:root{--bg-color:#f5f5f7;--accent-color:#0071e3;--accent-hover:#0077ed;--text-main:#1d1d1f;--text-sub:#86868b;--border-color:#e5e5ea;--card-bg:rgba(255, 255, 255, 0.85);--radius-lg:24px;--radius-md:12px;--radius-sm:8px;--shadow-apple:0 1px 3px rgba(0,0,0,0.01),0 20px 40px rgba(0,0,0,0.05)}.ambient-glow{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:800px;height:800px;border-radius:50%;background:radial-gradient(circle,rgba(0,113,227,.08) 0,transparent 70%);z-index:1;pointer-events:none;filter:blur(100px)}.design-grid-overlay{position:absolute;inset:0;background-image:radial-gradient(rgba(0,0,0,.02) 1px,transparent 1px);background-size:20px 20px;opacity:.8;pointer-events:none;z-index:1}.auth-container{width:100%;max-width:440px;margin:20px;padding:44px 40px;background:var(--card-bg);backdrop-filter:blur(30px);-webkit-backdrop-filter:blur(30px);border:1px solid rgba(255,255,255,.7);box-shadow:var(--shadow-apple);border-radius:var(--radius-lg);z-index:10;position:relative;transition:all .4s cubic-bezier(.16,1,.3,1)}.macos-window-dots{position:absolute;top:22px;left:24px;display:flex;gap:6px}.window-dot{width:8px;height:8px;border-radius:50%;display:inline-block}.window-dot.close{background:#ff5f56}.window-dot.minimize{background:#ffbd2e}.window-dot.zoom{background:#27c93f}.back-to-store{position:absolute;top:18px;right:24px;font-size:12.5px;font-weight:500;color:var(--accent-color);background:0 0;border:none;cursor:pointer;text-decoration:none;transition:opacity .2s;display:flex;align-items:center;gap:4px}.back-to-store:hover{opacity:.8}.auth-header{text-align:center;margin-bottom:32px;margin-top:10px}.brand-icon{width:56px;height:56px;background:linear-gradient(135deg,#00c6ff,#0072ff);border-radius:14px;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:28px;margin:0 auto 16px auto;box-shadow:0 8px 20px rgba(0,114,255,.25)}.auth-title{font-size:24px;font-weight:800;letter-spacing:-.6px;color:var(--text-main);margin-bottom:6px}.auth-subtitle{font-size:13.5px;color:var(--text-sub);line-height:1.4}.segmented-control-container{background:rgba(0,0,0,.04);border-radius:10px;padding:2.5px;display:flex;position:relative;margin-bottom:30px;-webkit-user-select:none;-moz-user-select:none;user-select:none}.segmented-button{flex:1;background:0 0;border:none;padding:7px 0;font-size:13px;font-weight:600;color:var(--text-sub);cursor:pointer;z-index:2;text-align:center;transition:color .2s ease;outline:0;text-decoration:none}.segmented-button.active{color:var(--text-main)}.segmented-slider{position:absolute;top:2.5px;left:2.5px;bottom:2.5px;width:calc(50% - 2.5px);background:#fff;border-radius:8px;box-shadow:0 2px 6px rgba(0,0,0,.06),0 0 1px rgba(0,0,0,.06);z-index:1;transition:transform .25s cubic-bezier(.25,1,.5,1)}.form-scroller{position:relative;overflow:hidden;width:100%}.form-track{display:flex;width:200%;transition:transform .3s cubic-bezier(.25,1,.5,1)}.auth-form-page{width:50%;display:flex;flex-direction:column;gap:16px;transition:opacity .2s ease}.register-form{opacity:0;pointer-events:none}.lostpwd-form{width:100%}.input-group{display:flex;flex-direction:column;gap:6px;position:relative}.input-label{font-size:11px;font-weight:700;color:var(--text-sub);text-transform:uppercase;letter-spacing:.5px}.input-wrapper{position:relative;display:flex;align-items:center}.input-wrapper input{width:100%;background:#fff;border:1px solid #d2d2d7;padding:12px 16px;border-radius:10px;font-size:14.5px;color:var(--text-main);outline:0;transition:all .2s ease}.input-wrapper input:focus{border-color:var(--accent-color);box-shadow:0 0 0 3px rgba(0,113,227,.15)}.toggle-password{position:absolute;right:14px;background:0 0;border:none;color:var(--text-sub);font-size:12px;font-weight:500;cursor:pointer;outline:0}.toggle-password:hover{color:var(--text-main)}.password-strength{font-size:11px;color:var(--text-sub);display:flex;align-items:center;gap:4px;margin-top:2px}.strength-dot{width:6px;height:6px;border-radius:50%;background:#d2d2d7}.strength-text{font-weight:500}.form-helper-row{display:flex;justify-content:space-between;align-items:center;font-size:13px}.remember-me{display:flex;align-items:center;gap:6px;cursor:pointer;color:#515154;-webkit-user-select:none;-moz-user-select:none;user-select:none}.remember-me input{accent-color:var(--accent-color);width:14px;height:14px}.forgot-password{color:var(--accent-color);text-decoration:none;font-weight:500}.forgot-password:hover{text-decoration:underline}.submit-btn{background:var(--accent-color);color:#fff;border:none;border-radius:10px;padding:13px 0;font-size:15px;font-weight:600;cursor:pointer;transition:background .2s,transform .1s;margin-top:10px;display:flex;align-items:center;justify-content:center;gap:8px;outline:0}.submit-btn:hover{background:var(--accent-hover)}.submit-btn:active{transform:scale(.985)}.spinner{width:16px;height:16px;border:2px solid rgba(255,255,255,.3);border-top:2px solid #fff;border-radius:50%;animation:spin .8s linear infinite;display:none}@keyframes spin{100%{transform:rotate(360deg)}}.terms-text{font-size:11px;color:var(--text-sub);text-align:center;line-height:1.5;padding:0 10px;margin-top:24px}.terms-text a{color:var(--accent-color);text-decoration:none}.terms-text a:hover{text-decoration:underline}.auth-modal-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,.2);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);z-index:3000;display:flex;align-items:center;justify-content:center;opacity:0;pointer-events:none;transition:opacity .3s cubic-bezier(.25,1,.5,1)}.auth-modal-overlay.active{opacity:1;pointer-events:auto}.auth-modal-card{width:440px;max-height:90vh;overflow-y:auto;background:var(--card-bg);backdrop-filter:blur(30px);-webkit-backdrop-filter:blur(30px);border:1px solid rgba(255,255,255,.7);box-shadow:var(--shadow-apple);border-radius:var(--radius-lg);padding:44px 40px;position:relative;transform:scale(.95) translateY(10px);transition:transform .3s cubic-bezier(.25,1,.5,1)}.auth-modal-overlay.active .auth-modal-card{transform:scale(1) translateY(0)}.auth-modal-close{position:absolute;top:16px;right:16px;width:28px;height:28px;border-radius:50%;background:rgba(0,0,0,.05);border:none;font-size:14px;color:var(--text-sub);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s}.auth-modal-close:hover{background:rgba(0,0,0,.1);color:var(--text-main)}@keyframes shake{0%,100%{transform:translateX(0)}20%{transform:translateX(-8px)}40%{transform:translateX(8px)}60%{transform:translateX(-5px)}80%{transform:translateX(5px)}}@media (max-width:480px){.auth-container,.auth-modal-card{padding:36px 24px;margin:16px}}