/* ==========================================================================
   offer.css — Landing page d'achat de Planet Packs
   Chargée uniquement par les pages d'offre (agir/entreprise, agir/particulier…).
   S'appuie sur les tokens déclarés dans includes/header.php et sur les
   composants de main.css (.container, .btn, .reveal).
   ========================================================================== */

.offer-page {
    background-color: var(--color-bg-darkest);
    color: var(--color-text-light);
    /* main.css décale le contenu sous le bandeau fixe. Ici le bandeau est
       transparent au-dessus du hero : l'image doit remonter jusqu'en haut. */
    padding-top: 0;
}

/* Les ancres du menu doivent s'arrêter sous le bandeau, pas dessous. */
.offer-pack,
.offer-tiers,
.offer-benefits,
.offer-faq,
.offer-contact {
    scroll-margin-top: var(--nav-height);
}

/* ── Éléments partagés entre sections ─────────────────────────────────── */

.offer-eyebrow {
    font-family: var(--font-secondary);
    font-size: var(--text-sm);
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: 20px;
}

/* Titres en serif de marque — la police du logo Planet Elements. */
.offer-section__title {
    font-family: var(--font-serif);
    font-size: var(--text-2xl);
    font-weight: 400;
    line-height: var(--leading-snug);
    letter-spacing: var(--tracking-tight);
    color: var(--color-text-light);
}

.offer-section__subtitle {
    font-family: var(--font-secondary);
    font-size: var(--text-md);
    line-height: var(--leading-relaxed);
    color: var(--color-text-subtle);
    max-width: 60ch;
    margin-top: 20px;
}

/* ── Hero ─────────────────────────────────────────────────────────────── */

.offer-hero {
    background-color: var(--color-bg-darkest);
    padding: 180px 0 120px;
    position: relative;
    overflow: hidden;
    isolation: isolate;
}

/* Image de fond, remplaçable depuis offers.php ('hero_image'). */
.offer-hero__bg {
    position: absolute;
    inset: 0;
    z-index: -2;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

/* Voile sombre : assure la lisibilité du texte par-dessus l'image du hero.
   Opacités volontairement légères pour laisser respirer la photo. */
.offer-hero::after {
    content: "";
    position: absolute;
    inset: 0;
    z-index: -1;
    background:
        linear-gradient(to bottom,
            rgba(14, 13, 12, 0.30) 0%,
            rgba(14, 13, 12, 0.70) 55%,
            rgba(14, 13, 12, 0.50) 100%),
        radial-gradient(circle at 50% 38%, rgba(49, 247, 189, 0.16) 0%, transparent 62%);
    pointer-events: none;
}

.offer-hero__inner {
    position: relative;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.offer-hero__title {
    font-family: var(--font-serif);
    font-size: var(--text-4xl);
    font-weight: 400;
    line-height: var(--leading-tight);
    letter-spacing: var(--tracking-tight);
    color: var(--color-text-light);
    max-width: 19ch;
    margin: 0;
}

.offer-hero__subtitle {
    font-family: var(--font-secondary);
    font-size: var(--text-lg);
    line-height: var(--leading-relaxed);
    color: var(--color-text-subtle);
    max-width: 56ch;
    margin-top: 28px;
}

.offer-hero__cta {
    margin-top: 44px;
}

/* ── Anatomie d'un Planet Pack ────────────────────────────────────────── */

.offer-pack {
    background-color: var(--color-bg-dark);
    padding: 120px 0;
}

.pack-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin: 64px 0 0;
    padding: 0;
    list-style: none;
}

.pack-item {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    border: 1px solid var(--color-border-dark);
    border-radius: var(--radius-lg);
    background-color: rgba(255, 255, 255, 0.02);
    overflow: hidden;
}

/* Visuel de l'action, repris de la page d'accueil */
.pack-item__media {
    display: block;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background-color: var(--color-bg-darkest);
}

.pack-item__media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.5s ease;
}

.pack-item:hover .pack-item__media img {
    transform: scale(1.04);
}

.pack-item__body {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: 32px;
}

.pack-item__figure {
    font-family: var(--font-primary);
    font-size: 56px;
    font-weight: 700;
    line-height: 1;
    letter-spacing: var(--tracking-tighter);
    color: var(--color-accent);
}

.pack-item__label {
    font-family: var(--font-primary);
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--color-text-light);
    margin-top: 16px;
}

.pack-item__sub {
    font-family: var(--font-secondary);
    font-size: var(--text-base);
    line-height: var(--leading-normal);
    color: var(--color-text-muted);
    margin-top: 6px;
}

.pack-carbon {
    margin-top: 32px;
    padding: 32px;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(49, 247, 189, 0.3);
    background-color: rgba(49, 247, 189, 0.06);
    text-align: center;
}

.pack-carbon__title {
    font-family: var(--font-serif);
    font-size: var(--text-xl);
    font-weight: 400;
    color: var(--color-accent);
}

