/* ============================================================
   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;
    background: linear-gradient(160deg, #fdfdff 0%, #f4f6ff 45%, #ecf5fb 100%);
    border-radius: 22px;
    box-shadow: 0 1px 2px rgba(38, 30, 104, 0.05), 0 22px 44px -22px rgba(46, 32, 120, 0.24);
}

.single-post .post-meta {
    font-size: 0.9rem;
    color: #5b5c7e;
}

.single-post .post-meta i {
    color: #5b4ee6;
}

/* Post content typography */
.post-content {
    line-height: 1.8;
    font-size: 1.05rem;
    color: #1b1a3a;
}

.post-content :is(h2, h3, h4) {
    margin-block: 2rem 1rem;
    font-weight: 700;
    color: #2c2170;
    line-height: 1.4;
    text-shadow: 0 1px 0 rgba(255, 255, 255, 0.9);
}

.post-content h2 {
    font-size: 1.75rem;
    padding-bottom: var(--space-xs);
    border-bottom: 2px solid transparent;
    border-image: linear-gradient(90deg, #5b4ee6 0%, #7b6cf0 45%, #14a3b8 100%) 1;
}

.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 #5b4ee6;
    padding: var(--space-sm) var(--space-md);
    background: linear-gradient(135deg, #eef0ff 0%, #e7f4fa 100%);
    border-radius: 0 18px 18px 0;
    margin-block: var(--space-md);
    color: #5b5c7e;
    font-style: italic;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.85), 0 10px 24px -18px rgba(46, 32, 120, 0.35);
}

.post-content img {
    max-width: 100%;
    height: auto;
    border-radius: 16px;
    margin-block: var(--space-sm);
    box-shadow: 0 2px 6px rgba(38, 30, 104, 0.08), 0 18px 36px -18px rgba(46, 32, 120, 0.30);
}

.post-content a {
    color: #5b4ee6;
    text-decoration: underline;
    text-decoration-color: rgba(91, 78, 230, 0.45);
    text-underline-offset: 3px;
    transition: color 0.4s cubic-bezier(0.22, 0.61, 0.36, 1);
}

.post-content a:hover {
    color: #0f8a9d;
}

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

.post-content code {
    background: linear-gradient(135deg, #eef0ff 0%, #e4eefb 100%);
    padding: 2px 6px;
    border-radius: 6px;
    font-size: 0.9em;
    color: #c02a63;
}

.post-content pre {
    background: linear-gradient(145deg, #251c63 0%, #3a2b8f 48%, #0f6273 100%);
    color: #eef2ff;
    padding: var(--space-md);
    border-radius: 16px;
    overflow-x: auto;
    margin-block: var(--space-md);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.12), 0 20px 42px -22px rgba(37, 28, 99, 0.65);
}

.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 #dcdef5;
    text-align: start;
}

.post-content table th {
    background: linear-gradient(135deg, #eef1ff 0%, #e6f3f9 100%);
    font-weight: 600;
    color: #2c2170;
}

/* TOC */
.toc-box {
    border-inline-start: 3px solid #5b4ee6;
    background: linear-gradient(135deg, #f5f6ff 0%, #eaf5fa 100%);
    border-radius: 0 18px 18px 0;
    box-shadow: 0 1px 2px rgba(38, 30, 104, 0.05), 0 14px 28px -18px rgba(46, 32, 120, 0.28);
}

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

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

.toc-box ol li a {
    color: #45466e;
    transition: all 0.4s cubic-bezier(0.22, 0.61, 0.36, 1);
}

.toc-box ol li a:hover {
    color: #0f8a9d;
    text-decoration: underline !important;
    padding-inline-start: 4px;
}

/* Tags */
.post-tags .badge {
    background: linear-gradient(135deg, #eef0ff 0%, #e5f3f9 100%) !important;
    color: #43446e !important;
    padding: 6px 12px;
    font-weight: 500;
    border-radius: 999px;
    transition: all 0.4s cubic-bezier(0.22, 0.61, 0.36, 1);
}

.post-tags .badge:hover {
    background: linear-gradient(135deg, #5b4ee6 0%, #14a3b8 100%) !important;
    color: #ffffff !important;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px -2px rgba(91, 78, 230, 0.45), 0 2px 5px rgba(20, 163, 184, 0.35);
}

