/* Mobile-only UX optimization for News-AI */

@media (max-width: 768px) {
  html {
    font-size: 16px;
  }

  body {
    line-height: 1.7;
    -webkit-text-size-adjust: 100%;
  }

  .site-header {
    height: auto;
    padding: 10px 14px 12px;
  }

  .header-inner {
    max-width: none;
    height: auto;
    gap: 10px;
    align-items: stretch;
    flex-wrap: wrap;
  }

  .brand {
    gap: 12px;
    min-width: 0;
    flex: 1 1 auto;
  }

  .brand-logo {
    width: 34px;
    height: 34px;
  }

  .brand-text {
    min-width: 0;
  }

  .brand-name {
    display: block;
    font-size: 18px;
    letter-spacing: 0.5px;
    line-height: 1.2;
  }

  .brand-tagline {
    display: block;
    font-size: 9px;
    letter-spacing: 2px;
    margin-top: 2px;
  }

  .header-meta {
    width: 100%;
    justify-content: space-between;
    gap: 10px;
    order: 2;
  }

  .live-badge {
    padding: 6px 12px;
    font-size: 12px;
  }

  .date-display {
    font-size: 12px;
    text-align: right;
  }

  .header-nav {
    order: 3;
    width: calc(100% + 4px);
    margin: 0 -2px;
    gap: 8px;
    overflow-x: auto;
    overflow-y: hidden;
    flex-wrap: nowrap;
    padding: 2px 2px 4px;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
  }

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

  .nav-link {
    flex: 0 0 auto;
    padding: 10px 14px;
    border-radius: 999px;
    font-size: 13px;
    white-space: nowrap;
  }

  .ticker-wrap {
    height: 40px;
  }

  .ticker-label {
    padding: 0 12px;
    font-size: 11px;
    gap: 6px;
  }

  .ticker-track {
    overflow: hidden;
  }

  .ticker-content {
    display: flex;
    align-items: center;
    width: max-content;
    min-width: max-content;
    white-space: nowrap;
    will-change: transform;
  }

  .ticker-item {
    flex: 0 0 auto;
    font-size: 13px;
    padding: 0 18px;
  }

  .ticker-track::before,
  .ticker-track::after {
    width: 24px;
  }

  .main-container {
    padding: 14px 12px 104px;
  }

  .page-home,
  .page-detail {
    position: relative;
  }

  .hero-section {
    text-align: left;
    padding: 10px 2px 16px;
  }

  .hero-badge {
    margin-bottom: 12px;
    padding: 7px 12px;
    font-size: 11px;
    letter-spacing: 1px;
  }

  .hero-title {
    font-size: 28px;
    line-height: 1.16;
    margin-bottom: 8px;
  }

  .hero-sub {
    font-size: 14px;
    line-height: 1.65;
    letter-spacing: 0.3px;
    color: rgba(255,255,255,0.72);
    max-width: 32ch;
  }

  .news-app-section-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin: 4px 0 14px;
    padding: 0 2px;
  }

  .news-app-section-kicker {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 10px;
    border-radius: 999px;
    background: rgba(0, 245, 255, 0.08);
    border: 1px solid rgba(0, 245, 255, 0.16);
    color: #7fe8ff;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.8px;
  }

  .news-app-section-head h2 {
    margin: 10px 0 6px;
    font-size: 22px;
    line-height: 1.25;
  }

  .news-app-section-head p {
    margin: 0;
    font-size: 13px;
    line-height: 1.6;
    color: rgba(255,255,255,0.7);
  }

  .filter-bar {
    padding-bottom: 18px;
  }

  .filter-bar-inner {
    flex-wrap: nowrap;
    overflow-x: auto;
    gap: 8px;
    padding-bottom: 4px;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
  }

  .filter-bar-inner::-webkit-scrollbar {
    display: none;
  }

  .filter-btn {
    flex: 0 0 auto;
    padding: 10px 14px;
    border-radius: 999px;
    font-size: 13px;
    white-space: nowrap;
  }

  .date-bar {
    margin-bottom: 20px;
  }

  .date-bar-inner {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 14px;
    border-radius: 18px;
  }

  .date-status-group {
    align-items: flex-start;
    gap: 8px;
    flex-direction: column;
  }

