/* ============================================================
   LIVRE BLANC — Live & Video Commerce
   Design Dark Premium — fond #12001F, gradient violet/pink
   ============================================================ */

:root {
  --lb-max: 860px;
  --lb-pad: clamp(64px, 9vw, 120px);
  --lb-gradient: linear-gradient(135deg, #8B4DFF 0%, #F000B9 60%, #D6BFFF 100%);
  --lb-dark: #12001F;
  --lb-dark2: #1A0030;
  --lb-glass: rgba(255,255,255,0.04);
  --lb-glass-border: rgba(255,255,255,0.08);
  --lb-muted: rgba(255,255,255,0.55);
  --lb-radius: 16px;
}

body { overflow-x: hidden; }

/* ========================
   GATE — FORMULAIRE EMAIL
   ======================== */
.lb-gate {
  min-height: calc(100vh - 72px);
  display: flex;
  align-items: center;
  padding: 80px 24px;
  background: var(--lb-dark);
  position: relative;
  overflow: hidden;
}

.lb-gate::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 60% 40%, rgba(137,0,255,0.18) 0%, transparent 70%),
    radial-gradient(ellipse 50% 50% at 20% 80%, rgba(240,0,185,0.10) 0%, transparent 60%);
  pointer-events: none;
}

.lb-gate__inner {
  position: relative;
  z-index: 1;
  max-width: 1080px;
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 384px;
  gap: 80px;
  align-items: center;
}

.lb-gate__content {
  max-width: 520px;
}

.lb-gate__available {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 22px;
  border-radius: 14px;
  border: 1px solid rgba(192,132,252,0.35);
  background: rgba(139,77,255,0.12);
  color: #E2C8FF;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 28px;
  width: fit-content;
}

.lb-gate__available svg { color: #C084FC; flex-shrink: 0; }
.lb-gate__available strong { color: #fff; font-weight: 800; }

.lb-gate__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 100px;
  border: 1px solid rgba(139,77,255,0.4);
  background: rgba(139,77,255,0.1);
  color: #C084FC;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 24px;
}

.lb-gate__title {
  font-size: clamp(24px, 3vw, 42px);
  font-weight: 800;
  line-height: 1.15;
  color: #fff;
  margin-bottom: 20px;
}

.lb-gate__title span {
  background: var(--lb-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.lb-gate__desc {
  font-size: 16px;
  line-height: 1.75;
  color: var(--lb-muted);
  margin-bottom: 36px;
}

.lb-gate__pills {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.lb-gate__pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 500;
  color: rgba(255,255,255,0.7);
}

.lb-gate__pill svg {
  width: 15px;
  height: 15px;
  flex-shrink: 0;
  color: #C084FC;
}

/* Form card — Light mode */
.lb-gate__form-wrap {
  background: #fff;
  border: 1px solid rgba(139,77,255,0.12);
  border-radius: 20px;
  padding: 28px 32px;
  box-shadow: 0 24px 80px rgba(0,0,0,0.35), 0 4px 20px rgba(139,77,255,0.08);
  position: relative;
  overflow: hidden;
}

.lb-gate__form-wrap::before { display: none; }

.lb-gate__form-title {
  font-size: 17px;
  font-weight: 700;
  color: #12001F;
  margin-bottom: 4px;
}

.lb-gate__form-sub {
  font-size: 13px;
  color: #6B5E8A;
  margin-bottom: 20px;
}

.lb-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.lb-form__field {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.lb-form__label {
  font-size: 12px;
  font-weight: 600;
  color: #2A1B50;
  letter-spacing: 0.02em;
}

.lb-form__input {
  padding: 10px 14px;
  border-radius: 8px;
  border: 1.5px solid #E8E0F5;
  background: #F7F4FF;
  color: #12001F;
  font-size: 14px;
  font-family: var(--font-primary, inherit);
  transition: border-color 200ms, box-shadow 200ms;
  outline: none;
}

.lb-form__input::placeholder { color: #A897C5; }
.lb-form__input:focus { border-color: #8B4DFF; box-shadow: 0 0 0 3px rgba(139,77,255,0.1); }

.lb-form__btn {
  margin-top: 8px;
  padding: 14px 24px;
  border-radius: 10px;
  border: none;
  background: var(--lb-gradient);
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  font-family: var(--font-primary, inherit);
  cursor: pointer;
  transition: opacity 200ms, transform 200ms;
  letter-spacing: 0.01em;
}

.lb-form__btn:hover { opacity: 0.9; transform: translateY(-1px); }

.lb-form__privacy {
  font-size: 11px;
  color: #9B8AB8;
  text-align: center;
  line-height: 1.5;
}

