/*
  File: template_guidance.css
  Update Date: 2025-06-26
  Brand: PackRapid
  Description: A modular CSS stylesheet implementing the PackRapid visual identity (AI-native).
*/

/* ==========================================================================
   1. Brand Style Variables (Based on info_visual.md for PackRapid AI-native)
   ========================================================================== */

html, body {
overflow-x: hidden;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}


:root {
    /* Colors */
    --packrapid-color-primary: #044343; /* 智能深绿，主色 */
    --packrapid-color-primary-dark: #033535; /* 主色悬停加深 */
    --packrapid-color-accent: #008080;    /* 深邃青蓝，辅助/行动色 */
    --packrapid-color-accent-dark: #006666; /* 辅助色悬停加深 */
    --packrapid-color-text-dark: #1a1a1a;   /* 主要文本颜色 (近黑) */
    --packrapid-color-text-light: #FFFFFF; /* 浅色文本 */
    --packrapid-color-text-muted: #6c757d;  /* 辅助性文本颜色 (Bootstrap default for consistency) */
    --packrapid-color-background-main: #F5F7FA; /* 主页面背景 (冷调浅灰) */
    --packrapid-color-background-content: #FFFFFF; /* 内容/卡片背景 (纯白) */
    --packrapid-color-border: #E1E5EB;       /* 边框/分割线 */
    --packrapid-color-footer-bg: #222222;     /* 页脚背景 (remains dark for contrast) */
    --packrapid-color-footer-text: #a0a0a0;   /* 页脚文本 */

    /* Typography */
    --packrapid-font-family-heading: 'Inter', sans-serif;
    --packrapid-font-family-body: 'Inter', sans-serif;
    --packrapid-font-family-mono: 'IBM Plex Mono', monospace; /* For code snippets/AI output simulation */
    --packrapid-font-size-base: 1rem; /* 16px */
    --packrapid-line-height-base: 1.6; /* Adjusted from 1.65 to 1.6 for 'Inter' */
    
    /* Spacing (based on 8px grid system) */
    --packrapid-spacing-xs: 0.25rem;  /* 4px */
    --packrapid-spacing-sm: 0.5rem;   /* 8px */
    --packrapid-spacing-md: 1rem;     /* 16px */
    --packrapid-spacing-lg: 1.5rem;   /* 24px */
    --packrapid-spacing-xl: 2rem;     /* 32px */
    --packrapid-spacing-xxl: 5rem;    /* 80px */
    --packrapid-spacing-xxxl: 7.5rem; /* 120px */

    /* UI Elements */
    --packrapid-border-radius-sm: 4px;
    --packrapid-border-radius-md: 6px; /* 主要圆角，保持锐利 */
    --packrapid-border-radius-lg: 8px;
    --packrapid-box-shadow: 0 4px 12px rgba(26, 26, 26, 0.08); /* 更柔和、低饱和度的阴影 */
    --packrapid-transition: all 0.3s ease-in-out;


     /* Header Specific (Keep as is, not directly affected by info_visual.md yet) */
    --pr-header-height: 70px; 
    --pr-header-z-index: 1020;
    --pr-navbar-collapse-z-index: 1010;
    --pr-dropdown-z-index: 1000;
    --pr-mobile-submenu-z-index: 1050;
}

/* ==========================================================================
   2. Global Styles & Resets
   ========================================================================== */

body {
    font-family: var(--packrapid-font-family-body);
    font-size: var(--packrapid-font-size-base);
    line-height: var(--packrapid-line-height-base);
    color: var(--packrapid-color-text-dark);
    background-color: var(--packrapid-color-background-main);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6, .navbar-brand {
    font-family: var(--packrapid-font-family-heading);
    font-weight: 700; /* H1, H2 use 700 */
    line-height: 1.3;
    color: var(--packrapid-color-text-dark);
}
h3, h4 {
    font-weight: 600; /* H3, H4 use 600 */
}

a {
    color: var(--packrapid-color-primary);
    text-decoration: none;
    transition: var(--packrapid-transition);
}

a:hover {
    color: var(--packrapid-color-accent); /* Links hover to accent color */
    text-decoration: none;
}

section {
    padding: var(--packrapid-spacing-xxl) 0; /* Standard section padding */
}
@media (min-width: 992px) {
    section {
        padding: var(--packrapid-spacing-xxxl) 0; /* Larger padding on desktop */
    }
}


/* ==========================================================================
   3. UI Component Styles
   ========================================================================== */
.btn {
    border-radius: var(--packrapid-border-radius-md); /* Smaller, sharper corners */
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    font-family: var(--packrapid-font-family-heading);
    letter-spacing: 0.5px;
    transition: var(--packrapid-transition);
    border-width: 2px; /* Slight increase for visual weight */
}

.btn-lg {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
}

.btn-primary {
    background-color: var(--packrapid-color-primary);
    border-color: var(--packrapid-color-primary);
    color: var(--packrapid-color-text-light);
}

.btn-primary:hover {
    background-color: var(--packrapid-color-primary-dark);
    border-color: var(--packrapid-color-primary-dark);
    color: var(--packrapid-color-text-light);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.btn-outline-primary {
    color: var(--packrapid-color-primary);
    border-color: var(--packrapid-color-primary);
}

