/* =============================================
   PAGE ADHÉSION — Design éditorial Institut Rousseau
   ============================================= */

/* ---------- HERO ---------- */
.adh-hero {
  background: linear-gradient(170deg, #1B2A4A 0%, #0F1D35 100%);
  color: #fff;
  padding: calc(var(--nav-height, 80px) + 5.5rem) 1.5rem 6rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.adh-hero::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(45, 91, 215,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(45, 91, 215,.05) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, black 20%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, black 20%, transparent 70%);
  pointer-events: none;
}
.adh-hero::after {
  content: '';
  position: absolute; top: 35%; left: 50%;
  transform: translate(-50%,-50%);
  width: 500px; height: 350px;
  background: radial-gradient(ellipse, rgba(45, 91, 215,.18) 0%, transparent 70%);
  pointer-events: none;
}
.adh-hero__inner {
  position: relative; z-index: 1;
  max-width: 620px; margin: 0 auto;
}
.adh-hero__label {
  font-family: var(--font-display);
  font-size: .72rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: .2em;
  color: var(--color-accent);
  margin-bottom: 1.25rem;
}
.adh-hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(2.2rem, 4.5vw, 3.2rem);
  font-weight: 700; line-height: 1.15;
  letter-spacing: -.015em;
  margin: 0 0 1.25rem;
  color: #f8fafc;
  text-shadow: 0 2px 24px rgba(0,0,0,.5), 0 0 60px rgba(45, 91, 215,.15);
}
.adh-hero__sub {
  font-family: var(--font-body);
  font-size: clamp(.95rem, 2vw, 1.1rem);
  line-height: 1.65; opacity: .85;
  max-width: 480px; margin: 0 auto;
  color: #cbd5e1;
}
.adh-hero__counter {
  display: inline-flex; align-items: center; gap: .6rem;
  margin-top: 2rem;
  padding: .6rem 1.5rem;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 50px;
  backdrop-filter: blur(8px);
}
.adh-hero__counter-number {
  font-family: var(--font-heading);
  font-size: 1.5rem; font-weight: 700;
  color: var(--color-accent);
}
.adh-hero__counter-label {
  font-family: var(--font-display);
  font-size: .82rem; color: rgba(255,255,255,.7);
}

/* ---------- Section commune ---------- */
.adh-section {
  padding: 4.5rem 1.5rem;
}
.adh-section--alt {
  background: var(--bg-alt, #F3F4F6);
}
.adh-section__title {
  font-family: var(--font-heading);
  font-size: 1.5rem; font-weight: 700;
  color: var(--ink); text-align: center;
  margin: 0 0 .5rem;
}
.adh-section__sub {
  text-align: center; color: var(--muted);
  font-size: .95rem; margin: 0 0 2.5rem;
}

/* ---------- 3-col "pourquoi" ---------- */
.why-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem; max-width: 880px; margin: 0 auto;
}
.why-card {
  padding: 2rem 1.5rem; text-align: center;
  border-radius: 16px; background: var(--card-bg, #ffffff);
  border: 1px solid var(--border);
  box-shadow: var(--sh-sm);
  transition: transform .2s, box-shadow .2s;
}
.why-card:hover {
  transform: translateY(-3px); box-shadow: var(--sh-md);
}
.why-icon {
  width: 48px; height: 48px; margin: 0 auto .85rem;
  border-radius: 12px; background: var(--ice);
  display: flex; align-items: center; justify-content: center;
}
.why-icon svg { color: var(--color-accent); }
.why-card h3 {
  font-family: var(--font-heading);
  font-size: 1rem; font-weight: 700;
  color: var(--ink); margin: 0 0 .3rem;
}
.why-card p {
  font-size: .85rem; color: var(--muted); line-height: 1.6; margin: 0;
}

