/* ============================================================
   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);
    filter: drop-shadow(0 0 10px rgba(91, 140, 255, 0.28));
}

/* Post content typography */
.post-content {
    line-height: 1.8;
    font-size: 1.05rem;
    color: var(--color-text);
    text-shadow: 0 1px 0 rgba(255, 255, 255, 0.45);
}

.post-content :is(h2, h3, h4) {
    margin-block: 2rem 1rem;
    font-weight: 700;
    color: var(--color-primary-darker);
    line-height: 1.4;
    text-shadow: 0 0 16px rgba(91, 140, 255, 0.14);
}

.post-content h2 {
    font-size: 1.75rem;
    padding-bottom: var(--space-xs);
    border-bottom: 2px solid rgba(91, 140, 255, 0.3);
}

.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 #5b8cff;
    padding: var(--space-sm) var(--space-md);
    background: linear-gradient(135deg, rgba(91, 140, 255, 0.08), rgba(125, 211, 252, 0.1));
    border-radius: 0 14px 14px 0;
    margin-block: var(--space-md);
    color: #5f6f8e;
    font-style: italic;
    box-shadow: 0 0 0 1px rgba(91, 140, 255, 0.08), 0 10px 24px rgba(41, 72, 152, 0.08), 0 0 24px rgba(91, 140, 255, 0.18);
}

.post-content img {
    max-width: 100%;
    height: auto;
    border-radius: 14px;
    margin-block: var(--space-sm);
    box-shadow: 0 12px 28px rgba(35, 57, 105, 0.16), 0 0 24px rgba(91, 140, 255, 0.2);
    filter: saturate(1.03) contrast(1.02);
}

.post-content a {
    color: #4f7cff;
    text-decoration: underline;
    transition: color 0.28s ease, text-shadow 0.28s ease;
}

.post-content a:hover {
    color: #355fe0;
    text-shadow: 0 0 14px rgba(79, 124, 255, 0.3);
}

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

.post-content code {
    background: rgba(91, 140, 255, 0.08);
    padding: 2px 6px;
    border-radius: 8px;
    font-size: 0.9em;
    color: #c05a7a;
    box-shadow: inset 0 0 0 1px rgba(192, 90, 122, 0.12);
}

.post-content pre {
    background: linear-gradient(135deg, #24355f, #31497e);
    color: #f8fbff;
    padding: var(--space-md);
    border-radius: 14px;
    overflow-x: auto;
    margin-block: var(--space-md);
    box-shadow: 0 16px 36px rgba(23, 34, 62, 0.3), 0 0 24px rgba(91, 140, 255, 0.2);
}

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

.post-content table {
    width: 100%;
    border-collapse: collapse;
    margin-block: var(--space-md);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 10px 24px rgba(35, 57, 105, 0.08);
}

.post-content table th,
.post-content table td {
    padding: var(--space-xs) var(--space-sm);
    border: 1px solid rgba(134, 153, 196, 0.28);
    text-align: start;
}

.post-content table th {
    background: linear-gradient(180deg, rgba(91, 140, 255, 0.08), rgba(125, 211, 252, 0.08));
    font-weight: 600;
    color: #28406f;
}

/* TOC */
.toc-box {
    border-inline-start: 3px solid #5b8cff;
    box-shadow: 0 0 0 1px rgba(91, 140, 255, 0.08), 0 0 24px rgba(91, 140, 255, 0.16);
    border-radius: 12px;
}

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

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

.toc-box ol li a {
    transition: all 0.26s ease;
}

.toc-box ol li a:hover {
    color: #355fe0;
    text-decoration: underline !important;
    padding-inline-start: 4px;
    text-shadow: 0 0 14px rgba(91, 140, 255, 0.28);
}

