/* =========================================
   footer.css - BEM版 (variables.css対応)
   Persona Finder フッター専用スタイル
   
   ⚠️ 重要: variables.css を先に読み込むこと
========================================= */

/* ==========================================
   フッター全体
========================================== */
.footer {
  position: relative;
  width: 100%;
  background: var(--footer-bg);
  border-top: 1px solid var(--footer-border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: var(--footer-text-secondary);
  font-family: var(--font-ui);
  overflow: hidden;
  box-sizing: border-box;
}

/* 背景グラデーション効果 */
.footer::before {
  content: '';
  position: absolute;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  height: 100%;
  background: radial-gradient(ellipse at top, var(--accent-glow), transparent 60%);
  pointer-events: none;
  opacity: 0.3;
  z-index: 0;
}

/* ==========================================
   コンテナ
========================================== */
.footer__container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: var(--footer-padding-y) var(--footer-padding-x) 40px;
  position: relative;
  z-index: 1;
  box-sizing: border-box;
}

/* ==========================================
   フッター上部(ロゴ + ナビゲーション)
========================================== */
.footer__top {
  display: grid;
  grid-template-columns: 1.2fr 2fr;
  gap: var(--footer-gap);
  margin-bottom: var(--footer-gap);
}

/* ==========================================
   ブランドセクション
========================================== */
.footer__brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-1);
  text-decoration: none;
  transition: transform var(--transition-base);
}

.footer__logo:hover {
  transform: translateX(2px);
}

.footer__logo-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: var(--gradient-accent);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--font-extrabold);
  font-size: var(--text-2xl);
  box-shadow: var(--shadow-accent-md);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  flex-shrink: 0;
}

.footer__logo:hover .footer__logo-icon {
  transform: rotate(8deg) scale(1.05);
  box-shadow: var(--shadow-accent-lg);
}

.footer__logo-text {
  font-size: var(--text-xl);
  font-weight: var(--font-extrabold);
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
}

.footer__tagline {
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
  color: var(--footer-text-muted);
  max-width: 280px;
  margin: 0;
}

/* ==========================================
   ナビゲーション
========================================== */
.footer__nav {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.footer__nav-column {
  display: flex;
  flex-direction: column;
}

.footer__nav-title {
  font-size: var(--text-xs);
  font-weight: var(--font-bold);
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--footer-text-primary);
  margin: 0 0 var(--space-3) 0;
  opacity: 0.9;
}

.footer__nav-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.footer__nav-list li {
  margin: 0;
}

.footer__nav-link {
  font-size: var(--text-sm);
  color: var(--footer-text-secondary);
  text-decoration: none;
  transition: color var(--transition-base), transform 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  position: relative;
}

.footer__nav-link::before {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-accent);
  transition: width var(--transition-base);
}

.footer__nav-link:hover {
  color: var(--footer-text-primary);
  transform: translateX(4px);
}

.footer__nav-link:hover::before {
  width: 100%;
}

.footer__nav-link:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 4px;
  border-radius: 2px;
}

/* 外部リンクアイコン */
.footer__nav-icon {
  font-size: var(--text-xs);
  opacity: 0.6;
  transition: opacity var(--transition-base);
}

.footer__nav-link:hover .footer__nav-icon {
  opacity: 1;
}

/* ==========================================
   区切り線
========================================== */
.footer__divider {
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, 
    transparent, 
    var(--footer-border) 20%, 
    var(--footer-border) 80%, 
    transparent
  );
  margin: var(--footer-gap) 0 40px;
  position: relative;
}

.footer__divider::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 200px;
  height: 40px;
  background: radial-gradient(ellipse, rgba(59, 130, 246, 0.2), transparent 70%);
  pointer-events: none;
}

/* ==========================================
   フッター下部(引用 + メタ情報)
========================================== */
.footer__bottom {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  text-align: center;
}

/* ==========================================
   引用
========================================== */
.footer__quote {
  position: relative;
}

.footer__quote-text {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-style: italic;
  line-height: var(--leading-relaxed);
  color: var(--accent-primary);
  max-width: 700px;
  margin: 0 auto;
  text-shadow: 0 0 8px rgba(59, 130, 246, 0.2);
  position: relative;
  padding: 0 40px;
  border: none;
}

.footer__quote-text p {
  margin: 0;
}

.footer__quote-text::before,
.footer__quote-text::after {
  content: '"';
  position: absolute;
  font-size: 48px;
  font-weight: var(--font-extrabold);
  font-family: var(--font-mono);
  color: rgba(59, 130, 246, 0.15);
  line-height: 1;
  font-style: normal;
}

.footer__quote-text::before {
  top: -10px;
  left: 0;
}

.footer__quote-text::after {
  bottom: -30px;
  right: 0;
}

/* ==========================================
   メタ情報
========================================== */
.footer__meta {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.footer__disclaimer {
  font-size: var(--text-xs);
  line-height: var(--leading-normal);
  color: var(--footer-text-muted);
  opacity: 0.8;
  margin: 0;
}

.footer__copyright {
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  color: var(--footer-text-secondary);
  margin: 0;
  letter-spacing: 0.3px;
}

