/* ==========================================================
   footer.css - site footer + back-to-top button
   Colours come from the variables in style.css.
   ========================================================== */
.site-footer { background: var(--primary-dark); color: #d5e4dc; border-top: 5px solid var(--secondary-color); font-size: .95rem; }

.footer-main { padding: 56px 0 40px; }
.footer-grid { display: grid; gap: 36px; grid-template-columns: 1fr; }

.footer-col h2 {
    position: relative;
    margin: 0 0 18px;
    padding-bottom: 10px;
    font-family: var(--font-heading);
    font-size: 1.05rem;
    color: var(--white);
}
.footer-col h2::after { content: ""; position: absolute; left: 0; bottom: 0; width: 36px; height: 3px; border-radius: 2px; background: var(--secondary-color); }
.footer-col ul { list-style: none; margin: 0; padding: 0; }
.footer-col a { color: inherit; text-decoration: none; transition: color var(--transition), padding-left var(--transition); }
.footer-col a:hover { color: var(--secondary-color); }
.footer-col a:focus-visible, .footer-bottom a:focus-visible, .back-to-top:focus-visible { outline: 3px solid var(--secondary-color); outline-offset: 3px; border-radius: 4px; }

/* link lists */
.footer-col nav ul li, .footer-col > ul:not(.footer-social) > li { margin-bottom: 4px; }
nav.footer-col li a { display: inline-block; padding: 5px 0; }
nav.footer-col li a:hover { padding-left: 6px; }

/* about column */
.footer-logo { display: inline-block; margin-bottom: 16px; padding: 10px 14px; background: var(--white); border-radius: var(--radius); }
.footer-logo img { display: block; height: 52px; width: auto; }
.footer-about p { margin: 0 0 18px; max-width: 340px; line-height: 1.7; }

.footer-social { display: flex; flex-wrap: wrap; gap: 8px; }
.footer-social a {
    display: inline-flex; align-items: center; justify-content: center;
    width: 40px; height: 40px; border-radius: 50%;
    background: rgba(255, 255, 255, .1); color: var(--white);
    transition: background var(--transition), color var(--transition), transform var(--transition);
}
.footer-social a:hover { background: var(--secondary-color); color: #1f2937; transform: translateY(-3px); }

/* contact column */
.footer-contact li { display: flex; gap: 12px; align-items: flex-start; padding: 6px 0; line-height: 1.5; overflow-wrap: anywhere; }
.footer-contact li i { flex-shrink: 0; width: 18px; margin-top: 3px; text-align: center; color: var(--secondary-color); }
.footer-ussd { margin: 16px 0 0; padding: 12px 14px; background: rgba(255, 255, 255, .08); border-left: 4px solid var(--secondary-color); border-radius: 6px; }
.footer-ussd strong { color: var(--secondary-color); font-family: var(--font-heading); }

/* bottom bar */
.footer-bottom { background: rgba(0, 0, 0, .25); font-size: .85rem; }
.footer-bottom-inner { display: flex; flex-direction: column; gap: 10px; align-items: center; padding-block: 16px; text-align: center; }
.footer-bottom p { margin: 0; }
.footer-bottom ul { display: flex; flex-wrap: wrap; justify-content: center; gap: 4px 20px; margin: 0; padding: 0; list-style: none; }
.footer-bottom a { color: inherit; text-decoration: none; }
.footer-bottom a:hover { color: var(--secondary-color); text-decoration: underline; }

/* back to top */
.back-to-top {
    position: fixed; right: 16px; bottom: 16px; z-index: 900;
    width: 46px; height: 46px; border: 0; border-radius: 50%;
    background: var(--secondary-color); color: #1f2937; font-size: 1rem; cursor: pointer;
    box-shadow: 0 4px 12px rgba(0, 0, 0, .3);
    opacity: 0; transform: translateY(12px); transition: opacity .25s ease, transform .25s ease, background var(--transition);
}
.back-to-top.show { opacity: 1; transform: none; }
.back-to-top:hover { background: var(--secondary-dark); }

@media (min-width: 640px)  { .footer-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 992px)  {
    .footer-grid { grid-template-columns: 1.4fr 1fr 1fr 1.3fr; gap: 48px; }
    .footer-bottom-inner { flex-direction: row; justify-content: space-between; text-align: left; }
}