@charset "utf-8";

/*
  Form UX notes (conversion-oriented):
  - Single column + label above field (Baymard: lowest abandonment)
  - 48px min touch targets (mobile tap accuracy)
  - Visible field borders (field recognition / scan speed)
  - Selected-state for radio/checkbox (reduces mis-clicks)
  - CTA hover darkens instead of fading (avoid "disabled" look)
*/

/* -- form#mail_form, dl, dt, dd -------------------------------------------------------------------------------- */

form#mail_form * {
  box-sizing: border-box;
}

form#mail_form {
  --form-accent: #ff5c00;
  --form-accent-dark: #e65300;
  --form-border: #d4d4d4;
  --form-border-focus: #ff5c00;
  --form-bg: #f7f7f7;
  --form-bg-hover: #efefef;
  --form-error: #d32f2f;
  --form-error-bg: #fff5f5;
  --form-radius: 8px;
  --form-touch-min: 48px;

  width: 100%;
  max-width: 640px;
  margin: 0 auto;
  padding: 32px 0 48px;
  background: #ffffff;
  border-radius: 7px;
  line-height: 1.6;
}

form#mail_form dl {
  width: 90%;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 8px;
  padding-bottom: 20px;
  border-bottom: 1px solid #eeeeee;
}

form#mail_form dl:last-of-type {
  border-bottom: none;
}

form#mail_form dl:after,
form#mail_form dl dt:after {
  content: ".";
  display: block;
  height: 0;
  clear: both;
  visibility: hidden;
}

form#mail_form dl dt {
  width: 100%;
  padding-top: 4px;
  text-align: left;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 1.5rem;
  font-weight: 700;
  color: #333333;
  letter-spacing: 0.02em;
}

form#mail_form dl dd {
  width: 100%;
}

form#mail_form dl dt i {
  position: relative;
  top: -1px;
}

/* -- span.required, span.optional -------------------------------------------------------------------------------- */

form#mail_form dl dt span.required,
form#mail_form dl dt span.optional {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 22px;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1.4;
  white-space: nowrap;
}

form#mail_form dl dt span.required {
  color: #c62828;
  background: #ffebee;
  border: 1px solid #ffcdd2;
}

form#mail_form dl dt span.optional {
  color: #546e7a;
  background: #eceff1;
  border: 1px solid #cfd8dc;
}

/* -- error message -------------------------------------------------------------------------------- */

form#mail_form dl dd span.error_blank,
form#mail_form dl dd span.error_format,
form#mail_form dl dd span.error_match {
  display: block;
  margin-top: 8px;
  padding: 8px 12px;
  border-radius: 6px;
  background: var(--form-error-bg);
  color: var(--form-error);
  font-size: 1.3rem;
  font-weight: 500;
  line-height: 1.5;
}

form#mail_form dl dd span.error_blank:empty,
form#mail_form dl dd span.error_format:empty,
form#mail_form dl dd span.error_match:empty {
  display: none;
  margin: 0;
  padding: 0;
}

form#mail_form dl dd:has(span.error_blank:not(:empty)) input,
form#mail_form dl dd:has(span.error_blank:not(:empty)) select,
form#mail_form dl dd:has(span.error_blank:not(:empty)) textarea,
form#mail_form dl dd:has(span.error_format:not(:empty)) input,
form#mail_form dl dd:has(span.error_format:not(:empty)) select,
form#mail_form dl dd:has(span.error_format:not(:empty)) textarea,
form#mail_form dl dd:has(span.error_match:not(:empty)) input,
form#mail_form dl dd:has(span.error_match:not(:empty)) select,
form#mail_form dl dd:has(span.error_match:not(:empty)) textarea {
  border-color: var(--form-error);
  background: var(--form-error-bg);
}

/* -- loading -------------------------------------------------------------------------------- */

div.loading-layer {
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.7);
  position: fixed;
  left: 0;
  top: 0;
  z-index: 10000;
}

span.loading {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  border-top: 5px solid rgba(255, 255, 255, 0.2);
  border-right: 5px solid rgba(255, 255, 255, 0.2);
  border-bottom: 5px solid rgba(255, 255, 255, 0.2);
  border-left: 5px solid #ffffff;
  transform: translateZ(0);
  animation: load-circle 1s linear infinite;
  position: absolute;
  top: 50%;
  left: 50%;
  margin-top: -30px;
  margin-left: -30px;
}

