@import"https://fonts.googleapis.com/css2?family=Syne:wght@400;600;700;800&family=DM+Sans:wght@300;400;500&display=swap";:root{--bg: #070b14;--bg2: #0d1220;--bg3: #131929;--card: #111827;--card2: #1a2235;--border: rgba(255,255,255,.07);--border2: rgba(255,255,255,.12);--text: #f0f4ff;--text2: #8892a4;--text3: #4d5a6e;--accent: #4f8ef7;--accent2: #7c3aed;--gold: #f59e0b;--gold2: #fbbf24;--green: #10b981;--red: #ef4444;--font-head: "Syne", sans-serif;--font-body: "DM Sans", sans-serif;--r: 16px;--r2: 12px;--r3: 8px;--shadow: 0 4px 24px rgba(0,0,0,.4);--shadow2: 0 8px 40px rgba(0,0,0,.5)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px}body{background:var(--bg);color:var(--text);font-family:var(--font-body);font-weight:400;min-height:100vh;overflow-x:hidden}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--bg3);border-radius:3px}body:before{content:"";position:fixed;inset:0;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 512 512' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");opacity:.04;pointer-events:none;z-index:9999}@keyframes fadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes toastIn{0%{opacity:0;transform:scale(.95) translateY(20px)}to{opacity:1;transform:scale(1) translateY(0)}}@keyframes float{0%,to{transform:translateY(0) scale(1)}50%{transform:translateY(-20px) scale(1.05)}}@keyframes fillBar{0%{width:0}}.page-anim{animation:fadeIn .3s ease}#app{display:flex;min-height:100vh}#sidebar{width:240px;min-height:100vh;background:var(--bg2);border-right:1px solid transparent;border-image:linear-gradient(to bottom,transparent,rgba(79,142,247,.3),transparent) 1;display:flex;flex-direction:column;position:fixed;top:0;left:0;bottom:0;z-index:100}.sidebar-logo{padding:24px 20px 16px;display:flex;align-items:center;gap:10px}.logo-icon{width:36px;height:36px;background:linear-gradient(135deg,var(--accent),var(--accent2));border-radius:10px;display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:18px}.logo-text{font-family:var(--font-head);font-size:18px;font-weight:700;letter-spacing:-.3px}.logo-text span{color:var(--accent)}.sidebar-nav{flex:1;padding:8px 12px;overflow-y:auto}.nav-group-label{font-size:10px;font-weight:500;text-transform:uppercase;letter-spacing:1px;color:var(--text3);padding:12px 8px 6px}.nav-item{display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:var(--r3);cursor:pointer;color:var(--text2);font-size:14px;font-weight:400;transition:all .15s;-webkit-user-select:none;user-select:none}.nav-item:hover{background:var(--bg3);color:var(--text)}.nav-item.active{background:#4f8ef71f;color:var(--accent)}.nav-badge{margin-left:auto;background:#f59e0b26;color:var(--gold);border:1px solid rgba(245,158,11,.25);border-radius:20px;font-size:10px;font-weight:500;padding:2px 7px}.sidebar-footer{padding:12px;border-top:1px solid var(--border)}.user-chip{display:flex;align-items:center;gap:10px;padding:10px;border-radius:var(--r2);cursor:pointer;transition:background .15s;margin-bottom:8px}.user-chip:hover{background:var(--bg3)}.user-chip-info{flex:1;min-width:0}.user-chip-name{font-size:13px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.user-chip-coins{font-size:11px;color:var(--gold)}.logout-btn{display:flex;align-items:center;gap:8px;padding:9px 10px;border-radius:var(--r3);cursor:pointer;color:var(--text2);font-size:13px;font-weight:400;transition:all .15s;width:100%;background:none;border:none;font-family:var(--font-body)}.logout-btn:hover{background:#ef44441a;color:var(--red)}#main{margin-left:240px;flex:1;min-height:100vh;padding:32px}.page-header{margin-bottom:28px}.page-title{font-family:var(--font-head);font-size:26px;font-weight:700;letter-spacing:-.5px}.page-subtitle{color:var(--text2);font-size:14px;margin-top:4px}#auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden;background:var(--bg)}.auth-blob{position:absolute;border-radius:50%;filter:blur(80px);opacity:.35;pointer-events:none}.auth-blob-1{width:400px;height:400px;background:radial-gradient(circle,#4f8ef7,#7c3aed);top:-100px;right:-50px;animation:float 7s ease-in-out infinite}.auth-blob-2{width:300px;height:300px;background:radial-gradient(circle,#7c3aed,#10b981);bottom:-80px;left:-60px;animation:float 9s ease-in-out infinite reverse}.auth-card{background:var(--card);border:1px solid var(--border2);border-radius:24px;box-shadow:var(--shadow2);width:420px;padding:40px;position:relative;z-index:1;animation:fadeIn .4s ease}.auth-logo{text-align:center;margin-bottom:8px}.auth-logo-icon{width:48px;height:48px;background:linear-gradient(135deg,var(--accent),var(--accent2));border-radius:14px;display:inline-flex;align-items:center;justify-content:center;margin-bottom:12px;font-size:22px}.auth-title{font-family:var(--font-head);font-size:28px;font-weight:800;text-align:center;letter-spacing:-.5px}.auth-title span{color:var(--accent)}.auth-subtitle{text-align:center;color:var(--text2);font-size:13px;margin-bottom:28px;margin-top:4px}.auth-tabs{display:flex;background:var(--bg3);border-radius:var(--r3);padding:3px;margin-bottom:24px}.auth-tab{flex:1;text-align:center;padding:8px;border-radius:6px;cursor:pointer;font-size:13px;font-weight:500;color:var(--text2);transition:all .15s}.auth-tab.active{background:var(--card2);color:var(--text);box-shadow:0 1px 4px #0000004d}.auth-error{background:#ef44441a;border:1px solid rgba(239,68,68,.25);border-radius:var(--r3);color:var(--red);font-size:13px;padding:10px 14px;margin-bottom:16px}.form-group{margin-bottom:16px}.form-label{display:block;font-size:12px;font-weight:500;color:var(--text2);margin-bottom:6px;letter-spacing:.3px}.form-input,.form-select,.form-textarea{width:100%;background:var(--bg3);border:1px solid var(--border2);border-radius:var(--r3);color:var(--text);font-family:var(--font-body);font-size:14px;padding:10px 14px;outline:none;transition:border-color .15s;-webkit-appearance:none}.form-input:focus,.form-select:focus,.form-textarea:focus{border-color:var(--accent)}.form-select{cursor:pointer;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238892a4' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;padding-right:36px;background-color:var(--bg3)}.form-select option{background:var(--bg3);color:var(--text)}.form-textarea{resize:vertical;min-height:80px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 20px;border-radius:var(--r3);font-family:var(--font-body);font-size:14px;font-weight:500;cursor:pointer;border:none;transition:all .15s;text-decoration:none}.btn-primary{background:var(--accent);color:#fff;width:100%}.btn-primary:hover{background:#3a7ef5;transform:translateY(-1px)}.btn-secondary{background:var(--bg3);color:var(--text);border:1px solid var(--border2)}.btn-secondary:hover{background:var(--card2)}.btn-danger{background:#ef444426;color:var(--red);border:1px solid rgba(239,68,68,.25)}.btn-danger:hover{background:#ef444440}.btn-green{background:#10b98126;color:var(--green);border:1px solid rgba(16,185,129,.25)}.btn-green:hover{background:#10b98140}.btn-sm{padding:6px 12px;font-size:12px}.card{background:var(--card);border:1px solid var(--border);border-radius:var(--r);padding:20px;transition:transform .2s,border-color .2s}.card:hover{transform:translateY(-2px);border-color:var(--border2)}.stats-row{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:28px}.stat-card{background:var(--card);border:1px solid var(--border);border-radius:var(--r2);padding:20px;transition:transform .2s,border-color .2s}.stat-card:hover{transform:translateY(-2px);border-color:var(--border2)}.stat-icon{width:40px;height:40px;border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:14px;font-size:18px}.stat-value{font-family:var(--font-head);font-size:28px;font-weight:700;line-height:1;margin-bottom:4px}.stat-label{color:var(--text2);font-size:13px;margin-bottom:6px}.stat-delta{color:var(--green);font-size:12px}.daily-reward-banner{background:linear-gradient(135deg,#f59e0b26,#fbbf2414);border:1px solid rgba(245,158,11,.3);border-radius:var(--r);padding:20px 24px;display:flex;align-items:center;justify-content:space-between;margin-bottom:28px;cursor:pointer;transition:all .2s}.daily-reward-banner:hover{border-color:#f59e0b80;transform:translateY(-1px)}.daily-reward-banner.claimed{opacity:.5;cursor:default;pointer-events:none}.bonus-banner{background:linear-gradient(135deg,#4f8ef71a,#7c3aed12);border:1px solid rgba(79,142,247,.25);border-radius:var(--r);padding:18px 24px 16px;margin-bottom:24px}.bonus-banner-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.bonus-banner-left{display:flex;align-items:center;gap:14px}.bonus-banner-icon{font-size:28px;line-height:1;flex-shrink:0}.bonus-banner-title{font-family:var(--font-head);font-size:15px;font-weight:700;color:var(--accent);margin-bottom:3px}.bonus-banner-sub{font-size:13px;color:var(--text2);line-height:1.4}.bonus-banner-count{font-family:var(--font-head);font-size:15px;font-weight:700;color:var(--gold);flex-shrink:0}.bonus-progress-track{width:100%;height:4px;background:#ffffff12;border-radius:99px;overflow:hidden}.bonus-progress-fill{height:100%;background:linear-gradient(90deg,var(--accent),#7c3aed);border-radius:99px;transition:width .4s ease;min-width:0}.daily-reward-title{font-family:var(--font-head);font-size:16px;font-weight:700;color:var(--gold);margin-bottom:2px}.daily-reward-sub{color:var(--text2);font-size:13px}.section-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.section-title{font-family:var(--font-head);font-size:16px;font-weight:700}.section-link{font-size:13px;color:var(--accent);cursor:pointer}.section-link:hover{text-decoration:underline}.trending-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:32px}.trending-card{background:var(--card);border:1px solid var(--border);border-radius:var(--r2);padding:16px;transition:all .2s;position:relative}.trending-card:hover{transform:translateY(-2px);border-color:var(--border2)}.trending-rank{position:absolute;top:14px;right:14px;font-family:var(--font-head);font-size:22px;font-weight:800}.trending-title{font-family:var(--font-head);font-size:14px;font-weight:600;margin-bottom:4px;margin-right:30px}.trending-sub{font-size:12px;color:var(--text2);margin-bottom:10px}.trending-footer{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--text2)}.materials-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px}.material-card{background:var(--card);border:1px solid var(--border);border-radius:var(--r2);padding:18px;transition:all .2s;position:relative;display:flex;flex-direction:column;gap:12px}.material-card:hover{transform:translateY(-3px);border-color:var(--border2)}.material-card.unlocked{border-color:#10b98133}.material-card-header{display:flex;align-items:flex-start;gap:12px}.file-icon{width:44px;height:44px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0}.material-title{font-family:var(--font-head);font-size:14px;font-weight:600;line-height:1.3;margin-bottom:3px}.material-meta{font-size:12px;color:var(--text2)}.material-desc{font-size:13px;color:var(--text2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.material-tags{display:flex;flex-wrap:wrap;gap:6px}.tag{font-size:11px;padding:3px 8px;border-radius:20px;font-weight:500}.tag-grade{background:#4f8ef71f;color:var(--accent)}.material-footer{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-top:auto}.material-stats{display:flex;align-items:center;gap:12px;font-size:12px;color:var(--text2)}.material-stat-item{display:flex;align-items:center;gap:3px}.material-thumb{position:relative;border-radius:10px;overflow:hidden;height:130px;background:var(--bg2)}.material-thumb-img{width:100%;height:100%;object-fit:cover;display:block}.material-thumb-lock{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:#00000073;font-size:26px;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px)}.material-thumb-banner{border-radius:10px;border:1px solid;height:72px;display:flex;align-items:center;justify-content:center;gap:10px}.like-btn{display:flex;align-items:center;gap:4px;font-size:12px;background:transparent;border:1px solid var(--border);border-radius:20px;padding:3px 10px;color:var(--text2);cursor:pointer;transition:all .18s;font-family:var(--font)}.like-btn:hover:not(:disabled){border-color:#f472b6;color:#f472b6;background:#f472b614}.like-btn.liked{border-color:#f472b6;color:#f472b6;background:#f472b61a}.like-btn:disabled{opacity:.55;cursor:default}.hot-badge{position:absolute;top:12px;right:12px;background:#ef444426;border:1px solid rgba(239,68,68,.3);color:var(--red);font-size:10px;font-weight:600;padding:2px 8px;border-radius:20px;letter-spacing:.5px}.search-bar{position:relative;margin-bottom:16px}.search-icon{position:absolute;left:14px;top:50%;transform:translateY(-50%);pointer-events:none;font-size:16px}.search-bar input{width:100%;background:var(--card);border:1px solid var(--border2);border-radius:var(--r2);color:var(--text);font-family:var(--font-body);font-size:14px;padding:12px 14px 12px 42px;outline:none;transition:border-color .15s}.search-bar input:focus{border-color:var(--accent)}.filter-chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px}.chip{padding:6px 14px;border-radius:20px;border:1px solid var(--border2);background:var(--card);color:var(--text2);font-size:13px;cursor:pointer;transition:all .15s;font-family:var(--font-body)}.chip:hover{border-color:var(--accent);color:var(--accent)}.chip.active{background:#4f8ef71f;border-color:var(--accent);color:var(--accent)}.empty-state{text-align:center;padding:60px 20px;color:var(--text2)}.empty-state-emoji{font-size:48px;margin-bottom:16px}.empty-state-title{font-family:var(--font-head);font-size:18px;font-weight:600;color:var(--text);margin-bottom:6px}.upload-zone{border:2px dashed var(--border2);border-radius:var(--r);padding:48px 24px;text-align:center;cursor:pointer;transition:all .2s;margin-bottom:24px;background:var(--card)}.upload-zone:hover,.upload-zone.drag-over{border-color:var(--accent);background:#4f8ef70d}.upload-zone-icon{font-size:40px;margin-bottom:12px}.upload-zone-title{font-family:var(--font-head);font-size:16px;font-weight:600;margin-bottom:4px}.upload-zone-sub{font-size:13px;color:var(--text2)}.upload-form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:24px}.upload-form-grid .full{grid-column:1 / -1}.coin-preview{background:linear-gradient(135deg,#f59e0b1f,#fbbf240f);border:1px solid