/* ========================================
   Mosaic Arena — Responsive
   ======================================== */

/* Large Desktop (1440px+) */
@media (max-width: 1440px) {
    :root {
        --max-width: 1280px;
    }

    .hero-grid {
        gap: 12px;
    }
}

/* Desktop (1024px - 1280px) */
@media (max-width: 1280px) {
    .hero-cover {
        min-height: 350px;
    }

    .cover-title {
        font-size: 1.6rem;
    }

    .block-body {
        gap: 16px;
    }
}

/* Tablet (768px - 1024px) */
@media (max-width: 1024px) {
    :root {
        --nav-height: 72px;
    }

    .nav-inner {
        gap: 16px;
        padding: 0 16px;
    }

    .wordmark {
        font-size: 1.2rem;
    }

    .nav-main {
        gap: 20px;
        margin-left: auto;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
    }

    .nav-main::-webkit-scrollbar {
        display: none;
    }

    .nav-main a {
        font-size: 0.85rem;
    }

    .hero {
        padding: 16px;
    }

    .hero-grid {
        grid-template-areas:
            "cover cover"
            "quick quick"
            "scroll scroll";
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .hero-cover {
        min-height: 280px;
    }

    .hero-quick {
        grid-template-columns: repeat(4, 1fr);
    }

    .quick-card img {
        height: 60px;
    }

    .scroll-track {
        grid-template-columns: repeat(3, 1fr);
    }

    .mini-cards {
        grid-template-columns: repeat(3, 1fr);
    }

    .block {
        padding: 40px 16px;
        margin-bottom: 24px;
    }

    .block-body {
        grid-template-columns: 1fr;
    }

    .tactical-body {
        grid-template-columns: 1fr;
    }

    .block-feature {
        min-height: 240px;
    }

    .combined-body {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .combined-divider {
        width: 100%;
        height: 2px;
        min-height: auto;
    }

    .combined-half {
        padding: 0;
    }

    .combined-left,
    .combined-right {
        padding: 0;
    }

    .card-grid {
        grid-template-columns: 1fr 1fr 1fr;
    }

    .footer-inner {
        grid-template-columns: 1fr;
        gap: 24px;
        text-align: center;
    }

    .footer-links {
        flex-direction: row;
        justify-content: center;
        flex-wrap: wrap;
    }

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

    .side-nav {
        display: none;
    }
}

/* Mobile (< 768px) */
@media (max-width: 768px) {
    :root {
        --nav-height: 56px;
    }

    .nav-inner {
        padding: 0 12px;
        gap: 8px;
    }

    .wordmark {
        font-size: 0.95rem;
        padding: 2px 8px;
    }

    .nav-main {
        gap: 12px;
        margin-left: auto;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
    }

    .nav-main::-webkit-scrollbar {
        display: none;
    }

    .nav-main a {
        font-size: 0.72rem;
        letter-spacing: 0.02em;
    }

    .hero {
        padding: 12px;
        margin-top: var(--nav-height);
    }

    .hero-grid {
        gap: 10px;
        grid-template-areas:
            "cover"
            "quick"
            "scroll";
    }

    .hero-cover {
        min-height: 200px;
    }

    .cover-badge {
        font-size: 0.65rem;
        padding: 4px 10px;
        top: 10px;
        left: 10px;
    }

    .cover-overlay {
        padding: 20px 14px 14px;
    }

    .cover-title {
        font-size: 1.15rem;
    }

    .cover-excerpt {
        font-size: 0.78rem;
        -webkit-line-clamp: 2;
    }

    .hero-quick {
        grid-template-columns: 1fr 1fr;
        gap: 8px;
    }

    .quick-card {
        padding: 10px;
        gap: 6px;
    }

    .quick-card img {
        height: 50px;
    }

    .quick-card h4 {
        font-size: 0.78rem;
        -webkit-line-clamp: 2;
    }

    .quick-card .quick-tag {
        font-size: 0.62rem;
    }

    .scroll-track {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .mini-block {
        padding: 14px;
    }

    .mini-title {
        font-size: 1rem;
        margin-bottom: 12px;
        padding-bottom: 6px;
    }

    .mini-cards {
        grid-template-columns: 1fr 1fr 1fr;
        gap: 8px;
    }

    .mini-card img {
        height: 48px;
    }

    .mini-card p {
        font-size: 0.68rem;
        -webkit-line-clamp: 2;
    }

    .block {
        padding: 28px 12px;
        margin-bottom: 20px;
        border-radius: 12px;
    }

    .block-header {
        flex-wrap: wrap;
        gap: 6px;
        margin-bottom: 20px;
        padding-bottom: 12px;
    }

    .block-title {
        font-size: 1.35rem;
    }

    .block-subtitle {
        font-size: 0.72rem;
        width: 100%;
        order: 3;
    }

    .block-body {
        grid-template-columns: 1fr;
        gap: 14px;
    }

    .tactical-body {
        grid-template-columns: 1fr;
    }

    .block-feature {
        min-height: 180px;
        order: -1;
        aspect-ratio: 16 / 10;
    }

    .feature-caption {
        padding: 16px 14px;
    }

    .feature-caption h3 {
        font-size: 1rem;
        margin-bottom: 4px;
        line-height: 1.25;
    }

    .feature-caption p {
        font-size: 0.75rem;
        -webkit-line-clamp: 2;
    }

