/* Billio landing — charte graphique */
:root {
  --billio-bg: #f4f4f5;
  --billio-mist: #f4f4f5;
  --billio-card: #ffffff;
  --billio-text: #18181b;
  --billio-text-muted: #52525b;
  --billio-primary: #6d28d9;
  --billio-primary-hover: #4c1d95;
  --billio-cta: #eab308;
  --billio-cta-hover: #d97706;
  --billio-cta-text: #a16207;
  --billio-success: #22c55e;
  --billio-error: #b91c1c;
  --billio-info: #3b82f6;
  --billio-gradient: linear-gradient(135deg, #6d28d9 0%, #8b5cf6 100%);
  --billio-gradient-premium: linear-gradient(135deg, #4c1d95 0%, #6d28d9 50%, #a78bfa 100%);
  --billio-gradient-accent: linear-gradient(135deg, #6d28d9 0%, #8b5cf6 70%, #facc15 100%);
  --billio-border: #e4e4e7;
  --billio-border-strong: #d4d4d8;
  --billio-primary-soft: rgba(109, 40, 217, 0.1);
  --billio-primary-soft-border: rgba(109, 40, 217, 0.2);
  --billio-cta-soft: rgba(234, 179, 8, 0.12);

  /* Alias compatibilité */
  --billio-ink: var(--billio-text);
  --billio-muted: var(--billio-text-muted);
  --billio-amber: var(--billio-cta);
  --billio-amber-deep: var(--billio-cta-hover);
  --billio-pale-gold: var(--billio-primary-soft);
  --billio-bronze: var(--billio-primary);
  --billio-parchment: #ede9fe;
  --billio-neutral: var(--billio-bg);
  --billio-dark-alt: var(--billio-primary-hover);

  --font-logo: 'Manrope', 'Inter', system-ui, sans-serif;
  --font-titles: 'Manrope', 'Inter', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --font-amounts: 'Inter', system-ui, sans-serif;
}

html { font-size: 110%; }

.landing-page {
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.7;
  font-weight: 400;
  color: var(--billio-text);
  background-color: var(--billio-bg);
  -webkit-font-smoothing: antialiased;
}

.landing-display {
  font-family: var(--font-titles);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--billio-text);
}

.hero-gradient-text {
  color: var(--billio-primary);
}

.landing-logo {
  font-family: var(--font-logo);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--billio-text);
}

.landing-label {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--billio-primary);
}

.landing-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--billio-border);
  transition: box-shadow 0.2s ease;
}

.landing-header.is-scrolled {
  box-shadow: 0 4px 24px rgba(109, 40, 217, 0.08);
}

.landing-nav-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--billio-text-muted);
  transition: color 0.15s ease;
}

.landing-nav-link:hover {
  color: var(--billio-text);
}

.landing-btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.35rem;
  font-family: var(--font-titles);
  font-size: 15px;
  font-weight: 700;
  color: #ffffff;
  background: var(--billio-primary);
  border: 1px solid var(--billio-primary);
  border-radius: 0.25rem;
  transition: background-color 0.15s ease, border-color 0.15s ease;
}

.landing-btn-primary:hover {
  background: var(--billio-primary-hover);
  border-color: var(--billio-primary-hover);
}

.landing-btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.35rem;
  font-family: var(--font-titles);
  font-size: 15px;
  font-weight: 700;
  color: var(--billio-text);
  background: var(--billio-card);
  border: 2px solid var(--billio-text);
  border-radius: 0.25rem;
  transition: background-color 0.15s ease, border-color 0.15s ease;
}

.landing-btn-secondary:hover {
  background: var(--billio-mist);
}

.landing-btn-ink {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.35rem;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  background: var(--billio-primary);
  border: 1px solid var(--billio-primary);
  border-radius: 0.625rem;
  transition: background-color 0.15s ease;
}

.landing-btn-ink:hover {
  background: var(--billio-primary-hover);
  border-color: var(--billio-primary-hover);
}

.landing-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.85rem;
  font-size: 13px;
  font-weight: 500;
  color: var(--billio-primary);
  background: var(--billio-primary-soft);
  border: 1px solid var(--billio-primary-soft-border);
  border-radius: 9999px;
}