/* ---------- TIER CARDS ---------- */
.tier-wrap {
  max-width: 740px; margin: 0 auto;
}
.tier-grid {
  display: grid; grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem; margin-top: 0;
  max-width: 680px; margin-left: auto; margin-right: auto;
}
.tier-card {
  background: var(--card-bg, #ffffff);
  border: 1.5px solid var(--border);
  border-radius: 18px;
  padding: 2.25rem 1.75rem 2rem;
  text-align: center;
  position: relative;
  transition: transform .2s, box-shadow .2s, border-color .2s;
  display: flex; flex-direction: column; align-items: center;
  box-shadow: var(--sh-sm);
}
.tier-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--sh-lg);
}
.tier-card.recommended {
  border-color: var(--navy-deep, #0F1D35);
  border-width: 2px;
  box-shadow: var(--sh-lg);
  transform: scale(1.04);
  z-index: 1;
}
.tier-card.recommended:hover {
  transform: scale(1.04) translateY(-4px);
}
.tier-badge {
  position: absolute; top: -13px; left: 50%; transform: translateX(-50%);
  background: var(--navy-deep, #0F1D35); color: #fff;
  font-family: var(--font-display); font-size: .7rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: .08em;
  padding: .35rem 1rem; border-radius: 50px;
  white-space: nowrap;
}
.tier-icon {
  width: 52px; height: 52px; margin: 0 auto 1rem;
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
}
.tier-icon--base { background: var(--ice); }
.tier-icon--mid { background: rgba(15,29,53,.06); }
.tier-icon--top { background: rgba(45, 91, 215,.1); }
.tier-icon svg { width: 24px; height: 24px; }
.tier-name {
  font-family: var(--font-heading); font-size: 1.15rem; font-weight: 700;
  color: var(--ink); margin-bottom: .5rem;
}
.tier-price {
  font-family: var(--font-heading); font-size: 2.4rem; font-weight: 700;
  color: var(--navy-deep, #0F1D35); line-height: 1;
}
.tier-price span {
  font-size: .85rem; font-weight: 400; color: var(--muted);
  font-family: var(--font-display);
}
.tier-desc {
  margin-top: .75rem; font-size: .85rem; color: var(--muted);
  line-height: 1.55;
}
.tier-features {
  list-style: none; padding: 0; margin: 1.25rem 0 0;
  text-align: left; width: 100%;
}
.tier-features li {
  font-size: .84rem; color: var(--body); line-height: 1.5;
  padding: .4rem 0;
  display: flex; align-items: center; gap: .5rem;
}
.tier-features li + li { border-top: 1px solid var(--border); }
.tier-features li svg {
  width: 16px; height: 16px; flex-shrink: 0; color: var(--color-accent);
}
.tier-cta {
  margin-top: auto; padding-top: 1.5rem; width: 100%;
}
.tier-cta a {
  display: flex; align-items: center; justify-content: center; gap: .4rem;
  width: 100%; padding: .8rem 1.25rem;
  border-radius: 12px;
  font-family: var(--font-display);
  font-size: .88rem; font-weight: 700;
  text-decoration: none; cursor: pointer;
  transition: all .2s ease;
}
.tier-cta--outline a {
  background: var(--card-bg, #ffffff);
  border: 1.5px solid var(--border);
  color: var(--ink);
}
.tier-cta--outline a:hover {
  border-color: var(--navy);
  background: rgba(15,29,53,.03);
}
.tier-cta--primary a {
  background: var(--navy-deep, #0F1D35);
  border: 1.5px solid var(--navy-deep, #0F1D35);
  color: #fff;
  box-shadow: 0 2px 12px rgba(15,29,53,.25);
}
.tier-cta--primary a:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(15,29,53,.35);
}
.tier-cta--terra a {
  background: var(--color-accent);
  border: 1.5px solid var(--color-accent);
  color: #fff;
  box-shadow: 0 2px 12px rgba(45, 91, 215,.3);
}
.tier-cta--terra a:hover {
  background: var(--color-accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(45, 91, 215,.4);
}

.tier-validity {
  margin-top: .75rem; text-align: center;
  font-family: var(--font-display);
  font-size: .8rem; color: var(--muted);
}

/* Fiscal banner */
.adh-fiscal-banner {
  max-width: 680px; margin: 1.75rem auto 0;
}
.adh-fiscal-inner {
  display: flex; align-items: center; gap: 1rem;
  padding: 1rem 1.5rem;
  background: rgba(5,150,105,.06);
  border: 1px solid rgba(5,150,105,.15);
  border-radius: 14px;
  text-align: left;
}
.adh-fiscal-inner svg {
  flex-shrink: 0; color: #059669;
}
.adh-fiscal-inner p {
  font-size: .88rem; color: var(--body); line-height: 1.55; margin: 0;
}
.adh-fiscal-inner a {
  color: #059669; font-weight: 600;
  text-decoration: underline; text-underline-offset: 3px;
}
.adh-fiscal-inner strong { color: #059669; }

/* ---------- Bottom CTA ---------- */
.adh-bottom-cta {
  text-align: center;
  padding: 4rem 1.5rem 4.5rem;
  background: linear-gradient(170deg, #1e3a8a 0%, #1B2A4A 100%);
  color: #fff; position: relative; overflow: hidden;
}
.adh-bottom-cta::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(45, 91, 215,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(45, 91, 215,.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, black 10%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, black 10%, transparent 70%);
  pointer-events: none;
}
.adh-bottom-cta__inner {
  position: relative; z-index: 1;
  max-width: 500px; margin: 0 auto;
}
.adh-bottom-cta h2 {
  font-family: var(--font-heading);
  font-size: 1.6rem; font-weight: 700;
  margin: 0 0 .75rem;
  color: #f8fafc;
  text-shadow: 0 2px 24px rgba(0,0,0,.5), 0 0 60px rgba(45, 91, 215,.15);
}
.adh-bottom-cta p {
  font-size: .95rem; opacity: .75;
  margin: 0 0 .5rem; line-height: 1.6;
}
.adh-bottom-cta__price {
  font-family: var(--font-display);
  font-size: 1.05rem; font-weight: 700;
  opacity: 1 !important; color: var(--color-accent);
  margin-bottom: 2rem !important;
}
.adh-bottom-cta .adh-cta-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  padding: .95rem 2.5rem;
  background: var(--color-accent);
  color: #fff; border: none; border-radius: 12px;
  font-family: var(--font-display);
  font-size: .95rem; font-weight: 700;
  text-decoration: none; cursor: pointer;
  transition: all .2s ease;
  box-shadow: 0 2px 12px rgba(45, 91, 215,.3);
}
.adh-bottom-cta .adh-cta-btn:hover {
  background: var(--color-accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(45, 91, 215,.4);
}
.adh-bottom-secure {
  display: flex; align-items: center; justify-content: center; gap: .3rem;
  font-family: var(--font-display);
  font-size: .75rem; color: rgba(255,255,255,.45); margin-top: .75rem;
}

