/* ============================================================
   SAISHI.CSS v3.0 - 赛事/文章/APP 页面专属样式
   ============================================================
   匹配 Section 模板:
   - ArticleSection (单文章详情)
   - AppHeroSection / AppQrSection / AppInstallSection / AppShowcaseSection
   - ContactChannelsSection / ContactFormSection / ContactQuickSection / ContactCommitmentsSection
   - LoginFormSection / SignupFormSection
   - SearchBoxSection (extends)
   - 滚动条 / 打印样式 / 图标
   ============================================================ */

/* ============================================
   1. Single Post (ArticleSection)
   ============================================ */
.single-post {
    overflow: hidden;
}

.single-post .post-meta {
    font-size: 0.9rem;
}

.single-post .post-meta i {
    color: var(--color-primary);
}

/* Post content typography */
.post-content {
    line-height: 1.8;
    font-size: 1.05rem;
    color: var(--color-text);
}

.post-content :is(h2, h3, h4) {
    margin-block: 2rem 1rem;
    font-weight: 700;
    color: var(--color-primary-darker);
    line-height: 1.4;
}

.post-content h2 {
    font-size: 1.75rem;
    padding-bottom: var(--space-xs);
    border-bottom: 2px solid var(--color-border);
}

.post-content h3 {
    font-size: 1.35rem;
}

.post-content :is(p, li) {
    margin-bottom: var(--space-sm);
}

.post-content blockquote {
    border-inline-start: 4px solid var(--color-primary);
    padding: var(--space-sm) var(--space-md);
    background: var(--color-bg-soft);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    margin-block: var(--space-md);
    color: var(--color-text-muted);
    font-style: italic;
}

.post-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    margin-block: var(--space-sm);
    box-shadow: var(--shadow-sm);
}

.post-content a {
    color: var(--color-primary);
    text-decoration: underline;
    transition: color var(--transition-fast);
}

.post-content a:hover {
    color: var(--color-primary-dark);
}

.post-content ul,
.post-content ol {
    padding-inline-start: 1.5rem;
}

.post-content code {
    background: var(--color-bg-muted);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.9em;
    color: var(--color-danger);
}

.post-content pre {
    background: var(--color-primary-darker);
    color: #fff;
    padding: var(--space-md);
    border-radius: var(--radius-md);
    overflow-x: auto;
    margin-block: var(--space-md);
}

.post-content pre code {
    background: transparent;
    color: inherit;
    padding: 0;
}

.post-content table {
    width: 100%;
    border-collapse: collapse;
    margin-block: var(--space-md);
}

.post-content table th,
.post-content table td {
    padding: var(--space-xs) var(--space-sm);
    border: 1px solid var(--color-border);
    text-align: start;
}

.post-content table th {
    background: var(--color-bg-muted);
    font-weight: 600;
}

/* TOC */
.toc-box {
    border-inline-start: 3px solid var(--color-primary);
}

.toc-box ol {
    padding-inline-start: 1.2rem;
}

.toc-box ol li {
    margin: 0.4rem 0;
}

.toc-box ol li a {
    transition: all var(--transition-fast);
}

.toc-box ol li a:hover {
    color: var(--color-primary-dark);
    text-decoration: underline !important;
    padding-inline-start: 4px;
}

/* Tags */
.post-tags .badge {
    background: var(--color-bg-muted) !important;
    color: #475569 !important;
    padding: 6px 12px;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.post-tags .badge:hover {
    background: var(--color-primary) !important;
    color: #fff !important;
    transform: translateY(-1px);
}

/* Post nav */
.post-nav {
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.post-nav .btn {
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ============================================
   2. App Hero (AppHeroSection)
   ============================================ */
.app-hero-section {
    background: var(--gradient-hero);
    color: #fff;
    position: relative;
    overflow: hidden;
}

.app-hero-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.2);
    z-index: 0;
}

.app-hero-section > .container {
    position: relative;
    z-index: 1;
}

.app-hero-section h1 {
    font-size: clamp(2rem, 4vw, 3rem);
    line-height: 1.2;
}

.app-hero-section img {
    transition: transform var(--transition-slow);
    filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.3));
}

