@charset "utf-8";

/* ===== Variables ===== */
:root{
  --color-bg: #ffffff;
  --color-bg-soft: #faf8f4;
  --color-surface: #fcfcfc;
  --color-text-main: #1a3e5c;
  --color-text-sub: #546e7a;
  --color-text-light: #9aa5ad;
  --color-border: #e0e0e0;
  --color-sky-blue: #29b6f6;
  --color-accent: #fbc02d;
  --border-radius-main: 12px;
  --border-radius-sub: 8px;
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --font-main: 'Zen Kaku Gothic New', "Yu Gothic", "游ゴシック", "Hiragino Kaku Gothic ProN", "メイリオ", Meiryo, sans-serif;
}

/* ===== Reset ===== */
*,*::before,*::after{ box-sizing: border-box; }
html,body{ margin:0; padding:0; }
body{
  background: var(--color-bg);
  color: var(--color-text-main);
  font-family: var(--font-main);
  font-size: 15px;
  line-height: 1.7;
  letter-spacing: 0.08em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "palt";
}
img{ max-width:100%; height:auto; }
a{ color: var(--color-sky-blue); }
::selection{ background: rgba(41, 182, 246, 0.3); color: var(--color-text-main); }

/* ===== Section ===== */
.contact-section{
  background: var(--color-bg);
  padding: 100px 40px;
}
.contact-section .inner{
  max-width: 1200px;
  margin: 0 auto;
}
.section-title{
  text-align: center;
  margin-bottom: 80px;
}
.section-title .en{
  font-family: var(--font-main);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-sky-blue);
  margin-bottom: 16px;
  display: block;
  font-style: normal;
}
.section-title h2{
  font-size: 26px;
  font-weight: 400;
  letter-spacing: 0.08em;
  display: inline-block;
  position: relative;
  padding-bottom: 20px;
  color: var(--color-text-main);
  margin: 0;
}
.section-title h2::after{
  content: '';
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 60px;
  height: 1px;
  background: var(--color-sky-blue);
  transform: translateX(-50%);
}
.section-title .lead{
  margin-top: 32px;
  font-size: 13px;
  color: var(--color-text-sub);
  line-height: 2.2;
}

/* ===== Form Card ===== */
.contact-form{
  max-width: 600px;
  margin: 0 auto;
  border: 1px solid var(--color-border);
  padding: 60px;
  border-radius: var(--border-radius-main);
  background: var(--color-surface);
  transition: box-shadow .6s var(--ease-out-expo),
              transform .6s var(--ease-out-expo);
}
.contact-form:hover{
  box-shadow: 0 30px 60px rgba(0,0,0,0.06);
  transform: translateY(-4px);
}

/* エラー */
.red_txt{
  color: #ff3333;
  font-size: 13px;
  margin-bottom: 20px;
  letter-spacing: 0.05em;
}
.red_txt:empty{ display:none; }

/* ===== <table> をフォームグループ風に ===== */
.contact-form .table{
  width: 100%;
  margin: 0;
  border: 0;
  border-collapse: collapse;
}
.contact-form .table tbody,
.contact-form .table tr{
  display: block;
  width: 100%;
}
.contact-form .table tr{
  margin-bottom: 40px;
  position: relative;
}
.contact-form .table tr:last-child{ margin-bottom: 0; }
.contact-form .table th,
.contact-form .table td{
  display: block;
  width: 100%;
  padding: 0;
  background: transparent !important;
  border: 0 !important;
  text-align: left;
}

/* ラベル（薄め・細め） */
.contact-form .table th,
.contact-form .table th *,
.contact-form .table th b,
.contact-form .table th strong,
.contact-form .table th span{
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--color-text-light) !important;
  font-weight: 400 !important;
  font-family: var(--font-main);
}
.contact-form .table th{
  margin-bottom: 16px;
  transition: color .3s, transform .3s var(--ease-out-expo);
}
.contact-form .table th .req{
  color: var(--color-sky-blue) !important;
  margin-left: 4px;
}