.btn-outline-primary:hover {
    background-color: var(--packrapid-color-primary);
    border-color: var(--packrapid-color-primary);
    color: var(--packrapid-color-text-light);
}

.btn-secondary { /* Adjusted for a modern look, less bold */
    background-color: transparent;
    border-color: var(--packrapid-color-border);
    color: var(--packrapid-color-text-dark);
}

.btn-secondary:hover {
    background-color: var(--packrapid-color-primary);
    border-color: var(--packrapid-color-primary);
    color: var(--packrapid-color-text-light);
}

.btn-accent {
    background-color: var(--packrapid-color-accent);
    border-color: var(--packrapid-color-accent);
    color: var(--packrapid-color-text-light);
}
.btn-accent:hover {
    background-color: var(--packrapid-color-accent-dark);
    border-color: var(--packrapid-color-accent-dark);
    color: var(--packrapid-color-text-light);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1); /* Slight shadow for lift */
}

/* Form controls focus */
.form-control:focus, .form-select:focus {
    border-color: var(--packrapid-color-accent);
    box-shadow: 0 0 0 0.25rem rgba(0, 128, 128, 0.25); /* Accent color glow */
}


/* 1. Hero Section */
.hero-section {
    background-color: var(--packrapid-color-background-content);
    min-height: 80vh;
    display: flex;
    align-items: center;
    padding-top: var(--packrapid-spacing-xxl); /* Ensure padding for smaller screens */
    padding-bottom: var(--packrapid-spacing-xxl);
}
.hero-section .display-4 {
    font-weight: 700;
}
.hero-section .lead {
    max-width: 700px;
    margin: var(--packrapid-spacing-lg) auto;
    color: var(--packrapid-color-text-muted);
}
.hero-section .btn {
    margin: 0 var(--packrapid-spacing-sm);
}

/* 2. USP Section */
.usp-section { background-color: var(--packrapid-color-background-main); }
.usp-item .usp-icon {
    font-size: 2.8rem; /* Slightly larger icons */
    color: var(--packrapid-color-accent); /* Use accent color for icons */
    margin-bottom: var(--packrapid-spacing-lg);
}
.usp-item h5 { font-weight: 700; margin-bottom: var(--packrapid-spacing-sm); }
.usp-item p { font-size: 0.9rem; color: var(--packrapid-color-text-muted); }

/* 3. Product Showcase Section */
.product-showcase-section { background-color: var(--packrapid-color-background-content); }
.product-category-card {
    background-color: var(--packrapid-color-background-main);
    border-radius: var(--packrapid-border-radius-lg);
    overflow: hidden;
    box-shadow: var(--packrapid-box-shadow);
    transition: var(--packrapid-transition);
    height: 100%;
}
.product-category-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 24px rgba(26, 26, 26, 0.12); /* Adjusted shadow for AI-native */
}
.product-category-card img {
    width: 100%;
    height: 300px;
    object-fit: cover;
}
.product-category-card .card-body { padding: var(--packrapid-spacing-xl); }

/* 4. Process Section */
.process-section { background-color: var(--packrapid-color-background-main); }
.process-step {
    text-align: center;
    position: relative;
    padding: var(--packrapid-spacing-md);
}
.process-step .step-number {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    font-size: 4.5rem; /* Larger, more impactful numbers */
    font-weight: 700;
    color: rgba(26,26,26,0.05); /* Darker, subtle number */
    z-index: 1;
}
.process-step .step-icon, .process-step h4, .process-step p {
    position: relative;
    z-index: 2;
}
.process-step .step-icon {
    font-size: 3.2rem; /* Slightly larger icons */
    color: var(--packrapid-color-accent);
    margin-bottom: var(--packrapid-spacing-md);
    margin-top: var(--packrapid-spacing-xl);
}
.process-step p { color: var(--packrapid-color-text-muted); }
@media (min-width: 768px) {
    .process-step:not(:last-child)::after {
        content: '';
        position: absolute;
        top: 6rem;
        right: -50%;
        width: 100%;
        height: 2px;
        border-top: 2px dashed var(--packrapid-color-border);
        z-index: 0;
    }
}


/* 5. Testimonial Section */
.testimonial-section { background-color: var(--packrapid-color-background-content); }
.testimonial-content { padding-left: var(--packrapid-spacing-xl); }
.quote-wrapper {
    position: relative;
    padding: var(--packrapid-spacing-lg);
    background-color: var(--packrapid-color-background-main);
    border-left: 4px solid var(--packrapid-color-accent); /* Accent color for quote border */
    border-radius: var(--packrapid-border-radius-sm);
}
.quote-wrapper .fa-quote-left {
    position: absolute;
    top: -1rem;
    left: var(--packrapid-spacing-lg);
    font-size: 2.5rem;
    color: var(--packrapid-color-accent);
    opacity: 0.2; /* Slightly more subtle */
}
.quote-wrapper blockquote {
    font-size: 1.1rem;
    font-style: italic;
    margin-bottom: var(--packrapid-spacing-lg);
}
.quote-wrapper cite {
    font-style: normal;
    display: block;
}
.quote-wrapper cite span {
    display: block;
    font-size: 0.9rem;
    color: var(--packrapid-color-text-muted);
}