.hero-badge-avatars {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.4rem 1rem 0.4rem 0.5rem;
  margin-bottom: 1.75rem;
  font-size: 13px;
  font-weight: 600;
  color: var(--billio-text-muted);
  background: var(--billio-card);
  border: 1px solid var(--billio-border);
  border-radius: 9999px;
  box-shadow: 0 1px 2px rgba(17, 24, 39, 0.04);
}

.hero-avatar-stack {
  display: flex;
}

.hero-avatar {
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.6rem;
  font-weight: 800;
  color: #fff;
  border: 2px solid var(--billio-card);
  margin-left: -0.5rem;
}

.hero-avatar:first-child { margin-left: 0; }

.hero-stat-pills {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.65rem;
  margin-bottom: 2.25rem;
}

.hero-stat-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.85rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--billio-text);
  background: #ffffff;
  border: 1px solid var(--billio-primary-soft-border);
  border-radius: 9999px;
}

.hero-stat-pill i { color: var(--billio-primary); }

.landing-btn-primary--lg {
  padding: 1rem 1.75rem;
  font-size: 16px;
  border-radius: 0.25rem;
}

.landing-btn-primary-label {
  position: relative;
  z-index: 1;
}

.hero-cta-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 50%;
  background: rgba(17, 24, 39, 0.12);
  position: relative;
  z-index: 1;
}

.landing-section {
  padding: 5rem 1.5rem;
}

.landing-section-alt {
  background: var(--billio-bg);
}

.landing-section-dark {
  background: var(--billio-gradient-premium);
  color: #ffffff;
}

.landing-card {
  background: var(--billio-card);
  border: 1px solid var(--billio-border);
  border-radius: 1rem;
  padding: 1.5rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.landing-card:hover {
  border-color: #d1d5db;
  box-shadow: 0 12px 40px rgba(109, 40, 217, 0.08);
}

.landing-card-featured {
  background: var(--billio-gradient-premium);
  border-color: transparent;
  color: #ffffff;
}

.landing-icon-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 0.625rem;
  background: var(--billio-primary-soft);
  color: var(--billio-primary);
  border: 1px solid var(--billio-primary-soft-border);
}

.landing-amount {
  font-family: var(--font-amounts);
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--billio-text);
  font-variant-numeric: tabular-nums;
}

.landing-stat-value {
  font-family: var(--font-amounts);
  font-size: 2.25rem;
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--billio-text);
  font-variant-numeric: tabular-nums;
}

.landing-step-num {
  width: 2.5rem;
  height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  color: #ffffff;
  background: var(--billio-gradient);
  border-radius: 9999px;
}

.landing-invoice-mock {
  background: var(--billio-card);
  border: 1px solid var(--billio-border);
  border-radius: 1rem;
  box-shadow: 0 24px 64px rgba(109, 40, 217, 0.1);
  overflow: hidden;
}

.landing-invoice-mock-header {
  background: var(--billio-gradient);
  color: #ffffff;
  padding: 1.25rem 1.5rem;
}

.landing-nav-tile {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  padding: 1.5rem;
  background: var(--billio-card);
  border: 1px solid var(--billio-border);
  border-radius: 1rem;
  text-align: center;
  transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.landing-nav-tile:hover {
  border-color: var(--billio-primary);
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(109, 40, 217, 0.1);
}

.landing-faq-item {
  background: var(--billio-card);
  border: 1px solid var(--billio-border);
  border-radius: 0.75rem;
  padding: 1.25rem 1.5rem;
}

.landing-footer {
  background: var(--billio-gradient-premium);
  color: rgba(255, 255, 255, 0.8);
  padding: 3.5rem 1.5rem 2rem;
}

.landing-footer a {
  color: rgba(255, 255, 255, 0.7);
  transition: color 0.15s ease;
}

.landing-footer a:hover {
  color: #ffffff;
}

.landing-card-featured:hover {
  border-color: transparent;
  box-shadow: 0 16px 48px rgba(76, 29, 149, 0.35);
}

.landing-fade-in {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.landing-fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.landing-accent-line {
  width: 3rem;
  height: 3px;
  background: var(--billio-gradient);
  border-radius: 2px;
}

.landing-check {
  color: var(--billio-success);
}

.landing-cross {
  color: var(--billio-error);
}

/* Hero checklist */
.landing-hero-checklist {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.65rem;
  margin-bottom: 2rem;
}