/* 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: linear-gradient(135deg, #2a1f66 0%, #4a3ec9 34%, #5b4ee6 62%, #14a3b8 100%);
    color: #fdfdff;
    position: relative;
    overflow: hidden;
}

.app-hero-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(120% 90% at 14% 8%, rgba(255, 255, 255, 0.22) 0%, rgba(255, 255, 255, 0) 56%),
                linear-gradient(180deg, rgba(10, 6, 40, 0.30) 0%, rgba(10, 6, 40, 0.10) 62%, rgba(10, 6, 40, 0.34) 100%);
    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 2px 20px rgba(10, 6, 40, 0.38);
}

.app-hero-section img {
    transition: transform 0.6s cubic-bezier(0.22, 0.61, 0.36, 1);
    filter: drop-shadow(0 24px 38px rgba(12, 8, 45, 0.42)) drop-shadow(0 4px 10px rgba(12, 8, 45, 0.25));
}

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

.text-white-50 {
    color: rgba(240, 245, 255, 0.78) !important;
}

/* ============================================
   3. App QR (AppQrSection)
   ============================================ */
.app-qr-section {
    background: linear-gradient(170deg, #f7f8ff 0%, #eef1ff 46%, #eaf6fb 100%);
}

.qr-card {
    transition: all 0.5s cubic-bezier(0.22, 0.61, 0.36, 1);
    border: 2px solid transparent;
    background-image: linear-gradient(150deg, #ffffff 0%, #f6f8ff 58%, #eef7fc 100%);
    box-shadow: 0 1px 2px rgba(38, 30, 104, 0.05), 0 16px 32px -20px rgba(46, 32, 120, 0.30);
}

.qr-card:hover {
    transform: scale(1.03);
    border-color: #f7a92e;
    box-shadow: 0 6px 18px -6px rgba(247, 169, 46, 0.45), 0 26px 48px -22px rgba(46, 32, 120, 0.38);
}

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

/* ============================================
   4. App Install Steps (AppInstallSection)
   ============================================ */
.app-install-section {
    background: linear-gradient(155deg, #f9faff 0%, #eff2ff 55%, #e9f7fc 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, #5b4ee6 0%, #7b6cf0 45%, #14a3b8 100%);
    color: #ffffff;
    box-shadow: 0 6px 16px -6px rgba(91, 78, 230, 0.55), 0 2px 5px rgba(20, 163, 184, 0.35);
}

.app-install-section .bg-white {
    transition: all 0.5s cubic-bezier(0.22, 0.61, 0.36, 1);
    position: relative;
    overflow: hidden;
    background-image: linear-gradient(150deg, #ffffff 0%, #f6f7ff 55%, #eef6fb 100%);
    border-radius: 18px;
    box-shadow: 0 1px 2px rgba(38, 30, 104, 0.05), 0 14px 30px -20px rgba(46, 32, 120, 0.28);
}

.app-install-section .bg-white:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px -8px rgba(91, 78, 230, 0.30), 0 30px 55px -25px rgba(46, 32, 120, 0.42);
}

.app-install-section .bg-white::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, #5b4ee6 0%, #7b6cf0 42%, #14a3b8 100%);
    transform: scaleY(0);
    transform-origin: top;
    transition: transform 0.5s cubic-bezier(0.22, 0.61, 0.36, 1);
}

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

/* ============================================
   5. App Showcase (AppShowcaseSection)
   ============================================ */
.app-showcase-section {
    background: linear-gradient(165deg, #fbfcff 0%, #f1f4ff 50%, #ebf6fb 100%);
}

.app-showcase-section img {
    transition: transform 0.6s cubic-bezier(0.22, 0.61, 0.36, 1);
    filter: drop-shadow(0 18px 30px rgba(30, 22, 80, 0.22)) drop-shadow(0 2px 6px rgba(30, 22, 80, 0.16));
}

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

.app-showcase-section .bg-white {
    transition: all 0.5s cubic-bezier(0.22, 0.61, 0.36, 1);
    border-inline-start: 3px solid transparent;
    background-image: linear-gradient(135deg, #ffffff 0%, #f6f7ff 60%, #eef7fc 100%);
    box-shadow: 0 1px 2px rgba(38, 30, 104, 0.05), 0 12px 26px -18px rgba(46, 32, 120, 0.26);
}

.app-showcase-section .bg-white:hover {
    border-inline-start-color: #5b4ee6;
    transform: translateX(5px);
    box-shadow: 0 6px 18px -8px rgba(91, 78, 230, 0.32), 0 24px 44px -22px rgba(46, 32, 120, 0.36);
}

