/* 上に戻るボタン */
.scroll-to-top-button {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 999;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #3b82f6 0%, #1e40af 100%);
    border-radius: 50%;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
    transition: all 0.3s ease;
    opacity: 0;
    visibility: hidden;
    transform: translateY(100px);
}

.scroll-to-top-button.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.scroll-to-top-button:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.6);
}

.scroll-to-top-button svg {
    stroke: white;
}

/* ヘッダーナビゲーション - アクティブページのハイライト */
nav a.nav-active {
    background: rgba(255, 255, 255, 0.2);
    padding: 8px 16px;
    border-radius: 6px;
    font-weight: 600;
}

/* グローバルハンバーガーメニュー */
.global-menu-button {
    position: fixed;
    top: 20px;
    left: 20px;
    z-index: 1000;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #3b82f6 0%, #1e40af 100%);
    border-radius: 50%;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
    transition: all 0.3s ease;
}

.global-menu-button:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.6);
}

.global-menu-button svg {
    width: 24px;
    height: 24px;
    stroke: white;
}

.global-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.global-menu-overlay.active {
    opacity: 1;
    visibility: visible;
}

.global-menu {
    position: fixed;
    top: 0;
    left: -320px;
    width: 320px;
    height: 100%;
    background: linear-gradient(180deg, #3b82f6 0%, #1e40af 100%);
    z-index: 1000;
    transition: left 0.3s ease;
    overflow-y: auto;
    box-shadow: 2px 0 15px rgba(0, 0, 0, 0.3);
}

.global-menu.active {
    left: 0;
}

.global-menu-header {
    padding: 30px 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.global-menu-title {
    color: white;
    font-size: 24px;
    font-weight: bold;
    margin: 0;
}

.global-menu-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: none;
    border: none;
    color: white;
    font-size: 30px;
    cursor: pointer;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background 0.2s ease;
}

.global-menu-close:hover {
    background: rgba(255, 255, 255, 0.1);
}

.global-menu-content {
    padding: 20px;
}

.global-menu-section {
    margin-bottom: 30px;
}

.global-menu-section-title {
    color: rgba(255, 255, 255, 0.8);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 12px;
}

.global-menu-item {
    display: block;
    color: white;
    text-decoration: none;
    padding: 12px 15px;
    border-radius: 8px;
    margin-bottom: 8px;
    transition: all 0.2s ease;
    font-size: 15px;
}

.global-menu-item:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateX(5px);
}

.global-menu-item.active {
    background: rgba(255, 255, 255, 0.2);
    font-weight: 600;
}

/* コピーボタンのスタイル */
.copy-button {
    position: absolute;
    top: 8px;
    right: 8px;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background-color: rgba(255, 255, 255, 0.9);
    border: 1px solid #e5e7eb;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    color: #374151;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    z-index: 10;
}

.copy-button:hover {
    background-color: #ffffff;
    border-color: #3b82f6;
    color: #3b82f6;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.15);
}

.copy-button:active {
    transform: scale(0.95);
}

.copy-button.copied {
    background-color: #10b981;
    border-color: #10b981;
    color: white;
}

.copy-button.copied:hover {
    background-color: #059669;
    border-color: #059669;
}

.copy-icon {
    flex-shrink: 0;
}

.copy-text {
    white-space: nowrap;
}

/* コードブロックの親要素の調整 */
.bg-gray-900 {
    position: relative;
}

/* モバイル対応 */
@media (max-width: 640px) {
    .copy-button {
        padding: 4px 8px;
        font-size: 12px;
    }

    .copy-text {
        display: none;
    }
}