rgba(245,158,11,.25);border-radius:var(--r2);padding:16px 20px;display:flex;align-items:center;gap:16px;margin-bottom:20px}.coin-preview-main{font-family:var(--font-head);font-size:20px;font-weight:700;color:var(--gold)}.coin-preview-sub{font-size:12px;color:var(--text2)}.upload-layout{display:grid;grid-template-columns:1fr 280px;gap:24px;align-items:start}.upload-main{display:flex;flex-direction:column}.upload-submit-btn{width:100%;margin-top:4px}.upload-sidebar{display:flex;flex-direction:column;gap:14px}.upload-reward-card{background:linear-gradient(135deg,#f59e0b2e,#b464001f);border:1px solid rgba(245,158,11,.35);border-radius:var(--r);padding:20px 18px;display:flex;align-items:center;gap:16px}.upload-reward-icon{font-size:36px;line-height:1}.upload-reward-amount{font-family:var(--font-head);font-size:22px;font-weight:800;color:var(--gold);line-height:1.1}.upload-reward-label{font-size:12px;color:var(--text2);margin-top:3px}.upload-info-card{background:var(--card);border:1px solid var(--border);border-radius:var(--r);padding:16px 18px;display:flex;flex-direction:column;gap:12px}.upload-info-row{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text2)}.upload-info-row strong{color:var(--text1);font-weight:600}.upload-info-icon{font-size:16px;flex-shrink:0;width:22px;text-align:center}.podium{display:flex;align-items:flex-end;justify-content:center;gap:12px;margin-bottom:32px}.podium-item{display:flex;flex-direction:column;align-items:center;gap:8px}.podium-avatar-wrap{position:relative}.podium-rank-badge{position:absolute;bottom:-6px;right:-6px;width:22px;height:22px;border-radius:50%;font-size:10px;font-weight:700;display:flex;align-items:center;justify-content:center}.podium-name{font-family:var(--font-head);font-size:13px;font-weight:600;text-align:center}.podium-coins{font-size:12px;color:var(--gold)}.podium-bar{border-radius:var(--r3) var(--r3) 0 0;display:flex;align-items:flex-start;justify-content:center;padding-top:12px;font-family:var(--font-head);font-size:20px;font-weight:800}.podium-1 .podium-bar,.podium-bar.cl-0{background:linear-gradient(180deg,#f59e0b4d,#f59e0b0d);border:1px solid rgba(245,158,11,.4);height:100px;width:100px}.podium-2 .podium-bar,.podium-bar.cl-1{background:linear-gradient(180deg,#94a3b833,#94a3b80d);border:1px solid rgba(148,163,184,.3);height:75px;width:90px}.podium-3 .podium-bar,.podium-bar.cl-2{background:linear-gradient(180deg,#d9770633,#d977060d);border:1px solid rgba(217,119,6,.3);height:60px;width:90px}.leaderboard-list{display:flex;flex-direction:column;gap:10px}.lb-item{background:var(--card);border:1px solid var(--border);border-radius:var(--r2);padding:14px 18px;display:flex;align-items:center;gap:14px;transition:all .2s}.lb-item:hover{transform:translate(4px);border-color:var(--border2)}.lb-item.top3{border-color:#f59e0b33}.lb-rank{font-family:var(--font-head);font-size:18px;font-weight:800;min-width:32px;text-align:center}.lb-info{flex:1}.lb-name{font-family:var(--font-head);font-size:14px;font-weight:600;margin-bottom:2px}.lb-meta{font-size:12px;color:var(--text2)}.lb-coins{font-family:var(--font-head);font-size:16px;font-weight:700;color:var(--gold)}.profile-hero{background:linear-gradient(135deg,#4f8ef733,#7c3aed26);border:1px solid var(--border2);border-radius:var(--r);padding:32px;display:flex;align-items:center;gap:24px;margin-bottom:24px}.profile-name{font-family:var(--font-head);font-size:22px;font-weight:700;margin-bottom:4px}.profile-grade{color:var(--text2);font-size:14px;margin-bottom:12px}.profile-badges{display:flex;gap:10px;flex-wrap:wrap}.badge{display:flex;align-items:center;gap:5px;padding:5px 