.rsvp-section {
    position: relative;
    isolation: isolate;
    min-height: 100svh;
    padding: clamp(5rem, 10vw, 8rem) 1.25rem;
    overflow: hidden;
    background:
        radial-gradient(circle at 50% 0, rgba(200, 162, 71, 0.13), transparent 32rem),
        linear-gradient(145deg, var(--olive-800), var(--olive-700));
}

.rsvp-section::before,
.rsvp-section::after {
    content: "";
    position: absolute;
    border: 1px solid rgba(248, 245, 238, 0.08);
    border-radius: 50%;
}

.rsvp-section::before {
    width: 28rem;
    height: 28rem;
    top: -15rem;
    left: -12rem;
}

.rsvp-section::after {
    width: 22rem;
    height: 22rem;
    right: -10rem;
    bottom: -12rem;
}

.rsvp-section__inner {
    position: relative;
    z-index: 1;
    width: min(100%, 52rem);
    margin-inline: auto;
}

.rsvp-section__header {
    margin-bottom: clamp(2.5rem, 6vw, 4rem);
    text-align: center;
}

.rsvp-section__eyebrow {
    color: var(--gold-300);
    font-family: var(--font-body);
    font-size: 0.66rem;
    font-weight: 600;
    letter-spacing: 0.23em;
    text-transform: uppercase;
}

.rsvp-section__title {
    margin: 0.65rem 0 0;
    color: var(--ivory-50);
    font-family: var(--font-script);
    font-size: clamp(3.8rem, 10vw, 6.5rem);
    font-weight: 400;
    line-height: 0.95;
}

.rsvp-section__recipient {
    margin: 1rem 0 0;
    color: rgba(248, 245, 238, 0.7);
    font-family: var(--font-heading);
    font-size: clamp(1.15rem, 2.5vw, 1.45rem);
    font-style: italic;
}

.rsvp-card {
    padding: clamp(1.5rem, 5vw, 3.5rem);
    border: 1px solid rgba(200, 162, 71, 0.34);
    border-radius: var(--radius-large);
    background: var(--ivory-50);
    box-shadow: 0 2rem 5rem rgba(24, 29, 20, 0.35);
}

.rsvp-form {
    display: grid;
    gap: 2rem;
}

.rsvp-form__fieldset {
    margin: 0;
    padding: 0;
    border: 0;
}

.rsvp-form__fieldset legend,
.rsvp-form__field > span {
    display: block;
    margin-bottom: 0.85rem;
    color: var(--olive-800);
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 600;
}

.rsvp-form__field > span i {
    color: var(--neutral-500);
    font-size: 0.85em;
    font-weight: 400;
}

.rsvp-choice-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.rsvp-choice {
    position: relative;
    display: flex;
    min-height: 7rem;
    padding: 1.15rem;
    align-items: center;
    gap: 0.85rem;
    border: 1px solid var(--ivory-400);
    border-radius: var(--radius-medium);
    cursor: pointer;
    transition:
        border-color var(--duration-fast) ease,
        background var(--duration-fast) ease,
        transform var(--duration-fast) ease;
}

.rsvp-choice:has(input:checked) {
    border-color: var(--gold-500);
    background: rgba(243, 234, 212, 0.48);
    transform: translateY(-0.15rem);
}

.rsvp-choice input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.rsvp-choice__mark {
    display: grid;
    width: 2.25rem;
    height: 2.25rem;
    flex: 0 0 auto;
    border: 1px solid var(--sage-300);
    border-radius: 50%;
    place-items: center;
    color: var(--olive-600);
    font-family: var(--font-heading);
    font-size: 1.15rem;
}

.rsvp-choice:has(input:checked) .rsvp-choice__mark {
    border-color: var(--olive-600);
    color: var(--ivory-50);
    background: var(--olive-600);
}

.rsvp-choice strong,
.rsvp-choice small {
    display: block;
}

.rsvp-choice strong {
    color: var(--olive-800);
    font-family: var(--font-heading);
    font-size: 1.05rem;
}

.rsvp-choice small {
    margin-top: 0.25rem;
    color: var(--neutral-500);
    font-family: var(--font-body);
    font-size: 0.58rem;
    line-height: 1.5;
}

.rsvp-form__attendance-details {
    display: grid;
    gap: 1.75rem;
    padding: 1.5rem;
    border: 1px solid rgba(116, 132, 90, 0.18);
    border-radius: var(--radius-medium);
    background: var(--sage-100);
}