.app-hero-section img:hover {
    transform: translateY(-10px);
}

.text-white-50 {
    color: rgba(255, 255, 255, 0.65) !important;
}

/* ============================================
   3. App QR (AppQrSection)
   ============================================ */
.app-qr-section {
    background: var(--color-bg-soft);
}

.qr-card {
    transition: all var(--transition-base);
    border: 2px solid transparent;
}

.qr-card:hover {
    transform: scale(1.03);
    border-color: var(--color-accent);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.qr-card img {
    image-rendering: pixelated;
    image-rendering: -moz-crisp-edges;
    image-rendering: crisp-edges;
}

/* ============================================
   4. App Install Steps (AppInstallSection)
   ============================================ */
.app-install-section {
    background: var(--color-bg-soft);
}

.app-install-section .badge.rounded-circle {
    width: 50px;
    height: 50px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 700;
}

.app-install-section .bg-white {
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.app-install-section .bg-white:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.app-install-section .bg-white::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--gradient-icon);
    transform: scaleY(0);
    transform-origin: top;
    transition: transform var(--transition-base);
}

.app-install-section .bg-white:hover::before {
    transform: scaleY(1);
}

/* ============================================
   5. App Showcase (AppShowcaseSection)
   ============================================ */
.app-showcase-section {
    background: var(--color-bg);
}

.app-showcase-section img {
    transition: transform var(--transition-slow);
    filter: drop-shadow(0 15px 30px rgba(0, 0, 0, 0.15));
}

.app-showcase-section img:hover {
    transform: translateY(-5px) rotate(-1deg);
}

.app-showcase-section .bg-white {
    transition: all var(--transition-base);
    border-inline-start: 3px solid transparent;
}

.app-showcase-section .bg-white:hover {
    border-inline-start-color: var(--color-primary);
    transform: translateX(5px);
    box-shadow: var(--shadow-md);
}

/* ============================================
   6. Contact Sections
   ============================================ */
.contact-channels-section {
    background: var(--color-bg);
}

.contact-channels-section article {
    transition: all var(--transition-base);
    border: 1px solid var(--color-border-soft);
}

.contact-channels-section article:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}

.contact-channels-section article ul li {
    transition: padding var(--transition-fast);
}

.contact-channels-section article ul li:hover {
    padding-inline-start: 4px;
}

/* Contact Quick */
.contact-quick-section {
    background: var(--color-bg-soft);
}

.contact-quick-section .contact-card {
    transition: all var(--transition-base);
}

.contact-quick-section .contact-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.contact-quick-section .contact-card i {
    transition: transform var(--transition-base);
}

.contact-quick-section .contact-card:hover i {
    transform: scale(1.1) rotate(-5deg);
}

/* Contact Form */
.contact-form-section {
    background: var(--color-bg-soft);
}

.contact-form-section .form-control,
.contact-form-section .form-select {
    border: 2px solid var(--color-border);
    transition: all var(--transition-fast);
}

.contact-form-section .form-control:focus,
.contact-form-section .form-select:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 0.2rem rgba(59, 130, 246, 0.1);
}

.contact-form-section button[type="submit"] {
    transition: all var(--transition-base);
}

.contact-form-section button[type="submit"]:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-primary);
}

/* Contact Commitments */
.contact-commitments-section {
    background: var(--color-bg-soft);
}

.contact-commitments-section .bg-white {
    transition: all var(--transition-base);
    text-align: center;
}

.contact-commitments-section .bg-white:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.contact-commitments-section .bg-white i {
    transition: transform var(--transition-base);
}

.contact-commitments-section .bg-white:hover i {
    transform: scale(1.15);
}

/* ============================================
   7. Login / Signup Forms
   ============================================ */
main:has(> .container > .bg-white > form) .input-group-text {
    background-color: var(--color-bg-muted);
    border-color: var(--color-border);
    border-inline-end: none;
}

main:has(> .container > .bg-white > form) .input-group .form-control {
    border-inline-start: none;
}

main:has(> .container > .bg-white > form) .input-group:focus-within .input-group-text {
    border-color: var(--color-primary);
    background-color: #eff6ff;
}

main:has(> .container > .bg-white > form) .input-group:focus-within .form-control {
    border-color: var(--color-primary);
}

main:has(> .container > .bg-white > form) .form-check-input:checked {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
}

main:has(> .container > .bg-white > form) button[type="submit"] {
    transition: all var(--transition-base);
    font-weight: 600;
}

main:has(> .container > .bg-white > form) button[type="submit"]:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-primary);
}