@media (min-width: 640px) {
  .landing-hero-checklist {
    grid-template-columns: 1fr 1fr;
  }
}

.landing-hero-checklist li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: var(--billio-text);
}

.landing-hero-checklist .landing-check {
  flex-shrink: 0;
  font-weight: 700;
}

/* Trust bar — audiences */
.landing-trust-bar {
  padding: 2.5rem 1.5rem;
  background: var(--billio-card);
  border-top: 1px solid var(--billio-border);
  border-bottom: 1px solid var(--billio-border);
}

.landing-audience-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
}

@media (min-width: 640px) {
  .landing-audience-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .landing-audience-grid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }
}

.landing-audience-pill {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 0.75rem;
  border-radius: 0.85rem;
  border: 1px solid var(--billio-border);
  background: var(--billio-bg);
  text-align: center;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.landing-audience-pill:hover {
  border-color: var(--billio-primary-soft-border);
  box-shadow: 0 8px 24px rgba(109, 40, 217, 0.08);
  transform: translateY(-2px);
}

.landing-audience-icon {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 0.625rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--billio-primary-soft);
  color: var(--billio-primary);
  font-size: 1.1rem;
}

.landing-audience-pill span {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--billio-text);
}

/* Value proposition — 3 blocs */
.landing-value-card {
  padding: 2rem;
  border-radius: 1.25rem;
  border: 1px solid var(--billio-border);
  background: var(--billio-card);
  height: 100%;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.landing-value-card:hover {
  border-color: var(--billio-primary-soft-border);
  box-shadow: 0 16px 48px rgba(109, 40, 217, 0.1);
}

.landing-value-card h3 {
  font-family: var(--font-titles);
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
  color: var(--billio-text);
}

.landing-value-card p {
  font-size: 0.95rem;
  color: var(--billio-text-muted);
  line-height: 1.65;
}

/* Product pipeline */
.landing-product-screen {
  background: var(--billio-card);
  border: 1px solid var(--billio-border);
  border-radius: 1.25rem;
  padding: 2rem 1.5rem;
  box-shadow: 0 24px 64px rgba(109, 40, 217, 0.08);
}

.landing-product-flow {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.5rem;
}

@media (min-width: 768px) {
  .landing-product-flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .landing-product-flow {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }
}

.landing-flow-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.35rem;
  padding: 0.85rem 0.5rem;
  border-radius: 0.75rem;
  background: var(--billio-bg);
  border: 1px solid var(--billio-border);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--billio-text);
  min-height: 4.5rem;
  justify-content: center;
}

.landing-flow-item.is-soon {
  opacity: 0.72;
  border-style: dashed;
  color: var(--billio-text-muted);
}

.landing-flow-item .soon-tag {
  font-size: 0.62rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--billio-primary);
  background: var(--billio-primary-soft);
  padding: 0.1rem 0.35rem;
  border-radius: 9999px;
}

/* Workflow timeline */
.landing-workflow {
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: 32rem;
  margin: 0 auto;
}

.landing-workflow-step {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.landing-workflow-marker {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex-shrink: 0;
}

.landing-workflow-dot {
  width: 2rem;
  height: 2rem;
  border-radius: 9999px;
  background: var(--billio-gradient);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.landing-workflow-line {
  width: 2px;
  flex: 1;
  min-height: 1.5rem;
  background: linear-gradient(180deg, #8b5cf6, rgba(139, 92, 246, 0.15));
  margin: 0.25rem 0;
}

.landing-workflow-step:last-child .landing-workflow-line {
  display: none;
}

.landing-workflow-content {
  padding-bottom: 1.5rem;
}

.landing-workflow-content h4 {
  font-family: var(--font-titles);
  font-weight: 700;
  font-size: 1rem;
  color: var(--billio-text);
  margin-bottom: 0.15rem;
}

.landing-workflow-content p {
  font-size: 0.85rem;
  color: var(--billio-text-muted);
}

/* AI section */
.landing-ai-card {
  background: var(--billio-gradient-premium);
  border-radius: 1.25rem;
  padding: 2.5rem 2rem;
  color: #ffffff;
  position: relative;
  overflow: hidden;
}

