/* ========================================
   Bengali News Portal - Responsive Stylesheet
   Production-Grade Responsive Design
   ======================================== */

/* ========================================
   Breakpoints Reference
   ========================================
   - xs: < 480px (Smartphones)
   - sm: 480px - 575px (Large smartphones)
   - md: 576px - 767px (Tablets portrait)
   - lg: 768px - 991px (Tablets landscape)
   - xl: 992px - 1199px (Laptops)
   - xxl: 1200px+ (Desktops)
   ======================================== */

/* ========================================
   Extra Large Devices (Desktops)
   ======================================== */
@media (max-width: 1399px) {
    :root {
        --container-max: 1140px;
    }
}

/* ========================================
   Large Devices (Laptops & Tablets Landscape)
   ======================================== */
@media (max-width: 1199px) {
    :root {
        --container-max: 960px;
    }
    
    /* Hero Section */
    .hero-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    /* Category Grid */
    .category-grid {
        grid-template-columns: 1fr;
    }
    
    /* Text News Grid */
    .text-news-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    /* Gallery Grid */
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .gallery-item-large {
        grid-row: span 1;
    }
    
    /* Mega Menu */
    .mega-menu {
        width: 700px;
    }
    
    .mega-menu-grid {
        grid-template-columns: 1fr 1fr 1fr;
    }
    
    /* Sitemap */
    .sitemap-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    /* Content Grid */
    .content-grid {
        grid-template-columns: 1fr 300px;
    }
    
    .sidebar-container {
        --sidebar-width: 300px;
    }
}

/* ========================================
   Medium Devices (Tablets Portrait)
   ======================================== */
@media (max-width: 991px) {
    :root {
        --container-max: 720px;
        --container-padding: 12px;
    }
    
    /* Topbar */
    .topbar-left {
        display: none;
    }
    
    .topbar-inner {
        justify-content: flex-end;
        flex-wrap: nowrap;
        row-gap: 0;
    }

    .topbar-links {
        width: auto;
        flex-wrap: nowrap;
        padding-right: 8px;
        margin-right: 0;
    }

    .topbar-right {
        margin-left: 0;
        gap: 10px;
    }

    .admin-login-link {
        display: none;
    }
    
    /* Header */
    .header-main-row {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .header-top-meta {
        justify-content: center;
    }

    .header-ad-slot {
        justify-content: center;
    }

    .header-ad-stack {
        width: min(100%, 720px);
    }

    .ramadan-live-banner {
        grid-template-columns: auto minmax(0, 1fr) auto;
        align-items: center;
        gap: 6px;
        padding: 8px 10px;
    }

    .ramadan-live-kicker {
        grid-column: 1 / 3;
    }

    .ramadan-live-icon {
        grid-column: 1;
        grid-row: 2;
    }

    .ramadan-live-title {
        grid-column: 2;
        grid-row: 2;
        font-size: 15px;
    }

    .ramadan-live-meta {
        grid-column: 3;
        grid-row: 2;
        justify-content: flex-end;
    }

    .ramadan-live-title {
        font-size: 15px;
    }

    .ramadan-live-times {
        grid-column: 1 / -1;
        grid-row: 3;
        width: 100%;
        gap: 6px;
    }

    .ramadan-time-item {
        width: auto;
        justify-content: flex-start;
    }

    .ramadan-time-next {
        width: auto;
        text-align: left;
    }

    .header-logo-section {
        text-align: center;
    }

    .logo-bengali {
        font-size: 36px;
    }
    
    .logo-news {
        font-size: 28px;
    }
    
    .logo-portal {
        font-size: 18px;
    }
    
    /* Navigation */
    .main-nav {
        position: relative;
    }
    
    .nav-list {
        position: fixed;
        top: 0;
        left: -280px;
        width: 280px;
        height: 100vh;
        background: var(--color-white);
        flex-direction: column;
        padding: var(--space-4);
        box-shadow: var(--shadow-xl);
        overflow-y: auto;
        z-index: var(--z-modal);
        transition: left var(--transition-base);
    }
    
    .nav-list.active {
        left: 0;
    }
    
    .nav-item {
        border-bottom: 1px solid var(--color-border-light);
    }
    
    .nav-link {
        padding: var(--space-3) 0;
    }
    
    .mega-menu,
    .more-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        width: 100%;
        box-shadow: none;
        display: none;
    }
    
    .nav-item:hover .mega-menu,
    .nav-item:hover .more-menu {
        display: block;
    }
    
