/* playtime-game.css - Mobile-first styling for playtime-game.cyou
   Palette: #87CEEB (sky blue) | #E9ECEF (light gray) | #1B263B (dark navy)
   All custom classes use the vbf6- prefix. */

:root {
    --vbf6-blue: #87CEEB;
    --vbf6-blue-dark: #4aa8cf;
    --vbf6-light: #E9ECEF;
    --vbf6-dark: #1B263B;
    --vbf6-dark-2: #243349;
    --vbf6-dark-3: #2e4159;
    --vbf6-gold: #f5c542;
    --vbf6-red: #ff5a6e;
    --vbf6-green: #2ecc71;
    --vbf6-shadow: 0 4px 18px rgba(0, 0, 0, .35);
    --vbf6-radius: 14px;
}

* { margin: 0; padding: 0; box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

html { font-size: 62.5%; scroll-behavior: smooth; }

body {
    font-family: "Segoe UI", "Helvetica Neue", Roboto, Arial, sans-serif;
    background: var(--vbf6-dark);
    color: var(--vbf6-light);
    line-height: 1.5;
    font-size: 1.5rem;
    max-width: 430px;
    margin: 0 auto;
    position: relative;
    overflow-x: hidden;
}

a { color: var(--vbf6-blue); text-decoration: none; }
img { max-width: 100%; display: block; }

/* ===== Header ===== */
.vbf6-header {
    position: fixed;
    top: 0; left: 0; right: 0;
    max-width: 430px;
    margin: 0 auto;
    z-index: 1000;
    background: linear-gradient(180deg, rgba(27,38,59,.96), rgba(27,38,59,.88));
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(135,206,235,.18);
    transition: box-shadow .25s ease;
}
.vbf6-header.vbf6-scrolled { box-shadow: 0 6px 22px rgba(0,0,0,.4); }
.vbf6-header-inner {
    display: flex; align-items: center; justify-content: space-between;
    padding: 0.8rem 1rem;
}
.vbf6-logo {
    display: flex; align-items: center; gap: 0.6rem;
    color: var(--vbf6-light); font-weight: 800; font-size: 1.7rem;
}
.vbf6-logo img { width: 34px; height: 34px; border-radius: 8px; }
.vbf6-logo span { color: var(--vbf6-blue); }

.vbf6-hamburger {
    background: none; border: none; color: var(--vbf6-light);
    font-size: 2.2rem; cursor: pointer; padding: 0.4rem; line-height: 1;
}
.vbf6-btn-group { display: flex; gap: 0.5rem; align-items: center; }

.vbf6-btn {
    display: inline-flex; align-items: center; gap: 0.4rem;
    padding: 0.7rem 1.2rem; border-radius: 999px;
    font-size: 1.3rem; font-weight: 700; cursor: pointer;
    border: none; transition: transform .15s ease, opacity .15s ease;
}
.vbf6-btn:active { transform: scale(0.94); }
.vbf6-btn-register {
    background: linear-gradient(135deg, var(--vbf6-blue), var(--vbf6-blue-dark));
    color: var(--vbf6-dark);
}
.vbf6-btn-login {
    background: transparent;
    color: var(--vbf6-light);
    border: 1.5px solid var(--vbf6-blue);
}

/* ===== Mobile Menu ===== */
.vbf6-mobile-menu {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(27,38,59,.98);
    z-index: 9999;
    padding: 7rem 1.5rem 2rem;
    transform: translateX(100%);
    transition: transform .3s ease;
    overflow-y: auto;
}
.vbf6-mobile-menu.vbf6-open { transform: translateX(0); }
.vbf6-close-btn {
    position: absolute; top: 1.2rem; right: 1.4rem;
    background: none; border: none; color: var(--vbf6-light);
    font-size: 2.6rem; line-height: 1; cursor: pointer;
}
.vbf6-mobile-menu a {
    display: block; padding: 1.2rem 0.5rem;
    border-bottom: 1px solid rgba(135,206,235,.14);
    color: var(--vbf6-light); font-size: 1.5rem; font-weight: 600;
}
.vbf6-mobile-menu a i { color: var(--vbf6-blue); margin-right: 0.8rem; width: 22px; }
.vbf6-menu-cta {
    display: flex; gap: 0.8rem; margin-top: 1.6rem;
}
.vbf6-menu-cta .vbf6-btn { flex: 1; justify-content: center; }