.lb-form__privacy a { color: #8B4DFF; text-decoration: underline; }

.lb-form__error {
  font-size: 12px;
  color: #E00090;
  display: none;
}

.lb-form__error.visible { display: block; }

/* ========================
   CONTENU DU LIVRE BLANC
   ======================== */
.lb-content {
  display: none;
  opacity: 0;
  transition: opacity 600ms ease;
}

.lb-content.visible {
  display: block;
  opacity: 1;
}

/* Hero */
.lb-hero {
  background: var(--lb-dark);
  padding: 80px 24px 72px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.lb-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 70% 70% at 50% 50%, rgba(137,0,255,0.15) 0%, transparent 70%);
  pointer-events: none;
}

.lb-hero__inner {
  position: relative;
  z-index: 1;
  max-width: 760px;
  margin: 0 auto;
}

.lb-hero__tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #C084FC;
  margin-bottom: 20px;
}

.lb-hero__title {
  font-size: clamp(32px, 5vw, 54px);
  font-weight: 800;
  color: #fff;
  line-height: 1.12;
  margin-bottom: 20px;
}

.lb-hero__title span {
  background: var(--lb-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.lb-hero__sub {
  font-size: 17px;
  color: rgba(255,255,255,0.55);
  line-height: 1.7;
  margin-bottom: 32px;
}

.lb-hero__meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
}

.lb-hero__meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: rgba(255,255,255,0.4);
}

.lb-hero__meta-item svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
  color: rgba(139,77,255,0.7);
}

/* TOC sticky */
.lb-toc-bar {
  position: sticky;
  top: 72px;
  z-index: 10;
  background: rgba(18,0,31,0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  overflow-x: auto;
  scrollbar-width: none;
}

.lb-toc-bar::-webkit-scrollbar { display: none; }

.lb-toc-bar__inner {
  display: flex;
  align-items: center;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

.lb-toc-bar__link {
  flex-shrink: 0;
  padding: 14px 18px;
  font-size: 13px;
  font-weight: 600;
  color: rgba(255,255,255,0.4);
  text-decoration: none;
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  transition: color 200ms, border-color 200ms;
}

.lb-toc-bar__link:hover,
.lb-toc-bar__link.active {
  color: #C084FC;
  border-bottom-color: #8900FF;
}

/* Sections */
.lb-section {
  padding: var(--lb-pad) 24px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.lb-section:nth-child(odd)  { background: var(--lb-dark); }
.lb-section:nth-child(even) { background: var(--lb-dark2); }

.lb-section__inner {
  max-width: var(--lb-max);
  margin: 0 auto;
}

.lb-section__num {
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  background: var(--lb-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 12px;
}

.lb-section__title {
  font-size: clamp(22px, 3vw, 34px);
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 20px;
}

.lb-section__intro {
  font-size: 18px;
  font-weight: 600;
  color: rgba(255,255,255,0.8);
  line-height: 1.6;
  margin-bottom: 24px;
  padding-left: 20px;
  border-left: 3px solid #C084FC;
}

.lb-section p {
  font-size: 16px;
  line-height: 1.85;
  color: var(--lb-muted);
  margin-bottom: 20px;
}

.lb-section p strong { color: #fff; font-weight: 700; }

/* Stats */
.lb-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin: 36px 0;
}

.lb-stat {
  background: var(--lb-glass);
  border: 1px solid var(--lb-glass-border);
  border-radius: var(--lb-radius);
  padding: 24px 20px;
  text-align: center;
  transition: border-color 300ms, transform 300ms;
}

.lb-stat:hover { border-color: rgba(139,77,255,0.3); transform: translateY(-2px); }

.lb-stat__value {
  font-size: 36px;
  font-weight: 800;
  background: var(--lb-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 8px;
}

.lb-stat__label {
  font-size: 13px;
  color: rgba(255,255,255,0.5);
  line-height: 1.4;
}

.lb-stat__source {
  font-size: 10px;
  color: rgba(255,255,255,0.25);
  margin-top: 6px;
}

/* Insight */
.lb-insight {
  background: linear-gradient(135deg, rgba(139,77,255,0.08), rgba(240,0,185,0.05));
  border: 1px solid rgba(139,77,255,0.2);
  border-radius: var(--lb-radius);
  padding: 24px 28px;
  margin: 28px 0;
}

.lb-insight__label {
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #8900FF;
  margin-bottom: 8px;
}

.lb-insight__text {
  font-size: 16px;
  font-weight: 600;
  color: rgba(255,255,255,0.85);
  line-height: 1.6;
  margin: 0;
}

/* Table */
.lb-table {
  width: 100%;
  border-collapse: collapse;
  margin: 28px 0;
  font-size: 14px;
}

