/* ==================== 产品介绍区域 ==================== */
/*lawsuit_generator/static/css/product-intro.css*/
.product-intro {
    padding: 40px 0;
    background: linear-gradient(180deg, var(--white) 0%, var(--gray-50) 100%);
    animation: fadeIn 0.6s ease-out;
}

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

.intro-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    padding: 48px;
    border: 1px solid var(--border-color);
}

/* 头部区域 */
.intro-header {
    text-align: center;
    margin-bottom: 48px;
}

.intro-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 72px;
    height: 72px;
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-700) 100%);
    border-radius: var(--radius-xl);
    margin-bottom: 24px;
    box-shadow: 0 8px 16px rgba(59, 130, 246, 0.3);
}

.intro-icon svg {
    width: 40px;
    height: 40px;
    color: var(--white);
}

.intro-title {
    font-size: 32px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 12px;
    line-height: 1.3;
}

.intro-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 功能特点区域 */
.intro-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-bottom: 48px;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 24px;
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    transition: all var(--transition);
}

.feature-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-200);
    background: var(--white);
}

.feature-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary-100) 0%, var(--primary-200) 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon svg {
    width: 24px;
    height: 24px;
    color: var(--primary-600);
}

.feature-content {
    flex: 1;
}

.feature-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 6px;
}

.feature-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 使用流程区域 */
.intro-steps {
    background: linear-gradient(135deg, var(--primary-50) 0%, var(--primary-100) 100%);
    border-radius: var(--radius-lg);
    padding: 32px;
    margin-bottom: 32px;
}

.steps-title {
    font-size: 24px;
    font-weight: 600;
    color: var(--gray-900);
    text-align: center;
    margin-bottom: 32px;
}

.steps-subtitle {
    font-size: 16px;
    font-weight: 400;
    color: var(--text-secondary);
    margin-left: 12px;
}

.steps-list {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
}

.step-item {
    flex: 1;
    min-width: 140px;
    background: var(--white);
    border-radius: var(--radius-md);
    padding: 20px 16px;
    text-align: center;
    border: 2px solid var(--primary-200);
    transition: all var(--transition);
}

.step-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-500);
}

.step-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-700) 100%);
    color: var(--white);
    font-size: 20px;
    font-weight: 700;
    border-radius: 50%;
    margin-bottom: 12px;
}

.step-name {
    font-size: 16px;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 6px;
}

.step-detail {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.4;
}

.step-arrow {
    flex-shrink: 0;
    font-size: 24px;
    color: var(--primary-500);
    font-weight: 700;
}

/* 行动号召区域 */
.intro-cta {
    text-align: center;
    padding-top: 16px;
}

.btn-start {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-700) 100%);
    color: var(--white);
    font-size: 18px;
    font-weight: 600;
    padding: 16px 48px;
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
}

.btn-start:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(59, 130, 246, 0.5);
}

.btn-start:active {
    transform: translateY(0);
}

.btn-start .btn-icon {
    width: 20px;
    height: 20px;
}

.cta-hint {
    margin-top: 16px;
    font-size: 14px;
    color: var(--text-secondary);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .intro-card {
        padding: 36px;
    }

    .intro-title {
        font-size: 28px;
    }

    .intro-subtitle {
        font-size: 16px;
    }

    .intro-features {
        grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
        gap: 20px;
    }
}

@media (max-width: 768px) {
    .product-intro {
        padding: 24px 0;
    }

    .intro-card {
        padding: 24px;
    }

    .intro-header {
        margin-bottom: 32px;
    }

    .intro-icon {
        width: 60px;
        height: 60px;
        margin-bottom: 20px;
    }

    .intro-icon svg {
        width: 32px;
        height: 32px;
    }

    .intro-title {
        font-size: 24px;
    }

    .intro-subtitle {
        font-size: 15px;
    }

    .intro-features {
        grid-template-columns: 1fr;
        gap: 16px;
        margin-bottom: 32px;
    }

    .feature-item {
        padding: 20px;
    }

    .feature-icon {
        width: 44px;
        height: 44px;
    }

    .feature-icon svg {
        width: 22px;
        height: 22px;
    }

    .feature-title {
        font-size: 16px;
    }

    .feature-desc {
        font-size: 13px;
    }

    .intro-steps {
        padding: 24px 16px;
        margin-bottom: 24px;
    }

    .steps-title {
        font-size: 20px;
        margin-bottom: 24px;
    }

    .steps-subtitle {
        display: block;
        margin-left: 0;
        margin-top: 8px;
        font-size: 14px;
    }

    .steps-list {
        flex-direction: column;
        gap: 16px;
    }

    .step-item {
        width: 100%;
        min-width: auto;
    }

    .step-arrow {
        transform: rotate(90deg);
        font-size: 20px;
    }

    .btn-start {
        width: 100%;
        font-size: 16px;
        padding: 14px 32px;
        justify-content: center;
    }
}