/* 6. Sustainability Commitment Section */
.sustainability-section { background-color: var(--packrapid-color-background-main); }

/* 6. Inspiration Gallery Section (新增) */
.inspiration-gallery-section {
    background-color: var(--packrapid-color-background-content);
    padding: var(--packrapid-spacing-xxxl) 0; /* Larger padding */
}
.inspiration-gallery-wrapper {
    display: flex;
    gap: var(--packrapid-spacing-lg);
    height: 600px; 
    overflow: hidden;
    position: relative;
    /* Updated mask image to match new background color system */
    -webkit-mask-image: linear-gradient(to bottom, transparent 0%, rgba(0,0,0,0.8) 15%, rgba(0,0,0,0.8) 85%, transparent 100%);
    mask-image: linear-gradient(to bottom, transparent 0%, rgba(0,0,0,0.8) 15%, rgba(0,0,0,0.8) 85%, transparent 100%);
}
.inspiration-gallery-wrapper:hover .inspiration-column {
    animation-play-state: paused;
}
.inspiration-column {
    display: flex;
    flex-direction: column;
    gap: var(--packrapid-spacing-lg);
    min-width: 250px;
    flex-shrink: 0;
    animation: scroll-up 40s linear infinite;
}
.inspiration-column-reverse {
    animation: scroll-down 40s linear infinite;
}
.inspiration-item img {
    width: 100%;
    height: auto;
    border-radius: var(--packrapid-border-radius-lg);
    box-shadow: var(--packrapid-box-shadow);
    object-fit: cover;
    transition: var(--packrapid-transition);
}
.inspiration-item img:hover {
    transform: scale(1.03);
    box-shadow: 0 8px 24px rgba(26, 26, 26, 0.15); /* Adjusted shadow */
}

@keyframes scroll-up {
    from {
        transform: translateY(0);
    }
    to {
        transform: translateY(-50%);
    }
}
@keyframes scroll-down {
    from {
        transform: translateY(-50%);
    }
    to {
        transform: translateY(0);
    }
}

/* 7. Final CTA Section */
.final-cta-section {
    background-color: var(--packrapid-color-primary); /* Primary color background */
    color: var(--packrapid-color-text-light);
}
.final-cta-section h2, .final-cta-section .lead {
    color: var(--packrapid-color-text-light);
}




/* Footer */
.footer {
    background-color: var(--packrapid-color-footer-bg);
    color: var(--packrapid-color-footer-text);
    padding: var(--packrapid-spacing-xxl) 0 0;
}
.footer h5, .footer h6 {
    color: var(--packrapid-color-text-light);
    font-family: var(--packrapid-font-family-heading);
    margin-bottom: var(--packrapid-spacing-lg);
}
.footer a {
    color: var(--packrapid-color-footer-text);
}
.footer a:hover {
    color: var(--packrapid-color-accent); /* Hover to accent color */
}
.footer .social-icons a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: 1px solid var(--packrapid-color-footer-text);
    border-radius: 50%;
    margin-right: var(--packrapid-spacing-sm);
    transition: var(--packrapid-transition);
}
.footer .social-icons a:hover {
    background-color: var(--packrapid-color-accent);
    border-color: var(--packrapid-color-accent);
    color: var(--packrapid-color-text-light);
}
.footer .contact-info i {
    color: var(--packrapid-color-accent); /* Accent for contact icons */
    margin-right: var(--packrapid-spacing-md);
}
.footer .footer-credits {
    border-top: 1px solid #444; /* Keep dark border for contrast */
    padding: var(--packrapid-spacing-lg) 0;
    margin-top: var(--packrapid-spacing-xl);
}
.footer .footer-credits p { margin: 0; }

/* ==========================================================================
   8. FAQ Section (已修正)
   ========================================================================== */
.faq-section { background-color: var(--packrapid-color-background-main); }

.accordion-item {
    background-color: var(--packrapid-color-background-content);
    border: 1px solid var(--packrapid-color-border) !important;
    border-radius: var(--packrapid-border-radius-md) !important; /* Sharper corners */
    margin-bottom: var(--packrapid-spacing-md);
    box-shadow: var(--packrapid-box-shadow);
    transition: var(--packrapid-transition);
    overflow: hidden; 

}
.accordion-item:hover {
    border-color: var(--packrapid-color-primary) !important; /* Hover primary color */
}

.accordion-header {
    border-radius: var(--packrapid-border-radius-md) !important;
}

.accordion-button {
    font-family: var(--packrapid-font-family-heading);
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--packrapid-color-text-dark);
    background-color: var(--packrapid-color-background-content);
    box-shadow: none;
    border-radius: var(--packrapid-border-radius-md) !important;
    padding-top: 1.25rem;
    padding-bottom: 1.25rem;
    transition: var(--packrapid-transition);
}
.accordion-button:not(.collapsed) {
    color: var(--packrapid-color-primary);
    background-color: var(--packrapid-color-background-main); /* Lighter background when open */
    box-shadow: inset 0 -1px 0 var(--packrapid-color-border); 
}
.accordion-button:focus {
    box-shadow: 0 0 0 0.25rem rgba(4, 67, 67, 0.25);
}


