:root{--sidebar-width:280px;--primary-bg:#121212;--secondary-bg:#1e1e1e;--accent-color:#bb86fc;--text-main:#fff;--text-dim:#b3b3b3;--card-bg:#2a2a2a}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--primary-bg);color:var(--text-main);font-family:Quicksand,sans-serif;overflow:hidden}#root{height:100vh;display:flex}.app-container{width:100%;height:100%;display:flex}.sidebar{width:var(--sidebar-width);background-color:var(--secondary-bg);border-right:1px solid #333;flex-direction:column;padding:1rem 0;display:flex}.main-content{flex:1;min-height:0;padding:1rem 1rem 8rem;transition:background .5s;position:relative;overflow-y:auto}.theme-instructions{background:linear-gradient(135deg,#fce4ec 0%,#f8bbd0 100%)}.theme-ts{background:linear-gradient(135deg,#1a3a3a 0%,#7ed9f5 100%)}.theme-fearless-tv{background:linear-gradient(135deg,#4a3a1a 0%,#f5c542 100%)}.theme-speak-now-tv{background:linear-gradient(135deg,#2a1a3a 0%,#c292f5 100%)}.theme-red-tv{background:linear-gradient(135deg,#3a0a0a 0%,#a32020 100%)}.theme-1989-tv{background:linear-gradient(135deg,#1a2a3a 0%,#82c7f5 100%)}.theme-reputation{background:radial-gradient(circle,#2c2c2c 0%,#000 100%)}.theme-lover{background:linear-gradient(135deg,#f7afd3 0%,#90d5ec 100%)}.theme-folklore{background:linear-gradient(135deg,#2c2c2c 0%,#cfcfcf 100%)}.theme-evermore{background:linear-gradient(135deg,#3a2a1a 0%,#c99a6d 100%)}.theme-midnights{background:radial-gradient(circle at 100% 0,#0f172a 0%,#242b5c 100%)}.theme-ttpd{background:linear-gradient(135deg,#262626 0%,#dedede 100%)}.theme-showgirl{background:linear-gradient(135deg,#ff8c00 0%,#3cb371 100%)}.theme-overall{background:linear-gradient(135deg,#121212 0%,#1e1e1e 100%)}.album-item{cursor:pointer;border-left:4px solid #0000;align-items:center;gap:12px;padding:.75rem 1.5rem;transition:all .2s;display:flex}.album-item:hover{background-color:#333}.album-item.active{border-left-color:var(--album-color);background-color:#ffffff1a}.album-dot{background-color:var(--album-color);border-radius:50%;width:12px;height:12px}.album-info{flex-direction:column;display:flex}.album-name{font-size:.9rem;font-weight:600}.album-year{color:var(--text-dim);font-size:.75rem}.ranking-header{margin-bottom:2rem}.song-card{background-color:var(--secondary-color,#2a2a2ab3);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);touch-action:none;border:1px solid #ffffff0d;border-radius:6px;align-items:center;gap:.8rem;margin-bottom:.2rem;padding:.3rem .8rem;font-size:.9rem;transition:all .2s cubic-bezier(.4,0,.2,1);display:flex;box-shadow:0 1px 4px #0000001a}.song-card:hover{border-color:var(--album-color);background-color:#ffffff26;transform:translate(5px)}.rank-number{color:var(--album-color);text-shadow:0 2px 4px #0000004d;min-width:30px;font-size:1.1rem;font-weight:800}@media (width<=768px){.app-container{flex-direction:column}.sidebar{border-bottom:1px solid #333;border-right:none;flex-direction:column;width:100%;height:auto;padding:0;display:flex}.mobile-auth-header{background:var(--secondary-bg);z-index:1000;border-bottom:1px solid #333;align-items:center;gap:.5rem;padding:.5rem;display:flex;position:sticky;top:0;left:0;right:0}.save-btn-compact{width:auto!important;padding:.2rem .4rem!important;font-size:.7rem!important}.hide-on-mobile{display:none!important}.horizontal-tabs{white-space:nowrap;gap:.5rem;margin-top:0;padding:0 .5rem;display:flex;overflow-x:auto}.tab-item{cursor:pointer;background:var(--album-color);color:#000;border-bottom:3px solid #0000;border-radius:4px;padding:.5rem .8rem;font-size:.8rem;font-weight:600}.tab-item.active{border-bottom:3px solid #fff}}.merge-selection-area{flex-direction:column;height:100%;padding-right:.5rem;display:flex;overflow-y:auto}.current-ranking-panel{background-color:var(--secondary-bg);border:1px solid #333;border-radius:12px;flex-direction:column;height:100%;display:flex}.panel-header{border-bottom:1px solid #333;justify-content:space-between;align-items:center;padding:1rem;display:flex}.scroll-list{flex:1;padding:1rem;overflow-y:auto}.merge-grid-small{grid-template-columns:repeat(auto-fill,minmax(110px,1fr));align-content:start;gap:.75rem;width:100%;margin-top:1rem;display:grid}.merge-card-small{aspect-ratio:2.5;background-color:var(--album-color);text-align:center;cursor:pointer;color:#000;word-break:break-word;border-radius:6px;flex-direction:column;justify-content:center;align-items:center;padding:.2rem;font-size:.65rem;font-weight:700;line-height:1.1;transition:transform .1s,filter .1s;display:flex;box-shadow:0 2px 5px #0006}.merge-card-small:hover{filter:brightness(1.1);transform:translateY(-2px)}.small-rank-number{opacity:.7;margin-right:8px;font-size:.8rem;font-weight:700}.undo-btn{color:#fff;background:#444;padding:.4rem .8rem;font-size:.8rem}.undo-btn:disabled{opacity:.3;cursor:not-allowed}.btn{cursor:pointer;border:none;border-radius:99px;padding:.75rem 1.5rem;font-weight:600;transition:opacity .2s}.btn-primary{background-color:var(--accent-color);color:#000}.sidebar-footer{margin-top:auto;padding:1rem}.merge-btn{color:#000;background:linear-gradient(45deg,#f5c542,#bb86fc);width:100%;font-size:.9rem}.auth-modal-overlay{z-index:2000;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:#000c;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.auth-modal{background:var(--secondary-bg);border:1px solid #444;border-radius:16px;width:100%;max-width:400px;padding:2.5rem;box-shadow:0 10px 30px #00000080}.auth-form{flex-direction:column;gap:1rem;margin-top:1.5rem;display:flex}.auth-input{color:#fff;background:#2a2a2a;border:1px solid #444;border-radius:8px;padding:.8rem 1rem;font-size:1rem}.auth-tabs{border-bottom:1px solid #333;gap:1rem;margin-bottom:1rem;padding-bottom:.5rem;display:flex}.auth-tab{color:var(--text-dim);cursor:pointer;background:0 0;border:none;padding:.5rem 0;font-weight:600}.auth-tab.active{color:var(--accent-color);border-bottom:2px solid var(--accent-color)}.user-profile{align-items:center;gap:.8rem;margin-bottom:1rem;padding:.5rem 1.5rem;display:flex}.user-email{color:var(--text-dim);text-overflow:ellipsis;max-width:150px;font-size:.8rem;overflow:hidden}.logout-btn{color:#ff4d4d;cursor:pointer;background:0 0;border:1px solid #444;border-radius:4px;padding:.3rem .6rem;font-size:.7rem}.logout-btn:hover{background:#ff4d4d1a}