/* 
Content Blocks CSS
Responsive styling for flexible content blocks system
*/

/* CSS Custom Properties for consistent theming */
:root {
    --content-block-max-width: 1000px;
    --content-block-text-max-width: 900px;
    --content-block-spacing: 2rem;
    --content-block-spacing-mobile: 1.5rem;
    --content-block-spacing-small: 1rem;
    --content-block-padding: 1.25rem;
    --content-block-padding-mobile: 1rem;
    --content-block-padding-small: 0.75rem;
    --content-block-border-radius: 8px;
    --content-block-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --content-block-shadow-hover: 0 4px 12px rgba(0, 123, 189, 0.3);
    --content-block-transition: all 0.3s ease;
    --brief-button-bg: linear-gradient(239deg, #007bbd, #003f61);
    --brief-button-bg-hover: linear-gradient(239deg, #0056a3, #002a42);
    --brief-button-color: #ffffff;
    --brief-button-border-radius: calc(50/16*1rem);
    --text-color-primary: #111827;
    --text-color-secondary: #6b7280;
    --text-color-muted: #9ca3af;
}

/* Content blocks container with CSS Grid support */
.content-blocks-container {
    margin: var(--content-block-spacing) 0;
    display: grid;
    gap: var(--content-block-spacing);
    grid-template-columns: 1fr;
}

.content-blocks-container:first-child {
    margin-top: 0;
}

.content-blocks-container:last-child {
    margin-bottom: 0;
}

/* Base content block styles with improved grid layout */
.content-block {
    position: relative;
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    margin: 0; /* Remove margin as container handles spacing */
}

.content-block__wrapper {
    max-width: var(--content-block-max-width);
    margin: 0 auto;
    padding: 0 var(--content-block-padding);
    width: 100%;
    box-sizing: border-box;
}

/* Text block specific styles with improved typography */
.content-block--text {
    display: grid;
    place-items: center;
}

.content-block--text .content-block__content {
    max-width: var(--content-block-text-max-width);
    margin: 0 auto;
    line-height: 1.7;
    font-size: 1.06rem;
    color: var(--text-color-primary);
}

/* Text alignment variations */
.content-block__wrapper--left .content-block__content {
    text-align: left;
}

.content-block__wrapper--center .content-block__content {
    text-align: center;
}

.content-block__wrapper--right .content-block__content {
    text-align: right;
}

/* Enhanced typography for text blocks */
.content-block--text .content-block__content h1,
.content-block--text .content-block__content h2,
.content-block--text .content-block__content h3,
.content-block--text .content-block__content h4,
.content-block--text .content-block__content h5,
.content-block--text .content-block__content h6 {
    margin-top: 1.75rem;
    margin-bottom: 0.75rem;
    line-height: 1.3;
    color: var(--text-color-primary);
}

.content-block--text .content-block__content h1:first-child,
.content-block--text .content-block__content h2:first-child,
.content-block--text .content-block__content h3:first-child,
.content-block--text .content-block__content h4:first-child,
.content-block--text .content-block__content h5:first-child,
.content-block--text .content-block__content h6:first-child {
    margin-top: 0;
}

.content-block--text .content-block__content p {
    margin: 0.9rem 0;
}

.content-block--text .content-block__content p:first-child {
    margin-top: 0;
}

.content-block--text .content-block__content p:last-child {
    margin-bottom: 0;
}

.content-block--text .content-block__content ul,
.content-block--text .content-block__content ol {
    padding-left: 1.25rem;
    margin: 0.75rem 0 1rem;
}

.content-block--text .content-block__content li {
    margin: 0.35rem 0;
}

.content-block--text .content-block__content a {
    color: #0ea5e9;
    text-decoration: underline;
    transition: color 0.2s ease;
}

.content-block--text .content-block__content a:hover {
    color: #0284c7;
}

.content-block--text .content-block__content blockquote {
    margin: 1.25rem 0;
    padding: 0.75rem 1rem;
    border-left: 4px solid #0ea5e9;
    background: #f0f9ff;
    color: #0f172a;
    border-radius: 6px;
}