    .mega-menu-inner {
        padding: var(--space-3) 0;
    }
    
    .mega-menu-grid {
        grid-template-columns: 1fr;
    }
    
    .mega-featured,
    .mega-quick-links {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .search-toggle-desktop {
        display: none;
    }
    
    /* Breaking News */
    .breaking-label {
        font-size: var(--text-xs);
        padding: 2px var(--space-2);
    }
    
    .ticker-item {
        font-size: var(--text-xs);
    }
    
    /* Hero Section */
    .hero-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-sidebar {
        flex-direction: row;
        overflow-x: auto;
        gap: var(--space-3);
        padding-bottom: var(--space-2);
    }
    
    .hero-sidebar .news-card-small {
        flex: 0 0 280px;
    }
    
    /* Category Block */
    .category-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .category-sublinks {
        overflow-x: auto;
        width: 100%;
        padding-bottom: var(--space-2);
    }
    
    /* Text News */
    .text-news-grid {
        grid-template-columns: 1fr;
    }
    
    /* Gallery */
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    /* Content Grid */
    .content-grid {
        grid-template-columns: 1fr;
    }
    
    .sidebar-container {
        display: none;
    }
    
    /* Sidebar (show on mobile as bottom) */
    .sidebar-mobile {
        display: block;
        margin-top: var(--space-8);
    }
    
    /* Footer */
    .sitemap-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .column-social {
        grid-column: span 2;
        max-width: none;
    }
    
    /* Single Post */
    .post-title {
        font-size: var(--text-3xl);
    }
    
    .post-meta {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .post-actions {
        margin-left: 0;
        width: 100%;
        justify-content: center;
    }
    
    .post-featured-image {
        margin-left: calc(-1 * var(--container-padding));
        margin-right: calc(-1 * var(--container-padding));
    }
    
    .result-image {
        width: 150px;
        height: 100px;
    }
    
    /* Search Filters */
    .search-filters {
        flex-direction: column;
    }
    
    /* Related Grid */
    .related-grid {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   Small Devices (Large Smartphones)
   ======================================== */
@media (max-width: 767px) {
    :root {
        --container-max: 100%;
        --text-base: 15px;
    }
    
    /* Typography */
    h1 { font-size: var(--text-3xl); }
    h2 { font-size: var(--text-xl); }
    h3 { font-size: var(--text-lg); }
    h4 { font-size: var(--text-base); }
    
    /* Logo */
    .logo {
        flex-direction: column;
        align-items: center;
        line-height: 1.2;
    }
    
    .logo-bengali {
        font-size: 32px;
    }
    
    .logo-news {
        font-size: 24px;
    }
    
    .logo-portal {
        font-size: 14px;
    }
    
    .logo-tagline {
        display: none;
    }

    .ramadan-live-title {
        font-size: 14px;
    }

    .ramadan-live-kicker {
        font-size: 10px;
    }

    .ramadan-live-banner {
        grid-template-columns: 1fr;
    }

    .ramadan-live-kicker,
    .ramadan-live-icon,
    .ramadan-live-title,
    .ramadan-live-meta,
    .ramadan-live-times {
        grid-column: 1;
        grid-row: auto;
    }

    .ramadan-live-meta {
        justify-content: flex-start;
    }

    .ramadan-time-item,
    .ramadan-time-next {
        width: 100%;
    }

    .ramadan-time-item small,
    .ramadan-time-item strong,
    .ramadan-time-next {
        font-size: 10px;
    }
    
    /* Header Ads */
    .header-ad-top,
    .header-ad-bottom {
        min-height: 50px;
    }
    
    /* Breaking News Ticker */
    .breaking-news-ticker {
        padding: 6px 0;
    }
    
    .ticker-inner {
        flex-direction: row;
        min-height: auto;
    }
    
    .breaking-label {
        font-size: 10px;
        padding: 6px 10px;
    }
    
    .breaking-label::after {
        display: none;
    }
    
    .ticker-wrapper {
        padding-left: 8px;
    }
    
    .ticker-item {
        font-size: 12px;
        padding: 6px 12px;
    }
    
    /* Navigation */
    .mobile-menu-toggle .toggle-text {
        display: none;
    }
    
    .hamburger {
        flex-direction: row;
    }
    
    .hamburger span {
        width: 24px;
    }
    
    /* Hero Section */
    .hero-sidebar {
        flex-direction: column;
    }
    
    .hero-sidebar .news-card-small {
        flex: none;
        width: 100%;
    }
    
    /* Category Title */
    .category-title {
        font-size: var(--text-xl);
    }
    
