:root{
  --bf-purple-50:#f5f2ff;--bf-purple-100:#ebe5ff;--bf-purple-200:#ddd3ff;--bf-purple-500:#7357d9;--bf-purple-600:#6247c8;--bf-purple-700:#5137b6;
  --bf-orange-50:#fff7e9;--bf-orange-400:#f4a340;--bf-orange-500:#ef8f1f;
  --bf-gray-25:#fbfbfd;--bf-gray-50:#f7f7fa;--bf-gray-100:#ededf2;--bf-gray-200:#dfdfe6;--bf-gray-300:#cbcbd5;--bf-gray-500:#858392;--bf-gray-600:#666473;--bf-gray-900:#292733;
  --bf-success:#17835f;--bf-danger:#c13d4d;--bf-info:#2878c7;
  --bf-radius-sm:12px;--bf-radius-md:18px;--bf-radius-lg:26px;--bf-radius-xl:32px;
  --bf-shadow-sm:0 6px 18px rgba(50,40,90,.06);--bf-shadow:0 18px 50px rgba(50,40,90,.09);--bf-shadow-float:0 20px 60px rgba(58,42,100,.14);
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-height:100vh;color:var(--bf-gray-900);background:radial-gradient(circle at 96% 2%,rgba(115,87,217,.10),transparent 28rem),radial-gradient(circle at 4% 96%,rgba(244,163,64,.09),transparent 25rem),var(--bf-gray-50);font-family:Vazirmatn,Tahoma,Arial,sans-serif;line-height:1.75}a{text-decoration:none;color:inherit}button,input,select,textarea{font:inherit}.bf-app{min-height:100vh}.bf-shell{width:min(1180px,calc(100% - 32px));margin-inline:auto}.bf-topbar{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.86);backdrop-filter:blur(18px);border-bottom:1px solid rgba(223,223,230,.8)}.bf-topbar__inner{height:74px;display:flex;align-items:center;justify-content:space-between;gap:16px}.bf-brand{display:inline-flex;align-items:center;gap:10px;font-weight:900}.bf-brand__mark{width:42px;height:42px;display:grid;place-items:center;border-radius:14px;color:#fff;background:linear-gradient(145deg,var(--bf-purple-500),#947be9);box-shadow:0 10px 24px rgba(115,87,217,.28)}.bf-brand__spark{color:var(--bf-orange-400)}.bf-brand small{display:block;font-size:.67rem;color:var(--bf-gray-500);font-weight:700;line-height:1.2}.bf-topbar__actions{display:flex;align-items:center;gap:8px}.bf-icon-btn{width:42px;height:42px;border:1px solid var(--bf-gray-100);border-radius:14px;background:#fff;display:grid;place-items:center;color:var(--bf-gray-600);cursor:pointer}.bf-icon-btn svg{width:20px;height:20px}.bf-profile-chip{display:flex;align-items:center;gap:9px;padding:5px 6px 5px 12px;border:1px solid var(--bf-gray-100);border-radius:16px;background:#fff}.bf-avatar{width:38px;height:38px;border-radius:13px;display:grid;place-items:center;background:linear-gradient(145deg,var(--bf-purple-100),var(--bf-orange-50));color:var(--bf-purple-600);font-weight:900}.bf-profile-chip strong{font-size:.85rem}.bf-profile-chip small{display:block;color:var(--bf-gray-500);font-size:.7rem}.bf-layout{display:grid;grid-template-columns:250px minmax(0,1fr);gap:24px;padding:26px 0 90px}.bf-sidebar{position:sticky;top:100px;align-self:start;background:rgba(255,255,255,.92);border:1px solid rgba(255,255,255,.9);border-radius:var(--bf-radius-lg);box-shadow:var(--bf-shadow);padding:14px}.bf-nav-title{padding:9px 12px;color:var(--bf-gray-500);font-size:.72rem;font-weight:800}.bf-nav{display:grid;gap:5px}.bf-nav a{display:flex;align-items:center;gap:11px;min-height:48px;padding:0 13px;border-radius:14px;color:var(--bf-gray-600);font-weight:700;font-size:.9rem;transition:.2s}.bf-nav