.content-block--text .content-block__content code {
    background: #f3f4f6;
    padding: 0.15rem 0.35rem;
    border-radius: 4px;
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-size: 0.95em;
}

.content-block--text .content-block__content pre {
    overflow: auto;
    background: #0f172a;
    color: #e5e7eb;
    padding: 1rem;
    border-radius: var(--content-block-border-radius);
    margin: 1rem 0;
}

/* Image block specific styles with responsive design */
.content-block--image {
    display: grid;
    place-items: center;
    text-align: center;
}

.content-block__figure {
    margin: 0;
    display: inline-block;
    max-width: 100%;
    position: relative;
}

.content-block__image {
    max-width: 100%;
    height: auto;
    border-radius: var(--content-block-border-radius);
    box-shadow: var(--content-block-shadow);
    transition: var(--content-block-transition);
    display: block;
}

.content-block__image:hover {
    box-shadow: var(--content-block-shadow-hover);
    transform: translateY(-2px);
}

/* Responsive image size variations */
.content-block__figure--small {
    max-width: min(300px, 100%);
}

.content-block__figure--medium {
    max-width: min(600px, 100%);
}

.content-block__figure--large {
    max-width: min(800px, 100%);
}

.content-block__figure--full {
    max-width: 100%;
}

/* Alternative image size classes for direct image styling */
.content-block__image--small {
    max-width: min(300px, 100%);
}

.content-block__image--medium {
    max-width: min(600px, 100%);
}

.content-block__image--large {
    max-width: min(800px, 100%);
}

.content-block__image--full {
    max-width: 100%;
}

.content-block__caption {
    margin-top: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-color-secondary);
    font-style: italic;
    text-align: center;
    line-height: 1.4;
}

/* Image alignment variations */
.content-block__wrapper--left .content-block__figure,
.content-block__wrapper--left .content-block__image {
    margin-left: 0;
    margin-right: auto;
}

.content-block__wrapper--center .content-block__figure,
.content-block__wrapper--center .content-block__image {
    margin-left: auto;
    margin-right: auto;
}

.content-block__wrapper--right .content-block__figure,
.content-block__wrapper--right .content-block__image {
    margin-left: auto;
    margin-right: 0;
}

/* Text + Image block layouts with advanced CSS Grid */
.content-block--text-image .content-block__wrapper {
    display: grid;
    gap: 2rem;
    align-items: start;
    grid-template-areas: "content image";
}

/* Horizontal layouts with responsive grid */
.content-block__wrapper--text_left {
    grid-template-columns: 1fr 1fr;
    grid-template-areas: "content image";
}

.content-block__wrapper--text_right {
    grid-template-columns: 1fr 1fr;
    grid-template-areas: "image content";
}

/* Vertical layouts */
.content-block__wrapper--text_top {
    grid-template-columns: 1fr;
    grid-template-areas: 
        "content"
        "image";
}

.content-block__wrapper--text_bottom {
    grid-template-columns: 1fr;
    grid-template-areas: 
        "image"
        "content";
}

/* Text and image sections with grid areas */
.content-block__text-section {
    grid-area: content;
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-height: 200px;
}

.content-block__image-section {
    grid-area: image;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 200px;
}

/* Enhanced text styling within text+image blocks */
.content-block--text-image .content-block__text-section .content-block__content {
    line-height: 1.7;
    font-size: 1.06rem;
    color: var(--text-color-primary);
}

.content-block--text-image .content-block__text-section h1,
.content-block--text-image .content-block__text-section h2,
.content-block--text-image .content-block__text-section h3,
.content-block--text-image .content-block__text-section h4,
.content-block--text-image .content-block__text-section h5,
.content-block--text-image .content-block__text-section h6 {
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
    line-height: 1.3;
}

.content-block--text-image .content-block__text-section h1:first-child,
.content-block--text-image .content-block__text-section h2:first-child,
.content-block--text-image .content-block__text-section h3:first-child,
.content-block--text-image .content-block__text-section h4:first-child,
.content-block--text-image .content-block__text-section h5:first-child,
.content-block--text-image .content-block__text-section h6:first-child {
    margin-top: 0;
}

/* Image sizing within text+image blocks */
.content-block--text-image .content-block__image-section .content-block__figure {
    width: 100%;
    max-width: 100%;
}