/* ============================================
   8. Icons
   ============================================ */
.icon-img {
    max-width: 32px;
    max-height: 32px;
    object-fit: contain;
}

.icon-emoji {
    display: inline-block;
    line-height: 1;
}

/* ============================================
   9. Hero Buttons (đã có ở theme.css nhưng bổ sung thêm)
   ============================================ */
.hero-buttons .btn {
    transition: all var(--transition-base);
}

.hero-buttons .btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.hero-buttons .btn-warning {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
    color: var(--color-primary-darker);
    font-weight: 600;
}

.hero-buttons .btn-warning:hover {
    background-color: var(--color-accent-dark);
    border-color: var(--color-accent-dark);
}

.hero-buttons .btn-outline-light:hover {
    background-color: rgba(255, 255, 255, 0.15);
    color: #fff;
}

/* ============================================
   10. 自定义滚动条
   ============================================ */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg-muted);
}

::-webkit-scrollbar-thumb {
    background: #94a3b8;
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-text
-muted);
}

/* Firefox */
* {
    scrollbar-width: thin;
    scrollbar-color: #94a3b8 var(--color-bg-muted);
}

/* ============================================
   11. Print Styles
   ============================================ */
@media print {
    :is(.header,
        .footer,
        .sidebar-widgets,
        .social-share,
        #back-to-top,
        .breadcrumb-nav,
        .notice-bar,
        .cta-banner-section,
        .post-nav,
        .related-posts,
        .author-box,
        .pagination,
        .navbar-toggler,
        .nav-item) {
        display: none !important;
    }

    body {
        background: #fff !important;
        color: #000 !important;
        font-size: 12pt;
    }

    .single-post {
        box-shadow: none !important;
        border: none !important;
        padding: 0 !important;
        max-width: 100% !important;
    }

    .post-content {
        font-size: 11pt;
        line-height: 1.6;
    }

    a {
        text-decoration: underline;
        color: #000 !important;
    }

    a[href^="http"]::after {
        content: " (" attr(href) ")";
        font-size: 9pt;
        color: #555;
    }

    a[href^="#"]::after,
    a[href^="javascript:"]::after,
    a[href^="mailto:"]::after,
    a[href^="tel:"]::after {
        content: "";
    }

    .post-content img {
        max-width: 100% !important;
        page-break-inside: avoid;
    }

    :is(h1, h2, h3, h4) {
        page-break-after: avoid;
        color: #000 !important;
    }

    p, li {
        orphans: 3;
        widows: 3;
    }
}

/* ============================================
   12. Animations bổ sung
   ============================================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

.animate-fade-in {
    animation: fadeInUp 0.6s ease-out;
}

.animate-pulse {
    animation: pulse 2s infinite;
}

/* ============================================
   13. Responsive
   ============================================ */
@media (max-width: 991.98px) {
    .post-content {
        font-size: 1rem;
    }

    .post-content h2 {
        font-size: 1.5rem;
    }

    .post-content h3 {
        font-size: 1.2rem;
    }
}

@media (max-width: 767.98px) {
    .single-post {
        padding: var(--space-md) !important;
    }

    .post-content {
        font-size: 0.95rem;
    }

    .post-content h2 {
        font-size: 1.35rem;
    }

    .post-nav {
        flex-direction: column;
    }

    .post-nav .btn {
        width: 100%;
    }

    .post-tags .badge {
        font-size: 0.8rem;
        padding: 4px 8px;
    }

    .app-hero-section h1 {
        font-size: 1.75rem;
    }

    .app-install-section .badge.rounded-circle {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }

    .toc-box {
        padding: var(--space-sm) !important;
    }

    .qr-card img {
        max-width: 140px !important;
    }
}

@media (max-width: 575.98px) {
    .app-hero-section .row .col-lg-7 {
        text-align: center;
    }

    .app-hero-section .badge.bg-warning {
        font-size: 0.85rem;
    }

    .contact-channels-section article,
    .contact-quick-section .contact-card {
        padding: var(--space-md) !important;
    }
}

/* ============================================
   14. Kaiyun synchronized pages
   ============================================ */
.ky4-page {
    min-height: 100vh;
    background-color: #061117;
    color: #e8f3f7;
}

