/* ============================================================
   Product pages (chat-aziendale.html, keel.html)
   Both pages share one structure: dark hero, quick answer, key
   figures, feature cards, numbered steps, use cases, plans or
   audience, FAQ and a closing CTA. Loaded after polish.css, which
   already sets the navy left-aligned section headings, the solid
   hero accent and the hairline <details> FAQ.
   Tokens from styles.css only. Scoped to body.product-detail.
   ============================================================ */

.product-detail main > section {
    padding: var(--polish-section) 0;
}

/* ---------- Hero ---------- */
.product-detail .pd-hero {
    background: var(--gradient-hero-dark);
    color: var(--white);
    padding: clamp(120px, 13vw, 168px) 0 clamp(64px, 8vw, 104px);
}

.product-detail .pd-hero-content {
    max-width: 780px;
}

.product-detail .pd-hero h1 {
    font-family: var(--font-primary);
    font-size: clamp(2.3rem, 5vw, 3.6rem);
    line-height: 1.08;
    letter-spacing: -0.025em;
    text-wrap: balance;
    color: var(--white);
    max-width: 20ch;
    margin: 0 0 1.5rem;
}

.product-detail .pd-hero-lead {
    max-width: 62ch;
    margin: 0;
    font-size: 1.15rem;
    line-height: 1.7;
    color: var(--white);
}

.product-detail .pd-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 2.25rem;
}

.product-detail .pd-actions .btn,
.product-detail .pd-cta .btn {
    gap: 0.6rem;
    padding: 14px 28px;
    font-family: var(--font-primary);
    font-size: 1rem;
}

.product-detail .btn svg {
    width: 18px;
    height: 18px;
    flex: 0 0 18px;
}

.product-detail .btn-on-dark {
    background: transparent;
    color: var(--white);
    border: 1px solid rgba(255, 255, 255, 0.6);
}

.product-detail .btn-on-dark:hover {
    background: var(--white);
    color: var(--blue-text);
    transform: none;
}

.product-detail .pd-hero .btn:focus-visible,
.product-detail .pd-cta .btn:focus-visible {
    outline: 3px solid var(--signal-on-dark);
    outline-offset: 3px;
}

.product-detail .pd-hero-meta {
    margin: 1.75rem 0 0;
    font-size: 0.95rem;
    color: var(--muted-on-dark);
}

/* ---------- Quick answer ---------- */
.product-detail main > .pd-answer {
    padding: clamp(48px, 6vw, 72px) 0;
    background: var(--light-gray);
}

.product-detail .pd-answer-card {
    max-width: 880px;
    padding: clamp(1.75rem, 4vw, 2.5rem);
    background: var(--white);
    border: 1px solid var(--border-light);
    border-radius: 16px;
    box-shadow: var(--polish-card-shadow);
}

.product-detail .pd-answer-card h2 {
    font-size: 1.25rem;
    letter-spacing: -0.01em;
    color: var(--dark-gray);
    margin: 0 0 0.75rem;
}

.product-detail .pd-answer-card p {
    max-width: 72ch;
    margin: 0;
    font-size: 1.08rem;
    line-height: 1.75;
    color: var(--dark-gray);
}

/* ---------- Key figures ---------- */
.product-detail main > .pd-figures {
    padding: clamp(40px, 5vw, 64px) 0;
    background: var(--white);
}

.product-detail .pd-stats {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    margin: 0;
    padding: 0;
    list-style: none;
    border-top: 1px solid var(--border-light);
    border-bottom: 1px solid var(--border-light);
}

.product-detail .pd-stat {
    padding: 1.75rem 1.5rem;
}

.product-detail .pd-stat:first-child {
    padding-left: 0;
}

.product-detail .pd-stat + .pd-stat {
    border-left: 1px solid var(--border-light);
}

.product-detail .pd-stat-value {
    display: block;
    font-family: var(--font-primary);
    font-size: clamp(1.8rem, 3vw, 2.3rem);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.02em;
    color: var(--blue-text);
}