  .date-status-text {
    font-size: 14px;
    line-height: 1.5;
  }

  .date-filter-form {
    width: 100%;
    margin-left: 0;
    gap: 8px;
  }

  .calendar-picker,
  .calendar-trigger-input {
    width: 100%;
  }

  .calendar-trigger-input {
    min-height: 46px;
    padding: 12px 14px;
    font-size: 15px;
    border-radius: 12px;
  }

  .calendar-panel {
    left: 50%;
    transform: translateX(-50%);
    width: min(92vw, 360px);
    border-radius: 16px;
  }

  .date-filter-hint {
    font-size: 12px;
    line-height: 1.6;
  }

  .news-count,
  .date-reset-link {
    width: 100%;
  }

  .date-reset-link {
    justify-content: center;
    padding: 11px 14px;
  }

  .seo-intro-section,
  .related-reading-section,
  .faq-section {
    margin-bottom: 20px;
  }

  .seo-intro-card,
  .related-reading-card,
  .faq-card {
    padding: 18px;
    border-radius: 18px;
  }

  .seo-intro-head h2,
  .related-reading-head h2,
  .faq-head h2 {
    font-size: 20px;
    line-height: 1.4;
  }

  .seo-intro-content p,
  .related-reading-head p,
  .faq-answer p {
    font-size: 14px;
    line-height: 1.85;
  }

  .seo-keyword-list,
  .related-reading-grid {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .faq-item {
    padding: 0 14px;
    border-radius: 14px;
  }

  .faq-item summary {
    padding: 15px 0;
    font-size: 15px;
    line-height: 1.5;
  }

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

  .news-card {
    border-radius: 20px;
    border-color: rgba(255, 255, 255, 0.08);
    box-shadow: 0 14px 36px rgba(8, 12, 24, 0.26);
  }

  .news-card::after {
    content: '';
    position: absolute;
    inset: 0;
    pointer-events: none;
    border-radius: inherit;
    background: linear-gradient(180deg, rgba(255,255,255,0.04), transparent 22%, transparent 80%, rgba(255,255,255,0.03));
  }

  .mobile-card-cover {
    position: relative;
    display: block;
    width: 100%;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    background: linear-gradient(135deg, rgba(0,245,255,0.14), rgba(124,92,255,0.16), rgba(255,255,255,0.04));
  }

  .mobile-card-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
  }

  .mobile-card-cover::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(6,10,20,0.04), rgba(6,10,20,0.1) 55%, rgba(6,10,20,0.34));
    pointer-events: none;
  }

  .mobile-card-cover-fallback {
    position: relative;
    z-index: 1;
    display: flex;
    height: 100%;
    flex-direction: column;
    justify-content: flex-end;
    gap: 8px;
    padding: 16px;
    color: #fff;
  }

  .mobile-card-cover-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    width: fit-content;
    padding: 6px 10px;
    border-radius: 999px;
    background: rgba(7, 12, 24, 0.38);
    border: 1px solid rgba(255,255,255,0.1);
    color: #8ceaff;
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0.2px;
  }

  .mobile-card-cover-fallback strong {
    font-size: 22px;
    line-height: 1.2;
  }

  .mobile-card-cover-fallback p {
    font-size: 13px;
    line-height: 1.6;
    color: rgba(255,255,255,0.82);
  }

  .mobile-card-cover.has-image img {
    transform: scale(1.01);
  }

  .news-card .card-body,
  .card-body {
    padding: 16px 16px 14px;
  }

  .news-card.rank-top {
    border-color: rgba(0, 245, 255, 0.2);
    box-shadow: 0 16px 44px rgba(0, 245, 255, 0.08);
  }

  .news-card.rank-top .mobile-card-cover {
    border-bottom-color: rgba(0,245,255,0.14);
  }

  .card-meta-top {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 10px 12px;
    align-items: center;
    margin-bottom: 12px;
  }

  .rank-number {
    min-width: 0;
    font-size: 18px;
    opacity: 0.9;
  }

  .cat-tag {
    width: fit-content;
    border-radius: 999px;
    font-size: 11px;
    padding: 5px 10px;
  }

  .meta-info {
    grid-column: 1 / -1;
    margin-left: 0;
    gap: 10px;
    font-size: 12px;
    flex-wrap: wrap;
  }

  .meta-source,
  .meta-date {
    min-width: 0;
  }

  .card-title {
    font-size: 20px;
    line-height: 1.42;
    margin-bottom: 10px;
    letter-spacing: 0.1px;
  }

  .content-text,
  .ai-content p {
    font-size: 15px;
    line-height: 1.75;
  }

  .card-read-strip {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 12px;
  }

