/* Mobile First Responsive Design - Updated 2025-01-27 */

/* Mobile Styles (default) */
@media (max-width: 767px) {
    .hero {
        margin: 32px var(--spacing-lg);
        padding: 40px 28px;
        border-radius: var(--border-radius-lg);
    }

    .hero-content {
        gap: var(--spacing-xl);
    }

    .hero-title {
        font-size: 40px;
    }

    .hero-actions {
        gap: var(--spacing-md);
    }

    .hero.hero--content-only .hero-actions {
        margin-top: var(--spacing-md);
        gap: var(--spacing-sm);
        align-items: center;
    }

    .hero-cta {
        flex-direction: column;
        align-items: stretch;
    }

    .hero-button {
        width: 100%;
        justify-content: center;
    }

    .hero-highlights {
        flex-direction: column;
        width: 100%;
        gap: var(--spacing-md);
    }

    .hero-highlight {
        width: 100%;
    }

    .newsletter-panel--hero {
        width: 100%;
        padding: 18px 14px;
        background: linear-gradient(135deg, rgba(46, 68, 105, 0.92), rgba(84, 107, 146, 0.82));
        border: 1px solid rgba(255, 255, 255, 0.32);
        box-shadow: 0 24px 40px rgba(15, 26, 42, 0.32);
        backdrop-filter: blur(14px);
    }

    .newsletter-panel__headline {
        font-size: clamp(0.95rem, 2.8vw, 1.05rem);
        line-height: 1.3;
    }

    .newsletter-panel--hero .newsletter-panel__inputs {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
        border-radius: 20px;
        padding: 6px;
    }

    .newsletter-panel__input {
        min-width: 0;
        flex: 0 1 auto;
        width: 100%;
        padding: 10px 12px;
        border-radius: 14px;
        font-size: clamp(0.9rem, 2.4vw, 0.95rem);
    }

    .newsletter-panel__headline {
        font-size: clamp(1rem, 3vw, 1.1rem);
        line-height: 1.35;
    }

    .newsletter-panel__actions {
        width: 100%;
        gap: var(--spacing-xs);
        justify-content: flex-start;
    }

    .newsletter-panel--hero .newsletter-panel__icons,
    .newsletter-panel__icons {
        justify-content: flex-start;
        flex-wrap: wrap;
        gap: var(--spacing-xs);
    }

    .newsletter-panel__submit {
        height: 2.5rem;
        border-radius: 14px;
        display: flex;
        justify-content: center;
        align-self: flex-start;
        font-size: clamp(0.95rem, 2.4vw, 1rem);
    }

    .newsletter-panel--hero .newsletter-panel__icon {
        width: 48px;
        height: 48px;
        font-size: 20px;
    }

    .hero.hero--content-only .newsletter-panel__inputs {
        padding: 6px 8px;
        gap: var(--spacing-xs);
        border-radius: 16px;
    }

    .hero.hero--content-only .newsletter-panel__input {
        padding: 9px 12px;
        border-radius: 12px;
        font-size: clamp(0.9rem, 2.4vw, 0.95rem);
    }

    .hero.hero--content-only .newsletter-panel__submit {
        height: 2.35rem;
        border-radius: 12px;
        font-size: clamp(0.92rem, 2.3vw, 0.98rem);
    }

    .nav-container {
        flex-wrap: wrap;
        align-items: center;
        gap: var(--spacing-sm);
        padding: calc(var(--spacing-md) + var(--spacing-xs)) var(--spacing-xl);
    }

    .nav-toggle {
        display: inline-flex;
        margin-left: auto;
    }

    .nav-menu {
        width: 100%;
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: var(--spacing-xs);
        margin-top: var(--spacing-md);
        padding: calc(var(--spacing-md) + 2px) calc(var(--spacing-md) + var(--spacing-xs));
        border-radius: 18px;
        background: rgba(255, 255, 255, 0.94);
        border: 1px solid rgba(34, 52, 84, 0.12);
        box-shadow: 0 20px 36px rgba(15, 26, 42, 0.16);
        backdrop-filter: blur(18px);
    }

    @supports not ((-webkit-backdrop-filter: blur(0)) or (backdrop-filter: blur(0))) {
        .nav-menu {
            background-color: var(--white);
        }
    }

    .nav-menu.nav-menu--open {
        display: flex;
    }

    .nav-menu li {
        width: 100%;
    }

    .nav-menu li + li {
        border-top: 1px solid rgba(34, 52, 84, 0.08);
        padding-top: var(--spacing-xs);
    }

