/* =====================================================================
   RWF base styles — typography, layout, components.
   Built on top of theme.css variables (never raw hex). System font stack
   avoids external font loading entirely (§3c "Font display" flag).
   ===================================================================== */

/* ---------- Reset / base ---------- */
*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        "Helvetica Neue", Arial, "Noto Sans", sans-serif,
        "Apple Color Emoji", "Segoe UI Emoji";
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-white);
    -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--color-primary); text-decoration: none; }
a:hover { color: var(--color-primary-bright); text-decoration: underline; }

h1, h2, h3, h4 { line-height: 1.2; color: var(--color-text); margin: 0 0 0.5em; }
h1 { font-size: clamp(1.8rem, 4vw, 2.6rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); }
h3 { font-size: 1.25rem; }
p { margin: 0 0 1rem; }

/* ---------- Layout ---------- */
.container { width: min(100% - 2rem, 1140px); margin-inline: auto; }

.section { padding: 3rem 0; }
.section__title { margin-bottom: 1.5rem; }

/* ---------- Accessibility helpers ---------- */
.visually-hidden {
    position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
    overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip-link {
    position: absolute; left: -999px; top: 0; z-index: 100;
    background: var(--color-primary-dark); color: var(--color-white);
    padding: 0.6rem 1rem; border-radius: 0 0 4px 0;
}
.skip-link:focus { left: 0; color: var(--color-white); }

/* ---------- Buttons ---------- */
.btn {
    display: inline-block; padding: 0.7rem 1.4rem; border-radius: 6px;
    font-weight: 600; line-height: 1; text-align: center; cursor: pointer;
    border: 2px solid transparent; transition: background-color .15s, color .15s;
}
.btn:hover { text-decoration: none; }
.btn--primary { background: var(--color-primary); color: var(--color-white); }
.btn--primary:hover { background: var(--color-primary-bright); color: var(--color-white); }
.btn--secondary { background: var(--color-secondary); color: var(--color-text); }
.btn--secondary:hover { background: var(--color-secondary-dark); color: var(--color-white); }
.btn--ghost {
    background: transparent; color: var(--color-primary);
    border-color: var(--color-primary);
}
.btn--ghost:hover { background: var(--color-primary); color: var(--color-white); }

/* ---------- Header / nav ---------- */
.site-header { background: var(--color-primary-dark); color: var(--color-white); }
.site-header__inner {
    display: flex; align-items: center; gap: 1rem;
    padding: 0.75rem 0; flex-wrap: wrap;
}
.site-header__brand {
    display: flex; align-items: center; gap: 0.6rem;
    color: var(--color-white); font-weight: 700;
}
.site-header__brand:hover { color: var(--color-white); text-decoration: none; }
.site-header__name { font-size: 1.05rem; }
.site-nav { margin-left: auto; }
.site-nav__list {
    display: flex; gap: 1.25rem; list-style: none; margin: 0; padding: 0;
}
.site-nav__link { color: var(--color-white); font-weight: 500; }
.site-nav__link:hover { color: var(--color-secondary-light); text-decoration: none; }
.site-nav__link[aria-current="page"] {
    color: var(--color-secondary-light);
    border-bottom: 2px solid var(--color-secondary);
}
.site-nav__toggle { display: none; }
.site-header__cta { flex-shrink: 0; }

/* ---------- Hero ---------- */
.hero {
    background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
    color: var(--color-white); padding: 4rem 0;
}
.hero__title { color: var(--color-white); }
.hero__lead { font-size: 1.15rem; max-width: 42rem; color: var(--color-secondary-tint); }
.hero__actions { display: flex; gap: 0.75rem; flex-wrap: wrap; margin-top: 1.5rem; }

/* ---------- Cards ---------- */
.card-grid {
    display: grid; gap: 1.5rem;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
}
.card {
    background: var(--color-bg-offwhite); border: 1px solid var(--color-border-light);
    border-radius: 8px; overflow: hidden; display: flex; flex-direction: column;
}
.card__media { width: 100%; aspect-ratio: 3 / 2; object-fit: cover; }
.card__body { padding: 1rem 1.15rem 1.25rem; }
.card__title { margin-bottom: 0.35rem; }
.card__summary { color: var(--color-text-muted); }

/* ---------- Interior page header ---------- */
.container--narrow { width: min(100% - 2rem, 760px); margin-inline: auto; }
.page-header {
    background: var(--color-bg-subtle);
    border-bottom: 1px solid var(--color-border-light);
    padding: 2.5rem 0;
}
.page-header__title { margin-bottom: 0.35rem; }
.page-header__intro { color: var(--color-text-muted); max-width: 46rem; margin: 0; }