.pack-carbon__sub {
    font-family: var(--font-secondary);
    font-size: var(--text-base);
    color: var(--color-text-subtle);
    margin-top: 8px;
}

/* ── Paliers ──────────────────────────────────────────────────────────── */

.offer-tiers {
    background-color: var(--color-bg-darkest);
    padding: 120px 0;
}

.tier-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-top: 64px;
    align-items: stretch;
}

/* Les cartes forment un groupe de boutons radio : cliquer sur l'une d'elles
   la met en surbrillance et retire celle des autres (main.js). */
.tier-card {
    position: relative;
    display: flex;
    flex-direction: column;
    padding: 36px 28px;
    border: 1px solid var(--color-border-dark);
    border-radius: var(--radius-lg);
    background-color: var(--color-bg-dark);
    cursor: pointer;
    transition: border-color 0.25s ease, transform 0.25s ease,
                background-color 0.25s ease;
}

.tier-card:hover {
    border-color: rgba(49, 247, 189, 0.45);
    transform: translateY(-4px);
}

.tier-card:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 3px;
}

.tier-card--selected {
    border-color: var(--color-accent);
    background-color: rgba(49, 247, 189, 0.05);
}

/* Liseré accent en haut, révélé uniquement sur la carte sélectionnée */
.tier-card__badge {
    position: absolute;
    top: -1px;
    left: 28px;
    right: 28px;
    height: 3px;
    border-radius: 0 0 3px 3px;
    background-color: var(--color-accent);
    opacity: 0;
    transition: opacity 0.25s ease;
}

.tier-card--selected .tier-card__badge {
    opacity: 1;
}

.tier-card__name {
    font-family: var(--font-primary);
    font-size: var(--text-base);
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--color-accent);
    margin: 0;
}

.tier-card__packs {
    display: flex;
    flex-direction: column;
    margin-top: 24px;
}

.tier-card__packs-count {
    font-family: var(--font-primary);
    font-size: 44px;
    font-weight: 700;
    line-height: 1;
    letter-spacing: var(--tracking-tighter);
    color: var(--color-text-light);
}

.tier-card__packs-label {
    font-family: var(--font-secondary);
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    margin-top: 6px;
}

.tier-card__price {
    font-family: var(--font-primary);
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--color-text-light);
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--color-border-dark);
}

.tier-card__price-note {
    font-family: var(--font-secondary);
    font-size: var(--text-xs);
    font-weight: 400;
    color: var(--color-text-muted);
    margin-left: 4px;
}

.tier-card__finances {
    font-family: var(--font-secondary);
    font-size: var(--text-xs);
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    margin-top: 24px;
}

.tier-card__impact {
    list-style: none;
    padding: 0;
    margin: 12px 0 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex-grow: 1;
}

.tier-card__impact li {
    font-family: var(--font-secondary);
    font-size: var(--text-sm);
    line-height: var(--leading-normal);
    color: var(--color-text-subtle);
}

.tier-card__impact strong {
    display: block;
    font-family: var(--font-primary);
    font-size: var(--text-md);
    font-weight: 700;
    color: var(--color-text-light);
}

.tier-card__cta {
    margin-top: 28px;
    width: 100%;
    justify-content: center;
}

/* Palier sans lien Stripe : visible mais inactif */
.tier-card__cta.is-disabled {
    opacity: 0.4;
    cursor: not-allowed;
    pointer-events: none;
}

.offer-secure-note {
    font-family: var(--font-secondary);
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    text-align: center;
    margin-top: 40px;
}

/* ── Bénéfices ────────────────────────────────────────────────────────── */

.offer-benefits {
    background-color: var(--color-bg-dark);
    padding: 120px 0;
}

.benefit-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin: 56px 0 0;
    padding: 0;
    list-style: none;
}

.benefit-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 28px;
    border-radius: var(--radius-md);
    background-color: rgba(255, 255, 255, 0.03);
    font-family: var(--font-secondary);
    font-size: var(--text-md);
    line-height: var(--leading-normal);
    color: var(--color-text-light);
}

.benefit-item__icon {
    flex: none;
    width: 24px;
    height: 24px;
    color: var(--color-accent);
    margin-top: 2px;
}

/* ── FAQ ──────────────────────────────────────────────────────────────── */

.offer-faq {
    background-color: var(--color-bg-darkest);
    padding: 120px 0;
}

.faq-list {
    margin-top: 56px;
    max-width: 820px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.faq-item {
    border: 1px solid var(--color-border-dark);
    border-radius: var(--radius-md);
    background-color: var(--color-bg-dark);
    transition: border-color 0.25s ease;
}

.faq-item[open],
.faq-item:hover {
    border-color: rgba(49, 247, 189, 0.35);
}

.faq-item__question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    padding: 24px 28px;
    cursor: pointer;
    font-family: var(--font-primary);
    font-size: var(--text-md);
    font-weight: 600;
    line-height: var(--leading-normal);
    color: var(--color-text-light);
    /* Masque le triangle natif du <summary> */
    list-style: none;
}