  .read-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 10px;
    border-radius: 999px;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.08);
    color: rgba(255,255,255,0.82);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.2px;
  }

  .read-pill i {
    color: #8ceaff;
    font-size: 11px;
  }

  .card-content-preview {
    margin-bottom: 12px;
  }

  .content-text {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    color: rgba(255,255,255,0.72);
  }

  .ai-block {
    margin-top: 10px;
    margin-bottom: 0;
    padding: 13px;
    border-radius: 15px;
    background: rgba(255,255,255,0.03);
    backdrop-filter: blur(12px);
  }

  .ai-header {
    margin-bottom: 8px;
  }

  .ai-icon {
    width: 28px;
    height: 28px;
    font-size: 12px;
  }

  .ai-title {
    font-size: 14px;
  }

  .ai-link {
    width: 100%;
    justify-content: center;
    margin-top: 10px;
    padding: 11px 12px;
    border-radius: 12px;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.06);
  }

  .card-footer {
    flex-direction: column;
    gap: 10px;
    margin-top: 16px;
    padding-top: 14px;
  }

  .btn-primary,
  .btn-secondary {
    width: 100%;
    min-height: 48px;
    padding: 13px 16px;
    font-size: 15px;
    border-radius: 14px;
  }

  .btn-primary {
    box-shadow: 0 10px 24px rgba(0, 245, 255, 0.14);
  }

  .page-detail {
    padding-top: 8px;
    padding-bottom: 92px;
  }

  .breadcrumb-bar {
    margin-bottom: 12px;
  }

  .breadcrumb-inner {
    flex-wrap: wrap;
    gap: 8px;
    font-size: 13px;
  }

  .detail-hero-card,
  .detail-panel,
  .ai-section-card {
    border-radius: 20px;
  }

  .detail-hero-card {
    padding: 18px 16px;
    margin-bottom: 14px;
    box-shadow: 0 18px 40px rgba(8, 12, 24, 0.26);
  }

  .detail-hero-top {
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 12px;
  }

  .detail-hero-meta {
    gap: 8px 14px;
    font-size: 13px;
  }

  .detail-hero-title {
    font-size: 25px;
    line-height: 1.38;
    margin-bottom: 8px;
  }

  .detail-hero-sub {
    font-size: 14px;
    line-height: 1.75;
    margin-bottom: 16px;
  }

  .featured-quickread {
    margin: 14px 0 6px;
    padding: 14px;
    border-radius: 16px;
  }

  .featured-quickread-list {
    gap: 8px;
  }

  .featured-quickread-list li {
    font-size: 14px;
    line-height: 1.75;
    padding-left: 16px;
  }

  .detail-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .detail-btn,
  .source-link-btn,
  .detail-anchor-btn {
    width: 100%;
    justify-content: center;
    min-height: 48px;
  }

  .detail-btn-primary {
    grid-column: 1 / -1;
    order: -1;
  }

  .detail-btn-appjump {
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.08);
  }

  .detail-grid-layout,
  .detail-main-column {
    gap: 16px;
  }

  .detail-panel {
    padding: 16px;
    box-shadow: 0 14px 36px rgba(8, 12, 24, 0.24);
  }

  .panel-header {
    gap: 12px;
    margin-bottom: 16px;
  }

  .panel-icon {
    width: 42px;
    height: 42px;
    font-size: 16px;
    border-radius: 12px;
  }

  .panel-title {
    font-size: 18px;
  }

  .panel-subtitle {
    font-size: 13px;
    line-height: 1.6;
  }

  .content-block,
  .ai-content-block {
    padding: 15px;
    border-radius: 16px;
  }

  .section-eyebrow {
    margin: 2px 2px 12px;
  }

  .section-eyebrow span {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 7px 12px;
    border-radius: 999px;
    background: rgba(124, 92, 255, 0.12);
    border: 1px solid rgba(124, 92, 255, 0.2);
    color: #cbb7ff;
    font-size: 12px;
    font-weight: 700;
  }

  .content-block p,
  .rich-content-block p,
  .ai-content-text {
    font-size: 16px;
    line-height: 1.95;
  }

  .images-grid {
    gap: 12px;
  }

  .image-card {
    border-radius: 16px;
  }

  .image-card img {
    padding: 6px;
  }

  .ai-card-header,
  .ai-card-body,
  .ai-meta {
    padding-left: 18px;
    padding-right: 18px;
  }