.ky4-nav__link--active {
    color: #ffd33d !important;
}

.ky4-account.ky4-nav__link--active {
    color: #07121f !important;
    box-shadow: 0 0 0 2px rgba(255, 211, 61, 0.34);
}

.ky4-page--news {
    background-image:
        linear-gradient(110deg, rgba(4, 15, 31, 0.96), rgba(10, 32, 65, 0.78)),
        var(--ky-site-background) !important;
    background-position: center top !important;
    background-size: cover !important;
    background-repeat: no-repeat !important;
    background-attachment: fixed !important;
}

.ky4-page--news main,
.ky4-page--news .post-list-section {
    position: relative;
    min-height: 520px;
    background: transparent !important;
}

.ky4-page--app .app-hero-section {
    position: relative;
    isolation: isolate;
    min-height: 620px;
    background-image:
        linear-gradient(90deg, rgba(6, 17, 23, 0.96), rgba(6, 17, 23, 0.62)),
        var(--ky-site-background) !important;
    background-position: center !important;
    background-size: cover !important;
    background-repeat: no-repeat !important;
}

.ky4-page--app .app-hero-section > .container {
    position: relative;
    z-index: 2;
}

.ky4-page--app .app-hero-section .container > .row {
    width: 100% !important;
    max-width: 100% !important;
    margin-inline: 0 !important;
    padding-block: 42px !important;
    text-align: initial !important;
}

.ky4-page--app .app-hero-section .col-lg-7 {
    text-align: left !important;
}

.ky4-page--app .app-hero-section h1 {
    max-width: 16ch !important;
    margin-bottom: 18px !important;
    color: #ffffff !important;
    font-size: clamp(2.25rem, 3.8vw, 3rem) !important;
    font-weight: 850 !important;
    line-height: 1.12 !important;
    letter-spacing: -0.025em !important;
}

.ky4-page--app .app-hero-section img {
    width: min(100%, 420px);
    max-height: 440px;
    object-fit: cover;
}

.ky4-page--login main {
    position: relative;
    isolation: isolate;
    display: flex;
    align-items: center;
    min-height: 720px;
    background-image:
        linear-gradient(90deg, rgba(4, 14, 28, 0.46), rgba(4, 14, 28, 0.94)),
        var(--ky-site-background) !important;
    background-position: left center !important;
    background-size: cover !important;
    background-repeat: no-repeat !important;
}

.ky4-page--login main > .container {
    position: relative;
    z-index: 2;
    margin-right: max(5vw, 40px);
}

.ky4-hero__visual {
    overflow: hidden;
}

html body .ky4-hero__visual > img {
    width: 100%;
    height: 100%;
    min-height: 270px;
    display: block;
    object-fit: contain !important;
    object-position: center !important;
    background: #f4f6f8 !important;
}

html body .ky4-metric-grid img,
html body .ky4-feature-panels > article > img {
    object-fit: contain !important;
    object-position: center !important;
    background: #111c32 !important;
}

.ky4-hero__visual .ky4-live-chip {
    right: auto;
    left: 18px;
}

.ky4-page--about {
    --ky4-about-section-pad: clamp(20px, 2.2vw, 30px);
    background-image:
        linear-gradient(110deg, rgba(4, 15, 31, 0.97), rgba(10, 32, 65, 0.88)),
        var(--ky-site-background) !important;
    background-position: center top !important;
    background-size: cover !important;
    background-repeat: no-repeat !important;
    background-attachment: fixed !important;
}

.ky4-page--about .ky4-hero,
.ky4-page--about .ky4-stats {
    display: none !important;
}

.ky4-page--about .about-section,
.ky4-page--about .testimonials-section,
.ky4-page--about .security-section,
.ky4-page--about .honor-section,
.ky4-page--about .mission-section,
.ky4-page--about .deep-content-section,
.ky4-page--about .main-authors-section,
.ky4-page--about .trust-section,
.ky4-page--about .cta-banner-section {
    display: block !important;
    padding-block: 0 !important;
    color: #e8f3f7 !important;
    background: transparent !important;
}