/* 入力欄 */
.contact-form input[type=text],
.contact-form input[type=email],
.contact-form input[type=tel],
.contact-form input[type=password],
.contact-form input[type=number],
.contact-form input[type=url],
.contact-form textarea,
.contact-form select{
  width: 100% !important;
  max-width: 100% !important;
  padding: 16px 0;
  border: none;
  border-bottom: 1px solid var(--color-border);
  border-radius: 0;
  font-size: 15px;
  font-family: var(--font-main) !important;
  background: transparent;
  box-shadow: none;
  letter-spacing: 0.05em;
  transition: border-color .4s ease;
  color: var(--color-text-main);
  -webkit-appearance: none;
  appearance: none;
}
.contact-form textarea{
  min-height: 120px;
  resize: vertical;
  line-height: 1.7;
}
.contact-form input:focus,
.contact-form textarea:focus,
.contact-form select:focus{
  outline: none;
  border-color: var(--color-sky-blue);
  box-shadow: none;
}
.contact-form .table tr:focus-within th,
.contact-form .table tr:focus-within th *{
  color: var(--color-sky-blue) !important;
}
.contact-form .table tr:focus-within th{
  transform: translateY(-2px);
}
.contact-form .table tr::after{
  content: '';
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--color-sky-blue);
  transition: all .5s var(--ease-out-expo);
  transform: translateX(-50%);
}
.contact-form .table tr:focus-within::after{ width: 100%; }
.contact-form ::placeholder{
  color: #c4ccd2;
  opacity: 1;
  letter-spacing: 0.05em;
}

/* 確認画面 */
.contact-form--confirm .table tr{
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 16px;
  margin-bottom: 16px;
}
.contact-form--confirm .table tr::after{ display:none; }
.contact-form--confirm .table th,
.contact-form--confirm .table th *{
  font-size: 11px;
  margin-bottom: 6px;
}
.contact-form--confirm .table td{
  font-size: 15px !important;
  color: var(--color-text-main) !important;
  white-space: pre-wrap;
}

/* ===== Buttons ===== */
.button_box{
  clear: both;
  text-align: center;
  margin-top: 48px;
  padding: 0;
}
.button_box--two{
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}
.btn-submit{
  display: block;
  width: 100%;
  background: var(--color-text-main);
  color: #fff;
  padding: 24px;
  border: none;
  border-radius: 50px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.2em;
  cursor: pointer;
  transition: all .5s var(--ease-out-expo);
  position: relative;
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(26, 62, 92, 0.2);
  font-family: var(--font-main);
  text-decoration: none;
  text-align: center;
}
.btn-submit::before{
  content: '';
  position: absolute;
  inset: 0;
  background: var(--color-sky-blue);
  transform: translateX(-100%);
  transition: transform .5s var(--ease-out-expo);
  z-index: 0;
}
.btn-submit > span{
  position: relative;
  z-index: 1;
}
.btn-submit:hover{
  color: #fff;
  transform: translateY(-4px) scale(1.02);
  box-shadow: 0 16px 36px rgba(41, 182, 246, 0.3);
}
.btn-submit:hover::before{ transform: translateX(0); }

.btn-back{
  display: inline-block;
  background: #fff;
  color: var(--color-text-sub);
  padding: 18px 32px;
  border: 1px solid var(--color-border);
  border-radius: 50px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.2em;
  cursor: pointer;
  font-family: var(--font-main);
  transition: all .3s var(--ease-out-expo);
}
.btn-back:hover{
  background: #f5f5f5;
  border-color: #c4ccd2;
}
.button_box--two .btn-submit{
  width: auto;
  min-width: 220px;
}

.btn-submit--inline{
  display: inline-block;
  width: auto;
  min-width: 220px;
  margin-top: 32px;
  padding: 20px 40px;
}

/* 戻るリンク */
.back-link{
  text-align: center;
  margin: 40px auto 0;
  font-size: 12px;
  letter-spacing: 0.2em;
}
.back-link a{
  color: var(--color-text-sub);
  text-decoration: none;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--color-border);
  transition: all .3s;
}
.back-link a:hover{
  color: var(--color-sky-blue);
  border-color: var(--color-sky-blue);
}

/* 完了画面 */
.contact-section--done{
  min-height: 60vh;
  display: flex;
  align-items: center;
}
.completion-card{
  max-width: 600px;
  margin: 0 auto;
  padding: 80px 60px;
  text-align: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-main);
}
.completion-icon{
  width: 80px;
  height: 80px;
  margin: 0 auto 24px;
  border-radius: 50%;
  background: rgba(41, 182, 246, 0.12);
  color: var(--color-sky-blue);
  font-size: 38px;
  line-height: 80px;
  font-weight: bold;
}
.completion-card h2{
  font-size: 22px;
  font-weight: 400;
  margin: 0 0 20px;
  color: var(--color-text-main);
  letter-spacing: 0.1em;
}
.completion-card p{
  color: var(--color-text-sub);
  font-size: 14px;
  line-height: 2.2;
  margin: 0;
}

/* Responsive */
@media (max-width: 768px){
  .contact-section{ padding: 60px 16px; }
  .section-title{ margin-bottom: 48px; }
  .section-title h2{ font-size: 22px; }
  .contact-form{ padding: 32px 24px; }
  .completion-card{ padding: 48px 24px; }
  .button_box--two{ flex-direction: column-reverse; }
  .button_box--two .btn-submit,
  .button_box--two .btn-back{ width: 100%; }
}