    .nav-menu a {
        display: flex;
        align-items: center;
        gap: var(--spacing-xs);
        justify-content: flex-start;
        width: 100%;
        padding: calc(var(--spacing-sm) + var(--spacing-xs)) var(--spacing-md);
        border-radius: 12px;
        font-size: var(--font-size-sm);
        color: var(--primary-color);
        background: transparent;
        transition: background-color var(--transition-fast), color var(--transition-fast);
    }

    .nav-menu a:hover,
    .nav-menu a:focus-visible {
        background-color: rgba(34, 52, 84, 0.1);
        color: var(--black);
        outline: none;
    }

    .nav-menu a.active {
        border: none;
        background-color: rgba(34, 52, 84, 0.16);
        color: var(--black);
    }

    .main-container {
        grid-template-columns: 1fr;
        padding: var(--spacing-lg);
        gap: var(--spacing-lg);
    }
    
    .nav-container {
        padding: calc(var(--spacing-md) + var(--spacing-xs)) var(--spacing-xl);
        flex-wrap: wrap;
        height: auto;
        min-height: 52px;
    }
    
    .search-bar {
        display: none;
    }
    
    .nav-menu {
        gap: var(--spacing-xs);
    }
    
    .nav-menu a {
        padding: calc(var(--spacing-sm) + var(--spacing-xs)) var(--spacing-md);
        font-size: var(--font-size-sm);
    }
    
    .logo {
        font-size: var(--font-size-lg);
    }
    
    .logo-icon {
        width: 28px;
        height: 28px;
        font-size: var(--font-size-sm);
    }
    
    .profile-card {
        padding: var(--spacing-lg) var(--spacing-md) var(--spacing-md);
    }
    
    .profile-avatar {
        width: 60px;
        height: 60px;
        margin: -30px auto var(--spacing-sm);
        font-size: var(--font-size-lg);
    }
    
    .post-actions {
        padding-left: 0;
        flex-wrap: wrap;
        gap: var(--spacing-sm);
    }
    
    .post-action {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: var(--font-size-xs);
    }
    
    .article-actions {
        flex-wrap: wrap;
        gap: var(--spacing-sm);
    }
    
    .action-button {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: var(--font-size-xs);
    }
    
    .news-title,
    .puzzle-name {
        font-size: var(--font-size-sm);
    }
    
    .news-headline {
        font-size: var(--font-size-xs);
    }
    
    /* Articles page mobile styles */
    .articles-header h1 {
        font-size: var(--font-size-xl);
    }
    
    .articles-subtitle {
        font-size: var(--font-size-md);
    }
    
    .articles-filters {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .filter-group {
        justify-content: center;
    }
    
    .articles-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .article-card-grid {
        margin: 0 var(--spacing-sm);
    }
    
    .article-image-container {
        height: 150px;
        font-size: 36px;
    }
    
    .article-title-grid {
        font-size: var(--font-size-md);
    }
    
    .pagination-container {
        flex-wrap: wrap;
        gap: var(--spacing-xs);
    }
    
    .pagination-btn {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: var(--font-size-xs);
    }
    
    /* Article page mobile styles */
    .article-main-container {
        padding: var(--spacing-md);
        max-width: 100%;
        box-sizing: border-box;
    }
    
    .article-layout {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .article-header-full {
        padding: var(--spacing-lg) var(--spacing-md);
        max-width: 100%;
        box-sizing: border-box;
    }
    
    .article-title-full {
        font-size: var(--font-size-xl);
        line-height: 1.2;
    }
    
    .article-meta-full {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-lg);
    }
    
    .article-stats-full {
        flex-direction: column;
        gap: var(--spacing-md);
        width: 100%;
    }
    
    .article-stats-full .stat-item {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: var(--spacing-sm) 0;
        border-bottom: 1px solid var(--background-color);
    }
    
    .article-stats-full .stat-item:last-child {
        border-bottom: none;
    }
    
    .article-featured-image {
        height: 200px;
        font-size: 48px;
    }
    
    .article-body {
        padding: var(--spacing-md);
        margin: 0;
        width: 100%;
        max-width: 100%;
    }
    
    .article-lead {
        font-size: var(--font-size-lg);
        margin-bottom: var(--spacing-xl);
    }
    
    .article-body h2 {
        font-size: var(--font-size-xl);
        margin: var(--spacing-xl) 0 var(--spacing-md);
    }
    
    .article-body h3 {
        font-size: var(--font-size-lg);
        margin: var(--spacing-lg) 0 var(--spacing-sm);
    }
    