.ky4-page--about :is(
    .about-section,
    .testimonials-section,
    .security-section,
    .honor-section,
    .mission-section,
    .deep-content-section,
    .main-authors-section,
    .trust-section,
    .cta-banner-section
) > .container {
    margin-block: 12px;
    padding: var(--ky4-about-section-pad);
    border: 1px solid rgba(91, 226, 193, 0.22);
    border-radius: 20px;
    background: rgba(5, 20, 35, 0.88);
    box-shadow: 0 18px 48px rgba(0, 0, 0, 0.26);
    backdrop-filter: blur(8px);
}

.ky4-page--about :is(.mb-5, .my-5) {
    margin-bottom: 1.5rem !important;
}

.ky4-page--about :is(.row.g-4, .row.g-5) {
    --bs-gutter-x: 1rem;
    --bs-gutter-y: 1rem;
}

.ky4-page--about :is(.about-card, .security-card, .honor-card, .mission-card) {
    padding: 1.25rem !important;
}

.ky4-page--about .about-section > .container > .text-center {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 320px;
    grid-template-rows: auto auto 1fr;
    gap: 10px 28px;
    align-items: center;
    margin-bottom: 20px !important;
    text-align: left !important;
}

.ky4-page--about .about-section > .container > .text-center > :is(h2, p) {
    grid-column: 1;
    margin-bottom: 0 !important;
}

.ky4-page--about .about-section .about-img-wrap {
    grid-column: 2;
    grid-row: 1 / span 3;
    width: 100% !important;
    margin: 0 !important;
}

.ky4-page--about .about-section .about-img-wrap img {
    width: 100%;
    max-height: 250px;
    object-fit: contain;
}

.ky4-page--about .about-section > .container > .row {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
    margin: 0;
}

.ky4-page--about .about-section > .container > .row > [class*="col-"] {
    width: auto;
    max-width: none;
    padding: 0;
}

.ky4-page--about :is(h1, h2, h3, h4, h5, h6) {
    color: #ffffff !important;
}

.ky4-page--about :is(p, li, small) {
    color: #b9cbd4 !important;
}

.ky4-page--contact .ky4-hero {
    display: none !important;
}

.ky4-media-watermark,
.ky4-hero__visual {
    position: relative;
}

.ky4-media-watermark::after,
.ky4-page--login main::after {
    content: "";
    position: absolute;
    top: 20px;
    left: 20px;
    width: clamp(86px, 12%, 150px);
    aspect-ratio: 377 / 138;
    box-sizing: content-box;
    padding: 8px;
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 10px;
    background-color: rgba(3, 12, 25, 0.62);
    background-image: var(--ky-site-logo);
    background-position: center;
    background-size: contain;
    background-repeat: no-repeat;
    box-shadow: 0 8px 28px rgba(0, 0, 0, 0.28);
    z-index: 4;
    pointer-events: none;
}

@media (max-width: 767.98px) {
    .ky4-page--about {
        --ky4-about-section-pad: 18px;
        background-attachment: scroll !important;
    }

    .ky4-page--about .about-section > .container > .text-center,
    .ky4-page--about .about-section > .container > .row {
        grid-template-columns: 1fr;
    }

    .ky4-page--about .about-section > .container > .text-center {
        text-align: center !important;
    }

    .ky4-page--about .about-section .about-img-wrap {
        grid-column: 1;
        grid-row: auto;
        max-width: 320px;
        margin-inline: auto !important;
    }

    .ky4-page--login main {
        min-height: auto;
        background-position: 58% center !important;
    }

    .ky4-page--login main > .container {
        margin-right: auto;
    }

    .ky4-page--app .app-hero-section {
        min-height: auto;
        background-position: 62% center !important;
    }

    .ky4-page--app .app-hero-section .container > .row {
        padding-block: 24px !important;
        text-align: center !important;
    }

    .ky4-page--app .app-hero-section .col-lg-7 {
        text-align: center !important;
    }

    .ky4-page--app .app-hero-section h1 {
        max-width: none !important;
        font-size: clamp(2rem, 10vw, 2.75rem) !important;
    }

    .ky4-page--app .app-hero-section .col-lg-5 .d-inline-block {
        width: 100%;
        max-width: 320px;
    }

    .ky4-page--app .app-hero-section img {
        width: 100% !important;
        max-width: 320px !important;
    }

    .ky4-media-watermark::after,
    .ky4-page--login main::after {
        top: 12px;
        left: 12px;
        width: 88px;
        padding: 6px;
    }
}