/* ヘッダー (self-introduction 和モダン グラスモーフィズム) */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--color-bg) 85%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-line);
}

.header-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

/* ブランドロゴ (wakanaharu.com へのリンク) */
.site-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: inherit;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.site-brand:hover {
  background-color: var(--color-surface);
}

.site-brand:hover .brand-icon {
  transform: scale(1.08) rotate(-3deg);
  box-shadow: 0 4px 16px rgba(122, 184, 122, 0.45);
}

.site-brand:hover .brand-title {
  color: var(--color-matcha-light);
}

.brand-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--color-matcha) 0%, #34523C 100%);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.35);
  transition: transform var(--transition-bounce), box-shadow var(--transition-fast);
}

.brand-text-wrap {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.brand-title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--color-text);
  transition: color var(--transition-fast);
}

.brand-subtitle {
  font-family: var(--font-display);
  font-size: 0.78rem;
  color: var(--color-text-muted);
  font-weight: 600;
  padding-left: 8px;
  border-left: 1px solid var(--color-line);
  letter-spacing: 0.03em;
}

/* ナビゲーションタブ */
.header-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  background-color: var(--bg-input);
  padding: 4px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-line);
}

.nav-tab {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  font-size: 0.86rem;
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--color-text-muted);
  border-radius: var(--radius-xs);
  transition: all var(--transition-fast);
  cursor: pointer;
  border: 1px solid transparent;
}

.nav-tab-icon {
  font-size: 0.95rem;
}

.nav-tab:hover {
  color: var(--color-text);
  background-color: var(--color-surface);
}

.nav-tab.is-active {
  color: var(--color-bg);
  background-color: var(--color-matcha);
  border-color: var(--color-matcha);
  box-shadow: 0 2px 8px rgba(122, 184, 122, 0.35);
}

/* ユーザーバー */
.header-user {
  display: flex;
  align-items: center;
  gap: 16px;
}

.user-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-text);
  background-color: var(--color-surface);
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-line);
  box-shadow: var(--shadow-sm);
}

.user-badge.is-hidden {
  display: none !important;
}

.user-badge__logout {
  margin-left: 8px;
}

.user-badge__dot {
  width: 8px;
  height: 8px;
  background-color: var(--color-matcha);
  border-radius: 50%;
  box-shadow: 0 0 8px rgba(122, 184, 122, 0.7);
}

/* メインコンテンツ */
.main-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 32px 24px;
  flex: 1;
  width: 100%;
}

.view-section {
  display: none;
  animation: fadeIn 0.25s var(--ease-wa);
}

.view-section.is-active {
  display: block;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 14px;
}

.section-title-wrap {
  display: flex;
  align-items: baseline;
  gap: 14px;
  flex-wrap: wrap;
}

.section-title {
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--color-text);
}

.section-desc {
  font-size: 0.88rem;
  color: var(--color-text-muted);
}

.section-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

@media (max-width: 768px) {
  .header-inner {
    height: auto;
    padding: 12px 16px;
    flex-direction: column;
    align-items: stretch;
  }
  .brand-subtitle {
    display: none;
  }
  .header-nav {
    justify-content: center;
    overflow-x: auto;
  }
  .main-container {
    padding: 16px 12px;
  }
}