/* ============================================================
   Newsletter (newsletter.html)
   Loaded after styles.css, polish.css and books.css; scoped to
   body.newsletter-page. Brings the shared books.css page parts to the
   homepage language: left-aligned navy headings, hairline cards with
   drawn SVG icons, a labelled single-column form, no coloured side
   borders. Tokens from styles.css only.
   ============================================================ */

/* ---------- Hero ---------- */
.newsletter-page .book-hero .hero-title {
    max-width: 20ch;
    font-size: clamp(2.2rem, 5vw, 3.4rem);
    line-height: 1.1;
    letter-spacing: -0.02em;
    text-wrap: balance;
}

.newsletter-page .book-hero .hero-title .highlight {
    -webkit-text-fill-color: currentColor;
    color: var(--signal-on-dark);
}

.newsletter-page .book-hero .hero-title .highlight::after {
    display: none;
}

.newsletter-page .book-hero .hero-subtitle {
    max-width: 62ch;
    font-size: clamp(1.05rem, 1.6vw, 1.2rem);
}

.newsletter-page .book-hero .hero-buttons {
    justify-content: flex-start;
    margin-bottom: 0;
}

.newsletter-page main .book-breadcrumb li a:not(.btn):not([class*="btn"]),
.newsletter-page main .book-breadcrumb li a:not(.btn):not([class*="btn"]):hover {
    color: var(--white);
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 3px;
}

/* ---------- Intro with the three facts ---------- */
.newsletter-page .series-intro {
    padding: var(--polish-section) 0;
    background: var(--white);
}

.newsletter-page .series-intro .container {
    text-align: left;
}

.newsletter-page .newsletter-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(200px, 100%), 1fr));
    gap: 1.5rem 2rem;
    margin: 0 0 clamp(2.5rem, 5vw, 3.5rem);
    padding: 0;
}

.newsletter-page .newsletter-stat {
    padding-top: 1.25rem;
    border-top: 1px solid var(--border-medium);
}

.newsletter-page .newsletter-stat dt {
    font-family: var(--font-primary);
    font-size: clamp(2rem, 3.5vw, 2.6rem);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.02em;
    color: var(--blue-text);
}

.newsletter-page .newsletter-stat dd {
    margin: 0.4rem 0 0;
    font-size: 1rem;
    font-weight: 500;
    color: var(--medium-gray);
}

.newsletter-page .series-intro h2,
.newsletter-page .section-header h2 {
    max-width: 24ch;
    margin: 0 0 1rem;
    font-size: clamp(1.9rem, 3.2vw, 2.6rem);
    line-height: 1.12;
    letter-spacing: -0.02em;
    text-align: left;
    color: var(--dark-gray);
}

.newsletter-page .series-intro p {
    max-width: 62ch;
    font-size: 1.1rem;
    line-height: 1.7;
    color: var(--dark-gray);
}

/* ---------- Section headers ---------- */
.newsletter-page .section-header {
    max-width: none;
    margin: 0 0 2.5rem;
    text-align: left;
}

.newsletter-page .section-header p {
    max-width: 62ch;
    margin: 0;
    font-size: 1.1rem;
    line-height: 1.7;
    color: var(--medium-gray);
}

/* ---------- Signup ---------- */
.newsletter-page .newsletter-signup {
    padding: var(--polish-section) 0;
    background: var(--light-gray);
}

.newsletter-page .signup-container {
    max-width: 640px;
    margin: 0;
    padding: clamp(1.75rem, 4vw, 2.5rem);
    text-align: left;
    background: var(--white);
    border: 1px solid var(--border-light);
    border-radius: 16px;
    box-shadow: var(--polish-card-shadow);
}

.newsletter-page .signup-container .section-header {
    margin-bottom: 1.75rem;
}

/* Wide screens: heading on the left, form on the right */
@media (min-width: 900px) {
    .newsletter-page .signup-container {
        display: grid;
        grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
        gap: clamp(2rem, 5vw, 4rem);
        align-items: start;
        max-width: none;
    }

    .newsletter-page .signup-container .section-header {
        margin-bottom: 0;
    }
}

.newsletter-page .signup-form {
    gap: 1.1rem;
    margin-top: 0;
}

.newsletter-page .signup-field {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.newsletter-page .signup-field label {
    font-family: var(--font-primary);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--dark-gray);
}

