* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: #000;
    color: #fff;
    overflow-x: hidden;
}

header {
    z-index: 1000;
}

.navbar {
    padding: 1rem 2rem;
}

.slides-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    background-color: #000;
}

.slide-image {
    width: 100%;
    max-width: 1200px;
    height: auto;
    display: block;
    margin: 0;
    padding: 0;
    line-height: 0;
}

.floating-cta {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: rgba(0, 0, 0, 0.9);
    padding: 1rem;
    z-index: 999;
}

.btn-warning {
    background-color: #ffc107;
    border-color: #ffc107;
    color: #000;
    font-weight: bold;
    transition: all 0.3s ease;
}

.btn-warning:hover {
    background-color: #ffca2c;
    border-color: #ffca2c;
    transform: scale(1.05);
}

.modal-content {
    border: 1px solid #333;
}

#paypal-button-container-P-01T15555CH421721ENBTKXWI {
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* レスポンシブデザイン */
@media (max-width: 768px) {
    .navbar {
        padding: 0.75rem 1rem;
    }
    
    .navbar .btn-lg {
        font-size: 1rem;
        padding: 0.5rem 1rem;
    }
    
    .slide-image {
        max-width: 100%;
    }
    
    body {
        padding-bottom: 80px;
    }
}

@media (min-width: 769px) {
    .floating-cta {
        display: none;
    }
    
    .slides-container {
        padding: 0 2rem;
    }
}

/* スムーズスクロール */
html {
    scroll-behavior: smooth;
}

/* 画像の読み込み最適化 */
.slide-image {
    background-color: #111;
    min-height: 100px;
}

/* アニメーション */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.slide-image {
    animation: fadeIn 0.6s ease-out;
}

/* PayPalボタンのカスタマイズ */
.paypal-buttons {
    width: 100% !important;
    max-width: 400px !important;
    margin: 0 auto !important;
}