a:hover{background:var(--bf-gray-50);color:var(--bf-gray-900)}.bf-nav a.is-active{background:linear-gradient(135deg,var(--bf-purple-50),#fff);color:var(--bf-purple-600);box-shadow:inset 0 0 0 1px var(--bf-purple-100)}.bf-nav svg{width:21px;height:21px}.bf-sidebar__foot{margin-top:12px;padding:13px;background:linear-gradient(135deg,var(--bf-purple-600),#8d70e6);border-radius:18px;color:#fff}.bf-sidebar__foot small{opacity:.82}.bf-sidebar__foot b{display:block;font-size:1.15rem}.bf-content{min-width:0}.bf-page-head{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:22px}.bf-page-head h1{margin:0;font-size:clamp(1.55rem,3vw,2.25rem);line-height:1.3}.bf-page-head p{margin:5px 0 0;color:var(--bf-gray-600);font-size:.9rem}.bf-page-tools{display:flex;gap:8px;flex-wrap:wrap}.bf-card{background:rgba(255,255,255,.94);border:1px solid rgba(255,255,255,.95);border-radius:var(--bf-radius-lg);box-shadow:var(--bf-shadow-sm);padding:20px}.bf-card--flush{padding:0;overflow:hidden}.bf-card--accent{background:linear-gradient(135deg,#fff,var(--bf-purple-50));border-color:var(--bf-purple-100)}.bf-grid{display:grid;gap:16px}.bf-grid--4{grid-template-columns:repeat(4,minmax(0,1fr))}.bf-grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}.bf-grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}.bf-stat{position:relative;overflow:hidden;min-height:132px}.bf-stat:after{content:"";position:absolute;width:88px;height:88px;border-radius:50%;left:-24px;bottom:-24px;background:var(--bf-purple-50)}.bf-stat__top{display:flex;align-items:center;justify-content:space-between}.bf-stat__icon{width:44px;height:44px;border-radius:14px;display:grid;place-items:center;background:var(--bf-purple-50);color:var(--bf-purple-600)}.bf-stat__icon.is-orange{background:var(--bf-orange-50);color:var(--bf-orange-500)}.bf-stat__icon.is-green{background:#ecf9f4;color:var(--bf-success)}.bf-stat__icon svg{width:22px;height:22px}.bf-stat small{color:var(--bf-gray-500);font-weight:700}.bf-stat strong{position:relative;z-index:1;display:block;margin-top:10px;font-size:1.8rem}.bf-section{margin-top:22px}.bf-section-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}.bf-section-head h2,.bf-section-head h3{margin:0;font-size:1.05rem}.bf-link{color:var(--bf-purple-600);font-size:.83rem;font-weight:800}.bf-button{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 16px;border:0;border-radius:13px;cursor:pointer;font-weight:800;transition:.2s}.bf-button:hover{transform:translateY(-1px)}.bf-button--primary{color:#fff;background:linear-gradient(135deg,var(--bf-purple-500),var(--bf-purple-600));box-shadow:0 10px 22px rgba(115,87,217,.22)}.bf-button--secondary{color:var(--bf-purple-600);background:var(--bf-purple-50)}.bf-button--soft{color:var(--bf-gray-600);background:#fff;border:1px solid var(--bf-gray-100)}.bf-button--danger{color:var(--bf-danger);background:#fff0f2}.bf-badge{display:inline-flex;align-items:center;gap:5px;padding:5px 9px;border-radius:999px;background:var(--bf-purple-50);color:var(--bf-purple-600);font-size:.72rem;font-weight:800}.bf-badge.is-orange{background:var(--bf-orange-50);color:#b86609}.bf-badge.is-green{background:#ecf9f4;color:var(--bf-success)}.bf-muted{color:var(--bf-gray-600);font-size:.86rem}.bf-hero{display:grid;grid-template-columns:1.35fr .65fr;gap:18px;align-items:stretch}.bf-hero__main{position:relative;overflow:hidden;background:linear-gradient(135deg,#6d51d3,#8f75e6);color:#fff;min-height:210px;padding:28px}.bf-hero__main:before,.bf-hero__main:after{content:"";position:absolute;border-radius:50%;background:rgba(255,255,255,.09)}.bf-hero__main:before{width:210px;height:210px;left:-60px;top:-90px}.bf-hero__main:after{width:160px;height:160px;right:-45px;bottom:-80px}.bf-hero__main h2{position:relative;margin:7px 0 8px;font-size:1.55rem}.bf-hero__main p{position:relative;margin:0;max-width:590px;opacity:.9}.bf-hero__actions{position:relative;margin-top:22px;display:flex;gap:9px;flex-wrap:wrap}.bf-hero__actions .bf-button--secondary{background:#fff;color:var(--bf-purple-600)}.bf-hero__side{display:grid;gap:12px}.bf-quick{display:flex;align-items:center;gap:13px;padding:16px;background:#fff;border:1px solid var(--bf-gray-100);border-radius:20px;box-shadow:var(--bf-shadow-sm)}.bf-quick__icon{flex:0 0 46px;height:46px;border-radius:15px;display:grid;place-items:center;background:var(--bf-orange-50);color:var(--bf-orange-500)}.bf-quick svg{width:23px;height:23px}.bf-quick b{display:block;font-size:.9rem}.bf-quick small{color:var(--bf-gray-500);font-size:.75rem}.bf-pin{display:flex;gap:14px;align-items:flex-start;padding:18px;border:1px solid #ffe1bd;background:linear-gradient(135deg,#fffaf3,#fff);border-radius:20px}.bf-pin__icon{width:42px;height:42px;flex:0 0 42px;border-radius:14px;display:grid;place-items:center;background:var(--bf-orange-50);color:var(--bf-orange-500)}.bf-list{display:grid;gap:10px}.bf-list-item{display:flex;align-items:center;gap:13px;padding:14px;background:#fff;border:1px solid var(--bf-gray-100);border-radius:18px;transition:.2s}.bf-list-item:hover{border-color:var(--bf-purple-100);box-shadow:var(--bf-shadow-sm);transform:translateY(-1px)}.bf-list-item__avatar{width:48px;height:48px;flex:0 0 48px;border-radius:16px;display:grid;place-items:center;background:linear-gradient(145deg,var(--bf-purple-100),#fff);color:var(--bf-purple-600);font-weight:900}.bf-list-item__body{min-width:0;flex:1}.bf-list-item__body b{display:block}.bf-list-item__body p{margin:2px 0;color:var(--bf-gray-500);font-size:.8rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.bf-list-item__meta{text-align:left;white-space:nowrap}.bf-list-item__meta small{display:block;color:var(--bf-gray-500);font-size:.7rem}.bf-empty{display:grid;place-items:center;text-align:center;min-height:270px;padding:36px}.bf-empty__icon{width:72px;height:72px;border-radius:24px;display:grid;place-items:center;background:var(--bf-purple-50);color:var(--bf-purple-600)}.bf-empty__icon svg{width:34px;height:34px}.bf-chat-shell{display:grid;grid-template-rows:auto minmax(420px,64vh) auto;background:#fff;border:1px solid var(--bf-gray-100);border-radius:var(--bf-radius-lg);overflow:hidden;box-shadow:var(--bf-shadow)}.bf-chat-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:15px 18px;border-bottom:1px solid var(--bf-gray-100)}.bf-chat-head__who{display:flex;align-items:center;gap:11px}.bf-chat-head__who b{display:block}.bf-chat-head__who