/* =========================================
   RSVP Section
   Scope: RSVP section only
========================================= */
.rsvp-section {
  --rsvp-accent: #76572b;
  --rsvp-accent-hover: #634720;
  --rsvp-accent-active: #4d3518;
  --rsvp-error: #a61b1b;
  --rsvp-success: #245c3b;

  padding-block: var(--section-space-y);
  padding-inline: var(--container-padding-x);
  background: linear-gradient(180deg, #f6f1e8, #e8dcc9);
}

.rsvp-section .section-header {
  width: min(100%, 40rem);
  margin-inline: auto;
  margin-bottom: 1.5rem;
  text-align: center;
}

.rsvp-section .section-title {
  font-size: clamp(1.5rem, 5vw, 2rem);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-heading);
  color: var(--color-heading);
}

.rsvp-form {
  width: min(100%, 37.5rem);
  margin-inline: auto;
  display: grid;
  gap: 1rem;
  padding: 1.25rem;
  border: var(--border-width-thin) var(--border-style-default) var(--color-border);
  border-radius: var(--radius-lg);
  background-color: var(--bg-surface);
  box-shadow: var(--shadow-sm);
}

@media (max-width: 30rem) {
  .rsvp-form {
    gap: 0.875rem;
    padding: 1rem;
  }

  .attendance-options {
    gap: 0.5rem;
  }

  .rsvp-form .submit-button {
    width: 100%;
  }
}

.rsvp-intro {
  font-size: 0.9375rem;
  line-height: 1.6;
  text-align: center;
  color: var(--color-text-muted);
}

.rsvp-form .form-group,
.attendance-group {
  display: grid;
  gap: 0.5rem;
}

.attendance-group {
  min-width: 0;
  padding: 0;
  border: 0;
}

.rsvp-form label,
.attendance-group legend {
  font-size: 0.875rem;
  font-weight: var(--font-weight-medium);
  line-height: 1.4;
  color: var(--color-heading);
}

.attendance-group legend {
  padding: 0;
}

.attendance-options {
  display: grid;
  gap: 0.625rem;
}

.attendance-option {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-height: 3rem;
  padding: 0.75rem 0.875rem;
  border: var(--border-width-thin) var(--border-style-default) var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--bg-page);
  color: var(--color-text);
  cursor: pointer;
  transition: border-color var(--duration-fast) ease, background-color var(--duration-fast) ease, box-shadow var(--duration-fast) ease;
}

.attendance-option input {
  flex: 0 0 auto;
  width: 1.125rem;
  height: 1.125rem;
  margin: 0;
  accent-color: var(--rsvp-accent);
}

.attendance-option input:checked + span {
  font-weight: var(--font-weight-semibold);
  color: var(--color-heading);
}

.attendance-option:focus-within,
.attendance-option:has(input:checked) {
  border-color: var(--rsvp-accent);
  background-color: color-mix(in srgb, var(--rsvp-accent) 8%, var(--bg-page));
}

.attendance-group:has(input[aria-invalid="true"]) .attendance-option {
  border-color: var(--rsvp-error);
}

.rsvp-form input:not([type="radio"]),
.rsvp-form textarea {
  width: 100%;
  min-height: 3rem;
  padding-inline: 0.875rem;
  border: var(--border-width-thin) var(--border-style-default) var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--bg-page);
  font-size: 1rem;
  line-height: 1.5;
  color: var(--color-text);
  transition: border-color var(--duration-fast) ease, box-shadow var(--duration-fast) ease, background-color var(--duration-fast) ease;
}

.rsvp-form textarea {
  min-height: 7rem;
  padding-block: 0.75rem;
  resize: vertical;
}

.rsvp-form input::placeholder,
.rsvp-form textarea::placeholder {
  color: var(--color-text-muted);
}

.rsvp-form input:not([type="radio"]):hover,
.rsvp-form textarea:hover {
  border-color: color-mix(in srgb, var(--color-border) 60%, var(--color-heading));
}

.rsvp-form input:not([type="radio"]):focus,
.rsvp-form textarea:focus {
  outline: none;
  border-color: var(--color-focus);
  box-shadow: 0 0 0 0.1875rem color-mix(in srgb, var(--color-focus) 25%, transparent);
}

.rsvp-form input:disabled,
.rsvp-form textarea:disabled {
  cursor: not-allowed;
  opacity: 0.65;
  background-color: var(--bg-muted);
}

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

.field-optional,
.field-hint {
  font-size: 0.8125rem;
  font-weight: var(--font-weight-regular);
  color: var(--color-text-muted);
}

