/**
 * YMY Theme - Product Detail Page Styles
 * Premium minimalist design with clear visual hierarchy
 *
 * @package YMY
 * @since 1.0.0
 */

/* ==========================================================================
   1. Product Overview (Top Section)
   ========================================================================== */

.ymy-page-product {
    padding-bottom: var(--ymy-spacing-3xl);
}

.ymy-product-overview {
    background: var(--ymy-bg-card);
    border-radius: var(--ymy-radius-lg);
    border: 1px solid var(--ymy-border-light);
    box-shadow: var(--ymy-shadow-card);
    display: flex;
    gap: var(--ymy-spacing-2xl);
    padding: var(--ymy-spacing-xl);
    margin-top: var(--ymy-spacing-sm);
}

.ymy-product-preview {
    flex-shrink: 0;
    width: 50%;
    min-height: 300px;
    position: relative;
    background: var(--ymy-bg-elevated);
    border-radius: var(--ymy-radius-md);
    overflow: hidden;
}

.ymy-product-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.ymy-product-preview-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 300px;
    color: var(--ymy-text-muted);
}

.ymy-product-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.ymy-product-name {
    font-size: 1.8em;
    font-weight: 700;
    color: var(--ymy-text-primary);
    line-height: 1.3;
    letter-spacing: -0.02em;
}

.ymy-product-intro {
    color: var(--ymy-text-secondary);
    margin-top: var(--ymy-spacing-sm);
    font-size: var(--ymy-font-size-base);
    line-height: 1.7;
}

.ymy-product-intro p {
    margin: 0;
}

/* ==========================================================================
   2. Pricing
   ========================================================================== */

.ymy-product-pricing {
    margin-top: var(--ymy-spacing-lg);
    display: flex;
    align-items: baseline;
    gap: var(--ymy-spacing-md);
}

.ymy-pricing-label {
    color: var(--ymy-text-muted);
    font-size: var(--ymy-font-size-sm);
}

.ymy-pricing-value {
    font-size: 2em;
    font-weight: 800;
    color: #e53e3e;
    line-height: 1;
}

.ymy-pricing-value .ymy-currency {
    font-size: 0.6em;
    margin-right: 2px;
}

.ymy-pricing-free {
    font-size: 1.6em;
    font-weight: 700;
    color: var(--ymy-accent-secondary);
    background: rgba(72, 187, 120, 0.08);
    padding: 4px 14px;
    border-radius: var(--ymy-radius-sm);
    line-height: 1.3;
}

/* ==========================================================================
   3. Actions
   ========================================================================== */

.ymy-product-actions {
    margin-top: var(--ymy-spacing-lg);
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

/* ==========================================================================
   4. Detail Layout (Sidebar + Main)
   ========================================================================== */

.ymy-product-detail {
    margin-top: var(--ymy-spacing-xl);
    display: flex;
    gap: var(--ymy-spacing-xl);
    align-items: flex-start;
}

.ymy-product-sidebar {
    width: 280px;
    flex-shrink: 0;
    position: sticky;
    top: calc(var(--ymy-header-height, 64px) + 24px);
    background: var(--ymy-bg-card);
    border-radius: var(--ymy-radius-lg);
    border: 1px solid var(--ymy-border-light);
    padding: var(--ymy-spacing-lg);
}

.ymy-product-sidebar h3 {
    font-size: var(--ymy-font-size-lg);
    font-weight: 600;
    color: var(--ymy-text-primary);
    margin-bottom: var(--ymy-spacing-md);
    padding-bottom: var(--ymy-spacing-sm);
    border-bottom: 1px solid var(--ymy-border-light);
}

.ymy-product-main {
    flex: 1;
    min-width: 0;
    background: var(--ymy-bg-card);
    border-radius: var(--ymy-radius-lg);
    border: 1px solid var(--ymy-border-light);
    padding: var(--ymy-spacing-lg);
}

/* ==========================================================================
   5. Info Table
   ========================================================================== */

.ymy-info-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--ymy-font-size-sm);
}

.ymy-info-table td {
    padding: 10px 0;
    border-bottom: 1px solid var(--ymy-border-light);
    vertical-align: top;
    line-height: 1.5;
}

.ymy-info-table tr:last-child td { border-bottom: none; }

.ymy-info-label {
    font-weight: 500;
    color: var(--ymy-text-muted);
    width: 40%;
    white-space: nowrap;
}

/* ==========================================================================
   6. Tabs
   ========================================================================== */

.ymy-tab-nav {
    display: flex;
    gap: 4px;
    border-bottom: 1px solid var(--ymy-border-light);
    margin-bottom: var(--ymy-spacing-lg);
}

.ymy-tab-btn {
    padding: 12px 20px;
    border: none;
    background: none;
    cursor: pointer;
    font-size: var(--ymy-font-size-md);
    font-family: var(--ymy-font-family);
    font-weight: 500;
    color: var(--ymy-text-muted);
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    transition: color var(--ymy-transition-fast), border-color var(--ymy-transition-fast);
    white-space: nowrap;
}

.ymy-tab-btn:hover { color: var(--ymy-text-primary); }

.ymy-tab-btn.ymy-is-active {
    color: var(--ymy-accent);
    border-bottom-color: var(--ymy-accent);
    font-weight: 600;
}

.ymy-tab-content { min-height: 200px; }

.ymy-tab-panel { display: none; }
.ymy-tab-panel.ymy-is-active { display: block; }