small{color:var(--bf-success);font-size:.72rem}.bf-chat-head__actions{display:flex;gap:7px}.bf-chat-body{overflow-y:auto;padding:20px;background:linear-gradient(rgba(247,247,250,.92),rgba(247,247,250,.92)),radial-gradient(circle at 20px 20px,var(--bf-purple-100) 2px,transparent 2px);background-size:auto,34px 34px}.bf-chat-day{width:max-content;margin:0 auto 14px;padding:4px 10px;border-radius:999px;background:#fff;color:var(--bf-gray-500);font-size:.7rem;box-shadow:var(--bf-shadow-sm)}.bf-message{display:flex;margin:8px 0}.bf-message.mine{justify-content:flex-start}.bf-message__bubble{max-width:min(72%,620px);padding:11px 13px;border-radius:17px 17px 17px 5px;background:#fff;border:1px solid var(--bf-gray-100);box-shadow:0 4px 14px rgba(50,40,90,.04)}.bf-message.mine .bf-message__bubble{background:linear-gradient(135deg,var(--bf-purple-50),#f1ecff);border-color:var(--bf-purple-100);border-radius:17px 17px 5px 17px}.bf-message__bubble img{display:block;width:100%;max-height:360px;object-fit:cover;border-radius:13px;margin-top:8px}.bf-message__meta{display:flex;justify-content:flex-end;gap:6px;margin-top:3px;color:var(--bf-gray-500);font-size:.66rem}.bf-chat-pin{margin:10px 14px 0;padding:10px 12px;display:flex;align-items:center;gap:9px;border-radius:14px;background:var(--bf-orange-50);border-right:3px solid var(--bf-orange-400);font-size:.78rem}.bf-composer{display:flex;align-items:center;gap:8px;padding:12px;border-top:1px solid var(--bf-gray-100);background:#fff}.bf-composer__input{flex:1;min-height:46px;padding:0 14px;border:1px solid var(--bf-gray-200);border-radius:14px;background:var(--bf-gray-25);outline:0}.bf-composer__input:focus{border-color:var(--bf-purple-500);box-shadow:0 0 0 4px rgba(115,87,217,.10);background:#fff}.bf-file{position:relative;overflow:hidden}.bf-file input{position:absolute;inset:0;opacity:0;cursor:pointer}.bf-marathon-card{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:16px;padding:18px;background:#fff;border:1px solid var(--bf-gray-100);border-radius:20px}.bf-marathon-card__icon{width:56px;height:56px;border-radius:18px;display:grid;place-items:center;background:linear-gradient(145deg,var(--bf-purple-50),var(--bf-orange-50));color:var(--bf-purple-600)}.bf-progress{height:7px;margin-top:10px;border-radius:99px;background:var(--bf-gray-100);overflow:hidden}.bf-progress span{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--bf-orange-400),var(--bf-purple-500))}.bf-challenge{position:relative;overflow:hidden}.bf-challenge:before{content:"";position:absolute;inset:0 auto 0 0;width:5px;background:var(--bf-orange-400)}.bf-challenge__score{display:flex;gap:7px;flex-wrap:wrap;margin-top:10px}.bf-score-chip{padding:5px 8px;background:var(--bf-gray-50);border-radius:9px;color:var(--bf-gray-600);font-size:.72rem}.bf-leader{display:flex;align-items:center;gap:12px;padding:13px 0;border-bottom:1px solid var(--bf-gray-100)}.bf-leader:last-child{border-bottom:0}.bf-rank{width:36px;height:36px;border-radius:12px;display:grid;place-items:center;background:var(--bf-gray-50);font-weight:900}.bf-rank.top{color:#9b6500;background:#fff3cf}.bf-leader__info{flex:1}.bf-leader__score{font-weight:900;color:var(--bf-purple-600)}.bf-feed{width:min(680px,100%);margin-inline:auto;display:grid;gap:16px}.bf-post{background:#fff;border:1px