.accordion-button::after {
    flex-shrink: 0;
    margin-left: auto;
    content: ''; 
    
    width: 1.5rem; /* Smaller icon */
    height: 1.5rem;
    /* Linear icon style */
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%231a1a1a' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpath d='M6 9l6 6 6-6'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: center;
    background-size: 100%;
    transition: transform 0.2s ease-in-out;
}

.accordion-button:not(.collapsed)::after {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23044343' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpath d='M6 15l6-6 6 6'/%3e%3c/svg%3e"); /* Primary color when open */
    transform: rotate(-180deg); 
}
.accordion-body {
    padding: var(--packrapid-spacing-lg);
    color: var(--packrapid-color-text-muted);
}



/* ==========================================================================
    Breadcrumbs (面包屑)
   ========================================================================== */
.breadcrumb-custom {
    padding: var(--packrapid-spacing-lg) 0;
    margin: 0;
    font-size: 0.9rem;
    font-family: var(--packrapid-font-family-body);
    
}
.breadcrumb-custom .breadcrumb-item a {
    color: var(--packrapid-color-text-dark);
    font-weight: 600;
    text-overflow: ellipsis;
    overflow: hidden;
    word-break: break-all;
    white-space: nowrap;
    max-width: 250px;
}
.breadcrumb-custom .breadcrumb-item a:hover {
    color: var(--packrapid-color-primary);
}
.breadcrumb-custom .breadcrumb-item.active {
    color: var(--packrapid-color-text-muted);
}
.breadcrumb-custom .breadcrumb-item+.breadcrumb-item::before {
    content: "/";
    color: var(--packrapid-color-text-muted);
    padding: 0 var(--packrapid-spacing-sm);
}





/* ==========================================================================
   2. Sidebar Filters (筛选侧边栏)
   ========================================================================== */
.sidebar-filter {
    padding-right: var(--packrapid-spacing-xl);
}
.filter-group {
    margin-bottom: var(--packrapid-spacing-xl);
}
.filter-group-title {
    font-family: var(--packrapid-font-family-heading);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: var(--packrapid-spacing-md);
    padding-bottom: var(--packrapid-spacing-sm);
    border-bottom: 1px solid var(--packrapid-color-border);
}
.filter-list {
    list-style: none;
    padding-left: 0;
}
.filter-list li a {
    display: block;
    padding: var(--packrapid-spacing-sm) 0;
    color: var(--packrapid-color-text-dark);
    transition: var(--packrapid-transition);
}
.filter-list li a:hover,
.filter-list li a.active {
    color: var(--packrapid-color-primary);
    font-weight: 600;
}

.form-check-label {
    font-size: 0.95rem;
}
.form-check-input:checked {
    background-color: var(--packrapid-color-primary);
    border-color: var(--packrapid-color-primary);
}
.form-check-input:focus {
    box-shadow: 0 0 0 0.25rem rgba(4, 67, 67, 0.25);
}


/* ==========================================================================
   3. Product Grid & Cards (产品网格与卡片)
   ========================================================================== */
.product-card {
    background-color: var(--packrapid-color-background-content);
    border: 1px solid var(--packrapid-color-border);
    border-radius: var(--packrapid-border-radius-lg);
    transition: var(--packrapid-transition);
    overflow: hidden;
    height: 100%;
    display: flex;
    flex-direction: column;
    position: relative;
}
.product-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--packrapid-box-shadow);
    border-color: var(--packrapid-color-primary);
}
.product-card-img {
    background-color: var(--packrapid-color-background-main); /* Match main background for placeholders */
    aspect-ratio: 4 / 3;
    display: flex;
    align-items: center;
    justify-content: center;
}
.product-card-img img {
    max-width: 100%;
    max-height: 100%;
    object-fit: cover;
}
.product-card-body {
    padding: var(--packrapid-spacing-lg);
    flex-grow: 1;
}
.product-card-title {
    font-family: var(--packrapid-font-family-heading);
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--packrapid-color-text-dark);
    margin-bottom: var(--packrapid-spacing-sm);
}
.product-card-title:hover {
    color: var(--packrapid-color-primary);
}
.product-card-subtitle {
    font-size: 0.9rem;
    color: var(--packrapid-color-text-muted);
}
.product-card-tag {
    position: absolute;
    top: var(--packrapid-spacing-md);
    left: var(--packrapid-spacing-md);
    background-color: var(--packrapid-color-primary);
    color: var(--packrapid-color-text-light);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.25rem 0.6rem;
    border-radius: var(--packrapid-border-radius-sm);
    text-transform: uppercase;
}

/* ==========================================================================
   4. Promo Banner (推广横幅)
   ========================================================================== */
.promo-banner {
    background-color: #eef7f7; /* Light tint of primary color */
    border-radius: var(--packrapid-border-radius-lg);
    padding: var(--packrapid-spacing-xl);
    text-align: center;
}
.promo-banner h5 {
    color: var(--packrapid-color-primary);
    font-weight: 700;
}
.promo-banner i {
    font-size: 4rem;
    color: var(--packrapid-color-accent);
    opacity: 0.5;
    margin-top: var(--packrapid-spacing-md);
}