12px;border-radius:20px;font-size:13px;font-weight:500}.badge-gold{background:#f59e0b26;border:1px solid rgba(245,158,11,.3);color:var(--gold)}.badge-blue{background:#4f8ef71f;border:1px solid rgba(79,142,247,.25);color:var(--accent)}.profile-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:16px}.profile-stat-item{text-align:center}.profile-stat-val{font-family:var(--font-head);font-size:22px;font-weight:700}.profile-stat-lab{font-size:12px;color:var(--text2)}.rep-bar-label{display:flex;justify-content:space-between;font-size:13px;color:var(--text2);margin-bottom:8px}.rep-bar-track{height:8px;background:var(--bg3);border-radius:4px;overflow:hidden}.rep-bar-fill{height:100%;background:linear-gradient(to right,var(--accent),var(--accent2));border-radius:4px;animation:fillBar .8s ease}.achievements-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:24px}.ach-card{background:var(--card);border:1px solid var(--border);border-radius:var(--r2);padding:16px;text-align:center;transition:all .2s}.ach-card:hover{border-color:var(--border2)}.ach-card.locked{opacity:.4;filter:grayscale(.8)}.ach-card.unlocked{border-color:#f59e0b4d}.ach-emoji{font-size:28px;margin-bottom:8px}.ach-name{font-family:var(--font-head);font-size:12px;font-weight:600;margin-bottom:4px}.ach-desc{font-size:11px;color:var(--text2)}.profile-settings{background:var(--card);border:1px solid var(--border);border-radius:var(--r);padding:24px;margin-bottom:20px}.settings-title{font-family:var(--font-head);font-size:15px;font-weight:700;margin-bottom:16px;padding-bottom:12px;border-bottom:1px solid var(--border)}.settings-row{display:flex;gap:12px;align-items:center}.admin-tabs{display:flex;gap:4px;background:var(--card);border:1px solid var(--border);border-radius:var(--r2);padding:4px;margin-bottom:24px;flex-wrap:wrap}.admin-tab{padding:8px 16px;border-radius:var(--r3);cursor:pointer;font-size:13px;font-weight:500;color:var(--text2);transition:all .15s}.admin-tab.active{background:var(--bg3);color:var(--text)}.admin-tab:hover:not(.active){color:var(--text)}.admin-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:24px}.admin-stat{background:var(--card2);border:1px solid var(--border);border-radius:var(--r2);padding:20px}.admin-stat-label{font-size:12px;color:var(--text2);margin-bottom:8px}.admin-stat-value{font-family:var(--font-head);font-size:28px;font-weight:700}.admin-table{width:100%;border-collapse:collapse}.admin-table th{text-align:left;font-size:11px;font-weight:500;text-transform:uppercase;letter-spacing:.5px;color:var(--text3);padding:10px 12px;border-bottom:1px solid var(--border)}.admin-table td{padding:12px;font-size:13px;border-bottom:1px solid var(--border);vertical-align:middle}.admin-table tr:last-child td{border-bottom:none}.admin-table tr:hover td{background:#ffffff05}.admin-price-input{background:var(--bg3);border:1px solid var(--border2);border-radius:var(--r3);color:var(--text);font-family:var(--font-body);font-size:13px;padding:5px 10px;width:70px;outline:none}.admin-price-input:focus{border-color:var(--accent)}.subjects-list{display:flex;flex-direction:column;gap:8px}.subject-item{display:flex;align-items:center;gap:12px;background:var(--card2);border:1px solid var(--border);border-radius:var(--r3);padding:10px 14px}.subject-item-name{flex:1;font-size:14px}.subject-item-count{font-size:12px;color:var(--text2)}.add-subject-row{display:flex;gap:10px;margin-bottom:16px;align-items:center}.add-subject-row input{flex:1 1 0;min-width:0}.add-subject-row button{flex:0 0 