/* ============================================
   6. Contact Sections
   ============================================ */
.contact-channels-section {
    background: linear-gradient(160deg, #fbfcff 0%, #f0f3ff 55%, #eaf6fb 100%);
}

.contact-channels-section article {
    transition: all 0.5s cubic-bezier(0.22, 0.61, 0.36, 1);
    border: 1px solid #dcdef5;
    background-image: linear-gradient(140deg, #ffffff 0%, #f7f8ff 55%, #eff7fc 100%);
    border-radius: 18px;
    box-shadow: 0 1px 2px rgba(38, 30, 104, 0.05), 0 12px 26px -20px rgba(46, 32, 120, 0.25);
}

.contact-channels-section article:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px -8px rgba(91, 78, 230, 0.32), 0 28px 52px -24px rgba(46, 32, 120, 0.40);
    border-color: #5b4ee6;
}

.contact-channels-section article ul li {
    transition: padding 0.4s cubic-bezier(0.22, 0.61, 0.36, 1);
}

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

/* Contact Quick */
.contact-quick-section {
    background: linear-gradient(150deg, #f7f9ff 0%, #eef1ff 50%, #e9f7fd 100%);
}

.contact-quick-section .contact-card {
    transition: all 0.5s cubic-bezier(0.22, 0.61, 0.36, 1);
    background-image: linear-gradient(150deg, #ffffff 0%, #f5f7ff 60%, #edf6fc 100%);
    box-shadow: 0 1px 2px rgba(38, 30, 104, 0.05), 0 12px 28px -20px rgba(46, 32, 120, 0.26);
}

.contact-quick-section .contact-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px -8px rgba(91, 78, 230, 0.32), 0 30px 55px -25px rgba(46, 32, 120, 0.42);
}

.contact-quick-section .contact-card i {
    transition: transform 0.5s cubic-bezier(0.22, 0.61, 0.36, 1);
    color: #5b4ee6;
}

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

/* Contact Form */
.contact-form-section {
    background: linear-gradient(160deg, #f8faff 0%, #eef1ff 50%, #eaf7fc 100%);
}

.contact-form-section .form-control,
.contact-form-section .form-select {
    border: 2px solid #dcdef5;
    background-image: linear-gradient(140deg, #ffffff 0%, #f8f9ff 100%);
    transition: all 0.4s cubic-bezier(0.22, 0.61, 0.36, 1);
}

.contact-form-section .form-control:focus,
.contact-form-section .form-select:focus {
    border-color: #5b4ee6;
    box-shadow: 0 0 0 0.2rem rgba(91, 78, 230, 0.16), 0 6px 18px -10px rgba(91, 78, 230, 0.45);
}

.contact-form-section button[type="submit"] {
    transition: all 0.5s cubic-bezier(0.22, 0.61, 0.36, 1);
}

.contact-form-section button[type="submit"]:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px -6px rgba(91, 78, 230, 0.50), 0 2px 6px rgba(20, 163, 184, 0.30);
}

/* Contact Commitments */
.contact-commitments-section {
    background: linear-gradient(155deg, #f9fbff 0%, #eff2ff 55%, #eaf7fc 100%);
}

.contact-commitments-section .bg-white {
    transition: all 0.5s cubic-bezier(0.22, 0.61, 0.36, 1);
    text-align: center;
    background-image: linear-gradient(150deg, #ffffff 0%, #f6f8ff 60%, #edf7fd 100%);
    border-radius: 18px;
    box-shadow: 0 1px 2px rgba(38, 30, 104, 0.05), 0 12px 26px -20px rgba(46, 32, 120, 0.25);
}

.contact-commitments-section .bg-white:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px -8px rgba(91, 78, 230, 0.32), 0 28px 52px -24px rgba(46, 32, 120, 0.40);
}

.contact-commitments-section .bg-white i {
    transition: transform 0.5s cubic-bezier(0.22, 0.61, 0.36, 1);
    color: #0f8a9d;
}

.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: #eef0ff;
    border-color: #dcdef5;
    border-inline-end: none;
    color: #4a4b78;
}

