/* ==========================================================
   OLDO Corporate Site v0.5 — style.css
   ロゴ + 問い合わせフォーム + 会社情報の最小構成
   ========================================================== */

:root {
  --bg: #F1E8DB;
  --paper: #FFFAF1;
  --ink: #080808;
  --muted: #625C52;
  --line: rgba(8, 8, 8, 0.72);
  --bronze: #8B6B45;
  --dark: #090909;

  --font-sans: "Gotham", -apple-system, BlinkMacSystemFont,
    "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;

  --line-strong: 1.4px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
img { max-width: 100%; display: block; }

html { scroll-behavior: smooth; }

body {
  background: var(--dark);
  color: var(--bg);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 64px 22px;
  background: var(--dark);
}

/* 背景の仮面をうっすらと表示（スクロールでパララックス移動） */
.hero::before {
  content: "";
  position: absolute;
  inset: -55% 0; /* パララックス移動時(50%追従)に端が見えないよう上下に余裕を持たせる */
  background-image: url("../assets/images/mask.jpg");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  opacity: 0.18;
  transform: translate3d(0, var(--para, 0px), 0);
  will-change: transform;
}

/* スマホでは背景写真を約80%に縮小して表示 */
@media (max-width: 767px) {
  .hero::before {
    background-size: auto 80%;
  }
}

.hero-logo {
  position: relative;
  z-index: 1;
  width: min(300px, 64vw);
  animation: fadeSlideUp 0.9s ease 0.15s both;
}

/* ---------- Contact ---------- */
.contact {
  background: var(--paper);
  color: var(--ink);
  padding: 72px 22px 80px;
  display: flex;
  justify-content: center;
}

.contact-box {
  width: 100%;
  max-width: 980px;
}

.eyebrow {
  font-size: 11px;
  letter-spacing: 0.22em;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--muted);
}

.section-heading {
  font-size: 26px;
  line-height: 1.2;
  letter-spacing: 0.02em;
  font-weight: 900;
  margin: 10px 0 18px;
}

.lead {
  font-size: 14px;
  line-height: 2.0;
  letter-spacing: 0.02em;
}

.contact-grid {
  display: grid;
  gap: 56px;
}

.contact-right .contact-form { margin-top: 30px; }

/* ---------- Form ---------- */
.form-field { margin-bottom: 22px; }

.form-field label {
  display: block;
  font-size: 11px;
  letter-spacing: 0.18em;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 8px;
}

.form-field .req {
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--bronze);
  margin-left: 6px;
}

.form-field input,
.form-field textarea {
  width: 100%;
  background: transparent;
  border: var(--line-strong) solid rgba(8, 8, 8, 0.45);
  border-radius: 0;
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.6;
  padding: 12px 14px;
  min-height: 48px;
  transition: border-color 0.2s ease;
  -webkit-appearance: none;
  appearance: none;
}

.form-field textarea { resize: vertical; }

.form-field input:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--ink);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  min-width: 180px;
  padding: 0 18px;
  border: var(--line-strong) solid var(--ink);
  background: var(--ink);
  color: var(--bg);
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease;
}

.btn:hover { background: transparent; color: var(--ink); }

/* ---------- Brand Note（ロゴ下のブランド説明） ---------- */
.brand-note { margin-top: -8px; margin-bottom: 52px; }

.brand-note .brand-name {
  font-size: 18px;
  font-weight: 900;
  letter-spacing: 0.14em;
}

.brand-note .brand-copy {
  font-size: 13px;
  letter-spacing: 0.16em;
  font-weight: 800;
  color: var(--muted);
  margin-top: 5px;
}

.brand-note .brand-text {
  font-size: 15px;
  line-height: 2.0;
  letter-spacing: 0.04em;
  margin-top: 14px;
}

.brand-note .brand-made {
  font-size: 13px;
  letter-spacing: 0.14em;
  font-weight: 700;
  color: var(--muted);
  margin-top: 12px;
}

/* ---------- Company Info ---------- */
.info-logo {
  width: 180px;
  margin-bottom: 36px;
}

.company-info .title {
  font-size: 12px;
  letter-spacing: 0.18em;
  font-weight: 700;
  color: var(--muted);
  margin-bottom: 10px;
}

.company-info .name {
  font-size: 24px;
  font-weight: 900;
  letter-spacing: 0.08em;
  line-height: 1.2;
}

.company-info .name-en {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--muted);
  margin-top: 6px;
}

.company-info .corp {
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 0.1em;
  margin-top: 26px;
}

.company-info .addr {
  font-size: 13px;
  letter-spacing: 0.06em;
  line-height: 1.9;
  margin-top: 10px;
}