.rsvp-form__attendance-details[hidden] {
    display: none !important;
}

.rsvp-guest-list {
    display: grid;
    gap: 0.7rem;
}

.rsvp-guest {
    display: flex;
    padding: 0.75rem 0.85rem;
    align-items: center;
    gap: 0.75rem;
    border-radius: var(--radius-small);
    cursor: pointer;
    color: var(--neutral-700);
    font-family: var(--font-body);
    font-size: 0.78rem;
    background: rgba(255, 254, 251, 0.72);
}

.rsvp-guest input {
    position: absolute;
    opacity: 0;
}

.rsvp-guest > span {
    display: grid;
    width: 1.25rem;
    height: 1.25rem;
    flex: 0 0 auto;
    border: 1px solid var(--sage-500);
    border-radius: 0.25rem;
    place-items: center;
}

.rsvp-guest input:checked + span {
    border-color: var(--olive-600);
    background: var(--olive-600);
}

.rsvp-guest input:checked + span::after {
    content: "✓";
    color: var(--ivory-50);
    font-size: 0.75rem;
}

.rsvp-form__field {
    display: block;
}

.rsvp-form__field select,
.rsvp-form__field textarea {
    width: 100%;
    border: 1px solid var(--ivory-400);
    border-radius: var(--radius-small);
    color: var(--neutral-700);
    font-family: var(--font-body);
    font-size: 0.8rem;
    background: var(--neutral-50);
    outline: none;
}

.rsvp-form__field select {
    height: 3.1rem;
    padding-inline: 0.85rem;
}

.rsvp-form__field textarea {
    min-height: 7rem;
    padding: 0.9rem;
    resize: vertical;
}

.rsvp-form__field select:focus,
.rsvp-form__field textarea:focus {
    border-color: var(--gold-500);
    box-shadow: 0 0 0 3px rgba(200, 162, 71, 0.13);
}

.rsvp-form__field small {
    display: block;
    margin-top: 0.45rem;
    color: var(--neutral-500);
    font-family: var(--font-body);
    font-size: 0.58rem;
}

.rsvp-form__submit {
    display: inline-flex;
    min-height: 3.4rem;
    padding: 0.85rem 1.5rem;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    border: 0;
    border-radius: var(--radius-pill);
    cursor: pointer;
    color: var(--ivory-50);
    font-family: var(--font-body);
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    background: var(--olive-700);
}

.rsvp-form__notice,
.rsvp-form__error {
    margin: 0;
    font-family: var(--font-body);
    font-size: 0.62rem;
    line-height: 1.6;
    text-align: center;
}

.rsvp-form__notice {
    color: var(--neutral-500);
}

.rsvp-form__error {
    padding: 0.7rem 0.9rem;
    border-radius: var(--radius-small);
    color: #7a3d34;
    background: #f8e8e4;
}

.rsvp-form__error:empty {
    display: none;
}

.rsvp-form__error.validation-summary-valid {
    display: none;
}

.rsvp-form__error.validation-summary-errors {
    display: block;
}

.rsvp-result {
    padding-block: clamp(1rem, 4vw, 2rem);
    text-align: center;
}

.rsvp-result__seal {
    display: grid;
    width: 5rem;
    height: 5rem;
    margin: 0 auto 1.5rem;
    border: 1px solid var(--gold-500);
    border-radius: 50%;
    place-items: center;
    color: var(--olive-700);
    font-family: var(--font-heading);
    font-size: 2rem;
    background: var(--gold-100);
}

.rsvp-result__eyebrow {
    margin: 0;
    color: var(--olive-600);
    font-family: var(--font-body);
    font-size: 0.65rem;
    font-weight: 600;
    letter-spacing: 0.18em;
    text-transform: uppercase;
}

.rsvp-result__title {
    margin: 0.75rem 0 0;
    color: var(--olive-800);
    font-family: var(--font-heading);
    font-size: clamp(2rem, 5vw, 3.2rem);
    font-weight: 500;
    line-height: 1;
}

.rsvp-result__message {
    margin: 1.25rem auto 0;
    max-width: 30rem;
    color: var(--neutral-700);
    font-family: var(--font-heading);
    font-size: 1.1rem;
    line-height: 1.6;
}

.rsvp-result__locked {
    margin: 1.75rem 0 0;
    color: var(--neutral-500);
    font-family: var(--font-body);
    font-size: 0.6rem;
    letter-spacing: 0.07em;
    line-height: 1.6;
    text-transform: uppercase;
}

@media (max-width: 36rem) {
    .rsvp-choice-grid {
        grid-template-columns: 1fr;
    }

    .rsvp-choice {
        min-height: 5.75rem;
    }

    .rsvp-card {
        padding: 1.25rem;
    }
}