  .ai-card-header {
    padding-top: 18px;
    padding-bottom: 16px;
  }

  .ai-card-body {
    padding-top: 18px;
    padding-bottom: 18px;
  }

  .ai-meta {
    padding-top: 12px;
    padding-bottom: 12px;
  }

  .ai-card-title {
    font-size: 17px;
    line-height: 1.5;
  }

  .ai-card-desc,
  .ai-word-count {
    font-size: 12px;
    line-height: 1.6;
  }

  .detail-side-column {
    order: -1;
  }

  .sticky-info-panel {
    position: static;
  }

  .detail-side-column .side-action-list {
    display: grid;
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .side-info-list,
  .side-action-list {
    gap: 10px;
  }

  .detail-mobile-readerbar {
    position: fixed;
    left: 12px;
    right: 12px;
    bottom: calc(max(10px, env(safe-area-inset-bottom)) + 84px);
    z-index: 59;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    padding: 10px;
    border-radius: 18px;
    background: rgba(15, 20, 38, 0.9);
    backdrop-filter: blur(18px);
    border: 1px solid rgba(255,255,255,0.08);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.28);
  }

  .detail-mobile-readerlink {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    min-height: 50px;
    border-radius: 14px;
    text-decoration: none;
    color: rgba(255,255,255,0.84);
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.06);
    font-size: 11px;
    font-weight: 700;
  }

  .detail-mobile-readerlink i {
    font-size: 14px;
  }

  .detail-mobile-readerlink-primary {
    color: #8ceaff;
    background: rgba(0,245,255,0.08);
    border-color: rgba(0,245,255,0.14);
  }

  .side-info-item {
    padding: 10px 12px;
    border-radius: 12px;
  }

  .side-info-item span,
  .side-info-item strong {
    font-size: 14px;
    line-height: 1.5;
  }

  .mobile-bottom-nav {
    position: fixed;
    left: 12px;
    right: 12px;
    bottom: max(10px, env(safe-area-inset-bottom));
    z-index: 60;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    padding: 10px;
    border-radius: 20px;
    background: rgba(13, 18, 33, 0.88);
    backdrop-filter: blur(18px);
    border: 1px solid rgba(255,255,255,0.08);
    box-shadow: 0 20px 44px rgba(0, 0, 0, 0.34);
  }

  .mobile-bottom-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    min-height: 52px;
    border-radius: 14px;
    text-decoration: none;
    color: rgba(255,255,255,0.7);
    font-size: 11px;
    font-weight: 700;
    background: transparent;
    border: 1px solid transparent;
  }

  .mobile-bottom-link i {
    font-size: 15px;
  }

  .mobile-bottom-link.active {
    color: #ffffff;
    background: rgba(255,255,255,0.06);
    border-color: rgba(255,255,255,0.08);
  }

  .mobile-bottom-link-accent {
    color: #8ceaff;
    background: rgba(0,245,255,0.08);
    border-color: rgba(0,245,255,0.12);
  }

  .site-footer {
    margin-top: 40px;
    padding: 28px 16px 36px;
  }
}

@media (min-width: 769px) {
  .mobile-bottom-nav,
  .detail-mobile-readerbar {
    display: none;
  }
}

@media (max-width: 640px) {
  .detail-actions {
    grid-template-columns: 1fr;
  }

  .detail-btn-primary {
    grid-column: auto;
    order: 0;
  }

  .detail-mobile-readerbar {
    left: 10px;
    right: 10px;
    bottom: calc(max(8px, env(safe-area-inset-bottom)) + 80px);
    padding: 8px;
  }
}

@media (max-width: 480px) {
  .main-container {
    padding-left: 12px;
    padding-right: 12px;
  }

  .hero-title {
    font-size: 26px;
  }

  .brand-name {
    font-size: 17px;
  }

  .date-bar-inner,
  .seo-intro-card,
  .related-reading-card,
  .faq-card,
  .detail-hero-card,
  .detail-panel,
  .ai-section-card {
    border-radius: 16px;
  }

  .news-app-section-head h2 {
    font-size: 20px;
  }

  .news-app-section-head p {
    font-size: 12px;
  }

  .card-title {
    font-size: 19px;
  }

  .detail-hero-title {
    font-size: 23px;
  }

  .content-block p,
  .rich-content-block p,
  .ai-content-text,
  .content-text,
  .ai-content p {
    font-size: 15px;
  }
}