.product-detail .pd-stat-label {
    display: block;
    margin-top: 0.4rem;
    font-size: 0.98rem;
    line-height: 1.5;
    color: var(--medium-gray);
}

/* ---------- Card grids ---------- */
.product-detail .pd-tinted {
    background: var(--light-gray);
}

.product-detail .pd-grid {
    display: grid;
    gap: 1.5rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.product-detail .pd-grid--3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.product-detail .pd-grid--2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.product-detail .pd-grid--4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.product-detail .pd-card {
    display: flex;
    flex-direction: column;
    height: 100%;
    padding: 2rem;
    background: var(--white);
    border: 1px solid var(--border-light);
    border-radius: 16px;
    box-shadow: var(--polish-card-shadow);
}

.product-detail .pd-tinted .pd-card {
    box-shadow: none;
}

.product-detail .pd-card h3 {
    font-size: 1.2rem;
    line-height: 1.3;
    letter-spacing: -0.01em;
    color: var(--dark-gray);
    margin: 0 0 0.6rem;
}

.product-detail .pd-card p {
    margin: 0;
    line-height: 1.7;
    color: var(--medium-gray);
}

.product-detail .pd-card .icon-tile {
    margin-bottom: 1.25rem;
}

/* Use cases: icon beside the heading */
.product-detail .pd-card-head {
    display: flex;
    align-items: center;
    gap: 0.9rem;
    margin-bottom: 0.75rem;
}

.product-detail .pd-card-head .icon-tile {
    width: 44px;
    height: 44px;
    margin: 0;
    border-radius: 12px;
    flex: 0 0 44px;
}

.product-detail .pd-card-head .icon-tile svg {
    width: 22px;
    height: 22px;
}

.product-detail .pd-card-head h3 {
    margin: 0;
}

/* Example queries (Keel): the question is the content */
.product-detail .pd-query {
    margin: 0;
    font-size: 1.05rem;
    line-height: 1.6;
    color: var(--dark-gray);
}

.product-detail .pd-card .pd-query {
    color: var(--dark-gray);
}

/* ---------- Steps ---------- */
.product-detail .pd-steps {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 2rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.product-detail .pd-step {
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-light);
}

.product-detail .pd-step-num {
    display: inline-grid;
    place-items: center;
    width: 40px;
    height: 40px;
    margin-bottom: 1.25rem;
    border: 1px solid var(--border-medium);
    border-radius: 50%;
    font-family: var(--font-primary);
    font-weight: 600;
    color: var(--blue-text);
}

.product-detail .pd-step h3 {
    font-size: 1.15rem;
    color: var(--dark-gray);
    margin: 0 0 0.5rem;
}

.product-detail .pd-step p {
    margin: 0;
    line-height: 1.65;
    color: var(--medium-gray);
}

/* ---------- Plans (ChatAziendale) ---------- */
.product-detail .pd-plans {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.5rem;
    align-items: stretch;
}

.product-detail .pd-plan {
    display: flex;
    flex-direction: column;
    padding: 2rem;
    background: var(--white);
    border: 1px solid var(--border-light);
    border-radius: 16px;
    box-shadow: var(--polish-card-shadow);
}

.product-detail .pd-plan--featured {
    border: 2px solid var(--primary-green);
}

.product-detail .pd-plan h3 {
    font-size: 1.35rem;
    color: var(--dark-gray);
    margin: 0 0 0.75rem;
}

.product-detail .pd-price {
    margin: 0 0 0.5rem;
    font-family: var(--font-primary);
    font-size: 2.6rem;
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.02em;
    color: var(--dark-gray);
}

.product-detail .pd-price span {
    font-size: 1rem;
    font-weight: 400;
    letter-spacing: 0;
    color: var(--medium-gray);
}

.product-detail .pd-plan-for {
    margin: 0 0 1.5rem;
    color: var(--medium-gray);
}

.product-detail .pd-checks {
    margin: 0 0 2rem;
    padding: 1.25rem 0 0;
    list-style: none;
    border-top: 1px solid var(--border-light);
}

.product-detail .pd-checks li {
    position: relative;
    padding: 0.4rem 0 0.4rem 1.75rem;
    line-height: 1.5;
    color: var(--dark-gray);
}