/* ==========================================================================
   5. Product Detail Page (产品详情页)
   ========================================================================== */
.product-gallery-main {
    border-radius: var(--packrapid-border-radius-lg);
    background-color: var(--packrapid-color-background-content);
    border: 1px solid var(--packrapid-color-border);
    padding: var(--packrapid-spacing-sm);
}
.product-gallery-thumbnails img {
    border: 2px solid transparent;
    border-radius: var(--packrapid-border-radius-md);
    cursor: pointer;
    transition: var(--packrapid-transition);
}
.product-gallery-thumbnails img:hover,
.product-gallery-thumbnails img.active {
    border-color: var(--packrapid-color-primary);
}

.product-info-title {
    font-size: 2.5rem;
    font-weight: 700;
}
.product-config-group {
    margin-bottom: var(--packrapid-spacing-lg);
}
.product-config-group label {
    font-weight: 600;
    margin-bottom: var(--packrapid-spacing-sm);
}
.product-accordion .accordion-button {
    font-weight: 600;
}



/* ==========================================================================
   Blog Pages & Components
   ========================================================================== */
.blog-filters {
    text-align: center;
}
.blog-filters .btn {
    margin: 0 0.25rem 0.5rem;
    border-radius: 99px; /* Rounded capsule button */
    font-weight: 600;
}
.blog-filters .btn-outline-secondary {
    border-color: var(--packrapid-color-border);
    color: var(--packrapid-color-text-dark);
}
.blog-filters .btn-outline-secondary:hover {
     background-color: #eef7f7; /* Light primary tint */
     border-color: #eef7f7;
     color: var(--packrapid-color-primary);
}

.featured-post.card {
    border: none;
    background-color: var(--packrapid-color-background-main); /* Use main background for featured */
    border-radius: var(--packrapid-border-radius-lg);
    overflow: hidden;
    box-shadow: var(--packrapid-box-shadow); /* Add shadow to featured post */
}
.featured-post:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 24px rgba(26, 26, 26, 0.12);
}

.featured-post-img-container {
    overflow: hidden;
    background-color: var(--packrapid-color-background-main);
}
.featured-post-img-container img {
    transition: transform 0.4s ease-in-out;
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.featured-post:hover .featured-post-img-container img {
    transform: scale(1.05);
}

.blog-card {
    border: none;
    background-color: var(--packrapid-color-background-content);
    border-radius: var(--packrapid-border-radius-lg);
    box-shadow: var(--packrapid-box-shadow);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}
.blog-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 24px rgba(26, 26, 26, 0.12);
}


.blog-card .card-img-container {
    height: 220px;
    overflow: hidden;
    border-top-left-radius: var(--packrapid-border-radius-lg);
    border-top-right-radius: var(--packrapid-border-radius-lg);
}
.blog-card .card-img-top {
    width: 100%;
    height: 100%;
    object-fit: cover; 
    transition: transform 0.4s ease-in-out;
}
.blog-card:hover .card-img-top {
    transform: scale(1.05);
}

.blog-post-header {
    text-align: center;
    padding: var(--packrapid-spacing-xl) 0;
    border-bottom: 1px solid var(--packrapid-color-border);
    margin-bottom: var(--packrapid-spacing-xl);
}
.blog-post-title {
    font-size: 3rem;
    font-weight: 700;
}
.blog-post-meta {
    color: var(--packrapid-color-text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    font-size: 0.95rem;
}
.blog-post-meta a {
    color: var(--packrapid-color-primary);
    font-weight: 600;
}

.meta-author-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    object-fit: cover;
    margin-right: 0.5rem;
    border: 1px solid var(--packrapid-color-border);
}

.blog-post-content {
    line-height: var(--packrapid-line-height-base);
}
.blog-post-content h2,
.blog-post-content h3 {
    font-family: var(--packrapid-font-family-heading);
    font-weight: 700;
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    color: var(--packrapid-color-text-dark);
}
.blog-post-content p {
    margin-bottom: 1.5rem;
    color: var(--packrapid-color-text-dark);
}
.blog-post-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--packrapid-border-radius-lg);
    margin: 2rem 0;
}
.blog-post-content blockquote {
    border-left: 4px solid var(--packrapid-color-accent); /* Accent color for blockquote */
    padding-left: var(--packrapid-spacing-lg);
    margin: 2rem 0;
    font-style: italic;
    color: var(--packrapid-color-text-muted);
}

.author-info-box {
    background-color: var(--packrapid-color-background-main);
    border: 1px solid var(--packrapid-color-border);
    border-radius: var(--packrapid-border-radius-lg);
    padding: var(--packrapid-spacing-xl);
    margin-top: var(--packrapid-spacing-xxl);
    box-shadow: var(--packrapid-box-shadow);
}
.author-info-box img {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0px !important;
}