    /* Section Titles */
    .section-title {
        font-size: var(--text-xl);
    }
    
    /* Text News */
    .text-news-grid {
        grid-template-columns: 1fr;
    }
    
    /* Gallery */
    .gallery-grid {
        grid-template-columns: 1fr;
    }
    
    /* Footer */
    .footer-sitemap {
        padding: var(--space-6) 0;
    }
    
    .sitemap-grid {
        grid-template-columns: 1fr;
    }
    
    .column-social {
        grid-column: span 1;
        padding: 14px 12px 12px;
    }

    .column-social .column-title {
        margin-bottom: 10px;
    }

    .column-social .social-links {
        gap: 10px;
        padding: 8px;
        padding-bottom: 12px;
        border: 1px solid #ececec;
        border-radius: 8px;
    }

    .column-social .app-title {
        margin-top: 12px;
        margin-bottom: 8px;
        padding-top: 2px;
    }

    .column-social .app-download-buttons {
        gap: 8px;
        padding: 0;
    }

    .column-social .app-store-button,
    .column-social .play-store-button {
        padding: 10px 12px;
    }

    .footer-about-brand {
        justify-content: center;
    }
    
    .footer-bottom-inner {
        display: flex;
        flex-direction: column;
        text-align: center;
    }

    .footer-logo {
        justify-content: center;
        min-width: 0;
    }

    .footer-copyright {
        text-align: center;
    }

    .footer-payments {
        min-width: 0;
        justify-content: center;
        gap: 8px;
        width: 100%;
    }

    .payment-icons {
        justify-content: center;
    }

    .payment-method {
        min-height: 28px;
        padding: 3px 6px;
    }

    .payment-method-name {
        font-size: 11px;
    }
    
    /* Single Post */
    .post-title {
        font-size: var(--text-2xl);
    }
    
    .post-excerpt {
        font-size: var(--text-base);
    }
    
    .post-meta {
        gap: var(--space-3);
    }
    
    .post-author {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .post-stats {
        flex-wrap: wrap;
    }
    
    .post-actions {
        flex-wrap: wrap;
    }
    
    .action-btn {
        flex: 1;
        justify-content: center;
        min-width: 100px;
    }
    
    /* Featured Image */
    .featured-img {
        border-radius: 0;
    }
    
    /* Author Box */
    .author-box {
        flex-direction: column;
        text-align: center;
    }
    
    .author-box-social {
        justify-content: center;
    }
    
    /* Search Results */
    .search-result-item {
        flex-direction: column;
    }
    
    .result-image-link {
        width: 100%;
    }
    
    .result-image {
        width: 100%;
        height: 180px;
    }
    
    /* Search Form */
    .search-input-group-large {
        flex-direction: column;
        border-radius: var(--radius-lg);
    }
    
    .search-input-large {
        width: 100%;
    }
    
    .search-submit-large {
        width: 100%;
        border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    }
    
    /* Search Filters */
    .filter-options {
        overflow-x: auto;
        flex-wrap: nowrap;
        padding-bottom: var(--space-2);
    }
    
    .filter-option {
        white-space: nowrap;
    }
    
    /* Posts Grid */
    .posts-grid {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   Extra Small Devices (Smartphones)
   ======================================== */
@media (max-width: 479px) {
    :root {
        --text-base: 14px;
        --text-sm: 13px;
        --text-xs: 12px;
    }
    
    /* Base */
    body {
        font-size: var(--text-base);
    }
    
    /* Topbar */
    .topbar-social {
        gap: var(--space-2);
    }

    .topbar-right {
        width: auto;
        justify-content: flex-end;
        gap: 6px;
        flex-wrap: wrap;
    }

    .topbar-links {
        gap: 6px;
        padding-right: 6px;
    }

    .topbar-link {
        padding: 4px 8px;
        font-size: 11px;
    }

    .user-toggle span {
        display: none;
    }
    
    .social-link {
        width: 28px;
        height: 28px;
    }
    
    .social-link svg {
        width: 14px;
        height: 14px;
    }
    
    /* Header */
    .logo-bengali {
        font-size: 28px;
    }
    
    .logo-news {
        font-size: 20px;
    }
    
    .logo-portal {
        font-size: 12px;
    }
    
    /* Navigation */
    .mobile-menu-toggle {
        padding: var(--space-2);
    }
    
    .hamburger span {
        width: 18px;
        height: 2px;
    }
    
    /* News Cards */
    .news-card-content {
        padding: var(--space-3) 0;
    }
    
