-column-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 18px; }
.validation-results { display: flex; flex-direction: column; gap: 10px; }
.validation-item { background: white; border: 1px solid var(--border); border-left: 5px solid var(--success); border-radius: 10px; padding: 14px 16px; }
.validation-item.error { border-left-color: var(--danger); }
.validation-item.warning { border-left-color: var(--warning); }
.validation-item strong { display: block; margin-bottom: 4px; }
.validation-item p { margin: 0; color: var(--muted); }

::backdrop { background: rgba(16,24,40,.55); }
dialog { border: 0; border-radius: 14px; padding: 0; width: min(520px, calc(100vw - 32px)); box-shadow: var(--shadow); }
.dialog-form { padding: 22px; display: flex; flex-direction: column; gap: 15px; }
.dialog-form h3 { margin: 0 0 4px; }
.dialog-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 6px; }

@media (max-width: 950px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar { flex-direction: row; overflow-x: auto; padding: 10px; }
  .nav-item { white-space: nowrap; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .editor-layout, .two-column-grid { grid-template-columns: 1fr; }
  .list-panel, .detail-panel { min-height: auto; }
}

@media (max-width: 680px) {
  .app-header { position: static; flex-direction: column; align-items: stretch; padding: 18px; }
  .content { padding: 18px; }
  .stats-grid, .form-grid { grid-template-columns: 1fr; }
  .full-width { grid-column: auto; }
  .hero-card, .section-heading { align-items: flex-start; flex-direction: column; }
}

.muted { color: var(--muted, #667085); }
.connection-status { margin-top: 1rem; padding: .75rem; border-radius: .5rem; background: #f2f4f7; }
.connection-status.success { background: #ecfdf3; }
.connection-status.error, .error-text { color: #b42318; background: #fef3f2; }
.cloud-library-list { display: grid; gap: .75rem; }
.cloud-library-item { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1rem; border: 1px solid #e4e7ec; border-radius: .75rem; }
.cloud-library-item div:first-child { display: grid; gap: .25rem; }
.cloud-library-item span, .cloud-library-item small { color: #667085; }
@media (max-width: 720px) { .cloud-library-item { align-items: flex-start; flex-direction: column; } }

/* Écran d'authentification affiché avant l'application */
.auth-gate {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 28px;
  background:
    radial-gradient(circle at top left, rgba(47, 91, 234, .16), transparent 36%),
    var(--bg);
}
.auth-panel { width: min(520px, 100%); }
.auth-brand { display: flex; align-items: center; gap: 14px; margin-bottom: 20px; }
.auth-brand h1 { margin: 0; font-size: 1.7rem; }
.auth-brand p { margin: 4px 0 0; color: var(--muted); }
.auth-logo {
  width: 52px; height: 52px; display: grid; place-items: center;
  border-radius: 14px; background: var(--primary); color: white;
  font-weight: 800; letter-spacing: .04em; box-shadow: var(--shadow);
}
.auth-card { padding: 28px; }
.auth-card h2 { margin-top: 0; }
.auth-form { display: grid; gap: 14px; margin-top: 20px; }
.auth-main-button { margin-top: 4px; }
.auth-config { margin-top: 20px; border-top: 1px solid var(--border); padding-top: 16px; }
.auth-config summary { cursor: pointer; font-weight: 700; }
.auth-config-form { margin-top: 16px; }