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fadeInUp{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@media(max-width:640px){.app-layout{padding:.75rem}.app-header{flex-direction:column;align-items:stretch;padding:.85rem;gap:.75rem}.header-left,.header-stats,.header-right{justify-content:space-between}.choice-grid{grid-template-columns:1fr}.track-reveal-body{flex-direction:column;text-align:center}.track-actions{flex-direction:column;width:100%}.next-track-btn,.apple-music-listen-btn{width:100%;justify-content:center}.summary-actions{flex-direction:column}}.gate-container{position:fixed;top:0;right:0;bottom:0;left:0;z-index:9000;display:flex;align-items:center;justify-content:center;overflow:hidden;padding:2rem}.gate-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:radial-gradient(ellipse at 30% 20%,rgba(250,45,72,.12) 0%,transparent 50%),radial-gradient(ellipse at 70% 80%,rgba(120,50,255,.08) 0%,transparent 50%),radial-gradient(ellipse at 50% 50%,#0a0a12,#0a0a0f);z-index:0}.gate-content{position:relative;z-index:1;display:flex;flex-direction:column;align-items:center;text-align:center;max-width:420px;width:100%;background:#12121cb3;backdrop-filter:blur(40px);-webkit-backdrop-filter:blur(40px);border:1px solid rgba(255,255,255,.08);border-radius:28px;padding:3rem 2.5rem;box-shadow:0 0 80px #fa2d4814,0 25px 60px #00000080;animation:gate-entrance .8s cubic-bezier(.16,1,.3,1) forwards}@keyframes gate-entrance{0%{opacity:0;transform:translateY(30px) scale(.96)}to{opacity:1;transform:translateY(0) scale(1)}}.gate-logo{position:relative;width:100px;height:100px;display:flex;align-items:center;justify-content:center;margin-bottom:1.75rem}.gate-logo-ring{position:absolute;top:0;right:0;bottom:0;left:0;border-radius:50%;border:2px solid transparent;border-top-color:var(--apple-red);border-right-color:var(--apple-pink);animation:gate-ring-spin 3s linear infinite}.gate-logo-ring-inner{position:absolute;top:6px;right:6px;bottom:6px;left:6px;border-radius:50%;border:1.5px solid transparent;border-bottom-color:#fa2d4866;border-left-color:#ff72894d;animation:gate-ring-spin 2s linear infinite reverse}@keyframes gate-ring-spin{to{transform:rotate(360deg)}}.gate-logo-icon{color:var(--apple-red);filter:drop-shadow(0 0 12px rgba(250,45,72,.4))}.gate-title{font-family:var(--font-display);font-size:2.4rem;font-weight:900;background:linear-gradient(135deg,#fff,#e0e0e0,#fa2d48);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;letter-spacing:-.02em;line-height:1.1;margin-bottom:.35rem}.gate-subtitle{font-size:.85rem;font-weight:600;color:var(--text-secondary);letter-spacing:.04em;text-transform:uppercase;margin-bottom:1.25rem}.gate-desc{font-size:.9rem;color:var(--text-secondary);line-height:1.6;margin-bottom:2rem}.gate-action{width:100%;margin-bottom:1.5rem}.gate-login-btn{width:100%;display:flex;align-items:center;justify-content:center;gap:.6rem;background:linear-gradient(135deg,var(--apple-red) 0%,#e0224a 100%);color:#fff;border:none;padding:.9rem 1.5rem;border-radius:14px;font-size:1rem;font-weight:700;font-family:var(--font-family);cursor:pointer;transition:all .25s ease;box-shadow:0 4px 20px #fa2d4859}.gate-login-btn:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 6px 30px #fa2d4880}.gate-login-btn:active:not(:disabled){transform:translateY(0)}.gate-login-btn:disabled{opacity:.7;cursor:not-allowed}.gate-btn-icon{flex-shrink:0}.gate-loading,.gate-unavailable{display:flex;align-items:center;justify-content:center;gap:.6rem;padding:.9rem 1.5rem;border-radius:14px;font-size:.88rem;font-weight:600;color:var(--text-secondary);background:#ffffff0d;border:1px solid var(--border-glass)}.gate-spinner{animation:gate-spin 1s linear infinite;flex-shrink:0}@keyframes gate-spin{to{transform:rotate(360deg)}}.gate-error{display:flex;align-items:center;gap:.5rem;background:#ff453a1f;border:1px solid rgba(255,69,58,.3);color:#ff8580;padding:.6rem 1rem;border-radius:10px;font-size:.8rem;margin-bottom:1rem;text-align:left}.gate-footer{font-size:.72rem;color:var(--text-muted);line-height:1.6}@media(max-width:480px){.gate-content{padding:2.5rem 1.75rem;border-radius:22px}.gate-title{font-size:2rem}.gate-logo{width:80px;height:80px}.gate-logo-icon{width:36px;height:36px}}