/* ========================================
   CLIPPER - ゲーミング風デザインシステム
   ======================================== */

/* カラーパレット */
:root {
    --neon-pink: #FF006E;
    --neon-cyan: #00F5FF;
    --neon-purple: #8B00FF;
    --neon-green: #39FF14;
    --neon-yellow: #FFD700;
    --neon-orange: #FF6B35;

    --bg-dark: #0A0E27;
    --bg-darker: #050814;
    --bg-card: #1A1F3A;
    --bg-card-hover: #252B4A;

    --text-primary: #FFFFFF;
    --text-secondary: #B8C5D6;
    --text-muted: #6B7B93;

    --glow-pink: 0 0 20px rgba(255, 0, 110, 0.6);
    --glow-cyan: 0 0 20px rgba(0, 245, 255, 0.6);
    --glow-purple: 0 0 20px rgba(139, 0, 255, 0.6);
    --glow-green: 0 0 20px rgba(57, 255, 20, 0.6);
}

/* リセット＆基本設定 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: linear-gradient(135deg, var(--bg-darker) 0%, var(--bg-dark) 100%);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

/* 背景アニメーション */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(circle at 20% 30%, rgba(255, 0, 110, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(0, 245, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(139, 0, 255, 0.05) 0%, transparent 50%);
    z-index: -1;
    animation: bgPulse 10s ease-in-out infinite;
}

@keyframes bgPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

/* ヘッダー */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 14, 39, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 2px solid rgba(255, 0, 110, 0.3);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 2rem;
    font-weight: 900;
    background: linear-gradient(135deg, var(--neon-pink), var(--neon-cyan), var(--neon-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: var(--glow-pink);
    letter-spacing: 2px;
    animation: logoGlow 3s ease-in-out infinite;
}

@keyframes logoGlow {
    0%, 100% { filter: brightness(1); }
    50% { filter: brightness(1.3); }
}

.nav {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 600;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 0, 110, 0.3), transparent);
    transition: left 0.5s ease;
}

.nav-link:hover::before {
    left: 100%;
}

.nav-link:hover {
    color: var(--neon-pink);
    text-shadow: var(--glow-pink);
}

.nav-link.active {
    background: rgba(255, 0, 110, 0.2);
    box-shadow: var(--glow-pink);
}

/* メインコンテナ */
.main-container {
    max-width: 1400px;
    margin: 80px auto 0;
    padding: 2rem;
}

/* カードベースレイアウト */
.card {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 1.5rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(135deg, var(--neon-pink), var(--neon-cyan), var(--neon-purple));
    border-radius: 16px;
    opacity: 0;
    z-index: -1;
    transition: opacity 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    background: var(--bg-card-hover);
}

.card:hover::before {
    opacity: 0.3;
}

/* ボタン */
.btn {
    padding: 0.75rem 2rem;
    border: none;
    border-radius: 12px;
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
    overflow: hidden;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--neon-pink), var(--neon-purple));
    color: white;
    box-shadow: var(--glow-pink);
}

.btn-primary:hover {
    box-shadow: 0 0 30px rgba(255, 0, 110, 0.8);
    transform: scale(1.05);
}

.btn-secondary {
    background: linear-gradient(135deg, var(--neon-cyan), var(--neon-green));
    color: white;
    box-shadow: var(--glow-cyan);
}

.btn-secondary:hover {
    box-shadow: 0 0 30px rgba(0, 245, 255, 0.8);
    transform: scale(1.05);
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:active::before {
    width: 300px;
    height: 300px;
}

/* グリッドレイアウト */
.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

/* 動画カード */
.video-card {
    background: var(--bg-card);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.3s ease;
    cursor: pointer;
    border: 2px solid transparent;
}

.video-card:hover {
    transform: translateY(-10px);
    border-color: var(--neon-pink);
    box-shadow: var(--glow-pink);
}

.video-thumbnail {
    width: 100%;
    aspect-ratio: 9/16;
    object-fit: cover;
    display: block;
}

.video-info {
    padding: 1rem;
}

.video-title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.video-meta span {
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

/* キャラクターバッジ */
.character-badge {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-top: 0.5rem;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid currentColor;
}

/* ゲーム別カラー */
.game-pacman { color: var(--neon-yellow); border-color: var(--neon-yellow); }
.game-tekken { color: var(--neon-pink); border-color: var(--neon-pink); }
.game-tales { color: var(--neon-cyan); border-color: var(--neon-cyan); }
.game-idolmaster { color: #FF69B4; border-color: #FF69B4; }
.game-taiko { color: var(--neon-orange); border-color: var(--neon-orange); }

/* ローディングアニメーション */
.loading {
    display: inline-block;
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255, 255, 255, 0.1);
    border-top-color: var(--neon-pink);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* スクロールバー */
::-webkit-scrollbar {
    width: 12px;
}

::-webkit-scrollbar-track {
    background: var(--bg-darker);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--neon-pink), var(--neon-purple));
    border-radius: 6px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, var(--neon-cyan), var(--neon-green));
}

/* レスポンシブ */
@media (max-width: 768px) {
    .header-content {
        padding: 1rem;
    }

    .nav {
        gap: 1rem;
    }

    .nav-link {
        padding: 0.4rem 0.8rem;
        font-size: 0.9rem;
    }

    .video-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: 1rem;
    }

    .main-container {
        padding: 1rem;
    }
}

/* アニメーション用ユーティリティ */
.fade-in {
    animation: fadeIn 0.5s ease-in;
}

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

.slide-in {
    animation: slideIn 0.5s ease-out;
}

@keyframes slideIn {
    from { transform: translateX(-100%); }
    to { transform: translateX(0); }
}