solid var(--bf-gray-100);border-radius:24px;overflow:hidden;box-shadow:var(--bf-shadow-sm)}.bf-post__head{display:flex;align-items:center;gap:11px;padding:15px}.bf-post__head>div:nth-child(2){flex:1}.bf-post__head b{display:block}.bf-post__head small{color:var(--bf-gray-500)}.bf-post__body{padding:0 15px 15px}.bf-post__body p{margin:0}.bf-post__media{aspect-ratio:16/10;background:linear-gradient(135deg,var(--bf-purple-50),var(--bf-orange-50));display:grid;place-items:center;color:var(--bf-gray-500)}.bf-post__actions{display:flex;justify-content:space-around;border-top:1px solid var(--bf-gray-100);padding:8px}.bf-post__actions button{border:0;background:transparent;color:var(--bf-gray-600);padding:6px 10px;cursor:pointer}.bf-settings-group{display:grid;gap:10px}.bf-setting{display:flex;align-items:center;gap:12px;padding:16px;background:#fff;border:1px solid var(--bf-gray-100);border-radius:18px}.bf-setting__icon{width:44px;height:44px;border-radius:14px;display:grid;place-items:center;background:var(--bf-purple-50);color:var(--bf-purple-600)}.bf-setting__body{flex:1}.bf-setting__body b{display:block}.bf-setting__body small{color:var(--bf-gray-500)}.bf-channel-pills{display:flex;gap:8px;flex-wrap:wrap}.bf-check-pill{position:relative}.bf-check-pill input{position:absolute;opacity:0}.bf-check-pill span{display:inline-flex;align-items:center;gap:5px;padding:7px 10px;border:1px solid var(--bf-gray-200);border-radius:999px;color:var(--bf-gray-600);font-size:.75rem;cursor:pointer}.bf-check-pill input:checked+span{background:var(--bf-purple-50);border-color:var(--bf-purple-200);color:var(--bf-purple-600);font-weight:800}.bf-alert{margin-bottom:14px;padding:12px 14px;border-radius:14px;background:#ecf9f4;color:var(--bf-success);font-size:.84rem;font-weight:700}.bf-login{min-height:calc(100vh - 75px);display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;padding:44px 0 80px}.bf-login__visual{padding:36px}.bf-login__visual h1{margin:0;font-size:clamp(2rem,5vw,3.4rem);line-height:1.25}.bf-login__visual p{color:var(--bf-gray-600);max-width:550px}.bf-login__art{margin-top:30px;min-height:260px;border-radius:30px;background:linear-gradient(145deg,var(--bf-purple-500),#9c84ec);position:relative;overflow:hidden;box-shadow:var(--bf-shadow-float)}.bf-login__art:before,.bf-login__art:after{content:"";position:absolute;border-radius:50%;background:rgba(255,255,255,.12)}.bf-login__art:before{width:260px;height:260px;left:-90px;top:-70px}.bf-login__art:after{width:210px;height:210px;right:-60px;bottom:-90px}.bf-login__art-content{position:absolute;inset:0;display:grid;place-items:center;text-align:center;color:#fff;padding:35px}.bf-login__art-icon{width:84px;height:84px;display:grid;place-items:center;border-radius:28px;background:rgba(255,255,255,.18);backdrop-filter:blur(10px)}.bf-login__art-icon svg{width:44px;height:44px}.bf-login-card{padding:30px;background:#fff;border:1px solid var(--bf-gray-100);border-radius:30px;box-shadow:var(--bf-shadow)}.bf-login-card h2{margin:0}.bf-field{display:grid;gap:7px;margin-top:17px}.bf-field label{font-size:.84rem;font-weight:800}.bf-input{width:100%;min-height:50px;border:1px solid var(--bf-gray-200);border-radius:14px;padding:0 14px;outline:0;background:var(--bf-gray-25)}.bf-input:focus{border-color:var(--bf-purple-500);background:#fff;box-shadow:0 0 0 4px rgba(115,87,217,.10)}.bf-demo-box{margin-top:16px;padding:13px;background:var(--bf-gray-50);border-radius:14px;color:var(--bf-gray-600);font-size:.75rem}.bf-bottom-nav{display:none}.bf-mobile-only{display:none}
