.form-group {
    margin-bottom: 25px;
    position: relative;
    animation: fadeInUp 0.5s ease-out;
}

.form-group:nth-child(1) {
    animation-delay: 0.1s;
}

.form-group:nth-child(2) {
    animation-delay: 0.2s;
}

.form-group:nth-child(3) {
    animation-delay: 0.3s;
}

.form-group:nth-child(4) {
    animation-delay: 0.4s;
}

.form-group:nth-child(5) {
    animation-delay: 0.5s;
}

.form-group label {
    display: block;
    margin-bottom: 10px;
    font-weight: 600;
    color: #2c3e50;
    font-size: 1.05rem;
    letter-spacing: 0.5px;
}

.form-group input:not([type="radio"]) {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid #e1e5eb;
    border-radius: 10px;
    font-size: 1.05rem;
    transition: all 0.3s ease;
    background-color: #ffffff;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.03);
}

.form-group input:not([type="radio"]):focus {
    outline: none;
    border-color: #0071e3;
    box-shadow: 0 0 0 3px rgba(0, 113, 227, 0.25), 0 4px 8px rgba(0, 113, 227, 0.15);
}

.form-group input:not([type="radio"]):hover {
    border-color: #c7d0db;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
}

/* 时长输入框组合样式 */
.duration-inputs {
    display: flex;
    gap: 15px;
}

.duration-input-group {
    flex: 1;
    display: flex;
    align-items: center;
    position: relative;
}

.duration-input-group input {
    padding-right: 50px !important; /* 为单位留出空间 */
}

.duration-input-group .unit {
    position: absolute;
    right: 15px;
    color: #6e6e73;
    font-size: 0.9rem;
    pointer-events: none;
}

/* 单选按钮组样式 */
.radio-group {
    display: flex;
    gap: 25px;
    flex-wrap: wrap;
}

.radio-option {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-size: 1.05rem;
    font-weight: 600;
    color: #2c3e50;
    padding: 14px 20px;
    border: 2px solid #e1e5eb;
    border-radius: 12px;
    transition: all 0.3s ease;
    background-color: #ffffff;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
    position: relative;
    overflow: hidden;
}

.radio-option:hover {
    border-color: #0071e3;
    box-shadow: 0 4px 12px rgba(0, 113, 227, 0.15);
}

.radio-option input[type="radio"] {
    margin-right: 10px;
    accent-color: #0071e3;
}

.radio-option input[type="radio"]:checked+.icon {
    color: #0071e3;
}

.radio-option input[type="radio"]:checked {
    background-color: #0071e3;
}

/* 选中状态的单选按钮样式 */
.radio-option input[type="radio"]:checked+.icon+span,
.radio-option input[type="radio"]:checked+span {
    color: #0071e3;
}

.radio-option::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 113, 227, 0.05) 0%, rgba(0, 113, 227, 0) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
}

.radio-option:hover::before {
    opacity: 1;
}

.radio-option input[type="radio"]:checked+.iconfont {
    color: #0071e3;
}

.radio-option input[type="radio"]:checked+.icon {
    color: #0071e3;
}

.submit-btn {
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, #0071e3 0%, #005bbd 100%);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 113, 227, 0.3);
    letter-spacing: 0.5px;
    position: relative;
    overflow: hidden;
}

.submit-btn:hover {
    background: linear-gradient(135deg, #0064cc 0%, #004fa5 100%);
    box-shadow: 0 6px 20px rgba(0, 113, 227, 0.4);
}

.submit-btn:active {
    background: linear-gradient(135deg, #0057b7 0%, #00448f 100%);
    box-shadow: 0 2px 10px rgba(0, 113, 227, 0.3);
}

.submit-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: 0.5s;
}

.submit-btn:hover::before {
    left: 100%;
}

@media (max-width: 768px) {
    /* 表单响应式调整 */
    .form-group {
        margin-bottom: 20px;
    }

    .form-group label {
        font-size: 1rem;
        margin-bottom: 8px;
    }

    .form-group input:not([type="radio"]) {
        padding: 12px 14px;
        font-size: 1rem;
    }

    .radio-group {
        gap: 15px;
    }

    .radio-option {
        padding: 12px 16px;
        font-size: 1rem;
    }

    .submit-btn {
        padding: 14px;
        font-size: 1.05rem;
    }
}

@media (max-width: 480px) {
    /* 表单移动端优化 */
    .form-group {
        margin-bottom: 18px;
    }

    .form-group label {
        font-size: 0.95rem;
        margin-bottom: 6px;
    }

    .form-group input:not([type="radio"]) {
        padding: 10px 12px;
        font-size: 0.95rem;
    }

    .radio-group {
        gap: 10px;
    }

    .radio-option {
        padding: 10px 14px;
        font-size: 0.95rem;
    }

    .submit-btn {
        padding: 12px;
        font-size: 1rem;
    }
}