/* ==========================================================================
   7. Pagination Styles 
   ========================================================================== */
.pagination {
    --bs-pagination-border-width: 0;
    --bs-pagination-hover-border-color: transparent;
    --bs-pagination-focus-box-shadow: 0 0 0 0.25rem rgba(0, 128, 128, 0.25); /* Accent color focus */
    --bs-pagination-disabled-bg: var(--packrapid-color-background-main);
    --bs-pagination-disabled-color: var(--packrapid-color-border);
    gap: 0.5rem; /* Increase button spacing */
}
.pagination .page-link {
    border-radius: var(--packrapid-border-radius-md); /* Sharper corners */
    background-color: var(--packrapid-color-background-content);
    border: 1px solid var(--packrapid-color-border);
    color: var(--packrapid-color-text-dark);
    font-weight: 600;
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--packrapid-transition);
}
.pagination .page-link:hover {
    background-color: #eef7f7; /* Light primary tint */
    border-color: #eef7f7;
    color: var(--packrapid-color-primary);
}
.pagination .page-item.active .page-link {
    background-color: var(--packrapid-color-primary);
    border-color: var(--packrapid-color-primary);
    color: var(--packrapid-color-text-light);
}
.pagination .page-item.disabled .page-link {
    border-color: var(--packrapid-color-border);
}

.pagination .page-item.disabled .page-link.ellipsis {
    background-color: transparent;
    border-color: transparent;
}

/* post navigation */

.post-navigation {
    border-top: 1px solid var(--packrapid-color-border);
    margin-top: var(--packrapid-spacing-xxl);
    padding-top: var(--packrapid-spacing-xl);
}
.post-nav-link {
    color: var(--packrapid-color-text-dark);
    font-weight: 600;
    text-overflow: ellipsis;
    overflow: hidden;
    word-break: break-all;
    white-space: nowrap;
}
.post-nav-link:hover {
    color: var(--packrapid-color-primary);
}

.blog-post-featured-image-container{
    height: 450px; 
    border-radius: var(--packrapid-border-radius-lg);
    overflow: hidden;
    margin: 0 0 var(--packrapid-spacing-xl) 0;
    background-color: var(--packrapid-color-background-main); 
    box-shadow: var(--packrapid-box-shadow); /* Add shadow to featured image */
}

.blog-post-featured-image-container img {
    width: 100%;
    height: 100%;
    object-fit: cover; 
    transition: transform 0.4s ease;
}
.blog-post-featured-image-container:hover img {
    transform: scale(1.05);
}


/* Filter Style */
.blog-filters .filter-btn {
    border: 1px solid var(--packrapid-color-border);
    color: var(--packrapid-color-text-dark);
    font-weight: 500;
    padding: 0.5rem 1.2rem;
    border-radius: var(--packrapid-border-radius-md);
    text-decoration: none;
    transition: var(--packrapid-transition);
}
.blog-filters .filter-btn:hover {
    border-color: var(--packrapid-color-primary);
    color: var(--packrapid-color-primary);
    background-color: #f0f5f5; /* Light primary tint */
}
.blog-filters .filter-btn.active {
    border-color: var(--packrapid-color-primary);
    color: var(--packrapid-color-primary);
    font-weight: 600;
}

/* bootstrap utility overrides */
/* Adjust padding for bootstrap py-5 to use new spacing var for consistency */
.py-5 {
    padding-top: var(--packrapid-spacing-xxl) !important;
    padding-bottom: var(--packrapid-spacing-xxl) !important;
}
@media (min-width: 992px) {
    .py-5 {
        padding-top: var(--packrapid-spacing-xxxl) !important;
        padding-bottom: var(--packrapid-spacing-xxxl) !important;
    }
}


        /* Header Styles */
        .pr-header {
            background-color: var(--packrapid-color-background-content);
            box-shadow: var(--packrapid-box-shadow);
            position: sticky;
            top: 0;
            z-index: var(--pr-header-z-index);
        }

        .pr-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .pr-navbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: var(--pr-header-height);
            padding: 10px 0;
            position: relative;
        }

        .pr-logo {
            font-size: 28px;
            font-weight: 700;
            font-family: var(--packrapid-font-family-heading);
            color: var(--packrapid-color-primary);
            text-decoration: none;
            transition: var(--packrapid-transition);
        }

        .pr-logo:hover {
            color: var(--packrapid-color-primary-dark);
        }

        .pr-nav {
            display: flex;
            list-style: none;
            align-items: center;
            gap: 40px;
        }


        .pr-nav-link {
            color: var(--packrapid-color-text-dark);
            text-decoration: none;
            font-weight: 600;
            font-size: 16px;
            padding: 10px 0;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: var(--packrapid-transition);
            position: relative;
        }

        .pr-nav-link:hover {
            color: var(--packrapid-color-primary);
        }

        .pr-nav-link::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background-color: var(--packrapid-color-primary);
            transition: var(--packrapid-transition);
        }

        .pr-nav-link:hover::after,
        .pr-nav-item:hover .pr-nav-link::after {
            width: 100%;
        }
        
        .pr-dropdown-icon {
            font-size: 12px;
            transition: transform 0.3s ease-in-out;
        }

        .pr-nav-item:hover .pr-dropdown-icon {
            transform: rotate(180deg);
        }