/* ===== Main ===== */
.vbf6-main { padding-top: 64px; }
@media (max-width: 768px) {
    .vbf6-main { padding-bottom: 80px; }
}

/* ===== Hero Slider ===== */
.vbf6-hero {
    margin: 1rem;
    border-radius: var(--vbf6-radius);
    overflow: hidden;
    position: relative;
    box-shadow: var(--vbf6-shadow);
}
.vbf6-slider { position: relative; }
.vbf6-slide {
    display: none;
    position: relative;
    min-height: 200px;
}
.vbf6-slide.vbf6-active { display: block; }
.vbf6-slide img { width: 100%; height: 200px; object-fit: cover; }
.vbf6-slide-overlay {
    position: absolute; left: 0; right: 0; bottom: 0;
    padding: 1.2rem; background: linear-gradient(180deg, transparent, rgba(27,38,59,.92));
}
.vbf6-slide-tag {
    display: inline-block; background: var(--vbf6-gold);
    color: var(--vbf6-dark); font-size: 1.1rem; font-weight: 700;
    padding: 0.25rem 0.7rem; border-radius: 6px; margin-bottom: 0.5rem;
}
.vbf6-slide-title { color: #fff; font-size: 2rem; font-weight: 800; margin-bottom: 0.3rem; }
.vbf6-slide-desc { color: var(--vbf6-light); font-size: 1.3rem; margin-bottom: 0.8rem; }
.vbf6-slide-cta {
    display: inline-block; background: var(--vbf6-blue); color: var(--vbf6-dark);
    padding: 0.6rem 1.4rem; border-radius: 999px; font-weight: 700; font-size: 1.3rem;
}
.vbf6-slider-arrows {
    position: absolute; top: 50%; width: 100%;
    display: flex; justify-content: space-between; padding: 0 0.6rem;
    transform: translateY(-50%); pointer-events: none;
}
.vbf6-arrow {
    background: rgba(0,0,0,.45); color: #fff; border: none;
    width: 32px; height: 32px; border-radius: 50%;
    cursor: pointer; font-size: 1.6rem; pointer-events: all;
}
.vbf6-dots {
    position: absolute; bottom: 0.6rem; left: 0; right: 0;
    display: flex; justify-content: center; gap: 0.4rem;
}
.vbf6-dot {
    width: 8px; height: 8px; border-radius: 50%;
    background: rgba(255,255,255,.45); cursor: pointer;
}
.vbf6-dot.vbf6-active { background: var(--vbf6-blue); width: 22px; border-radius: 4px; }

/* ===== Section base ===== */
.vbf6-section { padding: 1.6rem 1rem; }
.vbf6-section-head {
    display: flex; align-items: center; justify-content: space-between;
    margin-bottom: 1rem;
}
.vbf6-section-title {
    font-size: 1.8rem; font-weight: 800; color: var(--vbf6-light);
    display: flex; align-items: center; gap: 0.6rem;
}
.vbf6-section-title i { color: var(--vbf6-blue); }
.vbf6-section-more { color: var(--vbf6-blue); font-size: 1.25rem; font-weight: 600; }

/* ===== Category tabs ===== */
.vbf6-cat-tabs {
    display: flex; gap: 0.6rem; overflow-x: auto;
    padding: 0.4rem 0 1rem; -webkit-overflow-scrolling: touch;
}
.vbf6-cat-tabs::-webkit-scrollbar { display: none; }
.vbf6-cat-tab {
    flex: 0 0 auto; padding: 0.6rem 1.2rem;
    background: var(--vbf6-dark-2); color: var(--vbf6-light);
    border-radius: 999px; font-size: 1.25rem; font-weight: 600;
    border: 1px solid rgba(135,206,235,.12); cursor: pointer;
    display: inline-flex; align-items: center; gap: 0.4rem;
    white-space: nowrap;
}
.vbf6-cat-tab.vbf6-active {
    background: linear-gradient(135deg, var(--vbf6-blue), var(--vbf6-blue-dark));
    color: var(--vbf6-dark); border-color: transparent;
}