.lb-table th {
  padding: 12px 16px;
  text-align: left;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.4);
  border-bottom: 2px solid rgba(255,255,255,0.08);
}

.lb-table td {
  padding: 14px 16px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  color: rgba(255,255,255,0.65);
}

.lb-table tr:hover td { background: rgba(255,255,255,0.02); }
.lb-table td:first-child { font-weight: 600; color: #fff; }

.lb-table .tag { display: inline-block; padding: 3px 10px; border-radius: 100px; font-size: 11px; font-weight: 700; }
.lb-table .tag--high { background: rgba(16,185,129,0.15); color: #34D399; }
.lb-table .tag--mid  { background: rgba(245,158,11,0.15); color: #FCD34D; }

/* Secteurs */
.lb-sectors {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin: 28px 0;
}

.lb-sector {
  background: var(--lb-glass);
  border: 1px solid var(--lb-glass-border);
  border-radius: var(--lb-radius);
  padding: 24px;
  transition: border-color 200ms;
}

.lb-sector:hover { border-color: rgba(139,77,255,0.3); }
.lb-sector__icon { font-size: 28px; margin-bottom: 12px; }
.lb-sector__name { font-size: 16px; font-weight: 700; color: #fff; margin-bottom: 6px; }
.lb-sector__brands { font-size: 12px; color: #C084FC; font-weight: 600; margin-bottom: 10px; }
.lb-sector__text { font-size: 13px; color: var(--lb-muted); line-height: 1.6; margin: 0; }

/* KPIs */
.lb-kpis {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 28px 0;
}

.lb-kpi {
  background: var(--lb-glass);
  border: 1px solid var(--lb-glass-border);
  border-radius: var(--lb-radius);
  padding: 24px;
}

.lb-kpi__metric {
  font-size: 32px;
  font-weight: 800;
  background: var(--lb-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 4px;
}

.lb-kpi__name { font-size: 14px; font-weight: 700; color: #fff; margin-bottom: 6px; }
.lb-kpi__desc { font-size: 12px; color: rgba(255,255,255,0.45); line-height: 1.5; margin: 0; }

/* Timeline */
.lb-timeline {
  display: flex;
  flex-direction: column;
  margin: 28px 0;
  position: relative;
}

.lb-timeline::before {
  content: '';
  position: absolute;
  left: 20px; top: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, #8B4DFF, #F000B9, #D6BFFF);
}

.lb-timeline__item { display: flex; gap: 20px; padding-bottom: 32px; }

.lb-timeline__dot {
  width: 42px; height: 42px; border-radius: 50%;
  background: var(--lb-gradient);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; flex-shrink: 0; position: relative; z-index: 1;
}

.lb-timeline__year { font-size: 11px; font-weight: 800; letter-spacing: 0.1em; text-transform: uppercase; color: #C084FC; margin-bottom: 4px; }
.lb-timeline__title { font-size: 16px; font-weight: 700; color: #fff; margin-bottom: 6px; }
.lb-timeline__text { font-size: 14px; color: var(--lb-muted); line-height: 1.6; margin: 0; }

/* CTA */
.lb-cta {
  background: var(--lb-dark);
  padding: var(--lb-pad) 24px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.lb-cta::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 60% 80% at 50% 50%, rgba(137,0,255,0.2) 0%, transparent 70%);
  pointer-events: none;
}

.lb-cta__inner { position: relative; z-index: 1; max-width: 640px; margin: 0 auto; }

.lb-cta__title { font-size: clamp(24px, 3vw, 40px); font-weight: 800; color: #fff; line-height: 1.2; margin-bottom: 16px; }
.lb-cta__title span { background: var(--lb-gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.lb-cta__sub { font-size: 16px; color: rgba(255,255,255,0.55); margin-bottom: 32px; line-height: 1.65; }

.lb-cta__btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 16px 32px; border-radius: 12px;
  background: var(--lb-gradient); color: #fff;
  font-size: 16px; font-weight: 700; text-decoration: none;
  transition: opacity 200ms, transform 200ms;
}

.lb-cta__btn:hover { opacity: 0.9; transform: translateY(-2px); }
.lb-cta__secondary { display: block; margin-top: 16px; font-size: 13px; color: rgba(255,255,255,0.35); }

/* Reveal */
.lb-reveal { opacity: 0; transform: translateY(24px); transition: opacity 600ms ease, transform 600ms ease; }
.lb-reveal.visible { opacity: 1; transform: none; }

/* Responsive */
@media (max-width: 900px) {
  .lb-gate__inner { grid-template-columns: 1fr; gap: 48px; }
  .lb-kpis { grid-template-columns: 1fr; }
  .lb-toc-bar__link { padding: 12px 10px; font-size: 12px; }
}