        /* Mega Menu Styles */
        .pr-mega-menu {
            position: absolute;
            top: 100%;
            left: 50%;
            height: auto;
            min-height: 0;
            width: 100vw;
            overflow-x: hidden; /* Changed from none to hidden for consistency */
            background-color: var(--packrapid-color-background-content);
            box-shadow: var(--packrapid-box-shadow);
            opacity: 0;
            visibility: hidden;
            transform: translateX(-50%) translateY(10px);
            transition: opacity 0.3s ease-in-out, visibility 0.3s ease-in-out, transform 0.3s ease-in-out;
            z-index: var(--pr-dropdown-z-index);
            border-top: 3px solid var(--packrapid-color-primary);
        }

        .pr-nav-item:hover .pr-mega-menu {
            opacity: 1;
            visibility: visible;
            transform: translateX(-50%) translateY(0);
        }

        .pr-mega-content {
            max-width: 1200px;
            margin: 0 auto;
            padding: 40px 20px;
        }

        .pr-mega-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 40px;
        }

        .pr-mega-column h3 {
            font-family: var(--packrapid-font-family-heading);
            font-size: 18px;
            font-weight: 600;
            color: var(--packrapid-color-primary);
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--packrapid-color-accent);
            position: relative;
        }

        .pr-mega-column h3 a {
            color: inherit;
            text-decoration: none;
        }

        .pr-mega-column h3 a:hover {
            color: var(--packrapid-color-primary-dark);
        }

        .pr-mega-list {
            list-style: none;
        }

        .pr-mega-list li {
            margin-bottom: 12px;
        }

        .pr-mega-list a {
            color: var(--packrapid-color-text-dark);
            text-decoration: none;
            font-size: 15px;
            transition: var(--packrapid-transition);
            display: block;
            padding: 5px 0;
            border-radius: var(--packrapid-border-radius-md);
        }

        .pr-mega-list a:hover {
            color: var(--packrapid-color-primary);
            padding-left: 10px;
        }

        /* Special Promo Column */
        .pr-mega-promo {
            background: linear-gradient(135deg, var(--packrapid-color-background-main) 0%, var(--packrapid-color-border) 100%);
            padding: 25px;
            border-radius: var(--packrapid-border-radius-md);
            border: 1px solid var(--packrapid-color-border);
        }

        .pr-mega-promo h4 {
            font-family: var(--packrapid-font-family-heading);
            color: var(--packrapid-color-primary);
            margin-bottom: 15px;
            font-size: 16px;
        }

        .pr-mega-promo p {
            font-size: 14px;
            color: var(--packrapid-color-text-muted);
            margin-bottom: 20px;
            line-height: 1.5;
        }
        /* Specific rule for .small and .text-muted within promo p tag */
        .pr-mega-promo p.small {
            font-size: 0.85em; /* Make it smaller than default 14px */
        }
        .pr-mega-promo p.text-muted {
            color: var(--packrapid-color-text-muted);
        }

        .pr-mega-promo img {
            width: 100%;
            height: 120px;
            object-fit: cover;
            border-radius: var(--packrapid-border-radius-md);
            margin-bottom: 15px;
        }

        /* CTA Button */
        .pr-cta-btn {
            background-color: var(--packrapid-color-primary);
            color: var(--packrapid-color-text-light);
            padding: 12px 24px;
            border: none;
            border-radius: var(--packrapid-border-radius-md);
            font-weight: 600;
            font-family: var(--packrapid-font-family-heading);
            text-decoration: none;
            display: inline-block;
            transition: var(--packrapid-transition);
            font-size: 14px;
            white-space: nowrap;
        }

        .pr-cta-btn:hover {
            background-color: var(--packrapid-color-primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(0,0,0,0.1);
            color: var(--packrapid-color-text-light);
        }
        
        .pr-navbar .pr-cta-btn {
             margin-left: 20px;
        }

        .pr-btn-outline {
            background-color: transparent;
            color: var(--packrapid-color-primary);
            border: 2px solid var(--packrapid-color-primary);
        }

        .pr-btn-outline:hover {
            background-color: var(--packrapid-color-primary);
            color: var(--packrapid-color-text-light);
        }

        /* Mobile Menu Toggle */
        .pr-mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--packrapid-color-text-dark);
            cursor: pointer;
            z-index: var(--pr-mobile-submenu-z-index); /* Ensure toggle is above mobile menu */
        }
        /* Bootstrap `me-2` equivalent for icons in mobile menu */
        .pr-mega-promo h4 .fas.me-2 {
            margin-right: 0.5rem; /* ~8px */
        }


        /* Responsive Design */
        @media (max-width: 992px) {
            .pr-navbar .pr-cta-btn { 
                display: none;
            }

            .pr-nav { /* Base style for mobile, before .active is added */
                display: none; 
                flex-direction: column;
                gap: 0; 
                align-items: flex-start;
                /* Reset potential interfering properties from desktop or other states */
                position: static; 
                width: auto;
                height: auto;
                transform: none;
                opacity: 1;
                visibility: visible;
                background-color: transparent;
                overflow-y: visible; 
                padding: 0;
                box-shadow: none;
                z-index: auto;
            }