/* ===== Game grid ===== */
.vbf6-game-group { margin-bottom: 1.4rem; }
.vbf6-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.7rem;
}
.vbf6-card {
    background: var(--vbf6-dark-2);
    border-radius: 12px;
    overflow: hidden;
    position: relative;
    border: 1px solid rgba(135,206,235,.10);
    transition: transform .15s ease, box-shadow .15s ease;
}
.vbf6-card:active { transform: scale(0.96); }
.vbf6-card-img {
    position: relative; aspect-ratio: 1 / 1; background: #0f1828;
}
.vbf6-card-img img { width: 100%; height: 100%; object-fit: cover; }
.vbf6-card-badge {
    position: absolute; top: 4px; left: 4px;
    background: var(--vbf6-red); color: #fff;
    font-size: 0.95rem; font-weight: 700;
    padding: 0.1rem 0.4rem; border-radius: 4px;
}
.vbf6-card-badge.vbf6-hot { background: var(--vbf6-gold); color: var(--vbf6-dark); }
.vbf6-card-badge.vbf6-new { background: var(--vbf6-green); }
.vbf6-card-play {
    position: absolute; inset: 0;
    background: rgba(27,38,59,.65);
    display: flex; align-items: center; justify-content: center;
    opacity: 0; transition: opacity .2s ease;
}
.vbf6-card:hover .vbf6-card-play { opacity: 1; }
.vbf6-card-play span {
    background: var(--vbf6-blue); color: var(--vbf6-dark);
    padding: 0.4rem 1rem; border-radius: 999px; font-weight: 700; font-size: 1.2rem;
}
.vbf6-card-title {
    padding: 0.5rem 0.6rem; font-size: 1.15rem; font-weight: 600;
    color: var(--vbf6-light); text-align: center;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

/* ===== Promo banner ===== */
.vbf6-promo {
    margin: 1rem; padding: 1.2rem;
    border-radius: var(--vbf6-radius);
    background: linear-gradient(135deg, #2a3f5f, #1B263B);
    border: 1px solid rgba(135,206,235,.25);
    display: flex; align-items: center; gap: 1rem;
}
.vbf6-promo-icon {
    width: 46px; height: 46px; border-radius: 12px;
    background: var(--vbf6-blue); color: var(--vbf6-dark);
    display: flex; align-items: center; justify-content: center;
    font-size: 2.2rem; flex-shrink: 0;
}
.vbf6-promo-text { flex: 1; }
.vbf6-promo-text h3 { font-size: 1.4rem; color: #fff; margin-bottom: 0.2rem; }
.vbf6-promo-text p { font-size: 1.15rem; color: var(--vbf6-light); }
.vbf6-promo-btn {
    background: var(--vbf6-gold); color: var(--vbf6-dark);
    padding: 0.6rem 1rem; border-radius: 999px;
    font-weight: 700; font-size: 1.2rem; white-space: nowrap;
}

/* ===== Features ===== */
.vbf6-features {
    display: grid; grid-template-columns: repeat(2, 1fr);
    gap: 0.8rem; padding: 0;
}
.vbf6-feature {
    background: var(--vbf6-dark-2);
    border-radius: 12px; padding: 1rem;
    text-align: center;
    border: 1px solid rgba(135,206,235,.10);
}
.vbf6-feature-ico {
    width: 44px; height: 44px; border-radius: 50%;
    background: rgba(135,206,235,.15); color: var(--vbf6-blue);
    display: flex; align-items: center; justify-content: center;
    font-size: 2rem; margin: 0 auto 0.6rem;
}
.vbf6-feature h4 { color: #fff; font-size: 1.3rem; margin-bottom: 0.2rem; }
.vbf6-feature p { color: var(--vbf6-light); font-size: 1.1rem; line-height: 1.35; }

/* ===== SEO content ===== */
.vbf6-content {
    background: var(--vbf6-dark-2);
    border-radius: var(--vbf6-radius);
    padding: 1.4rem; margin: 1rem;
    line-height: 1.65;
}
.vbf6-content h2 {
    color: var(--vbf6-blue); font-size: 1.7rem;
    margin: 1rem 0 0.5rem; font-weight: 800;
}
.vbf6-content h2:first-child { margin-top: 0; }
.vbf6-content h3 {
    color: #fff; font-size: 1.4rem; margin: 0.8rem 0 0.4rem; font-weight: 700;
}
.vbf6-content p { color: var(--vbf6-light); margin-bottom: 0.6rem; font-size: 1.3rem; }
.vbf6-content ul { padding-left: 1.4rem; margin-bottom: 0.6rem; }
.vbf6-content li { color: var(--vbf6-light); margin-bottom: 0.3rem; font-size: 1.3rem; }
.vbf6-content a { color: var(--vbf6-blue); text-decoration: underline; }
.vbf6-content strong { color: #fff; }