.content-block--text-image .content-block__image-section .content-block__image {
    width: 100%;
    max-width: 100%;
    object-fit: cover;
}

/* Brief button styling matching main page implementation */
.content-block__brief-button {
    margin-top: 2rem;
    text-align: center;
    display: flex;
    justify-content: center;
}

/* Brief button styled to match main page .more2 class */
.brief-button {
    margin-bottom: 1rem;
    margin-right: 1rem;
    transition: all .2s ease-out;
    overflow: hidden;
    position: relative;
    border: 1px solid #15011d;
    background: #fff;
    border-radius: var(--brief-button-border-radius);
    color: #15011d;
    font-size: calc(16/16*1rem);
    font-weight: 400;
    display: inline-flex;
    align-items: center;
    justify-content: flex-start;
    padding: 11px 24px;
    margin-left: auto;
    min-height: 3rem;
    text-decoration: none;
    cursor: pointer;
    font-family: inherit;
}

.brief-button::before {
    content: "";
    display: block;
    background: #00e6e3;
    border-radius: 48px;
    height: calc(100% + 2px);
    width: calc(100% + 2px);
    position: absolute;
    left: -1px;
    top: -1px;
    transform: translate(-100%, 0) rotate(10deg);
    transform-origin: top left;
    transition: transform .2s ease-out;
    z-index: -1;
}

.brief-button:hover,
.brief-button:focus,
.brief-button:focus-within,
.brief-button.default-active {
    color: #15011d;
    border-color: #00e6e3;
    background: #00e6e3;
    box-shadow: 0 6px 30px 0 rgba(0, 0, 0, .2);
    transform: scale(1.1);
    z-index: 1;
    text-decoration: none;
}

.brief-button:hover::before,
.brief-button:focus::before,
.brief-button:focus-within::before,
.brief-button.default-active::before {
    transform: translate(0);
}

.brief-button > img,
.brief-button > svg {
    display: inline-block;
    width: 23px;
    height: 14px;
    margin-left: 16px;
    transition: all .2s ease-out;
    flex-shrink: 0;
}

.brief-button:hover > img,
.brief-button:hover > svg {
    transform: translateX(4px);
}

/* Alternative brief button styling for different contexts */
.brief-button--alternative {
    background: var(--brief-button-bg);
    color: var(--brief-button-color);
    border: 1px solid transparent;
    border-radius: var(--content-block-border-radius);
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    font-size: 1rem;
    min-height: auto;
}

.brief-button--alternative::before {
    display: none;
}

.brief-button--alternative:hover,
.brief-button--alternative:focus {
    background: var(--brief-button-bg-hover);
    transform: translateY(-2px);
    box-shadow: var(--content-block-shadow-hover);
}

.brief-button--alternative > img,
.brief-button--alternative > svg {
    width: 16px;
    height: 16px;
    margin-left: 0.5rem;
}

/* Responsive design with comprehensive breakpoints */

/* Large desktop screens (1200px and up) */
@media (min-width: 1200px) {
    :root {
        --content-block-max-width: 1200px;
        --content-block-text-max-width: 1000px;
        --content-block-spacing: 3rem;
    }
    
    .content-block--text-image .content-block__wrapper {
        gap: 3rem;
    }
    
    .content-block__text-section,
    .content-block__image-section {
        min-height: 250px;
    }
}

/* Desktop screens (992px to 1199px) */
@media (min-width: 992px) and (max-width: 1199px) {
    :root {
        --content-block-max-width: 960px;
        --content-block-text-max-width: 800px;
    }
}

/* Tablet landscape (768px to 991px) */
@media (min-width: 768px) and (max-width: 991px) {
    :root {
        --content-block-max-width: 720px;
        --content-block-text-max-width: 600px;
        --content-block-spacing: 1.75rem;
        --content-block-padding: 1rem;
    }
    
    .content-blocks-container {
        gap: var(--content-block-spacing);
    }
    
    .content-block--text-image .content-block__wrapper {
        gap: 1.75rem;
    }
    
    .content-block__text-section,
    .content-block__image-section {
        min-height: 180px;
    }
}