/* ---------- Card meta / links ---------- */
.card__meta { color: var(--color-text-subtle); font-size: 0.85rem; margin: 0 0 0.35rem; }
.card__title a { color: var(--color-text); }
.card__title a:hover { color: var(--color-primary); text-decoration: none; }
.empty-state { color: var(--color-text-muted); padding: 2rem 0; }

/* ---------- Article (detail pages) & prose ---------- */
.article__back { margin-bottom: 1rem; }
.article__meta { color: var(--color-text-subtle); margin-bottom: 1.25rem; }
.article__media { width: 100%; border-radius: 8px; margin-bottom: 1.5rem; object-fit: cover; }
.article__body p, .prose p { margin-bottom: 1rem; }
.prose h2 { margin-top: 2rem; }
.article__cta { margin-top: 2rem; display: flex; gap: 0.75rem; flex-wrap: wrap; }

/* ---------- Contact details (static block) ---------- */
.contact-details { font-style: normal; }
.contact-details__name { font-size: 1.15rem; margin-bottom: 1rem; }
.contact-details__row { display: flex; gap: 1rem; margin-bottom: 0.6rem; }
.contact-details__label {
    flex: 0 0 6rem; color: var(--color-text-subtle); font-weight: 600;
}
@media (max-width: 480px) {
    .contact-details__row { flex-direction: column; gap: 0.15rem; }
    .contact-details__label { flex-basis: auto; }
}

/* ---------- Contact + forms ---------- */
.contact { display: grid; gap: 2.5rem; grid-template-columns: 1fr 1.4fr; align-items: start; }
.contact__details p { margin-bottom: 0.75rem; }
@media (max-width: 720px) { .contact { grid-template-columns: 1fr; } }

.form .field { margin-bottom: 1.15rem; }
.field label { display: block; font-weight: 600; margin-bottom: 0.3rem; }
.field input, .field textarea {
    width: 100%; padding: 0.6rem 0.7rem; font: inherit; color: var(--color-text);
    background: var(--color-white); border: 1px solid var(--color-border);
    border-radius: 6px;
}
.field input:focus, .field textarea:focus {
    outline: 2px solid var(--color-primary-bright); outline-offset: 1px; border-color: var(--color-primary);
}
.field__error { display: block; color: var(--color-secondary-darker); font-size: 0.85rem; margin-top: 0.3rem; }

.alert { padding: 0.9rem 1.1rem; border-radius: 6px; margin-bottom: 1.25rem; }
.alert--success { background: var(--color-secondary-tint); border: 1px solid var(--color-secondary-light); }
.alert--error { background: var(--color-error-tint); border: 1px solid var(--color-error); color: var(--color-error); }

/* ---------- Footer ---------- */
.site-footer { background: var(--color-primary-dark); color: var(--color-white); margin-top: 3rem; }
.site-footer__inner {
    display: flex; justify-content: space-between; gap: 2rem;
    flex-wrap: wrap; padding: 2.5rem 0 1.5rem;
}
.site-footer__brand { display: flex; align-items: center; gap: 0.6rem; }
.site-footer__org { margin: 0; font-weight: 600; }
.site-footer__list {
    display: flex; gap: 1.25rem; list-style: none; margin: 0; padding: 0; flex-wrap: wrap;
}
.site-footer__list a { color: var(--color-secondary-tint); }
.site-footer__list a:hover { color: var(--color-white); }
.site-footer__legal {
    border-top: 1px solid rgba(255, 255, 255, 0.15); padding-top: 1rem; padding-bottom: 1.5rem;
    color: var(--color-secondary-tint); font-size: 0.9rem;
}

/* ---------- Responsive nav ---------- */
@media (max-width: 768px) {
    .site-nav__toggle {
        display: inline-flex; align-items: center; justify-content: center;
        width: 42px; height: 42px; background: transparent; border: 0; cursor: pointer;
    }
    .site-nav__toggle-bar,
    .site-nav__toggle-bar::before,
    .site-nav__toggle-bar::after {
        display: block; width: 22px; height: 2px; background: var(--color-white);
        position: relative; content: "";
    }
    .site-nav__toggle-bar::before { position: absolute; top: -7px; content: ""; }
    .site-nav__toggle-bar::after { position: absolute; top: 7px; content: ""; }
    .site-nav__list {
        display: none; flex-direction: column; width: 100%; gap: 0.75rem;
        padding: 0.75rem 0;
    }
    .site-nav[data-open="true"] .site-nav__list { display: flex; }
    .site-nav { margin-left: 0; order: 3; width: 100%; }
    .site-header__inner { justify-content: space-between; }
}