.field-hint {
  margin-top: -0.25rem;
  text-align: right;
}

.field-error {
  min-height: 1.25rem;
  margin-top: -0.25rem;
  font-size: 0.8125rem;
  font-weight: var(--font-weight-medium);
  line-height: 1.4;
  color: var(--rsvp-error);
}

.rsvp-form .submit-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding-block: 0.75rem;
  padding-inline: 1.5rem;
  border: var(--border-width-thin) var(--border-style-default) transparent;
  border-radius: var(--radius-round);
  background-color: var(--rsvp-accent);
  color: #ffffff;
  font-size: 1rem;
  font-weight: var(--font-weight-semibold);
  line-height: 1.2;
  text-align: center;
  transition: background-color var(--duration-fast) ease, box-shadow var(--duration-fast) ease, transform var(--duration-fast) ease;
}

.rsvp-form .submit-button:hover {
  background-color: var(--rsvp-accent-hover);
}

.rsvp-form .submit-button:focus-visible {
  outline: 0.1875rem solid var(--color-focus);
  outline-offset: 0.1875rem;
  box-shadow: 0 0 0 0.25rem color-mix(in srgb, var(--rsvp-accent) 25%, transparent);
}

.rsvp-form .submit-button:active {
  background-color: var(--rsvp-accent-active);
  transform: translateY(0.0625rem);
}

.rsvp-form .submit-button:disabled,
.rsvp-form .submit-button[aria-disabled="true"] {
  cursor: not-allowed;
  opacity: 0.65;
  transform: none;
}

.rsvp-status {
  padding: 0.75rem 0.875rem;
  border: var(--border-width-thin) var(--border-style-default) currentColor;
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  line-height: 1.5;
}

.rsvp-status[data-state="success"] {
  color: var(--rsvp-success);
  background-color: color-mix(in srgb, var(--rsvp-success) 8%, var(--bg-page));
}

.rsvp-status[data-state="info"] {
  color: var(--color-heading);
  background-color: var(--bg-muted);
}

.rsvp-status[data-state="error"] {
  color: var(--rsvp-error);
  background-color: color-mix(in srgb, var(--rsvp-error) 6%, var(--bg-page));
}

.rsvp-hint {
  font-size: 0.8125rem;
  line-height: 1.5;
  text-align: center;
  color: var(--color-text-muted);
}

.rsvp-thank-you {
  position: fixed;
  z-index: var(--z-toast);
  inset: 0;
  display: grid;
  place-items: center;
  padding: 1.25rem;
  pointer-events: none;
  background: rgba(14, 35, 27, 0.28);
  opacity: 0;
  transition: opacity 250ms ease;
}

.rsvp-thank-you[hidden] {
  display: none;
}

.rsvp-thank-you.is-visible {
  opacity: 1;
}

.rsvp-thank-you-card {
  width: min(100%, 22rem);
  padding: 2rem 1.5rem 1.75rem;
  border: 0.0625rem solid rgba(213, 181, 120, 0.55);
  border-radius: 1.25rem;
  background: #fffdf8;
  box-shadow: 0 1.25rem 3.5rem rgba(5, 16, 10, 0.28);
  text-align: center;
  transform: translateY(0.75rem) scale(0.96);
  transition: transform 360ms cubic-bezier(0.22, 1, 0.36, 1);
}

.rsvp-thank-you.is-visible .rsvp-thank-you-card {
  transform: translateY(0) scale(1);
}

.rsvp-thank-you-icon {
  display: block;
  margin-bottom: 0.625rem;
  color: var(--rsvp-accent);
  font-family: Georgia, serif;
  font-size: 3.5rem;
  line-height: 1;
}

.rsvp-thank-you-kicker {
  margin-bottom: 0.625rem;
  color: var(--rsvp-accent);
  font-size: 0.6875rem;
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.rsvp-thank-you-title {
  color: var(--color-heading);
  font-family: var(--font-family-heading);
  font-size: 1.5rem;
  font-weight: var(--font-weight-semibold);
  line-height: 1.35;
}

.rsvp-thank-you-message {
  margin-top: 0.625rem;
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  line-height: 1.6;
}

@media (min-width: 48rem) {
  .rsvp-section {
    padding-inline: var(--container-padding-x-lg);
  }

  .rsvp-section .section-header {
    margin-bottom: 1.75rem;
  }

  .rsvp-form {
    gap: 1.125rem;
    padding: 1.5rem;
  }

  .attendance-options {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 64rem) {
  .rsvp-section .section-header {
    margin-bottom: 2rem;
  }

  .rsvp-form {
    padding: 1.75rem;
  }
}