*{margin:0;padding:0;box-sizing:border-box}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC',sans-serif;background:#f0f2f5;color:#333;min-height:100vh;-webkit-tap-highlight-color:transparent}

/* ===== NAV ===== */
.nav{display:flex;background:#fff;border-bottom:1px solid #eee;position:sticky;top:0;z-index:99}
.tab{flex:1;display:flex;flex-direction:row;align-items:center;justify-content:center;padding:8px 0;cursor:pointer;color:#999;font-size:12px;font-weight:500;border-bottom:2px solid transparent;transition:all .2s;user-select:none}
.tab.active{color:#667eea;border-bottom-color:#667eea}

/* ===== CONTENT ===== */
#tab-content{padding:12px;padding-bottom:80px}
.section-title{font-size:14px;font-weight:700;color:#333;padding:14px 0 10px;border-bottom:2px solid #f0f0f0;margin-bottom:10px}

/* ===== HOME ACTIONS ===== */
.home-actions{display:flex;gap:10px;margin-bottom:16px}
.home-actions .act-btn{flex:1;display:flex;align-items:center;justify-content:center;gap:8px;padding:18px 16px;border:none;border-radius:14px;color:#fff;font-size:16px;font-weight:600;cursor:pointer;transition:all .15s;box-shadow:0 4px 12px rgba(0,0,0,.1)}
.home-actions .act-btn:active{transform:scale(.96);opacity:.9}
.act-btn-upload{background:linear-gradient(135deg,#667eea,#764ba2)}
.act-btn-download{background:linear-gradient(135deg,#f39c12,#e74c3c)}
.act-btn .act-icon{font-size:24px;line-height:1}

/* ===== CARDS ===== */
.card{background:#fff;border-radius:12px;padding:12px;margin-bottom:8px;box-shadow:0 1px 3px rgba(0,0,0,.05);cursor:pointer;transition:transform .12s,box-shadow .12s;display:flex;align-items:center;border:1px solid #f5f5f5}
.card:hover{box-shadow:0 2px 8px rgba(0,0,0,.08)}
.card:active{transform:scale(.98)}
.apk-icon{width:44px;height:44px;border-radius:10px;overflow:hidden;flex-shrink:0;background:#f0f2f5;display:flex;align-items:center;justify-content:center}
.apk-icon img{width:100%;height:100%;object-fit:cover}
.apk-info{flex:1;min-width:0;margin-left:10px}
.apk-name{font-size:14px;font-weight:600;color:#222;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.apk-meta{font-size:11px;color:#999;margin-top:2px}
.apk-meta b{color:#667eea;font-weight:600}

/* ===== BUTTONS ===== */
.btn{display:block;width:100%;padding:13px;border:none;border-radius:10px;font-size:15px;font-weight:600;cursor:pointer;transition:all .15s;text-align:center}
.btn:active{transform:scale(.97);opacity:.85}
.btn-primary{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;box-shadow:0 4px 14px rgba(102,126,234,.3)}
.btn-secondary{background:#fff;color:#667eea;border:1.5px solid #667eea}
.btn-red{background:linear-gradient(135deg,#e74c3c,#c0392b);color:#fff}
.btn-sm{padding:6px 14px;font-size:12px;border-radius:6px;width:auto;display:inline-block}

/* ===== LOGIN BOX ===== */
.login-box{max-width:360px;margin:24px auto;padding:28px 24px;background:#fff;border-radius:16px;box-shadow:0 4px 20px rgba(0,0,0,.06)}
.login-box h3{text-align:center;font-size:18px;color:#333;margin-bottom:20px}

/* ===== FORM ===== */
.form-group{margin-bottom:14px}
.form-group label{display:block;font-size:12px;color:#888;margin-bottom:5px;font-weight:500;text-transform:uppercase;letter-spacing:.5px}
.form-group input{width:100%;padding:11px 14px;border:1.5px solid #e8e8e8;border-radius:10px;font-size:14px;outline:none;transition:border .2s,box-shadow .2s;background:#fafafa}
.form-group input:focus{border-color:#667eea;box-shadow:0 0 0 3px rgba(102,126,234,.1);background:#fff}

/* ===== USER HEADER ===== */
.user-header{display:flex;align-items:center;padding:14px;background:#fff;border-radius:14px;margin-bottom:12px;box-shadow:0 1px 4px rgba(0,0,0,.05)}
.user-avatar{width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;display:flex;align-items:center;justify-content:center;font-size:22px;font-weight:700;margin-right:12px;flex-shrink:0}

/* ===== GRID BUTTONS ===== */
.grid2-row{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:8px 0}
.grid-btn{display:flex;align-items:center;justify-content:center;gap:6px;padding:12px 10px;border-radius:12px;cursor:pointer;font-size:13px;font-weight:600;background:#fff;box-shadow:0 1px 3px rgba(0,0,0,.04);border:1px solid #f0f0f0;transition:all .15s;user-select:none}
.grid-btn:active{transform:scale(.96);box-shadow:0 0 0 rgba(0,0,0,0)}
.grid-btn .btn-icon{font-size:16px}

