/* JFun PWA layer v1 - all new classes start with jf- */
html[data-theme="dark"]{color-scheme:dark}
html[data-theme="dark"] body{background:var(--bg-color);color:var(--text-color)}
html[data-theme="dark"] .copy-btn, html[data-theme="dark"] .rules-content{background:var(--card-bg);color:var(--text-color);border-color:var(--border-color)}
html[data-theme="dark"] input:not([type="checkbox"]):not([type="radio"]):not([type="submit"]):not([type="button"]),html[data-theme="dark"] select,html[data-theme="dark"] textarea{background:var(--ui-input-bg);color:var(--ui-text);border-color:var(--ui-input-border)}
html[data-theme="dark"] ::placeholder{color:var(--ui-muted)}
.jf-nav{position:fixed;bottom:0;left:0;right:0;z-index:1000;padding:8px 10px;padding-bottom:max(8px,env(safe-area-inset-bottom,0px));}
.jf-nav-inner{max-width:600px;margin:0 auto;display:flex;justify-content:space-around;align-items:center;gap:5px}
.jf-nav-item{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;padding:8px 12px;flex:1;max-width:100px;text-decoration:none;position:relative;overflow:hidden;}
.jf-nav-item::before{content:'';position:absolute;top:0;left:50%;transform:translateX(-50%);width:0;height:3px;}
.jf-nav-item:hover::before{width:30px}
.jf-nav-item.active{background:var(--ui-grad-soft)}
.jf-nav-item.active::before{width:100%}
.jf-nav-icon{height:22px;display:flex;align-items:center;justify-content:center;}
.jf-nav-item.active .jf-nav-icon{transform:scale(1.1)}
body.jf-has-nav{padding-bottom:calc(74px + env(safe-area-inset-bottom,0px)) !important}
body.modal-open .jf-nav{transform:translateY(100%)}
body.jf-kbd .jf-nav,body.jf-kbd .jf-install{display:none}
#jf-toast-wrap{position:fixed;top:calc(12px + env(safe-area-inset-top,0px));left:50%;transform:translateX(-50%);z-index:100000;display:flex;flex-direction:column;gap:8px;width:min(92vw,420px);pointer-events:none}
.jf-toast{pointer-events:auto;display:flex;align-items:center;gap:10px;padding:12px 14px;opacity:0;transform:translateY(-10px);transition:opacity .25s ease,transform .25s ease;cursor:pointer}
.jf-toast.jf-show{opacity:1;transform:none}
.jf-toast-icon{flex:0 0 auto;width:22px;height:22px;display:flex;align-items:center;justify-content:center}
.jf-toast-text{flex:1;word-break:break-word}
#jf-progress{position:fixed;top:0;left:0;height:3px;width:0;background:var(--jf-active);z-index:100001;opacity:0;transition:width .4s ease,opacity .3s ease}
.jf-skel-overlay{position:fixed;top:0;left:0;right:0;bottom:0;z-index:99990;background:var(--bg-color);padding:calc(16px + env(safe-area-inset-top,0px)) 14px 90px;display:none;overflow:hidden}
.jf-skel-overlay.jf-on{display:block}
.jf-skel-overlay .jf-skel-inner{max-width:600px;margin:0 auto}
.jf-skel{background:linear-gradient(90deg,var(--jf-skel-a) 25%,var(--jf-skel-b) 37%,var(--jf-skel-a) 63%);background-size:400% 100%;animation:jf-shimmer 1.2s ease infinite;border-radius: var(--ui-r-sm)}
.jf-skel-bar{height:44px;margin-bottom:16px}
.jf-skel-hero{height:120px;margin-bottom:16px}
.jf-skel-row{height:64px;margin-bottom:12px}
@keyframes jf-shimmer{0%{background-position:100% 50%}100%{background-position:0 50%}}
.jf-install{position:fixed;left:12px;right:12px;bottom:calc(16px + env(safe-area-inset-bottom,0px));max-width:480px;margin:0 auto;background:var(--jf-nav-bg);color:var(--jf-fg);border:1px solid var(--jf-nav-border);border-radius: var(--ui-r-sm);box-shadow:var(--ui-shadow);padding:12px 14px;display:none;align-items:center;gap:10px;z-index:1001;font-family:'Poppins','Arial',sans-serif}
.jf-install.jf-on{display:flex}
.jf-install.jf-has-bar{bottom:calc(84px + env(safe-area-inset-bottom,0px))}
.jf-install-icon img{width:40px;height:40px;border-radius: var(--ui-r-sm);display:block}
.jf-install-text{flex:1;font-size: var(--ui-fs-xs);line-height:1.4;color:var(--jf-text)}
.jf-install-text strong{display:block;font-size: var(--ui-fs-sm);color:var(--jf-fg)}
.jf-btn-primary{background:var(--ui-grad-btn);color:var(--ui-on-accent);border:0;border-radius: var(--ui-r-sm);padding:8px 14px;font-weight:600;font-size: var(--ui-fs-xs);cursor:pointer;font-family:inherit}
.jf-btn-ghost{background:transparent;border:0;color:var(--jf-text);font-size: var(--ui-fs-xs);cursor:pointer;padding:8px;font-family:inherit}
@media (prefers-reduced-motion:reduce){.jf-skel{animation:none}.jf-toast,.jf-nav,.jf-nav-item,#jf-progress{transition:none}}
@media print{.jf-nav,.jf-install,.jf-skel-overlay,#jf-toast-wrap,#jf-progress{display:none !important}}