/* 입문서 정독 PDF 모달 스타일 */

.modal {
    display: none;
    position: fixed;
    z-index: 9999;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    animation: fadeIn 0.3s ease;
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.modal-content {
    background-color: #ffffff;
    border-radius: 16px;
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: slideUp 0.3s ease;
    position: relative;
}

@keyframes slideUp {
    from {
        transform: translateY(30px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 28px;
    font-weight: 300;
    color: #94a3b8;
    cursor: pointer;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.2s;
    z-index: 10;
}

.modal-close:hover {
    background-color: #f1f5f9;
    color: #64748b;
}

.modal-header {
    padding: 32px 32px 24px 32px;
    border-bottom: 1px solid #e2e8f0;
    display: flex;
    align-items: center;
    gap: 12px;
}

.modal-header i {
    font-size: 28px;
    color: #9480c5;
}

.modal-header h2 {
    font-size: 24px;
    font-weight: 700;
    color: #1e293b;
    margin: 0;
}

.modal-body {
    padding: 32px;
}

.intro-book-description {
    font-size: 16px;
    line-height: 1.7;
    color: #475569;
    margin-bottom: 24px;
}

.intro-book-info {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 28px;
}

.intro-book-info p {
    margin: 0;
    font-size: 15px;
    line-height: 1.6;
    color: #334155;
}

.intro-book-info strong {
    font-weight: 600;
    color: #1e293b;
}

.intro-book-info span {
    color: #9480c5;
    font-weight: 600;
}

.intro-book-link {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    padding: 16px 24px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    margin-bottom: 20px;
}

.intro-book-link i {
    font-size: 18px;
}

.intro-book-note {
    font-size: 14px;
    line-height: 1.7;
    color: #64748b;
    background: #f1f5f9;
    border-radius: 8px;
    padding: 14px 16px;
    margin: 0;
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.intro-book-note i {
    color: #9480c5;
    font-size: 16px;
    flex-shrink: 0;
    margin-top: 2px;
}

.modal-footer {
    padding: 20px 32px 32px 32px;
    display: flex;
    justify-content: flex-end;
}

.btn-large {
    padding: 16px 32px;
    font-size: 16px;
}

/* 반응형 */
@media (max-width: 768px) {
    .modal-content {
        width: 95%;
        max-height: 95vh;
    }

    .modal-header {
        padding: 24px 20px 20px 20px;
    }

    .modal-header h2 {
        font-size: 20px;
    }

    .modal-body {
        padding: 24px 20px;
    }

    .modal-footer {
        padding: 16px 20px 24px 20px;
    }

    .intro-book-link {
        padding: 14px 20px;
        font-size: 15px;
    }
}