    .news-card-title {
        font-size: var(--text-base);
    }
    
    .news-card-meta {
        flex-wrap: wrap;
        gap: var(--space-2);
    }
    
    .news-card-small .news-card-image-wrapper {
        width: 100px;
        height: 67px;
    }
    
    .news-card-small .news-card-title {
        font-size: var(--text-sm);
    }
    
    /* Category Block */
    .category-title {
        font-size: var(--text-lg);
    }
    
    .category-title::before {
        height: 18px;
    }
    
    /* Text News */
    .text-news-item {
        padding: var(--space-3);
    }
    
    .text-news-title {
        font-size: var(--text-sm);
    }
    
    /* Gallery */
    .gallery-grid {
        gap: var(--space-2);
    }
    
    .gallery-title {
        font-size: var(--text-sm);
    }
    
    /* Footer */
    .app-download-buttons {
        flex-direction: column;
    }
    
    /* Single Post */
    .post-category {
        font-size: var(--text-xs);
    }
    
    .post-title {
        font-size: var(--text-xl);
    }
    
    .post-stats span {
        font-size: var(--text-xs);
    }
    
    .post-tags {
        flex-direction: column;
        align-items: flex-start;
    }
    
    /* Breadcrumb */
    .breadcrumb-list {
        font-size: var(--text-xs);
    }
    
    /* Pagination */
    .pagination .page-item .page-link {
        min-width: 36px;
        height: 36px;
        font-size: var(--text-sm);
    }
    
    /* Ad Containers */
    .ad-970x90,
    .ad-670x340,
    .ad-670x90 {
        height: auto;
        min-height: 50px;
    }
}

/* ========================================
   Special Mobile Behaviors
   ======================================== */

/* Touch-friendly tap targets */
@media (pointer: coarse) {
    .nav-link,
    .action-btn,
    .social-link,
    .topbar-link {
        min-height: 44px;
        min-width: 44px;
    }
    
    .news-card-link {
        min-height: 100px;
    }
}

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

/* High Contrast Mode */
@media (prefers-contrast: high) {
    :root {
        --color-border: #000;
        --color-gray-light: #666;
    }
    
    .news-card,
    .sidebar-section,
    .category-block {
        border: 2px solid var(--color-border);
    }
}

/* Dark Mode Support (kept neutral for consistent news UI) */
@media (prefers-color-scheme: dark) {
    :root { color-scheme: light; }
}

/* Landscape orientation optimizations */
@media (orientation: landscape) and (max-height: 500px) {
    .mobile-menu-toggle .toggle-text {
        display: none;
    }
    
    .hero-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .hero-sidebar {
        flex-direction: row;
        max-height: 200px;
        overflow-y: auto;
    }
    
    .hero-sidebar .news-card-small {
        flex: 0 0 200px;
    }
}

/* Print (maintain some responsiveness) */
@media print {
    .container {
        max-width: 100%;
        padding: 0;
    }
    
    .content-grid {
        display: block;
    }
    
    .sidebar-container {
        display: none;
    }
}

/* Footer Newsletter */
@media (max-width: 1199px) {
    .footer-newsletter-card {
        gap: 16px;
        padding: 18px;
    }

    .footer-newsletter-copy h3 {
        font-size: 24px;
    }

    .footer-newsletter-form {
        width: min(100%, 560px);
    }
}

@media (max-width: 991px) {
    .footer-newsletter-card {
        flex-direction: column;
        align-items: flex-start;
    }

    .footer-newsletter-copy h3 {
        font-size: 24px;
    }

    .footer-newsletter-copy p {
        font-size: 16px;
    }

    .footer-newsletter-form {
        width: 100%;
    }
}

@media (max-width: 767px) {
    .footer-newsletter-section {
        padding-top: 12px;
    }

    .footer-newsletter-shell {
        padding: 14px;
    }

    .footer-newsletter-card {
        padding: 14px 12px;
        gap: 12px;
    }

    .footer-newsletter-copy h3 {
        font-size: 22px;
    }

    .footer-newsletter-copy p {
        font-size: 14px;
        margin-top: 6px;
    }

    .footer-newsletter-form {
        grid-template-columns: 1fr;
        gap: 8px;
    }

    .footer-newsletter-input {
        font-size: 15px;
        padding: 11px 12px;
    }

    .footer-newsletter-submit {
        width: 100%;
        min-height: 42px;
        font-size: 16px;
    }

    .footer-newsletter-feedback {
        margin-left: 2px;
        margin-right: 2px;
    }
}