            .pr-nav.active {
                display: flex !important; 
                flex-direction: column !important; 
                position: fixed !important; 
                top: 0 !important;
                left: 0 !important; 
                width: 100% !important; 
                height: 100vh !important; /* Use vh for explicit viewport height */
                background-color: var(--packrapid-color-background-content) !important; 
                padding: 0; /* Reset padding first */
                padding-top: var(--pr-header-height) !important; 
                padding-left: 20px !important;
                padding-right: 20px !important;
                padding-bottom: 20px !important;
                box-sizing: border-box !important; 
                box-shadow: var(--packrapid-box-shadow) !important;
                overflow-y: auto !important; 
                z-index: var(--pr-navbar-collapse-z-index) !important;     
                
                opacity: 1 !important; 
                visibility: visible !important; 
                transform: none !important; 
            }
            
            .pr-nav-item {
                width: 100%; /* Make nav items full width in mobile column layout */
            }

            /* Ensure children of .pr-nav.active are also visible and correctly laid out */
            .pr-nav.active .pr-nav-item {
                opacity: 1 !important;
                visibility: visible !important;
                transform: none !important;
            }

            .pr-nav-link {
                padding: 15px 10px; 
                width: 100%; 
                justify-content: space-between; 
            }
            .pr-nav-link::after {
                display: none; /* No underline hover on mobile */
            }

            .pr-mobile-toggle {
                display: block;
            }

            /* Mobile Mega Menu Adjustments */
            .pr-mega-menu { /* Base style for mega menu itself on mobile */
                position: static !important; 
                width: 100% !important; 
                opacity: 1 !important; 
                visibility: visible !important;
                transform: none !important; 
                box-shadow: none !important;
                border-top: none !important;
                margin-top: 0 !important;
                padding: 0; /* Reset padding, specific padding handled by .pr-mega-content or direct children */
                padding-left: 20px !important; /* Indent sub-items as per original */
                background-color: var(--packrapid-color-background-main) !important; /* Lighter background for submenu */
                display: none; /* Hidden by default, shown by .mobile-active */
                box-sizing: border-box !important;
            }
            
            .pr-nav-item:hover .pr-mega-menu { /* Disable desktop hover behavior on mobile widths */
                /* No need for rules here if default is display:none for .pr-mega-menu */
            }

            .pr-nav-item.mobile-active .pr-mega-menu { /* Show on mobile click */
                display: block !important; /* CRITICAL: Make the submenu visible */
            }

            /* CRITICAL: Ensure content INSIDE the mobile mega menu is also visible and laid out */
            .pr-nav-item.mobile-active .pr-mega-menu > * { /* Target direct children first */
                opacity: 1 !important;
                visibility: visible !important;
                transform: none !important;
            }
            .pr-nav-item.mobile-active .pr-mega-menu .pr-mega-content,
            .pr-nav-item.mobile-active .pr-mega-menu .pr-mega-grid,
            .pr-nav-item.mobile-active .pr-mega-menu .pr-mega-column,
            .pr-nav-item.mobile-active .pr-mega-menu .pr-mega-column > *, /* Headers, lists etc. in column */
            .pr-nav-item.mobile-active .pr-mega-menu .pr-mega-list,
            .pr-nav-item.mobile-active .pr-mega-menu .pr-mega-list li,
            .pr-nav-item.mobile-active .pr-mega-menu .pr-mega-list a,
            .pr-nav-item.mobile-active .pr-mega-menu .pr-mega-promo,
            .pr-nav-item.mobile-active .pr-mega-menu .pr-mega-promo > * { /* Content of promo */
                opacity: 1 !important;
                visibility: visible !important;
                transform: none !important;
                /* Ensure display is appropriate if overridden elsewhere */
                 display: inherit;
            }
             /* Ensure links are clickable and text is visible */
            .pr-nav-item.mobile-active .pr-mega-menu .pr-mega-list a {
                display: block !important; /* Make sure they take up space */
                color: var(--packrapid-color-text-dark) !important; /* Ensure text color */
            }


            .pr-mega-content { /* Adjustments for mobile mega menu content area */
                padding: 10px 0 !important; 
            }

            .pr-mega-grid { /* Adjustments for mobile mega menu grid */
                display: grid !important; /* Ensure grid layout is applied */
                grid-template-columns: 1fr !important;
                gap: 10px !important;
            }
            .pr-mega-column h3 {
                font-size: 16px;
                margin-bottom: 10px;
                padding-bottom: 5px;
            }
            .pr-mega-list a {
                font-size: 14px;
                padding: 8px 0;
            }
            .pr-mega-promo {
                margin-top: 15px;
            }

            /* Mobile dropdown icon behavior */
            .pr-nav-item:hover .pr-dropdown-icon { /* Disable desktop hover rotation */
                transform: none; 
            }
            .pr-nav-item.mobile-active .pr-nav-link .pr-dropdown-icon {
                transform: rotate(180deg) !important; /* Ensure rotation when active */
            }
        }


                .footer .footer-credits {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: var(--packrapid-spacing-lg);
            margin-top: var(--packrapid-spacing-xl);
            font-size: 0.9rem;
        }
        .footer .footer-credits a {
             color: var(--packrapid-color-footer-text);
             text-decoration: none;
        }
        .footer .footer-credits a:hover {
            color: var(--packrapid-color-text-light);
            text-decoration: underline;
        }