/* Tags */
.post-tags .badge {
    background: linear-gradient(135deg, rgba(91, 140, 255, 0.08), rgba(125, 211, 252, 0.12)) !important;
    color: #50607d !important;
    padding: 6px 12px;
    font-weight: 500;
    transition: all 0.3s ease;
    border-radius: 999px;
    box-shadow: inset 0 0 0 1px rgba(91, 140, 255, 0.12), 0 0 16px rgba(91, 140, 255, 0.08);
}

.post-tags .badge:hover {
    background: linear-gradient(135deg, #5b8cff, #6dc7ff) !important;
    color: #ffffff !important;
    transform: translateY(-1px);
    box-shadow: 0 10px 20px rgba(53, 95, 224, 0.18), 0 0 24px rgba(91, 140, 255, 0.4);
}

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

.post-nav .btn {
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    border-radius: 12px;
    box-shadow: 0 8px 18px rgba(35, 57, 105, 0.08);
}

/* ============================================
   2. App Hero (AppHeroSection)
   ============================================ */
.app-hero-section {
    background: linear-gradient(135deg, #4c6fff 0%, #5b8cff 42%, #71c6ff 100%);
    color: #fdfefe;
    position: relative;
    overflow: hidden;
}

.app-hero-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.18), transparent 38%), radial-gradient(circle at 80% 30%, rgba(255, 255, 255, 0.12), transparent 34%), rgba(18, 30, 72, 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;
    text-shadow: 0 4px 18px rgba(15, 24, 58, 0.26), 0 0 24px rgba(125, 211, 252, 0.24);
}

.app-hero-section img {
    transition: transform 0.45s ease, filter 0.45s ease;
    filter: drop-shadow(0 18px 34px rgba(17, 30, 73, 0.26)) drop-shadow(0 0 24px rgba(125, 211, 252, 0.4));
}

.app-hero-section img:hover {
    transform: translateY(-10px);
    filter: drop-shadow(0 20px 38px rgba(17, 30, 73, 0.3)) drop-shadow(0 0 32px rgba(125, 211, 252, 0.6));
}

.text-white-50 {
    color: rgba(248, 251, 255, 0.72) !important;
}

/* ============================================
   3. App QR (AppQrSection)
   ============================================ */
.app-qr-section {
    background: linear-gradient(180deg, #f6faff 0%, #eef5ff 100%);
}

.qr-card {
    transition: all 0.32s ease;
    border: 2px solid rgba(91, 140, 255, 0.08);
    border-radius: 14px;
    box-shadow: 0 10px 24px rgba(35, 57, 105, 0.08), 0 0 0 rgba(91, 140, 255, 0);
    backdrop-filter: blur(4px);
}

.qr-card:hover {
    transform: scale(1.03);
    border-color: #6dc7ff;
    box-shadow: 0 16px 36px rgba(35, 57, 105, 0.14), 0 0 24px rgba(109, 199, 255, 0.4);
}

.qr-card img {
    image-rendering: pixelated;
    image-rendering: -moz-crisp-edges;
    image-rendering: crisp-edges;
    filter: drop-shadow(0 0 18px rgba(91, 140, 255, 0.16));
}

/* ============================================
   4. App Install Steps (AppInstallSection)
   ============================================ */
.app-install-section {
    background: linear-gradient(180deg, #f7fbff 0%, #eef4ff 100%);
}

.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;
    background: linear-gradient(135deg, #5b8cff, #6dc7ff);
    color: #ffffff;
    box-shadow: 0 10px 22px rgba(53, 95, 224, 0.2), 0 0 24px rgba(91, 140, 255, 0.4);
}

.app-install-section .bg-white {
    transition: all 0.34s ease;
    position: relative;
    overflow: hidden;
    border-radius: 14px;
    box-shadow: 0 10px 24px rgba(35, 57, 105, 0.08);
}

.app-install-section .bg-white:hover {
    transform: translateY(-5px);
    box-shadow: 0 18px 38px rgba(35, 57, 105, 0.14), 0 0 24px rgba(91, 140, 255, 0.4);
}