/* ---------- Contact ---------- */
.adh-contact {
  text-align: center; padding: 2.5rem 1.5rem;
}
.adh-contact p {
  font-size: .9rem; color: var(--muted); margin: 0;
}
.adh-contact a {
  font-weight: 600; color: var(--blue);
  text-decoration: underline; text-underline-offset: 3px;
}

/* ---------- FAQ ---------- */
.adh-faq {
  max-width: 700px; margin: 0 auto;
}
.adh-faq .faq-item {
  background: var(--card-bg, #ffffff);
  box-shadow: var(--sh-sm);
}
.adh-faq .faq-question {
  color: var(--ink);
}
.adh-faq .faq-answer-inner,
.adh-faq .faq-answer-inner p {
  font-size: .85rem;
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  .why-grid { grid-template-columns: 1fr; max-width: 360px; margin: 0 auto; }
  .tier-grid { grid-template-columns: 1fr; max-width: 360px; margin: 0 auto; }
  .tier-card.recommended { transform: none; }
  .tier-card.recommended:hover { transform: translateY(-4px); }
  .adh-fiscal-inner { flex-direction: column; text-align: center; }
}

/* ---------- Dark mode ---------- */
@media (prefers-color-scheme: dark) {
  .adh-section {
    color: var(--text-dark, #e2e8f0);
  }
  .adh-section__title {
    color: var(--ink, #e2e8f0);
  }
  .adh-section__sub {
    color: var(--muted, #94a3b8);
  }
  .why-card {
    background: var(--card-bg, #1e293b);
    border-color: var(--border, #334155);
  }
  .why-card h3 { color: var(--ink, #e2e8f0); }
  .why-card p { color: var(--muted, #94a3b8); }
  .why-icon { background: rgba(51, 65, 85, .5); }
  .tier-card {
    background: var(--card-bg, #1e293b);
    border-color: var(--border, #334155);
  }
  .tier-card.recommended {
    border-color: var(--sky, #60a5fa);
  }
  .tier-badge {
    background: var(--sky, #60a5fa); color: #0f172a;
  }
  .tier-name { color: var(--ink, #e2e8f0); }
  .tier-price { color: var(--ink, #e2e8f0); }
  .tier-price span { color: var(--muted, #94a3b8); }
  .tier-desc { color: var(--muted, #94a3b8); }
  .tier-features li { color: var(--body, #cbd5e1); }
  .tier-features li + li { border-top-color: var(--border, #334155); }
  .tier-icon--base { background: rgba(96,165,250,.12); }
  .tier-icon--mid { background: rgba(96,165,250,.12); }
  .tier-icon--mid svg { stroke: var(--sky, #60a5fa) !important; }
  .tier-cta--primary a {
    background: var(--sky, #60a5fa);
    border-color: var(--sky, #60a5fa);
    color: #0f172a;
    box-shadow: 0 2px 12px rgba(96,165,250,.3);
  }
  .tier-cta--primary a:hover {
    box-shadow: 0 4px 20px rgba(96,165,250,.4);
  }
  .tier-cta--outline a {
    background: transparent;
    border-color: var(--border, #334155);
    color: var(--ink, #e2e8f0);
  }
  .tier-cta--outline a:hover {
    border-color: var(--sky, #60a5fa);
    background: rgba(96,165,250,.08);
    color: var(--sky, #60a5fa);
  }
  .tier-validity { color: var(--muted, #94a3b8); }
  .adh-fiscal-inner {
    background: rgba(52,211,153,.08);
    border-color: rgba(52,211,153,.2);
  }
  .adh-fiscal-inner p { color: var(--body, #cbd5e1); }
  .adh-fiscal-inner strong { color: #34d399; }
  .adh-fiscal-inner a { color: #34d399; }
  .adh-fiscal-inner svg { color: #34d399; }
  .adh-bottom-cta {
    background: linear-gradient(170deg, #1e3a8a 0%, #0a1628 100%);
  }
  .adh-contact p { color: var(--muted, #94a3b8); }
  .adh-contact a { color: var(--sky, #60a5fa); }
}