    .article-item {
        flex-direction: row;
        align-items: flex-start;
        padding: 10px;
        gap: 10px;
    }

    .article-item img {
        width: 64px;
        height: 64px;
        border-radius: 6px;
    }

    .article-item .item-body h4 {
        font-size: 0.82rem;
        line-height: 1.25;
        -webkit-line-clamp: 2;
        margin-bottom: 2px;
    }

    .article-item .item-body p {
        font-size: 0.7rem;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        margin-top: 2px;
    }

    .article-item .item-tags {
        margin-top: 4px;
        gap: 3px;
    }

    .article-item .item-tags span {
        font-size: 0.58rem;
        padding: 1px 5px;
    }

    .combined-body {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .combined-divider {
        width: 100%;
        height: 2px;
        min-height: auto;
    }

    .combined-half {
        padding: 0;
    }

    .combined-left,
    .combined-right {
        padding: 0;
    }

    .combined-subtitle {
        font-size: 1.15rem;
        margin-bottom: 14px;
        padding-bottom: 8px;
    }

    .card-grid {
        grid-template-columns: 1fr 1fr;
        gap: 10px;
    }

    .card-grid .grid-card img {
        height: 90px;
    }

    .card-grid .grid-card .grid-title {
        padding: 8px;
        font-size: 0.72rem;
    }

    .footer {
        padding: 32px 16px 20px;
        margin-top: 32px;
    }

    .footer-inner {
        gap: 20px;
    }

    .footer-wordmark {
        font-size: 1.2rem;
    }

    .footer-links {
        flex-direction: row;
        gap: 16px;
        flex-wrap: wrap;
        justify-content: center;
    }

    .footer-links a {
        font-size: 0.85rem;
    }

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

    .footer-copy p {
        font-size: 0.7rem;
    }

    .modal-container {
        width: 94%;
        max-height: 82vh;
    }

    .modal-content {
        padding: 20px 16px;
    }

    .modal-content .modal-img {
        height: 180px;
        margin-bottom: 16px;
    }

    .modal-content h2 {
        font-size: 1.25rem;
        margin-bottom: 12px;
    }

    .modal-content .modal-text {
        font-size: 0.85rem;
        line-height: 1.6;
    }

    .modal-close {
        width: 32px;
        height: 32px;
        font-size: 1.3rem;
        top: 12px;
        right: 12px;
    }

    .sub-page {
        padding: 32px 16px;
    }

    .sub-page h1 {
        font-size: 1.7rem;
    }

    .sub-page h2 {
        font-size: 1.2rem;
    }

    .sub-page p {
        font-size: 0.9rem;
    }
}

/* Small Mobile (< 480px) */
@media (max-width: 480px) {
    .nav-inner {
        gap: 6px;
        padding: 0 10px;
    }

    .wordmark {
        font-size: 0.85rem;
        padding: 2px 6px;
    }

    .nav-main {
        gap: 10px;
    }

    .nav-main a {
        font-size: 0.62rem;
        letter-spacing: 0.01em;
    }

    .hero {
        padding: 10px;
    }

    .hero-cover {
        min-height: 180px;
    }

    .cover-title {
        font-size: 1.05rem;
    }

    .cover-excerpt {
        font-size: 0.72rem;
        -webkit-line-clamp: 2;
    }

    .hero-quick {
        grid-template-columns: 1fr;
        gap: 8px;
    }

    .quick-card {
        flex-direction: row;
        align-items: center;
        padding: 8px;
    }

    .quick-card img {
        width: 64px;
        height: 64px;
        flex-shrink: 0;
    }

    .quick-card h4 {
        font-size: 0.78rem;
    }

    .mini-cards {
        grid-template-columns: 1fr 1fr;
    }

    .mini-card img {
        height: 56px;
    }

    .block {
        padding: 24px 10px;
        margin-bottom: 16px;
    }

    .block-title {
        font-size: 1.2rem;
    }

    .block-subtitle {
        font-size: 0.68rem;
    }

    .block-feature {
        min-height: 140px;
        aspect-ratio: 16 / 10;
    }

    .feature-caption h3 {
        font-size: 0.92rem;
    }

    .feature-caption p {
        font-size: 0.7rem;
    }

    .article-item {
        padding: 8px;
        gap: 8px;
    }

    .article-item img {
        width: 52px;
        height: 52px;
    }

    .article-item .item-body h4 {
        font-size: 0.78rem;
        -webkit-line-clamp: 2;
    }

    .article-item .item-body p {
        font-size: 0.66rem;
        -webkit-line-clamp: 1;
    }

    .article-item .item-tags {
        gap: 2px;
        margin-top: 3px;
    }

    .article-item .item-tags span {
        font-size: 0.55rem;
        padding: 1px 4px;
    }

    .combined-subtitle {
        font-size: 1.05rem;
        margin-bottom: 12px;
    }

    .card-grid {
        grid-template-columns: 1fr;
    }

    .card-grid .grid-card img {
        height: 140px;
    }

    .card-grid .grid-card .grid-title {
        padding: 10px;
        font-size: 0.8rem;
    }

    .footer {
        padding: 28px 12px 16px;
    }

    .footer-wordmark {
        font-size: 1.1rem;
    }

    .footer-links a {
        font-size: 0.8rem;
    }

    .modal-content h2 {
        font-size: 1.1rem;
    }
}