/* ==========================================================================
   contact-styles.css — お問い合わせページ専用
   ========================================================================== */

:root {
  --font-family: "Noto Sans JP", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --background-white: #ffffff;
  --background-gray-50: #f8fafc;
  --background-gray-100: #f1f5f9;
  --border-gray: #e2e8f0;
  --text-primary: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;
  --primary-blue: #2563eb;
  --primary-blue-light: #60a5fa;
  --primary-blue-hover: #1d4ed8;
  --spacing-xs: .25rem;
  --spacing-sm: .5rem;
  --spacing-md: .75rem;
  --spacing-lg: 1rem;
  --spacing-xl: 1.5rem;
  --spacing-2xl: 2rem;
  --spacing-3xl: 3rem;
  --radius-md: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 2px 8px rgba(15, 23, 42, .06);
  --shadow-md: 0 8px 20px rgba(15, 23, 42, .12);
  --shadow-lg: 0 16px 40px rgba(15, 23, 42, .18);
  --hero-grad-a: #1e3a8a;
  --hero-grad-b: #3b82f6;
}

/* ベース */
*,
*::before,
*::after { box-sizing: border-box; }
html, body {
  margin: 0;
  padding: 0;
  font-family: var(--font-family);
  color: var(--text-primary);
  background: var(--background-white);
}
img { max-width: 100%; height: auto; display: block; }
.container { width: min(1000px, 92vw); margin-inline: auto; }

/* ヒーロー */
.page-hero {
  background: linear-gradient(135deg, var(--hero-grad-a), var(--hero-grad-b));
  padding: 4rem 0 3rem;
  text-align: center;
  color: white;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute; inset: 0;
  background:
    radial-gradient(120% 120% at 0% 0%, rgba(255,255,255,.15), transparent 60%),
    radial-gradient(120% 120% at 100% 100%, rgba(255,255,255,.08), transparent 60%);
}
.page-hero-content { position: relative; z-index: 1; }
.page-hero h1 {
  margin: 0 0 .5rem; font-weight: 900; letter-spacing: .02em;
  font-size: clamp(24px, 6vw, 36px);
}
.page-hero p { margin: 0; opacity: .95; font-size: clamp(14px, 3.8vw, 18px); }

/* 方法カード */
.contact-methods {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--spacing-2xl); margin: var(--spacing-3xl) 0;
}
.contact-method {
  background: var(--background-white);
  border: 1px solid var(--border-gray);
  border-radius: var(--radius-lg);
  padding: var(--spacing-2xl);
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: transform .2s ease, box-shadow .2s ease;
}
.contact-method:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.contact-method-icon {
  width: 64px; height: 64px; margin: 0 auto var(--spacing-lg); border-radius: 50%;
  display: grid; place-items: center; color: #fff;
  background: linear-gradient(135deg, var(--primary-blue-light), var(--primary-blue));
  font-size: 24px;
}
.contact-method h3 { margin: 0 0 .25rem; font-weight: 800; font-size: 18px; }
.contact-method p { margin: 0 0 var(--spacing-lg); color: var(--text-secondary); }

/* CTAボタン */
.cta-btn {
  display: inline-flex; align-items: center; gap: .5rem;
  background: var(--primary-blue); color: #fff; padding: .75rem 1.2rem;
  text-decoration: none; border-radius: 10px; font-weight: 700;
  box-shadow: var(--shadow-sm);
  transition: transform .15s, filter .15s, box-shadow .15s ease;
}
.cta-btn:hover { transform: translateY(-1px); filter: brightness(1.03); box-shadow: var(--shadow-md); }

/* セクション */
.contact-form-section { background: var(--background-gray-50); padding: var(--spacing-3xl) 0; }
.contact-overview { text-align: center; color: var(--text-secondary); font-size: 16px; }

/* フォームコンテナ */
.contact-form-container {
  margin-top: var(--spacing-2xl); background: var(--background-white);
  border: 1px solid var(--border-gray); border-radius: var(--radius-lg);
  padding: var(--spacing-3xl); box-shadow: var(--shadow-sm);
}

/* フォームUI */
.form-group { margin-bottom: var(--spacing-xl); }
.form-group label { display: block; font-weight: 700; margin-bottom: .4rem; }
.required { color: #dc2626; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: .8rem .9rem; border: 2px solid var(--border-gray);
  border-radius: var(--radius-md); font-size: 16px;
  transition: border-color .2s ease, box-shadow .2s ease; background: #fff;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none; border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, .12);
}
.form-group textarea { min-height: 140px; resize: vertical; }
.form-group small { display: block; margin-top: .35rem; color: var(--text-muted); }

/* ボタン */
.form-buttons { display: flex; gap: var(--spacing-md); justify-content: center; margin-top: var(--spacing-2xl); }
.submit-btn {
  background: var(--primary-blue); color: #fff; border: none; border-radius: 10px;
  padding: .9rem 2rem; font-weight: 800; font-size: 16px; cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: transform .15s ease, filter .15s ease, box-shadow .15s ease;
}
.submit-btn:hover { transform: translateY(-1px); filter: brightness(1.03); box-shadow: var(--shadow-md); }
.submit-btn:disabled { opacity: .7; cursor: not-allowed; }
.reset-btn {
  background: #eef2f7; color: var(--text-secondary); border: 1px solid var(--border-gray);
  border-radius: 10px; padding: .9rem 2rem; font-weight: 700; cursor: pointer;
  transition: filter .15s ease, box-shadow .15s ease;
}
.reset-btn:hover { filter: brightness(1.02); box-shadow: var(--shadow-sm); }

/* メッセージ */
.message {
  margin: 0 auto var(--spacing-xl); width: min(800px, 92vw);
  padding: .9rem 1rem; border-radius: 10px; font-weight: 700; text-align: center;
  animation: fadeIn .25s ease;
}
.message.success { background: #d1fae5; color: #065f46; border: 1px solid #10b981; }
.message.error { background: #fee2e2; color: #991b1b; border: 1px solid #dc2626; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(6px);} to { opacity: 1; transform: translateY(0);} }

/* レスポンシブ */
@media (max-width: 768px) {
  .contact-form-container { padding: var(--spacing-2xl); }
  .form-buttons { flex-direction: column; }
  .submit-btn, .reset-btn { width: 100%; }
}