.newsletter-page .signup-form input[type="email"],
.newsletter-page .signup-form input[type="text"] {
    min-height: 48px;
    padding: 12px 16px;
    border: 1px solid var(--border-medium);
    border-radius: 12px;
    background: var(--white);
    color: var(--dark-gray);
}

.newsletter-page .signup-form input:focus {
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
    border-color: var(--primary-blue);
}

.newsletter-page .signup-form input.error,
.newsletter-page .signup-form input[aria-invalid="true"] {
    border-color: var(--error);
}

.newsletter-page .signup-form .btn-primary {
    margin-top: 0.35rem;
}

.newsletter-page .signup-note {
    margin: 0.25rem 0 0;
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--medium-gray);
}

/* Success message that script.js swaps in for the form */
.newsletter-page .form-success h3 {
    margin: 0 0 0.5rem;
    font-size: 1.2rem;
    color: var(--dark-gray);
}

.newsletter-page .form-success p {
    margin: 0;
    color: var(--dark-gray);
}

/* ---------- Topics ---------- */
.newsletter-page .newsletter-topics {
    padding: var(--polish-section) 0;
    background: var(--white);
}

.newsletter-page .topics-grid {
    gap: 1.5rem;
    margin-top: 0;
}

.newsletter-page .topic-card {
    display: flex;
    flex-direction: column;
    padding: 2rem;
    text-align: left;
    background: var(--white);
    border: 1px solid var(--border-light);
    border-radius: 16px;
    box-shadow: var(--polish-card-shadow);
}

.newsletter-page .topic-card h3,
.newsletter-page .benefit-card h3,
.newsletter-page .channel-card h3 {
    margin: 0 0 0.75rem;
    font-size: 1.2rem;
    line-height: 1.3;
    color: var(--dark-gray);
}

.newsletter-page .topic-card p,
.newsletter-page .benefit-card p,
.newsletter-page .channel-card p {
    margin: 0;
    font-size: 1rem;
    line-height: 1.65;
    color: var(--medium-gray);
}

/* ---------- Issue format ---------- */
.newsletter-page .issue-format {
    padding: var(--polish-section) 0;
    background: var(--light-gray);
}

.newsletter-page .format-grid {
    grid-template-columns: repeat(auto-fit, minmax(min(250px, 100%), 1fr));
    gap: 1.5rem;
    margin-top: 0;
}

.newsletter-page .benefit-card {
    display: flex;
    flex-direction: column;
    padding: 2rem;
    text-align: left;
    background: var(--white);
}

.newsletter-page .benefit-card:hover {
    transform: none;
}

/* ---------- Example topics ---------- */
.newsletter-page .community-channels {
    padding: var(--polish-section) 0;
    background: var(--white);
}

.newsletter-page .channels-grid {
    gap: 1.5rem;
    margin-top: 0;
}

.newsletter-page .channel-card {
    display: flex;
    flex-direction: column;
    padding: 2rem;
    text-align: left;
    background: var(--white);
    border: 1px solid var(--border-light);
    border-radius: 16px;
    box-shadow: var(--polish-card-shadow);
}

.newsletter-page .channel-card:hover {
    transform: none;
}

.newsletter-page .channel-card .issue-label {
    margin: 0 0 0.6rem;
    font-family: var(--font-primary);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--blue-text);
}

/* ---------- Closing CTA ---------- */
.newsletter-page .book-cta {
    padding: var(--polish-section) 0;
}

.newsletter-page .book-cta h2 {
    font-size: clamp(1.9rem, 3.2vw, 2.6rem);
    letter-spacing: -0.02em;
}

.newsletter-page .book-cta p {
    max-width: 52ch;
    font-size: 1.1rem;
    line-height: 1.7;
}

/* ---------- Focus ---------- */
.newsletter-page main a:focus-visible,
.newsletter-page main button:focus-visible {
    outline: 2px solid var(--primary-blue);
    outline-offset: 3px;
    border-radius: 4px;
}

.newsletter-page .book-hero a:focus-visible,
.newsletter-page .book-cta a:focus-visible {
    outline-color: var(--white);
}

@media (max-width: 768px) {
    .newsletter-page .book-hero .hero-buttons {
        flex-direction: column;
        align-items: stretch;
    }
}

/* Phones: a little less inner padding so the copy keeps its width */
@media (max-width: 560px) {
    .newsletter-page .topic-card,
    .newsletter-page .benefit-card,
    .newsletter-page .channel-card {
        padding: 1.5rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    .newsletter-page .btn:hover {
        transform: none;
    }
}