.app-install-section .bg-white::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, #5b8cff, #6dc7ff);
    transform: scaleY(0);
    transform-origin: top;
    transition: transform 0.34s ease;
    box-shadow: 0 0 18px rgba(91, 140, 255, 0.28);
}

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

/* ============================================
   5. App Showcase (AppShowcaseSection)
   ============================================ */
.app-showcase-section {
    background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
}

.app-showcase-section img {
    transition: transform 0.42s ease, filter 0.42s ease;
    filter: drop-shadow(0 14px 28px rgba(35, 57, 105, 0.14)) drop-shadow(0 0 24px rgba(91, 140, 255, 0.22));
}

.app-showcase-section img:hover {
    transform: translateY(-5px) rotate(-1deg);
    filter: drop-shadow(0 18px 34px rgba(35, 57, 105, 0.18)) drop-shadow(0 0 32px rgba(91, 140, 255, 0.4));
}

.app-showcase-section .bg-white {
    transition: all 0.32s ease;
    border-inline-start: 3px solid transparent;
    border-radius: 14px;
    box-shadow: 0 10px 22px rgba(35, 57, 105, 0.08);
}

.app-showcase-section .bg-white:hover {
    border-inline-start-color: #5b8cff;
    transform: translateX(5px);
    box-shadow: 0 16px 34px rgba(35, 57, 105, 0.12), 0 0 24px rgba(91, 140, 255, 0.4);
}

/* ============================================
   6. Contact Sections
   ============================================ */
.contact-channels-section {
    background: linear-gradient(180deg, #ffffff 0%, #f7fbff 100%);
}

.contact-channels-section article {
    transition: all 0.32s ease;
    border: 1px solid rgba(134, 153, 196, 0.2);
    border-radius: 14px;
    box-shadow: 0 10px 24px rgba(35, 57, 105, 0.06);
}

.contact-channels-section article:hover {
    transform: translateY(-5px);
    box-shadow: 0 18px 36px rgba(35, 57, 105, 0.12), 0 0 24px rgba(91, 140, 255, 0.4);
    border-color: #5b8cff;
}

.contact-channels-section article ul li {
    transition: padding 0.24s ease, color 0.24s ease;
}

.contact-channels-section article ul li:hover {
    padding-inline-start: 4px;
    color: #355fe0;
}

/* Contact Quick */
.contact-quick-section {
    background: linear-gradient(180deg, #f7fbff 0%, #edf4ff 100%);
}

.contact-quick-section .contact-card {
    transition: all 0.32s ease;
    border-radius: 14px;
    box-shadow: 0 10px 24px rgba(35, 57, 105, 0.08);
}

.contact-quick-section .contact-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 18px 36px rgba(35, 57, 105, 0.14), 0 0 24px rgba(91, 140, 255, 0.4);
}

.contact-quick-section .contact-card i {
    transition: transform 0.32s ease, filter 0.32s ease;
    filter: drop-shadow(0 0 12px rgba(91, 140, 255, 0.2));
}

.contact-quick-section .contact-card:hover i {
    transform: scale(1.1) rotate(-5deg);
    filter: drop-shadow(0 0 20px rgba(91, 140, 255, 0.4));
}

/* Contact Form */
.contact-form-section {
    background: linear-gradient(180deg, #f6faff 0%, #eef5ff 100%);
}

.contact-form-section .form-control,
.contact-form-section .form-select {
    border: 2px solid rgba(134, 153, 196, 0.22);
    transition: all 0.24s ease;
    border-radius: 12px;
    box-shadow: inset 0 1px 2px rgba(35, 57, 105, 0.04);
    caret-color: #5b8cff;
    accent-color: #5b8cff;
}

.contact-form-section .form-control:focus,
.contact-form-section .form-select:focus {
    border-color: #5b8cff;
    box-shadow: 0 0 0 0.2rem rgba(91, 140, 255, 0.14), 0 0 24px rgba(91, 140, 255, 0.18);
    outline-color: rgba(91, 140, 255, 0.28);
}