    .article-body h4 {
        font-size: var(--font-size-md);
        margin: var(--spacing-md) 0 var(--spacing-xs);
    }
    
    .article-body p {
        font-size: var(--font-size-md);
        margin-bottom: var(--spacing-lg);
        line-height: 1.7;
    }
    
    .article-body ul,
    .article-body ol {
        padding-left: var(--spacing-lg);
    }
    
    .article-body li {
        font-size: var(--font-size-md);
        margin-bottom: var(--spacing-sm);
    }
    
    .article-body table {
        width: 100%;
        font-size: var(--font-size-sm);
        overflow-x: auto;
        display: block;
        white-space: nowrap;
    }
    
    .article-body table th,
    .article-body table td {
        padding: var(--spacing-xs);
        text-align: left;
        border-bottom: 1px solid var(--border-gray);
    }
    
    .article-body table th {
        font-weight: 600;
        background-color: var(--background-color);
    }
    
    .article-tags-full {
        padding: var(--spacing-lg);
        gap: var(--spacing-xs);
    }
    
    .tag {
        font-size: var(--font-size-xs);
        padding: var(--spacing-xs) var(--spacing-sm);
    }
    
    /* Hide sidebar completely on mobile for cleaner reading experience */
    .article-sidebar {
        display: none;
    }
    
    /* Breadcrumb mobile styles */
    .breadcrumb {
        font-size: var(--font-size-xs);
        margin-bottom: var(--spacing-lg);
        overflow-x: auto;
        white-space: nowrap;
    }
    
    .breadcrumb-separator {
        margin: 0 var(--spacing-xs);
    }
    
    /* Fix scrolling issues on mobile */
    body {
        overflow-x: hidden;
    }
    
    .article-main-container {
        overflow-x: hidden;
    }
    
    .article-content {
        overflow-x: hidden;
        max-width: 100%;
        box-sizing: border-box;
    }
    
    .article-body {
        overflow-x: hidden;
        word-wrap: break-word;
        overflow-wrap: break-word;
        max-width: 100%;
        box-sizing: border-box;
    }
    
    /* Additional mobile improvements */
    .article-content-html img {
        max-width: 100%;
        height: auto;
        border-radius: var(--border-radius-sm);
        margin: var(--spacing-md) 0;
    }
    
    .article-content-html a {
        color: var(--primary-color);
        text-decoration: underline;
        word-break: break-word;
        overflow-wrap: break-word;
    }
    
    .article-content-html a:hover {
        color: var(--secondary-color);
    }
    
    /* Fix table scrolling */
    .article-body table {
        width: 100%;
        max-width: 100%;
        overflow-x: auto;
        display: block;
        white-space: nowrap;
        -webkit-overflow-scrolling: touch;
    }
    
    .article-body table tbody,
    .article-body table thead,
    .article-body table tr {
        display: table;
        width: 100%;
        table-layout: fixed;
    }
    
    /* Improve touch targets */
    .nav-menu a,
    .breadcrumb a,
    .tag,
    .pagination-btn {
        min-height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    /* Better spacing for mobile reading */
    .article-body p {
        margin-bottom: var(--spacing-lg);
        word-wrap: break-word;
        overflow-wrap: break-word;
    }
    
    .article-body p:last-child {
        margin-bottom: 0;
    }
    
    /* Fix long words and URLs */
    .article-body * {
        word-wrap: break-word;
        overflow-wrap: break-word;
        hyphens: auto;
    }
}

/* Tablet Styles */
@media (min-width: 768px) and (max-width: 1023px) {
    .hero {
        margin: 40px auto 24px;
        padding: 56px 44px;
    }

    .hero-actions {
        gap: var(--spacing-lg);
    }

    .hero.hero--content-only .hero-actions {
        margin-top: var(--spacing-lg);
        gap: var(--spacing-md);
        align-items: center;
    }

    .hero.hero--content-only .newsletter-panel__inputs {
        padding: 8px 10px;
        border-radius: 18px;
        gap: var(--spacing-sm);
    }

    .hero.hero--content-only .newsletter-panel__input {
        padding: 10px 14px;
        border-radius: 14px;
    }

    .hero.hero--content-only .newsletter-panel__submit {
        height: 2.6rem;
        border-radius: 14px;
    }

    .hero-highlights {
        justify-content: space-between;
        width: 100%;
    }

