:root {
  --color-bg: #faf8f6;
  --color-surface: #ffffff;
  --color-surface-alt: #f5eef2;
  --color-text: #1a1118;
  --color-text-muted: #6b5963;
  --color-border: #ebe1e6;

  --color-primary: #c2185b;
  --color-primary-dark: #8e0e42;
  --color-primary-light: #fde4ec;
  --color-accent: #e91e63;
  --color-dark: #1a1118;

  --color-danger: #d32f2f;
  --color-success: #2e7d32;
  --color-warning: #f9a825;

  --color-gold: #f9b027;
  --color-silver: #b8bcc0;
  --color-bronze: #c4793d;

  --radius-sm: 4px;
  --radius: 8px;
  --radius-lg: 14px;
  --radius-xl: 20px;

  --shadow-sm: 0 1px 3px rgba(26, 17, 24, 0.08);
  --shadow: 0 4px 16px rgba(26, 17, 24, 0.08);
  --shadow-lg: 0 12px 40px rgba(26, 17, 24, 0.14);

  --font-sans: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic UI", "Segoe UI", "Meiryo", sans-serif;
  --font-serif: var(--font-sans);

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;

  --nav-height: 60px;
  --max-content: 1160px;
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  padding: 0;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
img { max-width: 100%; display: block; }
h1, h2, h3, h4 { line-height: 1.35; }

/* ============ グローバルナビ (全ページ共通) ============ */
.global-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #fff;
  border-bottom: 1px solid #f0f0f0;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  padding: 0 16px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.05);
  box-sizing: border-box;
}
.gnav-inner {
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: var(--space-4);
  box-sizing: border-box;
}
.gnav-logo {
  font-size: 18px;
  font-weight: 800;
  color: var(--color-dark);
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.gnav-logo span { color: var(--color-primary); }
.gnav-menu {
  display: flex;
  gap: var(--space-2);
  flex: 1;
  justify-content: center;
}
.gnav-link {
  padding: 8px 18px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  border-radius: var(--radius);
  transition: background 0.12s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.gnav-link:hover { background: var(--color-primary-light); color: var(--color-primary-dark); }
.gnav-link.active { color: var(--color-primary); }
.gnav-actions { display: flex; gap: var(--space-2); align-items: center; }
.gnav-user { display: flex; align-items: center; gap: var(--space-2); font-size: 13px; color: var(--color-text); }
.gnav-toggle {
  display: none;
  background: transparent;
  border: 0;
  font-size: 22px;
  padding: 6px 10px;
  color: var(--color-dark);
}

/* ============ ボタン共通 ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  font-size: 14px;
  font-weight: 600;
  transition: all 0.12s ease;
  background: transparent;
  color: var(--color-text);
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-dark); }
.btn-ghost { border-color: var(--color-border); background: #fff; }
.btn-ghost:hover { border-color: var(--color-primary); color: var(--color-primary); }
.btn-dark { background: var(--color-dark); color: #fff; }
.btn-dark:hover { background: #000; }
.btn-block { width: 100%; }
.btn-sm { padding: 6px 14px; font-size: 12px; }
.btn-lg { padding: 14px 32px; font-size: 16px; }

/* ============ 共通フォーム ============ */
.field { margin-bottom: var(--space-4); }
.field label {
  display: block;
  font-size: 12px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 6px;
  letter-spacing: 0.03em;
}
.field input, .field select, .field textarea {
  width: 100%;
  padding: 11px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: #fff;
  font-size: 14px;
  font-family: inherit;
  color: var(--color-text);
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(194, 24, 91, 0.12);
}
.form-error { color: var(--color-danger); font-size: 13px; min-height: 18px; margin-bottom: var(--space-2); }

/* ============ フッター共通 ============ */
.footer {
  padding: var(--space-6);
  text-align: center;
  color: var(--color-text-muted);
  font-size: 13px;
  border-top: 1px solid var(--color-border);
  background: #fff;
  margin-top: var(--space-7);
}
.footer a { color: var(--color-primary); }

@media (max-width: 768px) {
  .gnav-menu { display: none; }
  .gnav-actions .btn { padding: 6px 10px; font-size: 12px; }
  .gnav-toggle { display: inline-flex; order: 99; margin-left: auto; }
  .gnav-toggle + .gnav-menu.open {
    display: flex;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    padding: var(--space-3);
    gap: 4px;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow);
    z-index: 99;
  }
}
@media (max-width: 640px) {
  .global-nav { padding: 0 12px; }
  .gnav-actions { display: none; }
  .gnav-toggle { display: inline-flex; order: 99; margin-left: auto; }
}