.contact-form-section button[type="submit"] {
    transition: all 0.32s ease;
    border-radius: 12px;
}

.contact-form-section button[type="submit"]:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 28px rgba(53, 95, 224, 0.18), 0 0 24px rgba(91, 140, 255, 0.4);
}

/* Contact Commitments */
.contact-commitments-section {
    background: linear-gradient(180deg, #f7fbff 0%, #eef4ff 100%);
}

.contact-commitments-section .bg-white {
    transition: all 0.32s ease;
    text-align: center;
    border-radius: 14px;
    box-shadow: 0 10px 24px rgba(35, 57, 105, 0.08);
}

.contact-commitments-section .bg-white:hover {
    transform: translateY(-5px);
    box-shadow: 0 18px 36px rgba(35, 57, 105, 0.14), 0 0 24px rgba(91, 140, 255, 0.4);
}

.contact-commitments-section .bg-white i {
    transition: transform 0.32s ease, filter 0.32s ease;
    filter: drop-shadow(0 0 12px rgba(91, 140, 255, 0.18));
}

.contact-commitments-section .bg-white:hover i {
    transform: scale(1.15);
    filter: drop-shadow(0 0 20px rgba(91, 140, 255, 0.36));
}

/* ============================================
   7. Login / Signup Forms
   ============================================ */
main:has(> .container > .bg-white > form) .input-group-text {
    background-color: rgba(91, 140, 255, 0.06);
    border-color: rgba(134, 153, 196, 0.24);
    border-inline-end: none;
    color: #4d628a;
}

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: #5b8cff;
    background-color: rgba(91, 140, 255, 0.12);
    box-shadow: 0 0 24px rgba(91, 140, 255, 0.16);
}

main:has(> .container > .bg-white > form) .input-group:focus-within .form-control {
    border-color: #5b8cff;
    box-shadow: 0 0 0 0.2rem rgba(91, 140, 255, 0.12);
}

main:has(> .container > .bg-white > form) .form-check-input:checked {
    background-color: #5b8cff;
    border-color: #5b8cff;
    box-shadow: 0 0 16px rgba(91, 140, 255, 0.28);
    accent-color: #5b8cff;
}

main:has(> .container > .bg-white > form) button[type="submit"] {
    transition: all 0.32s ease;
    font-weight: 600;
    border-radius: 12px;
}

main:has(> .container > .bg-white > form) button[type="submit"]:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 28px rgba(53, 95, 224, 0.18), 0 0 24px rgba(91, 140, 255, 0.4);
}

/* ============================================
   8. Icons
   ============================================ */
.icon-img {
    max-width: 32px;
    max-height: 32px;
    object-fit: contain;
    filter: drop-shadow(0 0 12px rgba(91, 140, 255, 0.18));
}

.icon-emoji {
    display: inline-block;
    line-height: 1;
    filter: drop-shadow(0 0 10px rgba(109, 199, 255, 0.2));
}

/* ============================================
   9. Hero Buttons (đã có ở theme.css nhưng bổ sung thêm)
   ============================================ */
.hero-buttons .btn {
    transition: all 0.32s ease;
    border-radius: 12px;
}

.hero-buttons .btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 18px 36px rgba(35, 57, 105, 0.16), 0 0 24px rgba(91, 140, 255, 0.4);
}

.hero-buttons .btn-warning {
    background-color: #ffd66b;
    border-color: #ffd66b;
    color: #273a68;
    font-weight: 600;
    box-shadow: 0 12px 24px rgba(255, 214, 107, 0.24), 0 0 24px rgba(255, 214, 107, 0.3);
}

.hero-buttons .btn-warning:hover {
    background-color: #ffc94a;
    border-color: #ffc94a;
    box-shadow: 0 14px 30px rgba(255, 201, 74, 0.28), 0 0 32px rgba(255, 201, 74, 0.4);
}