    .hero-highlight {
        flex: 1 1 30%;
        min-width: auto;
    }

    .newsletter-panel--hero {
        width: 100%;
    }

    .main-container {
        grid-template-columns: 1fr;
        padding: var(--spacing-xl);
        gap: var(--spacing-xl);
    }
    
    .nav-container {
        padding: 0 var(--spacing-xl);
    }
    
    .search-bar {
        min-width: 200px;
    }
    
    .nav-menu {
        gap: var(--spacing-sm);
    }
    
    .nav-menu a {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-sm);
    }
    
    .post-actions {
        padding-left: 60px;
    }
    
    .article-actions {
        flex-wrap: wrap;
        gap: var(--spacing-sm);
    }
    
    /* Article page tablet styles */
    .article-main-container {
        padding: var(--spacing-xl);
    }
    
    .article-layout {
        grid-template-columns: 1fr;
        gap: var(--spacing-xxl);
    }
    
    .article-header-full {
        padding: var(--spacing-xxl) var(--spacing-xl) var(--spacing-lg);
    }
    
    .article-title-full {
        font-size: var(--font-size-xxl);
    }
    
    .article-meta-full {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
    
    .article-stats-full {
        flex-direction: row;
        gap: var(--spacing-lg);
    }
    
    .article-featured-image {
        height: 250px;
        font-size: 60px;
    }
    
    .article-body {
        padding: var(--spacing-xxl) var(--spacing-xl);
    }
    
    .article-body h2 {
        font-size: var(--font-size-xl);
    }
    
    .article-body h3 {
        font-size: var(--font-size-lg);
    }
    
    .article-body p {
        font-size: var(--font-size-md);
    }
    
    .article-body table {
        font-size: var(--font-size-sm);
    }
    
    /* Article sidebar tablet styles */
    .article-sidebar {
        order: -1;
    }
    
    .author-card {
        padding: var(--spacing-xl);
    }
    
    .author-card-header {
        flex-direction: row;
        text-align: left;
    }
    
    .author-stats {
        justify-content: space-around;
    }
}

/* Desktop Styles */
@media (min-width: 1024px) {
    .main-container {
        grid-template-columns: 2fr 1fr;
        padding: var(--spacing-xxl);
        gap: var(--spacing-xxl);
    }
    
    .nav-container {
        padding: 0 var(--spacing-xxl);
    }
    
    .search-bar {
        min-width: 280px;
    }
    
    .nav-menu {
        gap: var(--spacing-sm);
    }
    
    .nav-menu a {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-sm);
    }
    
    .post-actions {
        padding-left: 60px;
    }
    
    .article-actions {
        justify-content: space-between;
    }
}

/* Large Desktop Styles */
@media (min-width: 1440px) {
    .main-container {
        max-width: 1200px;
    }
    
    .nav-container {
        max-width: 1200px;
    }
    
    .footer-content {
        max-width: 1200px;
    }
}

@media (max-width: 640px) {
    .newsletter-panel__submit {
        width: 100%;
        max-width: none;
        height: 3rem;
        border-radius: var(--border-radius-md);
        display: flex;
        justify-content: center;
    }
}

/* Print Styles */
@media print {
    .header,
    .footer,
    .right-sidebar,
    .post-actions,
    .article-actions {
        display: none;
    }
    
    .main-container {
        grid-template-columns: 1fr;
        padding: 0;
        gap: 0;
    }
    
    .card {
        border: 1px solid #000;
        box-shadow: none;
    }
    
    .article-content {
        padding: 0;
    }
    
    .article-title {
        font-size: 18pt;
        margin-bottom: 12pt;
    }
    
    .article-excerpt {
        font-size: 12pt;
        line-height: 1.4;
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    :root {
        --primary-color: #000000;
        --secondary-color: #000000;
        --background-color: #ffffff;
        --text-gray: #000000;
        --border-gray: #000000;
    }
    
    .card {
        border: 2px solid var(--border-gray);
    }
    
    .nav-menu a:hover,
    .post-action:hover,
    .action-button:hover {
        background-color: var(--text-gray);
        color: var(--white);
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    :root {
        --background-color: #1a1a1a;
        --white: #2d2d2d;
        --black: #ffffff;
        --text-gray: #cccccc;
        --border-gray: #404040;
    }
    
    .card {
        background-color: var(--white);
        border-color: var(--border-gray);
    }
    
    .search-bar {
        background-color: var(--white);
        border-color: var(--border-gray);
    }
    
    .post-textarea {
        background-color: var(--white);
        border-color: var(--border-gray);
        color: var(--black);
    }
}