/* ==========================================================================
   COMPONENTS: buttons, cards, chips, form controls, accordion
   ========================================================================== */

/* ---- Buttons (min touch target 44px) ---- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: .5rem; min-height: 46px; padding: .7rem 1.4rem; border: 2px solid transparent; border-radius: 99px; font-weight: 700; font-size: 1rem; line-height: 1.2; text-decoration: none; text-align: center; transition: background .15s, color .15s, border-color .15s, transform .1s, box-shadow .15s; }
.btn:active { transform: translateY(1px); }
.btn--sm { min-height: 44px; padding: .5rem 1.1rem; font-size: .95rem; }
.btn--lg { min-height: 54px; padding: .85rem 1.8rem; font-size: 1.05rem; }
.btn--block { display: flex; width: 100%; }

.btn--green { background: var(--green-btn); color: #fff; box-shadow: 0 4px 14px rgba(63, 132, 25, .35); }
.btn--green:hover { background: var(--green-btn-h); color: #fff; }
.btn--blue { background: var(--blue); color: #fff; }
.btn--blue:hover { background: var(--blue-700); color: #fff; }
.btn--ghost { background: transparent; color: var(--blue); border-color: var(--blue); }
.btn--ghost:hover { background: var(--blue); color: #fff; }
.btn--white { background: #fff; color: var(--blue); }
.btn--white:hover { background: var(--blue-50); color: var(--blue); }

.header__donate span { display: none; }
.header__donate { padding-inline: .9rem; }
@media (min-width: 340px) { .header__donate span { display: inline; } }

/* ---- Card ---- */
.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow-sm); }

/* ---- Form controls (16px font prevents iOS zoom) ---- */
.field { margin-bottom: 1rem; }
.field__label { display: block; margin-bottom: .35rem; font-size: .9rem; font-weight: 600; color: var(--ink); }
.input { width: 100%; min-height: 48px; padding: .65rem .9rem; font-size: 1rem; background: #fff; border: 2px solid var(--line); border-radius: 12px; transition: border-color .15s, box-shadow .15s; }
.input:focus { outline: none; border-color: var(--blue-700); box-shadow: 0 0 0 4px rgba(10, 76, 151, .15); }
.input-group { display: flex; align-items: stretch; }
.input-group__pre { display: grid; place-items: center; padding: 0 .9rem; font-weight: 700; color: var(--blue); background: var(--blue-50); border: 2px solid var(--line); border-right: 0; border-radius: 12px 0 0 12px; }
.input-group .input { border-radius: 0 12px 12px 0; }

/* Segmented control (One-time / Monthly) */
.seg { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; padding: 4px; margin-bottom: 1rem; background: var(--blue-50); border-radius: 99px; }
.seg__opt { position: relative; display: block; }
.seg__opt input { position: absolute; opacity: 0; inset: 0; cursor: pointer; }
.seg__opt span { display: block; padding: .6rem .5rem; text-align: center; font-weight: 700; font-size: .95rem; color: var(--muted); border-radius: 99px; transition: background .15s, color .15s; }
.seg__opt input:checked + span { background: var(--blue); color: #fff; box-shadow: var(--shadow-sm); }
.seg__opt input:focus-visible + span { outline: 3px solid var(--blue-700); outline-offset: 2px; }

/* Amount chips */
.chips { display: grid; grid-template-columns: repeat(2, 1fr); gap: .6rem; margin-bottom: 1rem; }
@media (min-width: 400px) { .chips { grid-template-columns: repeat(4, 1fr); } }
.chip { position: relative; display: block; }
.chip input { position: absolute; opacity: 0; inset: 0; cursor: pointer; }
.chip span { display: grid; place-items: center; min-height: 48px; font-weight: 700; color: var(--blue); background: #fff; border: 2px solid var(--line); border-radius: 12px; transition: border-color .15s, background .15s, color .15s; }
.chip:hover span { border-color: var(--blue-700); }
.chip input:checked + span { background: var(--green-btn); border-color: var(--green-btn); color: #fff; }
.chip input:focus-visible + span { outline: 3px solid var(--blue-700); outline-offset: 2px; }

/* ---- FAQ accordion (native <details>) ---- */
.faq__item { border: 1px solid var(--line); border-radius: var(--radius-sm); background: #fff; margin-bottom: .75rem; }
.faq__item summary { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1rem 1.1rem; font-weight: 700; color: var(--blue); list-style: none; min-height: 52px; }
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary .i { transition: transform .2s; color: var(--green-text); }
.faq__item[open] summary .i { transform: rotate(180deg); }
.faq__item[open] { border-color: var(--blue-100); box-shadow: var(--shadow-sm); }
.faq__item p { margin: 0; padding: 0 1.1rem 1.1rem; color: var(--muted); }