auto;width:auto}.doc-section{background:var(--card);border:1px solid var(--border);border-radius:var(--r);padding:28px;margin-bottom:20px}.doc-h1{font-family:var(--font-head);font-size:22px;font-weight:800;margin-bottom:8px;color:var(--accent)}.doc-h2{font-family:var(--font-head);font-size:16px;font-weight:700;margin:20px 0 10px}.doc-p{font-size:14px;color:var(--text2);line-height:1.7;margin-bottom:10px}.doc-table{width:100%;border-collapse:collapse;margin:12px 0;font-size:13px}.doc-table th{background:var(--bg3);padding:8px 12px;text-align:left;color:var(--text2);font-weight:500;font-size:12px}.doc-table td{padding:8px 12px;border-bottom:1px solid var(--border);color:var(--text2)}.modal-overlay{position:fixed;inset:0;background:#000000b3;display:flex;align-items:center;justify-content:center;z-index:1000;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);animation:fadeIn .15s ease}.modal-card{background:var(--card);border:1px solid var(--border2);border-radius:var(--r);padding:32px;width:400px;max-width:90vw;box-shadow:var(--shadow2)}.modal-title{font-family:var(--font-head);font-size:18px;font-weight:700;margin-bottom:8px}.modal-desc{font-size:14px;color:var(--text2);margin-bottom:24px;line-height:1.6}.modal-actions{display:flex;gap:10px}.modal-actions .btn{flex:1}#toast-container{position:fixed;bottom:24px;right:24px;z-index:9000;display:flex;flex-direction:column;gap:10px}.toast{background:var(--card2);border:1px solid var(--border2);border-radius:var(--r2);padding:14px 18px;font-size:14px;box-shadow:var(--shadow2);animation:toastIn .3s ease;max-width:300px;display:flex;align-items:center;gap:10px}.toast.success{border-color:#10b98166}.toast.error{border-color:#ef444466}.toast.info{border-color:#4f8ef766}.toast-icon{font-size:18px;flex-shrink:0}.avatar{border-radius:50%;display:flex;align-items:center;justify-content:center;font-family:var(--font-head);font-weight:700;flex-shrink:0;text-transform:uppercase}.avatar-sm{width:32px;height:32px;font-size:12px}.avatar-md{width:40px;height:40px;font-size:15px}.avatar-lg{width:56px;height:56px;font-size:20px}.avatar-xl{width:80px;height:80px;font-size:28px}.coin-history-list{display:flex;flex-direction:column;gap:8px}.coin-history-item{display:flex;align-items:center;gap:12px;padding:12px 16px;background:var(--card2);border-radius:var(--r3)}.coin-history-icon{font-size:20px}.coin-history-name{flex:1;font-size:13px}.coin-history-date{font-size:11px;color:var(--text3)}.coin-amount{font-family:var(--font-head);font-size:14px;font-weight:700}.coin-amount.plus{color:var(--green)}.coin-amount.minus{color:var(--red)}.report-item{display:flex;align-items:center;gap:12px;padding:12px 16px;background:var(--card2);border-radius:var(--r3);margin-bottom:8px}.report-type{font-size:10px;font-weight:600;padding:3px 8px;border-radius:20px;background:#ef44441f;color:var(--red);border:1px solid rgba(239,68,68,.2);flex-shrink:0}.report-text{flex:1;font-size:13px;color:var(--text2)}@media(max-width:900px){#sidebar{transform:translate(-100%)}#main{margin-left:0;padding:20px 16px}.stats-row{grid-template-columns:repeat(2,1fr)}.trending-grid{grid-template-columns:1fr}.achievements-grid{grid-template-columns:repeat(2,1fr)}.admin-stats{grid-template-columns:1fr 1fr}.upload-form-grid{grid-template-columns:1fr}.upload-form-grid .full{grid-column:1}.upload-layout{grid-template-columns:1fr}}@media(max-width:600px){.stats-row{grid-template-columns:1fr 1fr}.auth-card{padding:28px 20px}.profile-hero{flex-direction:column;text-align:center}.profile-stats{grid-template-columns:repeat(2,1fr)}}