/* Tablet portrait and mobile landscape (576px to 767px) */
@media (max-width: 767px) {
    :root {
        --content-block-spacing: var(--content-block-spacing-mobile);
        --content-block-padding: var(--content-block-padding-mobile);
    }
    
    .content-blocks-container {
        gap: var(--content-block-spacing-mobile);
    }
    
    .content-block__wrapper {
        padding: 0 var(--content-block-padding-mobile);
    }
    
    /* Stack horizontal layouts on tablet/mobile */
    .content-block__wrapper--text_left,
    .content-block__wrapper--text_right {
        grid-template-columns: 1fr;
        grid-template-areas: 
            "content"
            "image";
        gap: 1.5rem;
    }
    
    /* Adjust image sizes on tablet/mobile */
    .content-block__figure--large,
    .content-block__image--large {
        max-width: 100%;
    }
    
    .content-block__figure--medium,
    .content-block__image--medium {
        max-width: 100%;
    }
    
    .content-block__text-section,
    .content-block__image-section {
        min-height: 150px;
    }
    
    /* Brief button responsive adjustments */
    .brief-button {
        padding: 9px 20px;
        font-size: calc(15/16*1rem);
        min-height: 2.75rem;
    }
    
    .brief-button > img,
    .brief-button > svg {
        width: 20px;
        height: 12px;
        margin-left: 14px;
    }
    
    .brief-button--alternative {
        padding: 0.6rem 1.2rem;
        font-size: 0.9rem;
    }
}

/* Mobile portrait (up to 575px) */
@media (max-width: 575px) {
    :root {
        --content-block-spacing: var(--content-block-spacing-small);
        --content-block-padding: var(--content-block-padding-small);
    }
    
    .content-blocks-container {
        gap: var(--content-block-spacing-small);
    }
    
    .content-block__wrapper {
        padding: 0 var(--content-block-padding-small);
    }
    
    .content-block--text-image .content-block__wrapper {
        gap: 1rem;
    }
    
    .content-block__text-section,
    .content-block__image-section {
        min-height: 120px;
    }
    
    /* Typography adjustments for small screens */
    .content-block--text .content-block__content,
    .content-block--text-image .content-block__text-section .content-block__content {
        font-size: 1rem;
        line-height: 1.6;
    }
    
    .content-block__caption {
        font-size: 0.8rem;
    }
    
    /* Brief button mobile adjustments */
    .brief-button {
        padding: 8px 18px;
        font-size: calc(14/16*1rem);
        min-height: 2.5rem;
        margin-bottom: 0.75rem;
        margin-right: 0.75rem;
    }
    
    .brief-button > img,
    .brief-button > svg {
        width: 18px;
        height: 11px;
        margin-left: 12px;
    }
    
    .brief-button--alternative {
        padding: 0.5rem 1rem;
        font-size: 0.85rem;
    }
    
    .brief-button--alternative > img,
    .brief-button--alternative > svg {
        width: 14px;
        height: 14px;
    }
}

/* Extra small mobile screens (up to 375px) */
@media (max-width: 375px) {
    .content-block__wrapper {
        padding: 0 0.5rem;
    }
    
    .content-block--text-image .content-block__wrapper {
        gap: 0.75rem;
    }
    
    .brief-button {
        padding: 7px 16px;
        font-size: calc(13/16*1rem);
        min-height: 2.25rem;
    }
    
    .brief-button > img,
    .brief-button > svg {
        width: 16px;
        height: 10px;
        margin-left: 10px;
    }
}

/* Integration with existing longread styles */
.content-block .longread {
    margin: 0;
}

.content-block .longread h2,
.content-block .longread h3,
.content-block .longread h4 {
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
}

.content-block .longread p:first-child {
    margin-top: 0;
}

.content-block .longread p:last-child {
    margin-bottom: 0;
}

/* Traditional content fallback styling */
.traditional-content {
    max-width: 900px;
    margin: 0 auto;
    line-height: 1.8;
    font-size: 1.06rem;
    color: #111827;
}

.traditional-content h2,
.traditional-content h3,
.traditional-content h4 {
    margin-top: 1.75rem;
    margin-bottom: 0.75rem;
    line-height: 1.3;
}