.hero-buttons .btn-outline-light:hover {
    background-color: rgba(255, 255, 255, 0.18);
    color: #ffffff;
    box-shadow: 0 0 24px rgba(255, 255, 255, 0.22);
}

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

::-webkit-scrollbar-track {
    background: linear-gradient(180deg, #eef4ff, #f8fbff);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, #7c9bff, #6dc7ff);
    border-radius: 10px;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.35), 0 0 16px rgba(91, 140, 255, 0.22);
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, #5b8cff, #53b8ff);
}

/* Firefox */
* {
    scrollbar-width: thin;
    scrollbar-color: #7c9bff #eef4ff;
}

/* ============================================
   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: #ffffff !important;
        color: #000000 !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: #000000 !important;
    }

    a[href^="http"]::after {
        content: " (" attr(href) ")";
        font-size: 9pt;
        color: #666666;
    }

    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: #000000 !important;
    }

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

/* ============================================
   12. Animations bổ sung
   ============================================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
        filter: blur(3px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
        filter: blur(0);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        filter: drop-shadow(0 0 0 rgba(91, 140, 255, 0));
    }
    50% {
        transform: scale(1.05);
        filter: drop-shadow(0 0 18px rgba(91, 140, 255, 0.28));
    }
}

.animate-fade-in {
    animation: fadeInUp 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

.animate-pulse {
    animation: pulse 2.4s ease-in-out 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;
        color: #dce7ff;
        text-shadow: 0 1px 0 rgba(9, 18, 44, 0.35), 0 0 18px rgba(110, 168, 255, 0.28);
        filter: saturate(1.08) brightness(1.02);
        opacity: 0.98;
        transition: color 0.45s ease-in-out, text-shadow 0.45s ease-in-out, filter 0.45s ease-in-out;
    }

    .app-hero-section .badge.bg-warning {
        font-size: 0.85rem;
        background: linear-gradient(135deg, #7c8cff 0%, #5fd3c7 52%, #8be0ff 100%);
        color: #0f1733;
        border-color: rgba(168, 228, 255, 0.7);
        border-style: solid;
        border-radius: 12px;
        box-shadow: 0 0 0 1px rgba(196, 235, 255, 0.18), 0 8px 20px rgba(16, 30, 70, 0.22), 0 0 24px rgba(95, 211, 199, 0.4);
        text-shadow: 0 1px 0 rgba(255, 255, 255, 0.2);
        outline-color: rgba(124, 140, 255, 0.45);
        caret-color: #5fd3c7;
        accent-color: #7c8cff;
        filter: saturate(1.12) contrast(1.03);
        opacity: 0.99;
        transition: background 0.4s ease, box-shadow 0.4s ease, border-color 0.4s ease, filter 0.4s ease;
    }

    .contact-channels-section article,
    .contact-quick-section .contact-card {
        padding: var(--space-md) !important;
        background: linear-gradient(180deg, rgba(20, 29, 61, 0.92) 0%, rgba(28, 41, 82, 0.9) 100%);
        color: #e8f1ff;
        border-color: rgba(126, 166, 255, 0.34);
        border-style: solid;
        border-radius: 14px;
        box-shadow: 0 0 0 1px rgba(180, 216, 255, 0.08), 0 14px 34px rgba(7, 14, 34, 0.34), 0 0 24px rgba(124, 140, 255, 0.24);
        text-shadow: 0 1px 0 rgba(6, 12, 30, 0.3);
        outline-color: rgba(95, 211, 199, 0.38);
        backdrop-filter: blur(10px) saturate(1.08);
        filter: brightness(1.01) saturate(1.04);
        opacity: 0.985;
        transition: background 0.45s ease, box-shadow 0.45s ease, border-color 0.45s ease, transform 0.45s ease;
    }
}