.company-info .tel { margin-top: 8px; }

.company-info .tel img {
  height: 14px;
  width: auto;
}

/* ---------- Form: バリデーション / 同意 / 確認画面 ---------- */
.form-error {
  font-size: 11px;
  letter-spacing: 0.04em;
  font-weight: 700;
  color: #A0522D;
  margin-top: 6px;
}

.form-field input.is-invalid,
.form-field textarea.is-invalid {
  border-color: #A0522D;
}

.form-field--consent { margin-top: 26px; }

.form-consent {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  letter-spacing: 0.04em;
  cursor: pointer;
}

.form-consent input {
  width: 18px;
  height: 18px;
  min-height: 0;
  padding: 0;
  border: none;
  flex: 0 0 auto;
  -webkit-appearance: auto;
  appearance: auto;
  accent-color: var(--ink);
  cursor: pointer;
}

.form-consent a {
  color: var(--ink);
  font-weight: 700;
}

.form-status {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  margin-top: 12px;
}

.contact-confirm { margin-top: 30px; }

.confirm-lead {
  font-size: 14px;
  line-height: 2.0;
  letter-spacing: 0.02em;
}

.confirm-list {
  margin-top: 22px;
  border-top: 1px solid rgba(8, 8, 8, 0.45);
}

.confirm-list div {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid rgba(8, 8, 8, 0.25);
}

.confirm-list dt {
  font-size: 11px;
  letter-spacing: 0.14em;
  font-weight: 800;
  color: var(--muted);
  padding-top: 2px;
}

.confirm-list dd {
  font-size: 14px;
  line-height: 1.8;
  white-space: pre-wrap;
  word-break: break-word;
}

.confirm-error { margin-top: 20px; }

.confirm-actions {
  display: flex;
  gap: 12px;
  margin-top: 26px;
  flex-wrap: wrap;
}

.btn.outline {
  background: transparent;
  color: var(--ink);
}

.btn.outline:hover { background: var(--ink); color: var(--bg); }

.btn:disabled {
  opacity: 0.55;
  cursor: default;
  pointer-events: none; /* ホバー時の色変化も無効化 */
}

.btn:disabled:hover {
  background: var(--ink);
  color: var(--bg);
}

/* ---------- Privacy Policy ---------- */
.privacy-page {
  background: var(--paper);
  color: var(--ink);
}

.privacy-header {
  padding: 24px 22px 18px;
  border-bottom: var(--line-strong) solid var(--line);
}

.privacy-logo { width: 96px; }

.privacy-main {
  max-width: 720px;
  margin: 0 auto;
  padding: 56px 22px 72px;
}

.privacy-intro {
  font-size: 14px;
  line-height: 2.0;
  letter-spacing: 0.02em;
  margin-bottom: 8px;
}

.privacy-main section { margin-top: 36px; }

.privacy-main h2 {
  font-size: 16px;
  font-weight: 900;
  letter-spacing: 0.04em;
  margin-bottom: 10px;
}

.privacy-main p,
.privacy-main li {
  font-size: 14px;
  line-height: 2.0;
  letter-spacing: 0.02em;
}

.privacy-main ul {
  padding-left: 1.4em;
  margin-top: 6px;
}

.privacy-company { margin-top: 12px; }

.privacy-date {
  margin-top: 40px;
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.06em;
}

.privacy-back { margin-top: 40px; }

.privacy-back .btn { text-decoration: none; }

.footer-link {
  color: rgba(241, 232, 219, 0.75);
  text-decoration: none;
  border-bottom: 1px solid rgba(241, 232, 219, 0.4);
  padding-bottom: 1px;
}

.footer-link:hover { color: var(--bg); }

/* ---------- Footer ---------- */
footer {
  border-top: 1px solid rgba(241, 232, 219, 0.35);
  padding: 24px 22px 32px;
  background: var(--dark);
}

.footer-meta {
  font-size: 10px;
  letter-spacing: 0.18em;
  line-height: 2.0;
  font-weight: 700;
  text-transform: uppercase;
  color: rgba(241, 232, 219, 0.6);
  text-align: center;
}

@keyframes fadeSlideUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  .hero-logo { animation: none; }
}

/* ---------- PC ---------- */
@media (min-width: 768px) {
  .hero-logo { width: 340px; }


  .contact { padding: 96px 40px 104px; }
  .section-heading { font-size: 30px; }

  /* 会社情報左・フォーム右 */
  .contact-grid {
    grid-template-columns: 320px minmax(0, 1fr);
    gap: 72px;
    align-items: start;
  }

  .contact-right {
    border-left: 1px solid rgba(8, 8, 8, 0.25);
    padding-left: 56px;
  }

  .company-info { padding-top: 6px; }
}