@keyframes load-circle {
  0% {
    transform: rotate(0deg);
  }

  100% {
    transform: rotate(360deg);
  }
}

/* -- input, select, textarea -------------------------------------------------------------------------------- */

form#mail_form input[type="text"],
form#mail_form input[type="email"],
form#mail_form input[type="tel"],
form#mail_form textarea,
form#mail_form select {
  width: 100%;
  min-height: var(--form-touch-min);
  padding: 12px 16px;
  border: 1px solid var(--form-border);
  border-radius: var(--form-radius);
  background: var(--form-bg);
  font-size: 1.6rem;
  font-family: inherit;
  line-height: 1.5;
  color: #333333;
  transition:
    border-color 0.2s ease,
    background-color 0.2s ease,
    box-shadow 0.2s ease;
  -webkit-appearance: none;
  appearance: none;
}

form#mail_form input[type="text"]::placeholder,
form#mail_form input[type="email"]::placeholder,
form#mail_form input[type="tel"]::placeholder,
form#mail_form textarea::placeholder {
  color: #9e9e9e;
}

form#mail_form input[type="text"]:hover,
form#mail_form input[type="email"]:hover,
form#mail_form input[type="tel"]:hover,
form#mail_form textarea:hover,
form#mail_form select:hover {
  border-color: #bdbdbd;
  background: #ffffff;
}

form#mail_form input[type="text"]:focus,
form#mail_form input[type="email"]:focus,
form#mail_form input[type="tel"]:focus,
form#mail_form textarea:focus,
form#mail_form select:focus {
  outline: none;
  border-color: var(--form-border-focus);
  background: #ffffff;
  box-shadow: 0 0 0 3px rgba(255, 92, 0, 0.18);
}

form#mail_form textarea {
  display: block;
  min-height: 160px;
  height: 200px;
  resize: vertical;
}

form#mail_form select {
  padding-right: 44px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23666' d='M6 8 0 0h12z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  background-size: 12px 8px;
  cursor: pointer;
}

form#mail_form ul li input[type="radio"],
form#mail_form ul li input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
  margin: 0;
}

/* -- ul, li -------------------------------------------------------------------------------- */

form#mail_form ul {
  list-style-type: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

/* 2択（性別・恋愛対象など）は横並びでスクロール量を削減 */
form#mail_form ul:has(> li:nth-child(2):last-child) {
  flex-direction: row;
  flex-wrap: wrap;
}

form#mail_form ul:has(> li:nth-child(2):last-child) li {
  flex: 1 1 calc(50% - 4px);
  min-width: 120px;
}

form#mail_form ul li label {
  position: relative;
  display: flex;
  align-items: center;
  min-height: var(--form-touch-min);
  margin: 0;
  padding: 12px 16px 12px 44px;
  border: 1px solid var(--form-border);
  border-radius: var(--form-radius);
  background: var(--form-bg);
  font-size: 1.5rem;
  line-height: 1.4;
  cursor: pointer;
  transition:
    border-color 0.2s ease,
    background-color 0.2s ease,
    box-shadow 0.2s ease;
}

form#mail_form ul li label::before {
  content: "";
  position: absolute;
  left: 16px;
  top: 50%;
  width: 18px;
  height: 18px;
  border: 2px solid #bdbdbd;
  background: #ffffff;
  transform: translateY(-50%);
  transition:
    border-color 0.2s ease,
    background-color 0.2s ease;
}

form#mail_form ul li input[type="radio"] + label::before,
form#mail_form ul li label:has(input[type="radio"])::before {
  border-radius: 50%;
}

form#mail_form ul li input[type="checkbox"] + label::before,
form#mail_form ul li label:has(input[type="checkbox"])::before {
  border-radius: 4px;
}

form#mail_form ul li label:hover {
  border-color: #bdbdbd;
  background: var(--form-bg-hover);
}