.faq-item__question::-webkit-details-marker {
    display: none;
}

.faq-item__question:hover {
    color: var(--color-accent);
}

.faq-item__question:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: -2px;
    border-radius: var(--radius-md);
}

.faq-item__chevron {
    flex: none;
    color: var(--color-accent);
    transition: transform 0.25s ease;
}

.faq-item[open] .faq-item__chevron {
    transform: rotate(180deg);
}

.faq-item__answer {
    padding: 0 28px 26px;
}

.faq-item__answer p {
    font-family: var(--font-secondary);
    font-size: var(--text-base);
    line-height: var(--leading-relaxed);
    color: var(--color-text-subtle);
    max-width: 68ch;
}

/* ── Contact ──────────────────────────────────────────────────────────── */

.offer-contact {
    background-color: var(--color-bg-darkest);
    padding: 120px 0 140px;
}

.offer-contact__inner {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.offer-contact__title {
    font-family: var(--font-serif);
    font-size: var(--text-2xl);
    font-weight: 400;
    line-height: var(--leading-snug);
    letter-spacing: var(--tracking-tight);
    color: var(--color-text-light);
}

.offer-contact__subtitle {
    font-family: var(--font-secondary);
    font-size: var(--text-md);
    line-height: var(--leading-relaxed);
    color: var(--color-text-subtle);
    max-width: 56ch;
    margin-top: 16px;
}

.offer-contact__cta {
    margin-top: 36px;
}

/* ── Page de remerciement ─────────────────────────────────────────────── */

.offer-thanks {
    background-color: var(--color-bg-darkest);
    color: var(--color-text-light);
    min-height: 70vh;
    display: flex;
    align-items: center;
    padding: 160px 0 140px;
    text-align: center;
}

.offer-thanks__inner {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.offer-thanks__icon {
    width: 64px;
    height: 64px;
    color: var(--color-accent);
}

.offer-thanks__title {
    font-family: var(--font-serif);
    font-size: var(--text-3xl);
    font-weight: 400;
    line-height: var(--leading-tight);
    letter-spacing: var(--tracking-tight);
    color: var(--color-text-light);
    margin-top: 28px;
}

.offer-thanks__text {
    font-family: var(--font-secondary);
    font-size: var(--text-md);
    line-height: var(--leading-relaxed);
    color: var(--color-text-subtle);
    max-width: 54ch;
    margin-top: 20px;
}

.offer-thanks__actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
    margin-top: 40px;
}

/* ==========================================================================
   Responsive
   ========================================================================== */

/* Tablette — jusqu'à 1024px */
@media (max-width: 1024px) {
    .tier-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .offer-hero__title {
        font-size: var(--text-3xl);
    }
}

/* Mobile — jusqu'à 768px */
@media (max-width: 768px) {
    .offer-hero {
        padding: 130px 0 90px;
    }

    .offer-hero__title {
        font-size: var(--text-2xl);
        max-width: none;
    }

    .offer-hero__subtitle {
        font-size: var(--text-md);
    }

    .offer-pack,
    .offer-tiers,
    .offer-benefits,
    .offer-faq {
        padding: 80px 0;
    }

    .faq-list {
        margin-top: 40px;
    }

    .faq-item__question {
        padding: 20px 22px;
        font-size: var(--text-base);
        gap: 16px;
    }

    .faq-item__answer {
        padding: 0 22px 22px;
    }

    .offer-contact {
        padding: 80px 0 100px;
    }

    .offer-section__title {
        font-size: var(--text-xl);
    }

    .pack-grid,
    .benefit-grid {
        grid-template-columns: 1fr;
        gap: 16px;
        margin-top: 40px;
    }

    .pack-item__body {
        padding: 28px 24px;
    }

    .pack-item__media {
        aspect-ratio: 16 / 9;
    }

    .pack-item__figure {
        font-size: 46px;
    }

    .tier-grid {
        grid-template-columns: 1fr;
        margin-top: 40px;
    }

    /* Pas de décalage au survol sur mobile : le tap ne doit rien bouger */
    .tier-card:hover {
        transform: none;
    }

    .offer-thanks {
        padding: 120px 0 90px;
    }

    .offer-thanks__title {
        font-size: var(--text-2xl);
    }
}

/* Petit mobile — jusqu'à 480px */
@media (max-width: 480px) {
    .offer-hero__title {
        font-size: var(--text-xl);
    }

    .tier-card__packs-count {
        font-size: 38px;
    }

    .offer-thanks__actions {
        flex-direction: column;
        width: 100%;
    }
}

/* Respecte prefers-reduced-motion (main.css neutralise déjà .reveal) */
@media (prefers-reduced-motion: reduce) {
    .tier-card,
    .tier-card:hover,
    .pack-item__media img,
    .pack-item:hover .pack-item__media img {
        transition: none;
        transform: none;
    }
}