@media(max-width:980px){.bf-layout{grid-template-columns:210px minmax(0,1fr)}.bf-grid--4{grid-template-columns:repeat(2,1fr)}.bf-hero{grid-template-columns:1fr}.bf-hero__side{grid-template-columns:1fr 1fr}.bf-login{grid-template-columns:1fr}.bf-login__visual{display:none}}
@media(max-width:760px){body{background:var(--bf-gray-50);padding-bottom:82px}.bf-shell{width:min(100% - 20px,620px)}.bf-topbar__inner{height:64px}.bf-brand small,.bf-profile-chip>div{display:none}.bf-profile-chip{padding:4px;border:0;background:transparent}.bf-layout{display:block;padding:14px 0 30px}.bf-sidebar{display:none}.bf-page-head{align-items:center;margin-bottom:15px}.bf-page-head h1{font-size:1.35rem}.bf-page-head p{font-size:.78rem}.bf-page-tools{display:none}.bf-grid--4,.bf-grid--3,.bf-grid--2{grid-template-columns:1fr 1fr;gap:10px}.bf-card{border-radius:20px;padding:15px}.bf-stat{min-height:112px}.bf-stat strong{font-size:1.45rem}.bf-hero__main{min-height:185px;padding:20px;border-radius:22px}.bf-hero__main h2{font-size:1.28rem}.bf-hero__side{grid-template-columns:1fr 1fr;gap:9px}.bf-quick{padding:12px;display:grid;text-align:center;gap:6px}.bf-quick__icon{margin:auto}.bf-quick small{display:none}.bf-list-item{padding:12px}.bf-list-item__avatar{width:44px;height:44px;flex-basis:44px}.bf-chat-shell{position:relative;border-radius:0;border-left:0;border-right:0;margin-inline:-10px;box-shadow:none;grid-template-rows:auto minmax(calc(100vh - 208px),1fr) auto}.bf-chat-body{padding:14px}.bf-message__bubble{max-width:86%}.bf-chat-head{padding:12px}.bf-composer{position:sticky;bottom:78px;z-index:12}.bf-marathon-card{grid-template-columns:auto 1fr;padding:14px}.bf-marathon-card>.bf-button{grid-column:1/-1}.bf-feed{gap:10px}.bf-post{border-radius:18px}.bf-setting{align-items:flex-start;flex-wrap:wrap}.bf-channel-pills{width:100%;padding-right:56px}.bf-login{padding:20px 0}.bf-login-card{border-radius:24px;padding:22px}.bf-bottom-nav{position:fixed;display:grid;grid-template-columns:repeat(5,1fr);z-index:60;left:10px;right:10px;bottom:10px;height:66px;padding:6px;background:rgba(255,255,255,.94);border:1px solid rgba(235,229,255,.95);border-radius:22px;box-shadow:0 16px 45px rgba(54,40,95,.17);backdrop-filter:blur(16px)}.bf-bottom-nav a{display:grid;place-items:center;align-content:center;gap:2px;color:var(--bf-gray-500);font-size:.62rem;border-radius:16px}.bf-bottom-nav a.is-active{background:var(--bf-purple-50);color:var(--bf-purple-600);font-weight:800}.bf-bottom-nav svg{width:21px;height:21px}.bf-mobile-only{display:block}}
@media(max-width:420px){.bf-grid--4,.bf-grid--3{grid-template-columns:1fr 1fr}.bf-stat{padding:13px}.bf-stat small{font-size:.7rem}.bf-hero__side{grid-template-columns:1fr}.bf-channel-pills{padding-right:0}.bf-brand{font-size:.9rem}.bf-topbar__actions .bf-icon-btn{display:none}}