form#mail_form ul li label:has(input:checked) {
  border-color: var(--form-accent);
  background: #fff8f3;
  box-shadow: 0 0 0 1px rgba(255, 92, 0, 0.12);
}

form#mail_form ul li label:has(input:checked)::before {
  border-color: var(--form-accent);
  background: var(--form-accent);
}

form#mail_form ul li label:has(input[type="radio"]:checked)::after {
  content: "";
  position: absolute;
  left: 21px;
  top: 50%;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #ffffff;
  transform: translateY(-50%);
}

form#mail_form ul li label:has(input[type="checkbox"]:checked)::after {
  content: "";
  position: absolute;
  left: 20px;
  top: 50%;
  width: 6px;
  height: 10px;
  border-right: 2px solid #ffffff;
  border-bottom: 2px solid #ffffff;
  transform: translateY(-58%) rotate(45deg);
}

/* -- input design -------------------------------------------------------------------------------- */

form#mail_form input[name="postal"] {
  width: min(100%, 220px);
  margin-right: 8px;
}

form#mail_form input[name="postal"] + a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--form-touch-min);
  padding: 12px 16px;
  border: 1px solid #bdbdbd;
  border-radius: var(--form-radius);
  background: #ffffff;
  font-size: 1.4rem;
  line-height: 1.4;
  color: #555555;
  text-decoration: none;
  vertical-align: top;
  transition:
    border-color 0.2s ease,
    color 0.2s ease,
    background-color 0.2s ease;
}

form#mail_form input[name="postal"] + a:hover {
  border-color: var(--form-accent);
  color: var(--form-accent);
  background: #fff8f3;
  opacity: 1;
}

/* -- button -------------------------------------------------------------------------------- */

form#mail_form p#form_submit {
  width: 90%;
  margin: 0 auto;
  padding: 32px 0 8px;
}

form#mail_form input[type="button"] {
  display: block;
  width: 100%;
  max-width: 382px;
  min-height: 66px;
  margin: 0 auto;
  padding: 16px 24px;
  border: none;
  border-radius: 16px;
  background: var(--form-accent);
  box-shadow: 0 4px 16px rgba(255, 92, 0, 0.35);
  font-size: 2rem;
  font-weight: 700;
  color: #ffffff;
  text-align: center;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition:
    background-color 0.2s ease,
    box-shadow 0.2s ease,
    transform 0.15s ease;
}

form#mail_form input[type="button"]:hover {
  background: var(--form-accent-dark);
  box-shadow: 0 6px 20px rgba(255, 92, 0, 0.4);
  opacity: 1;
}

form#mail_form input[type="button"]:active {
  transform: translateY(1px);
  box-shadow: 0 2px 8px rgba(255, 92, 0, 0.3);
}

form#mail_form input[type="button"]:focus-visible {
  outline: none;
  box-shadow:
    0 4px 16px rgba(255, 92, 0, 0.35),
    0 0 0 3px rgba(255, 92, 0, 0.25);
}

/* -- responsive ----------------------------------------------------------------------------------------------------------------------- */

@media screen and (max-width: 768px) {
  form#mail_form {
    width: 100%;
    padding: 24px 0 40px;
    font-size: 14px;
  }

  form#mail_form dl {
    gap: 6px;
    width: 100%;
    padding-bottom: 16px;
  }

  form#mail_form dl dt {
    gap: 6px;
    padding-top: 0;
    font-size: 14px;
  }

  form#mail_form dl dt i {
    position: static;
    padding: 0;
  }

  form#mail_form input[type="text"],
  form#mail_form input[type="email"],
  form#mail_form input[type="tel"],
  form#mail_form textarea,
  form#mail_form select {
    font-size: 14px;
  }

  form#mail_form ul:has(> li:nth-child(2):last-child) li {
    flex: 1 1 100%;
  }

  form#mail_form input[name="postal"] {
    width: 100%;
    margin-right: 0;
    margin-bottom: 8px;
  }

  form#mail_form input[name="postal"] + a {
    width: 100%;
  }

  form#mail_form p#form_submit {
    padding: 24px 0 8px;
  }

  form#mail_form input[type="button"] {
    max-width: 100%;
    min-height: 56px;
    font-size: 1.8rem;
  }
}