/* ===== LEVEL BADGE ===== */
.level-badge{border-radius:14px;padding:14px;margin:10px 0;text-align:center;cursor:pointer;transition:transform .15s;box-shadow:0 3px 12px rgba(0,0,0,.12)}
.level-badge:active{transform:scale(.97)}

/* ===== MODAL ===== */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:200;display:flex;align-items:flex-end;justify-content:center;animation:fadeIn .2s}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
.modal{background:#fff;border-radius:18px 18px 0 0;padding:22px;width:100%;max-width:450px;max-height:78vh;overflow-y:auto}
.modal .close{float:right;font-size:26px;color:#bbb;cursor:pointer;line-height:.8}
.modal h3{font-size:17px;color:#333;margin-bottom:14px}

/* ===== EMPTY/LOADING ===== */
.empty{text-align:center;padding:60px 20px}
.empty .eicon{font-size:52px;margin-bottom:10px}
.empty p{color:#bbb;font-size:14px}
.loading{text-align:center;padding:30px;color:#999;font-size:13px}

/* ===== PROGRESS BAR ===== */
.progress-bar{background:#eee;border-radius:10px;overflow:hidden;height:22px;margin:8px 0}
.progress-fill{height:100%;background:linear-gradient(90deg,#667eea,#764ba2);text-align:center;color:#fff;font-size:11px;line-height:22px;transition:width .3s;min-width:40px}

/* ===== SMALL BUTTONS ===== */
.btn-sm{border:1px solid #d9d9d9;background:#fff;padding:4px 10px;border-radius:5px;font-size:11px;cursor:pointer}
.btn-del{background:#ff4d4f;color:#fff;border:none;padding:4px 10px;border-radius:5px;font-size:11px;cursor:pointer;margin-left:4px}
.btn-toggle{background:#faad14;color:#fff;border:none;padding:4px 10px;border-radius:5px;font-size:11px;cursor:pointer}
.btn-limit{background:#1890ff;color:#fff;border:none;padding:4px 10px;border-radius:5px;font-size:11px;cursor:pointer;margin-left:4px}

/* ===== SEARCH ===== */
.search-box{display:flex;gap:8px;margin-bottom:12px}
.search-box input{flex:1;padding:10px 14px;border:1.5px solid #e8e8e8;border-radius:10px;font-size:14px;outline:none;transition:border .2s}
.search-box input:focus{border-color:#667eea}

/* ===== INFO BOX ===== */
.info-box{background:#f6ffed;border:1px solid #b7eb8f;border-radius:10px;padding:10px;margin:8px 0;font-size:11px;color:#555;line-height:1.8}
.tab .nav-icon{font-size:18px;display:inline;margin-right:3px;vertical-align:middle}

.btn-copy-card{background:#667eea;color:#fff;border:none;padding:5px 10px;border-radius:5px;font-size:11px;cursor:pointer;white-space:nowrap}
.btn-copy-card:active{opacity:.8}

/* ===== Enhanced Action Buttons ===== */
.act-btn-upload{background:linear-gradient(135deg,#4facfe,#00f2fe)}
.act-btn-download{background:linear-gradient(135deg,#fa709a,#fee140)}
.act-btn .act-icon{font-size:26px}
.act-btn{text-shadow:0 1px 2px rgba(0,0,0,.15)}

/* ===== Better tab icons ===== */
.tab{flex-direction:column;padding:6px 0 3px}
.tab::before{font-size:20px;line-height:1;margin-bottom:1px}
.tab[data-tab="home"]::before{content:"\1F3E0"}
.tab[data-tab="rank"]::before{content:"\1F3C6"}
.tab[data-tab="latest"]::before{content:"\1F195"}
.tab[data-tab="private"]::before{content:"\1F451"}
.tab[data-tab="my"]::before{content:"\1F464"}

/* ===== Card enhancements ===== */
.code-text{color:#667eea;font-weight:700;letter-spacing:1px}
.btn-copy-card{background:#667eea;color:#fff;border:none;padding:6px 12px;border-radius:6px;font-size:12px;cursor:pointer;font-weight:600}
.btn-copy-card:active{opacity:.8}

/* ===== Toast upgrade ===== */
#toast{font-size:14px;font-weight:500;box-shadow:0 4px 16px rgba(0,0,0,.2)}

/* ===== Loading state ===== */
.loading{text-align:center;padding:40px;color:#999;font-size:14px}
.loading::before{content:"\23F3";display:block;font-size:32px;margin-bottom:8px;animation:pulse 1s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.3}}

/* ===== Level badge ===== */
.level-badge{cursor:pointer;transition:transform .15s}
.level-badge:active{transform:scale(.97)}