/* contact.css — お問い合わせフロー（contact.html / contact_form.html / finish.html）
   index.html の CSS変数トークンと配色をそのまま踏襲した軽量スタイルシート */

:root {
  --bg: #fbfbfd;
  --surface: #ffffff;
  --surface-dim: #f5f5f7;
  --ink: #1d1d1f;
  --ink-soft: #6e6e73;
  --ink-faint: #86868b;
  --line: #d2d2d7;
  --accent: #ff4d34;
  --accent-ink: #d63c22;
  --accent-soft: #ffe4dc;
  --on-accent: #fff8f6;
  --focus: #d63c22;
  --r-sm: 10px; --r-md: 16px; --r-lg: 22px; --r-full: 980px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,.04), 0 1px 1px rgba(0,0,0,.03);
  --shadow-md: 0 20px 48px -22px rgba(0,0,0,.22);
  --ease: cubic-bezier(.16,1,.3,1);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000000; --surface: #1d1d1f; --surface-dim: #000000; --ink: #f5f5f7; --ink-soft: #a1a1a6; --ink-faint: #6e6e73;
    --line: #333336; --accent: #ff6a52; --accent-ink: #ff8a72; --accent-soft: #3a2019; --on-accent: #1b0d09; --focus: #ff6a52;
    --shadow-sm: 0 1px 2px rgba(0,0,0,.4); --shadow-md: 0 24px 60px -24px rgba(0,0,0,.7);
  }
}
:root[data-theme="dark"] {
  --bg: #000000; --surface: #1d1d1f; --surface-dim: #000000; --ink: #f5f5f7; --ink-soft: #a1a1a6; --ink-faint: #6e6e73;
  --line: #333336; --accent: #ff6a52; --accent-ink: #ff8a72; --accent-soft: #3a2019; --on-accent: #1b0d09; --focus: #ff6a52;
  --shadow-sm: 0 1px 2px rgba(0,0,0,.4); --shadow-md: 0 24px 60px -24px rgba(0,0,0,.7);
}
:root[data-theme="light"] {
  --bg: #fbfbfd; --surface: #ffffff; --surface-dim: #f5f5f7; --ink: #1d1d1f; --ink-soft: #6e6e73; --ink-faint: #86868b;
  --line: #d2d2d7; --accent: #ff4d34; --accent-ink: #d63c22; --accent-soft: #ffe4dc; --on-accent: #fff8f6; --focus: #d63c22;
  --shadow-sm: 0 1px 2px rgba(0,0,0,.04), 0 1px 1px rgba(0,0,0,.03);
  --shadow-md: 0 20px 48px -22px rgba(0,0,0,.22);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
html, body { overflow-x: hidden; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic Medium", "Noto Sans JP", "Helvetica Neue", Arial, sans-serif;
  font-feature-settings: "palt" 1;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
img, svg { max-width: 100%; display: block; }
::selection { background: var(--accent-soft); color: var(--accent-ink); }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 3px; }

.wrap { max-width: 640px; margin: 0 auto; padding-left: clamp(20px,4vw,32px); padding-right: clamp(20px,4vw,32px); }

/* nav (index.html と同一) */
header.site { position: sticky; top: 0; z-index: 40; background: color-mix(in srgb, var(--bg) 72%, transparent); backdrop-filter: blur(20px) saturate(180%); -webkit-backdrop-filter: blur(20px) saturate(180%); border-bottom: 1px solid var(--line); }
.navbar { max-width: 1100px; margin: 0 auto; padding: 0 clamp(20px,4vw,32px); height: 52px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; flex: none; }
.brand-mark { width: 25px; height: 25px; flex: none; }
.brand-text { display: flex; flex-direction: column; line-height: 1.2; overflow: hidden; }
.brand-text .primary { font-size: 15px; font-weight: 700; letter-spacing: -0.01em; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; color: var(--ink); }
.brand-text .sub { font-size: 9.5px; font-weight: 500; letter-spacing: 0.02em; color: var(--ink-faint); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
nav.primary { display: flex; align-items: center; gap: 2px; }
nav.primary a { text-decoration: none; font-size: 12.5px; font-weight: 500; color: var(--ink-soft); padding: 8px 13px; border-radius: var(--r-full); transition: color .15s ease; }
nav.primary a:hover, nav.primary a:focus-visible { color: var(--ink); }

/* page header */
.page-head { padding: clamp(48px,8vw,80px) 0 clamp(28px,4vw,40px); text-align: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; font-size: 12px; font-weight: 600; letter-spacing: 0.04em; color: var(--accent-ink); margin: 0 0 14px; }
.page-head h1 { margin: 0 0 14px; font-weight: 700; font-size: clamp(28px, 5vw, 40px); line-height: 1.15; letter-spacing: -0.02em; }
.page-head p { max-width: 46ch; margin: 0 auto; color: var(--ink-soft); font-size: 15px; }

/* card + form */
section.block { padding: 0 0 clamp(56px, 8vw, 96px); }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg); padding: clamp(24px,4vw,36px); box-shadow: var(--shadow-sm); }
.field { margin: 0 0 20px; }
.field label { display: block; font-size: 13px; font-weight: 600; color: var(--ink); margin: 0 0 8px; }
.field .hint { font-size: 12px; color: var(--ink-faint); margin: 6px 0 0; }
.field .readonly-value { font-size: 15px; color: var(--ink); padding: 12px 14px; background: var(--surface-dim); border-radius: var(--r-sm); }
input[type="email"], input[type="text"], textarea {
  width: 100%; font: inherit; font-size: 15px; color: var(--ink); background: var(--surface);
  border: 1px solid var(--line); border-radius: var(--r-sm); padding: 12px 14px; transition: border-color .15s ease;
}
input[type="email"]:focus, input[type="text"]:focus, textarea:focus { border-color: var(--accent); }
textarea { resize: vertical; min-height: 140px; }
.form-error { background: var(--accent-soft); color: var(--accent-ink); border-radius: var(--r-sm); padding: 12px 14px; font-size: 13.5px; margin: 0 0 20px; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 14px 28px; font-size: 15px; font-weight: 600; text-decoration: none; border: none; cursor: pointer; border-radius: var(--r-full); transition: transform .2s var(--ease), background .2s ease, color .2s ease; width: 100%; }
.btn-primary { background: var(--accent); color: var(--on-accent); box-shadow: var(--shadow-sm); }
.btn-primary:hover { background: var(--accent-ink); transform: translateY(-1px); }
.btn-link { display: inline-block; margin-top: 16px; font-size: 14px; font-weight: 600; color: var(--accent-ink); text-decoration: none; }

.notice-card { text-align: center; }
.notice-card .icon { font-size: 34px; margin: 0 0 10px; }
.notice-card h2 { margin: 0 0 10px; font-size: 20px; font-weight: 700; }
.notice-card p { color: var(--ink-soft); font-size: 14.5px; margin: 0 0 6px; }
.notice-card .notice-desc { margin-top: 3em; }

footer.site { border-top: 1px solid var(--line); padding: 24px 0; text-align: center; }
footer.site span, footer.site a { font-size: 12.5px; color: var(--ink-faint); text-decoration: none; }