.footer__copyright-year {
  font-family: var(--font-mono);
}

.footer__copyright-link {
  color: var(--accent-primary);
  text-decoration: none;
  transition: opacity var(--transition-base);
}

.footer__copyright-link:hover {
  opacity: 0.8;
  text-decoration: underline;
}

/* ==========================================
   デコレーション用グロー
========================================== */
.footer__glow {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, 
    transparent,
    var(--accent-primary) 30%,
    #8b5cf6 70%,
    transparent
  );
  opacity: 0.3;
  animation: glowPulse 4s ease-in-out infinite;
}

@keyframes glowPulse {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 0.6; }
}

/* ==========================================
   アニメーション
========================================== */
.footer {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--transition-slower), transform var(--transition-slower);
}

.footer--visible {
  opacity: 1;
  transform: translateY(0);
}

/* noscript版は即座に表示 */
.footer--noscript {
  opacity: 1 !important;
  transform: none !important;
}

/* フッター要素の段階的表示 */
.footer--visible .footer__top {
  animation: fadeInUp 0.6s ease forwards;
}

.footer--visible .footer__divider {
  animation: fadeInUp 0.6s ease 0.1s forwards;
  opacity: 0;
}

.footer--visible .footer__bottom {
  animation: fadeInUp 0.6s ease 0.2s forwards;
  opacity: 0;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ==========================================
   レスポンシブ: タブレット (1024px以下)
========================================== */
@media (max-width: 1024px) {
  .footer__top {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .footer__nav {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-5);
  }
  
  .footer__tagline {
    max-width: 100%;
  }
}

/* ==========================================
   レスポンシブ: モバイル (768px以下)
========================================== */
@media (max-width: 768px) {
  .footer__container {
    padding-bottom: var(--space-5);
  }
  
  .footer__top {
    gap: var(--space-5);
    margin-bottom: 40px;
  }
  
  .footer__nav {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }
  
  .footer__nav-title {
    font-size: var(--text-xs);
    margin-bottom: var(--space-2);
  }
  
  .footer__divider {
    margin: 40px 0 var(--space-5);
  }
  
  .footer__quote-text {
    font-size: var(--text-xs);
    padding: 0 var(--space-5);
  }
  
  .footer__quote-text::before,
  .footer__quote-text::after {
    font-size: 36px;
  }
  
  .footer__quote-text::before {
    top: -8px;
    left: -4px;
  }
  
  .footer__quote-text::after {
    bottom: -24px;
    right: -4px;
  }
  
  .footer__disclaimer {
    font-size: 11px;
  }
  
  .footer__copyright {
    font-size: var(--text-xs);
  }
  
  .hide-mobile {
    display: none;
  }
}

/* ==========================================
   レスポンシブ: 小型モバイル (480px以下)
========================================== */
@media (max-width: 480px) {
  .footer__logo-icon {
    width: 40px;
    height: 40px;
    font-size: var(--text-xl);
  }
  
  .footer__logo-text {
    font-size: var(--text-lg);
  }
  
  .footer__tagline {
    font-size: var(--text-xs);
  }
  
  .footer__quote-text {
    font-size: var(--text-xs);
    padding: 0 var(--space-4);
    line-height: var(--leading-snug);
  }
  
  .footer__quote-text::before,
  .footer__quote-text::after {
    font-size: 28px;
  }
  
  .footer__nav-link {
    font-size: var(--text-xs);
  }
  
  .footer__nav-title {
    font-size: 11px;
  }
}

/* ==========================================
   アクセシビリティ: ハイコントラストモード
========================================== */
@media (prefers-contrast: high) {
  .footer {
    background: var(--footer-bg-solid);
    border-top: 2px solid var(--footer-text-primary);
  }
  
  .footer__nav-link {
    text-decoration: underline;
  }
  
  .footer__logo-icon {
    border: 2px solid var(--footer-text-primary);
  }
}

/* ==========================================
   アクセシビリティ: ダークモード優先
========================================== */
@media (prefers-color-scheme: dark) {
  /* variables.css で既に定義済み */
}

/* ==========================================
   アクセシビリティ: モーション削減
========================================== */
@media (prefers-reduced-motion: reduce) {
  .footer,
  .footer__nav-link,
  .footer__logo-icon,
  .footer__glow,
  .footer__top,
  .footer__divider,
  .footer__bottom {
    animation: none !important;
    transition: none !important;
  }
  
  .footer__nav-link:hover,
  .footer__logo:hover {
    transform: none;
  }
  
  .footer {
    opacity: 1;
    transform: none;
  }
}

/* ==========================================
   印刷用スタイル
========================================== */
@media print {
  .footer {
    background: white;
    color: black;
    border-top: 2px solid black;
    page-break-inside: avoid;
  }
  
  .footer__glow,
  .footer::before,
  .footer__divider::before {
    display: none;
  }
  
  .footer__nav-link {
    color: black;
    text-decoration: underline;
  }
  
  .footer__nav-link[href^="#"]::after {
    content: " (" attr(href) ")";
    font-size: 10px;
  }
  
  .footer__logo-icon {
    background: black;
    box-shadow: none;
  }
  
  .footer__logo-text,
  .footer__quote-text {
    color: black !important;
    -webkit-text-fill-color: black !important;
    text-shadow: none;
  }
}