/* ===== FAQ ===== */
.vbf6-faq { padding: 1rem; }
.vbf6-faq-item {
    background: var(--vbf6-dark-2);
    border-radius: 10px; margin-bottom: 0.7rem;
    overflow: hidden;
    border: 1px solid rgba(135,206,235,.10);
}
.vbf6-faq-q {
    width: 100%; background: none; border: none;
    text-align: left; padding: 1rem 1.2rem;
    color: #fff; font-size: 1.35rem; font-weight: 700;
    display: flex; justify-content: space-between; align-items: center;
    cursor: pointer;
}
.vbf6-faq-q i { color: var(--vbf6-blue); transition: transform .2s; }
.vbf6-faq-item.vbf6-open .vbf6-faq-q i { transform: rotate(180deg); }
.vbf6-faq-a {
    max-height: 0; overflow: hidden;
    transition: max-height .25s ease;
    padding: 0 1.2rem;
}
.vbf6-faq-a p { color: var(--vbf6-light); font-size: 1.25rem; padding-bottom: 1rem; }

/* ===== Bottom Nav ===== */
.vbf6-bottom-nav {
    position: fixed;
    bottom: 0; left: 0; right: 0;
    max-width: 430px; margin: 0 auto;
    height: 62px;
    background: linear-gradient(180deg, rgba(36,51,73,.98), rgba(27,38,59,1));
    border-top: 1px solid rgba(135,206,235,.18);
    display: flex; justify-content: space-around; align-items: center;
    z-index: 1000;
    box-shadow: 0 -3px 14px rgba(0,0,0,.35);
}
.vbf6-nav-btn {
    flex: 1; min-width: 60px; min-height: 60px;
    background: none; border: none;
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    color: var(--vbf6-light); cursor: pointer;
    gap: 0.2rem; padding: 0;
}
.vbf6-nav-btn i, .vbf6-nav-btn .material-icons,
.vbf6-nav-btn ion-icon { font-size: 22px; color: var(--vbf6-light); }
.vbf6-nav-btn span { font-size: 1rem; font-weight: 600; }
.vbf6-nav-btn.vbf6-active i, .vbf6-nav-btn.vbf6-active span,
.vbf6-nav-btn.vbf6-active .material-icons { color: var(--vbf6-blue); }
.vbf6-nav-btn:active { transform: scale(0.92); }
.vbf6-nav-btn.vbf6-promo-center i { color: var(--vbf6-gold); }
.vbf6-nav-btn.vbf6-promo-center span { color: var(--vbf6-gold); }

/* ===== Footer ===== */
.vbf6-footer {
    background: #111a2c;
    padding: 2rem 1rem;
    margin-top: 1rem;
    border-top: 1px solid rgba(135,206,235,.12);
}
.vbf6-footer h4 { color: var(--vbf6-blue); font-size: 1.35rem; margin-bottom: 0.6rem; }
.vbf6-footer p, .vbf6-footer a { color: var(--vbf6-light); font-size: 1.2rem; }
.vbf6-footer a:hover { color: var(--vbf6-blue); }
.vbf6-footer-links {
    display: grid; grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem; margin-bottom: 1.2rem;
}
.vbf6-footer-links a { padding: 0.2rem 0; }
.vbf6-footer-bottom {
    border-top: 1px solid rgba(135,206,235,.10);
    padding-top: 1rem; text-align: center; font-size: 1.1rem; color: #8aa0bb;
}

/* ===== Back to top ===== */
.vbf6-back-top {
    position: fixed;
    right: 1rem; bottom: 76px;
    width: 42px; height: 42px; border-radius: 50%;
    background: var(--vbf6-blue); color: var(--vbf6-dark);
    border: none; cursor: pointer; font-size: 1.8rem;
    opacity: 0; pointer-events: none;
    transition: opacity .2s, transform .2s;
    z-index: 999;
}
.vbf6-back-top.vbf6-show { opacity: 1; pointer-events: auto; }

/* ===== Desktop ===== */
@media (min-width: 769px) {
    .vbf6-bottom-nav { display: none; }
    body { max-width: 430px; box-shadow: 0 0 50px rgba(0,0,0,.4); }
}