.traditional-content p {
    margin: 0.9rem 0;
}

.traditional-content ul,
.traditional-content ol {
    padding-left: 1.25rem;
    margin: 0.75rem 0 1rem;
}

.traditional-content li {
    margin: 0.35rem 0;
}

.traditional-content a {
    color: #0ea5e9;
    text-decoration: underline;
}

.traditional-content blockquote {
    margin: 1.25rem 0;
    padding: 0.75rem 1rem;
    border-left: 4px solid #0ea5e9;
    background: #f0f9ff;
    color: #0f172a;
    border-radius: 6px;
}

.traditional-content img,
.traditional-content video {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 1rem auto;
    border-radius: 8px;
}

.traditional-content code {
    background: #f3f4f6;
    padding: 0.15rem 0.35rem;
    border-radius: 4px;
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-size: 0.95em;
}

.traditional-content pre {
    overflow: auto;
    background: #0f172a;
    color: #e5e7eb;
    padding: 1rem;
    border-radius: 8px;
}

/* Accessibility improvements */
.brief-button:focus {
    outline: 2px solid #007bbd;
    outline-offset: 2px;
}

.content-block__image:focus {
    outline: 2px solid #007bbd;
    outline-offset: 2px;
}

/* Cross-browser compatibility and enhanced features */

/* CSS Grid fallback for older browsers */
@supports not (display: grid) {
    .content-blocks-container {
        display: block;
    }
    
    .content-block--text-image .content-block__wrapper {
        display: flex;
        flex-direction: column;
    }
    
    .content-block__wrapper--text_left,
    .content-block__wrapper--text_right {
        flex-direction: row;
    }
    
    .content-block__wrapper--text_right {
        flex-direction: row-reverse;
    }
    
    .content-block__text-section,
    .content-block__image-section {
        flex: 1;
    }
}

/* Enhanced focus states for accessibility */
.content-block__image:focus-visible {
    outline: 3px solid #007bbd;
    outline-offset: 3px;
}

.brief-button:focus-visible {
    outline: 3px solid #007bbd;
    outline-offset: 3px;
}

/* Reduced motion preferences */
@media (prefers-reduced-motion: reduce) {
    .content-block__image,
    .brief-button,
    .brief-button::before,
    .brief-button > img,
    .brief-button > svg {
        transition: none;
    }
    
    .brief-button:hover,
    .brief-button:focus {
        transform: none;
    }
    
    .content-block__image:hover {
        transform: none;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .content-block__image {
        border: 2px solid;
    }
    
    .brief-button {
        border-width: 2px;
    }
    
    .content-block__caption {
        color: inherit;
        font-weight: 600;
    }
}

/* Dark mode support (if implemented) */
@media (prefers-color-scheme: dark) {
    :root {
        --text-color-primary: #f9fafb;
        --text-color-secondary: #d1d5db;
        --text-color-muted: #9ca3af;
    }
    
    .content-block--text .content-block__content blockquote {
        background: #1f2937;
        color: #f9fafb;
        border-left-color: #3b82f6;
    }
    
    .content-block--text .content-block__content code {
        background: #374151;
        color: #f9fafb;
    }
}

/* Loading states and skeleton screens */
.content-block--loading {
    opacity: 0.6;
    pointer-events: none;
}

.content-block--loading .content-block__image {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

/* Print styles */
@media print {
    .content-block__brief-button {
        display: none !important;
    }
    
    .content-block__image {
        box-shadow: none !important;
        max-width: 100% !important;
        break-inside: avoid;
    }
    
    .content-block__wrapper--text_left,
    .content-block__wrapper--text_right {
        grid-template-columns: 1fr !important;
        grid-template-areas: 
            "content"
            "image" !important;
    }
    
    .content-block {
        break-inside: avoid;
        page-break-inside: avoid;
    }
    
    .content-block--text .content-block__content,
    .content-block--text-image .content-block__text-section .content-block__content {
        font-size: 12pt;
        line-height: 1.4;
        color: #000;
    }
    
    .content-block--text .content-block__content a,
    .content-block--text-image .content-block__text-section a {
        color: #000;
        text-decoration: underline;
    }
}