/* ==========================================================================
   7. Features Grid
   ========================================================================== */

.ymy-features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--ymy-spacing-md);
}

.ymy-feature-box {
    background: var(--ymy-bg-page);
    border-radius: var(--ymy-radius-md);
    padding: var(--ymy-spacing-lg);
    border: 1px solid var(--ymy-border-light);
    transition: all var(--ymy-transition);
}

.ymy-feature-box:hover {
    border-color: var(--ymy-accent);
    box-shadow: 0 4px 16px rgba(90, 103, 216, 0.06);
}

.ymy-feature-box h4 {
    font-size: var(--ymy-font-size-md);
    font-weight: 600;
    color: var(--ymy-text-primary);
    margin-bottom: 6px;
}

.ymy-feature-box p {
    color: var(--ymy-text-muted);
    font-size: var(--ymy-font-size-sm);
    line-height: 1.6;
    margin: 0;
}

.ymy-empty-note {
    color: var(--ymy-text-muted);
    font-size: var(--ymy-font-size-sm);
    text-align: center;
    padding: var(--ymy-spacing-2xl) 0;
}

/* ==========================================================================
   8. Guide & Update Content
   ========================================================================== */

.ymy-guide-content h4,
.ymy-update-content h4 {
    margin-top: var(--ymy-spacing-lg);
    margin-bottom: var(--ymy-spacing-sm);
    font-size: var(--ymy-font-size-base);
    font-weight: 600;
    color: var(--ymy-text-primary);
}

.ymy-guide-content h4:first-child,
.ymy-update-content h4:first-child { margin-top: 0; }

.ymy-guide-content p,
.ymy-update-content p {
    color: var(--ymy-text-secondary);
    line-height: 1.8;
    margin-bottom: var(--ymy-spacing-sm);
    font-size: var(--ymy-font-size-sm);
}

.ymy-guide-content ol,
.ymy-update-content ol {
    color: var(--ymy-text-secondary);
    line-height: 1.8;
    padding-left: 1.5em;
    margin-bottom: var(--ymy-spacing-md);
    font-size: var(--ymy-font-size-sm);
}

.ymy-guide-content li,
.ymy-update-content li { margin-bottom: 6px; }

.ymy-update-highlight {
    background: rgba(72, 187, 120, 0.06);
    border: 1px solid rgba(72, 187, 120, 0.2);
    border-radius: var(--ymy-radius-md);
    padding: var(--ymy-spacing-md) var(--ymy-spacing-lg);
    margin-bottom: var(--ymy-spacing-md);
}

.ymy-update-highlight h4 {
    color: var(--ymy-accent-secondary);
    margin-top: 0;
}

.ymy-update-notice {
    background: var(--ymy-accent-light);
    border: 1px solid rgba(90, 103, 216, 0.15);
    border-radius: var(--ymy-radius-md);
    padding: var(--ymy-spacing-md) var(--ymy-spacing-lg);
    margin-bottom: var(--ymy-spacing-md);
}

.ymy-update-notice h4 {
    color: var(--ymy-accent);
    margin-top: 0;
}

/* ==========================================================================
   9. Contact Popup (QQ / WeChat)
   ========================================================================== */

.ymy-contact-pop {
    text-align: center;
    padding: var(--ymy-spacing-sm) 0;
}

.ymy-wechat-qr {
    display: block;
    width: 180px;
    height: 180px;
    margin: 0 auto var(--ymy-spacing-md);
    object-fit: contain;
    border: 1px solid var(--ymy-border-light);
    border-radius: var(--ymy-radius-md);
    background: #fff;
}

.ymy-contact-label {
    color: var(--ymy-text-muted);
    font-size: var(--ymy-font-size-sm);
    margin: 0 0 4px;
}

.ymy-contact-value {
    font-size: 1.4em;
    font-weight: 700;
    color: var(--ymy-text-primary);
    margin: 0 0 var(--ymy-spacing-sm);
    letter-spacing: 0.5px;
}

.ymy-contact-tip {
    color: var(--ymy-text-muted);
    font-size: var(--ymy-font-size-sm);
    line-height: 1.6;
    margin: 0 0 var(--ymy-spacing-md);
}

.ymy-contact-actions {
    display: flex;
    gap: 10px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ==========================================================================
   10. Responsive
   ========================================================================== */

@media (max-width: 1024px) {
    .ymy-product-overview {
        flex-direction: column;
        gap: var(--ymy-spacing-lg);
    }

    .ymy-product-preview {
        width: 100%;
        min-height: 240px;
    }

    .ymy-product-detail {
        flex-direction: column;
    }

    .ymy-product-sidebar {
        width: 100%;
        position: static;
    }

    .ymy-features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .ymy-product-overview {
        padding: var(--ymy-spacing-md);
    }

    .ymy-product-preview { min-height: 200px; }
    .ymy-product-name { font-size: 1.4em; }
    .ymy-pricing-value { font-size: 1.5em; }

    .ymy-product-actions {
        flex-direction: column;
    }

    .ymy-product-actions .ymy-btn {
        width: 100%;
        justify-content: center;
    }

    .ymy-product-main { padding: var(--ymy-spacing-md); }

    .ymy-tab-btn {
        padding: 10px 14px;
        font-size: var(--ymy-font-size-sm);
    }

    .ymy-features-grid {
        grid-template-columns: 1fr;
    }
}