/* Drawn check mark */
.product-detail .pd-checks li::before {
    content: '';
    position: absolute;
    left: 0.3rem;
    top: 0.62rem;
    width: 6px;
    height: 11px;
    border: solid var(--green-text);
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.product-detail .pd-plan .btn {
    width: 100%;
    margin-top: auto;
}

.product-detail .pd-note {
    max-width: 72ch;
    margin: 1.75rem 0 0;
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--medium-gray);
}

/* ---------- FAQ: title column + hairline list ---------- */
.product-detail .faq-section {
    background: var(--white);
}

.product-detail .faq-section.pd-tinted {
    background: var(--light-gray);
}

.product-detail .faq-container {
    display: grid;
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    column-gap: clamp(2rem, 5vw, 5rem);
    align-items: start;
}

.product-detail .faq-container .section-title {
    margin-bottom: 1.25rem;
}

.product-detail .faq-section .faq-list {
    gap: 0;
    border-top: 1px solid var(--border-light);
}

.product-detail .faq-section .faq-item summary h3 {
    font-size: 1.1rem;
    line-height: 1.35;
    font-weight: 600;
    margin: 0;
    color: var(--dark-gray);
    transition: color var(--transition-fast);
}

.product-detail .faq-section .faq-item summary:hover h3 {
    color: var(--blue-text);
}

.product-detail .faq-section .faq-item p {
    max-width: 68ch;
    margin: 0 0 1.5rem;
    padding: 0;
    line-height: 1.7;
    color: var(--medium-gray);
}

/* ---------- Closing CTA ---------- */
.product-detail .pd-cta {
    background: var(--black);
}

.product-detail .pd-cta::before {
    opacity: 1;
}

.product-detail .pd-cta .cta-content {
    max-width: 680px;
    margin: 0 auto;
    text-align: center;
}

.product-detail .pd-cta .cta-content h2 {
    font-size: clamp(1.9rem, 3.2vw, 2.6rem);
    line-height: 1.12;
    letter-spacing: -0.02em;
    margin: 0 0 1rem;
    color: var(--white);
}

.product-detail .pd-cta .cta-content p {
    margin: 0 0 2rem;
    font-size: 1.15rem;
    line-height: 1.65;
    opacity: 1;
    color: var(--white);
}

.product-detail .content-last-updated {
    margin: 0;
    padding: 1.25rem 20px;
}

/* ---------- Tablet ---------- */
@media (max-width: 960px) {
    .product-detail .pd-grid--3,
    .product-detail .pd-grid--4 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .product-detail .pd-steps {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .product-detail .pd-plans {
        grid-template-columns: minmax(0, 1fr);
        max-width: 520px;
    }

    .product-detail .faq-container {
        grid-template-columns: minmax(0, 1fr);
    }

    .product-detail .pd-stats {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .product-detail .pd-stat:nth-child(odd) {
        padding-left: 0;
        border-left: 0;
    }

    .product-detail .pd-stat:nth-child(n + 3) {
        border-top: 1px solid var(--border-light);
    }
}

/* ---------- Phone ---------- */
@media (max-width: 640px) {
    .product-detail .pd-hero {
        padding-top: 112px;
    }

    .product-detail .pd-hero-lead {
        font-size: 1.05rem;
    }

    .product-detail .pd-actions .btn {
        width: 100%;
    }

    .product-detail .pd-grid--2,
    .product-detail .pd-grid--3,
    .product-detail .pd-grid--4,
    .product-detail .pd-steps {
        grid-template-columns: minmax(0, 1fr);
    }

    .product-detail .pd-steps {
        gap: 1.5rem;
    }

    .product-detail .pd-card,
    .product-detail .pd-plan {
        padding: 1.5rem;
    }

    .product-detail .pd-stat {
        padding: 1.25rem 1rem;
    }

    .product-detail .pd-stat-value {
        font-size: 1.55rem;
    }

    .product-detail .pd-cta .cta-buttons .btn {
        width: 100%;
    }
}