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: #5b4ee6;
    background-color: #e6e9ff;
    color: #4638c9;
}

main:has(> .container > .bg-white > form) .input-group:focus-within .form-control {
    border-color: #5b4ee6;
}

main:has(> .container > .bg-white > form) .form-check-input:checked {
    background-color: #5b4ee6;
    border-color: #5b4ee6;
}

main:has(> .container > .bg-white > form) button[type="submit"] {
    transition: all 0.5s cubic-bezier(0.22, 0.61, 0.36, 1);
    font-weight: 600;
    background-image: linear-gradient(120deg, #5b4ee6 0%, #7b6cf0 48%, #14a3b8 100%);
    box-shadow: 0 2px 6px rgba(91, 78, 230, 0.26), 0 12px 26px -14px rgba(20, 163, 184, 0.50);
}

main:has(> .container > .bg-white > form) button[type="submit"]:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px -6px rgba(91, 78, 230, 0.52), 0 3px 8px rgba(20, 163, 184, 0.35);
}

/* ============================================
   8. Icons
   ============================================ */
.icon-img {
    max-width: 32px;
    max-height: 32px;
    object-fit: contain;
    filter: drop-shadow(0 2px 4px rgba(38, 30, 104, 0.18));
}

.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 0.5s cubic-bezier(0.22, 0.61, 0.36, 1);
}

.hero-buttons .btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 26px -8px rgba(10, 6, 40, 0.48), 0 3px 8px rgba(10, 6, 40, 0.26);
}

.hero-buttons .btn-warning {
    background-color: #f7a92e;
    border-color: #f7a92e;
    color: #211a55;
    font-weight: 600;
}

.hero-buttons .btn-warning:hover {
    background-color: #e2961a;
    border-color: #e2961a;
}

.hero-buttons .btn-outline-light:hover {
    background-color: rgba(255, 255, 255, 0.18);
    color: #ffffff;
}

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

::-webkit-scrollbar-track {
    background: linear-gradient(180deg, #eef0ff 0%, #e6f2f8 100%);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, #5b4ee6 0%, #7b6cf0 50%, #14a3b8 100%);
    border-radius: 8px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, #4638c9 0%, #0f8a9d 100%);
}

/* Firefox */
* {
    scrollbar-width: thin;
    scrollbar-color: #5b4ee6 #eef0ff;
}

/* ============================================
   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;
        background: none !important;
        border-radius: 0 !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;
        text-shadow: none !important;
    }

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

/* ============================================
   12. Animations bổ sung
   ============================================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(24px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.06);
    }
}

.animate-fade-in {
    animation: fadeInUp 0.6s cubic-bezier(0.22, 0.61, 0.36, 1);
}

.animate-pulse {
    animation: pulse 2.4s 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;
        background-image: linear-gradient(142deg, rgba(129, 140, 248, 0.10) 0%, rgba(56, 189, 248, 0.06) 48%, rgba(244, 114, 182, 0.10) 100%);
        border-radius: 20px;
        box-shadow: 0 14px 30px -20px rgba(79, 70, 229, 0.38), inset 0 1px 0 rgba(255, 255, 255, 0.5);
        transition: background-image 0.5s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.5s cubic-bezier(0.22, 1, 0.36, 1);
    }

    .app-hero-section .badge.bg-warning {
        font-size: 0.85rem;
        color: #451a03;
        background-image: linear-gradient(118deg, #fef3c7 0%, #fcd34d 52%, #f59e0b 100%);
        border-color: #f59e0b;
        border-radius: 999px;
        box-shadow: 0 8px 18px -9px rgba(217, 119, 6, 0.65), inset 0 0 0 1px rgba(255, 255, 255, 0.4);
        text-shadow: 0 1px 0 rgba(255, 255, 255, 0.6);
        caret-color: #b45309;
        transition: box-shadow 0.45s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.45s cubic-bezier(0.22, 1, 0.36, 1);
    }

    .contact-channels-section article,
    .contact-quick-section .contact-card {
        padding: var(--space-md) !important;
        background-image: linear-gradient(162deg, rgba(255, 255, 255, 0.97) 0%, rgba(238, 242, 255, 0.92) 55%, rgba(224, 231, 255, 0.88) 100%);
        border-color: rgba(129, 140, 248, 0.35);
        border-radius: 22px;
        box-shadow: 0 22px 40px -26px rgba(30, 41, 59, 0.48), 0 3px 8px -3px rgba(99, 102, 241, 0.22);
        transition: box-shadow 0.55s cubic-bezier(0.22, 1, 0.36, 1), background-image 0.55s cubic-bezier(0.22, 1, 0.36, 1);
    }
}