/* ====================================
   5R3 CARS - カスタムCSS
   Tailwind CSS はCDNで読み込み、
   このファイルにはカスタムスタイルのみ記述
   ==================================== */

:root {
    --background: #ffffff;
    --foreground: #0a0a0a;
    --primary: #94a3b8;
    --primary-foreground: #0a0a0a;
    --silver-light: #f8fafc;
    --silver-mid: #cbd5e1;
    --silver-dark: #64748b;
    --metallic-gradient: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 25%, #94a3b8 50%, #cbd5e1 75%, #f8fafc 100%);
    --accent: #1e293b;
    --accent-foreground: #ffffff;
    --muted: #f1f5f9;
    --muted-foreground: #475569;
}

body {
    background: var(--background);
    color: var(--foreground);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Hiragino Sans', 'Noto Sans JP', sans-serif;
    -webkit-font-smoothing: antialiased;
}

/* メタリックグラデーション */
.bg-metallic {
    background: var(--metallic-gradient);
    background-size: 200% 200%;
    animation: shine 10s linear infinite;
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.5), 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

@keyframes shine {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* フェードインアニメーション */
.fade-up {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}

.fade-up-delay-1 { transition-delay: 0.1s; }
.fade-up-delay-2 { transition-delay: 0.2s; }
.fade-up-delay-3 { transition-delay: 0.3s; }
.fade-up-delay-4 { transition-delay: 0.4s; }

.fade-right {
    opacity: 0;
    transform: translateX(50px);
    transition: opacity 0.6s ease 0.4s, transform 0.6s ease 0.4s;
}
.fade-right.visible {
    opacity: 1;
    transform: translateX(0);
}

/* パルスアニメーション */
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}
.animate-pulse { animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite; }

/* バウンスアニメーション */
@keyframes bounce {
    0%, 100% { transform: translateY(-10%); animation-timing-function: cubic-bezier(0.8, 0, 1, 1); }
    50% { transform: translateY(0); animation-timing-function: cubic-bezier(0, 0, 0.2, 1); }
}
.animate-bounce { animation: bounce 1s infinite; }

/* テキストシャドウ */
.text-shadow-lg { text-shadow: 0 2px 10px rgba(0,0,0,0.5); }

/* スクロールトップボタン */
.scroll-top-btn {
    opacity: 0;
    transform: scale(0.8);
    transition: opacity 0.2s, transform 0.2s;
    pointer-events: none;
}
.scroll-top-btn.visible {
    opacity: 1;
    transform: scale(1);
    pointer-events: auto;
}

/* ライトボックス */
.lightbox {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 50;
    background: rgba(0,0,0,0.95);
    backdrop-filter: blur(4px);
    align-items: center;
    justify-content: center;
}
.lightbox.active {
    display: flex;
}
.lightbox img {
    max-width: 90vw;
    max-height: 85vh;
    object-fit: contain;
}

/* モバイルメニューオーバーレイ */
.mobile-menu {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 100;
    background: white;
    flex-direction: column;
}
.mobile-menu.active {
    display: flex;
}

/* 管理画面トグルスイッチ */
.toggle-switch {
    position: relative;
    display: inline-flex;
    align-items: center;
    cursor: pointer;
}
.toggle-switch input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}
.toggle-slider {
    width: 44px;
    height: 24px;
    background: #e2e8f0;
    border-radius: 9999px;
    transition: background 0.2s;
    position: relative;
}
.toggle-slider::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 20px;
    height: 20px;
    background: white;
    border-radius: 9999px;
    border: 1px solid #cbd5e1;
    transition: transform 0.2s;
}
.toggle-switch input:checked + .toggle-slider {
    background: #003366;
}
.toggle-switch input:checked + .toggle-slider::after {
    transform: translateX(20px);
}

/* line-clamp */
.line-clamp-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* アスペクト比 (Tailwind CDNにない場合のフォールバック) */
.aspect-video { aspect-ratio: 16/9; }
.aspect-square { aspect-ratio: 1/1; }
.aspect-4-3 { aspect-ratio: 4/3; }
.aspect-16-10 { aspect-ratio: 16/10; }