.landing-ai-card::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -10%;
  width: 20rem;
  height: 20rem;
  border-radius: 9999px;
  background: rgba(250, 204, 21, 0.12);
  pointer-events: none;
}

.landing-ai-soon {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.75rem;
  border-radius: 9999px;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.25);
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.landing-ai-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.65rem;
}

@media (min-width: 640px) {
  .landing-ai-list {
    grid-template-columns: 1fr 1fr;
  }
}

.landing-ai-list li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.9);
}

/* Premium features grid */
.landing-feature-premium {
  padding: 1.5rem;
  border-radius: 1rem;
  border: 1px solid var(--billio-border);
  background: var(--billio-card);
  height: 100%;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.landing-feature-premium:hover {
  border-color: var(--billio-primary-soft-border);
  box-shadow: 0 12px 32px rgba(109, 40, 217, 0.08);
  transform: translateY(-2px);
}

.landing-feature-premium .emoji {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
  display: block;
}

.landing-feature-premium h3 {
  font-family: var(--font-titles);
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 0.4rem;
  color: var(--billio-text);
}

.landing-feature-premium p {
  font-size: 0.85rem;
  color: var(--billio-text-muted);
  line-height: 1.55;
}

/* Vision */
.landing-vision {
  background: linear-gradient(180deg, var(--billio-bg) 0%, rgba(109, 40, 217, 0.06) 100%);
  border: 1px solid var(--billio-primary-soft-border);
  border-radius: 1.5rem;
  padding: 3rem 2rem;
  text-align: center;
}

/* Roadmap */
.landing-roadmap {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .landing-roadmap {
    grid-template-columns: 1fr 1fr;
  }
}

.landing-roadmap-col {
  padding: 1.75rem;
  border-radius: 1rem;
  border: 1px solid var(--billio-border);
  background: var(--billio-card);
}

.landing-roadmap-col h3 {
  font-family: var(--font-titles);
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: 1rem;
  color: var(--billio-text);
}

.landing-roadmap-col.is-today {
  border-color: var(--billio-primary-soft-border);
  background: linear-gradient(180deg, #fff 0%, rgba(109, 40, 217, 0.04) 100%);
}

.landing-roadmap-col.is-soon {
  border-style: dashed;
}

.landing-roadmap-col ul {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.landing-roadmap-col li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: var(--billio-text-muted);
}

.landing-roadmap-col.is-today li {
  color: var(--billio-text);
}

/* Pricing — 3 cols */
.landing-pricing-card {
  padding: 2rem;
  border-radius: 1.25rem;
  border: 1px solid var(--billio-border);
  background: var(--billio-card);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.landing-pricing-card.is-featured {
  background: var(--billio-gradient-premium);
  border-color: transparent;
  color: #ffffff;
  box-shadow: 0 20px 48px rgba(76, 29, 149, 0.3);
}

.landing-pricing-card.is-disabled {
  opacity: 0.85;
  border-style: dashed;
}

.landing-pricing-soon {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.2rem 0.5rem;
  border-radius: 9999px;
  background: var(--billio-primary-soft);
  color: var(--billio-primary);
  margin-bottom: 0.5rem;
}

.landing-pricing-card.is-featured .landing-pricing-soon,
.landing-pricing-card.is-featured .landing-label {
  color: rgba(255, 255, 255, 0.75);
}

/* Audience personas */
.landing-persona-card {
  padding: 1.5rem;
  border-radius: 1rem;
  border: 1px solid var(--billio-border);
  background: var(--billio-card);
  height: 100%;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.landing-persona-card:hover {
  border-color: var(--billio-primary);
  box-shadow: 0 12px 32px rgba(109, 40, 217, 0.08);
}

.landing-persona-card h3 {
  font-family: var(--font-titles);
  font-weight: 700;
  font-size: 1.05rem;
  margin-bottom: 0.5rem;
  color: var(--billio-text);
}

.landing-persona-card p {
  font-size: 0.875rem;
  color: var(--billio-text-muted);
}

@media (max-width: 768px) {
  .landing-section {
    padding: 3.5rem 1.25rem;
  }

  .landing-display-hero {
    font-size: 2.75rem;
    line-height: 1.1;
  }
}

@media (min-width: 768px) {
  .landing-display-hero {
    font-size: 4.25rem;
    line-height: 1.05;
  }
}