*,:before,:after{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-base);background:var(--color-bg);color:var(--color-text);min-height:100vh;display:flex;overflow-x:hidden}.auth-grid{grid-template-columns:1.15fr .85fr;width:100vw;min-height:100vh;display:grid}.auth-art-panel{background:var(--color-media-bg);flex-direction:column;justify-content:flex-end;padding:56px;display:flex;position:relative;overflow:hidden}.auth-art-overlay{background:linear-gradient(180deg, color-mix(in srgb, var(--color-media-bg) 10%, transparent) 0%, color-mix(in srgb, var(--color-media-bg) 65%, transparent) 60%, color-mix(in srgb, var(--color-media-bg) 92%, transparent) 100%);z-index:1;position:absolute;inset:0}.auth-art-content{z-index:2;max-width:480px;position:relative}.art-badge{background:color-mix(in srgb, var(--color-on-accent) 8%, transparent);-webkit-backdrop-filter:blur(12px)saturate(180%);border:1px solid color-mix(in srgb, var(--color-on-accent) 12%, transparent);color:color-mix(in srgb, var(--color-on-accent) 90%, transparent);box-shadow:0 4px 16px color-mix(in srgb, var(--color-media-bg) 20%, transparent);border-radius:99px;align-items:center;gap:8px;margin-bottom:24px;padding:6px 14px 6px 8px;font-size:.75rem;font-weight:600;display:inline-flex}.art-badge img{object-fit:cover;border-radius:50%;width:24px;height:24px}.art-quote{font-family:var(--font-display);color:var(--color-on-accent);letter-spacing:-.8px;margin-bottom:12px;font-size:clamp(24px,2.5vw,32px);font-weight:700;line-height:1.28}.art-sub{color:color-mix(in srgb, var(--color-on-accent) 68%, transparent);font-size:.90625rem;line-height:1.6}.auth-form-panel{background:var(--color-bg);flex-direction:column;padding:32px;display:flex;position:relative;overflow-y:auto}.auth-header{justify-content:space-between;align-items:center;margin-bottom:48px;display:flex}.auth-logo{color:var(--color-text);align-items:center;gap:10px;text-decoration:none;display:flex}.logo-img{width:36px;height:36px;color:var(--color-primary);transition:color var(--transition), transform var(--transition);flex-shrink:0}.logo-img:hover{transform:scale(1.04)}.logo-text{font-family:var(--font-brand);letter-spacing:0;text-transform:uppercase;color:var(--color-text);font-size:1.375rem;font-weight:700}.theme-btn{border:1px solid var(--color-border);width:38px;height:38px;color:var(--color-text-secondary);cursor:pointer;transition:background var(--transition), color var(--transition), transform var(--transition);background:0 0;border-radius:50%;justify-content:center;align-items:center;display:flex}.theme-btn:hover{background:var(--color-surface-hover);color:var(--color-text);transform:scale(1.04)}.theme-btn svg{width:18px;height:18px}.theme-icon-sun{display:none}.theme-icon-moon,[data-theme=dark] .theme-icon-sun{display:block}[data-theme=dark] .theme-icon-moon{display:none}.auth-body{flex:1;justify-content:center;align-items:center;width:100%;display:flex}.auth-card{flex-direction:column;width:100%;max-width:400px;display:flex}.auth-tabs{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);gap:4px;margin-bottom:28px;padding:4px;display:flex}.auth-tab{border-radius:var(--radius-full);font-family:var(--font-base);color:var(--color-text-secondary);cursor:pointer;transition:background var(--transition), color var(--transition), box-shadow var(--transition);background:0 0;border:none;flex:1;padding:10px;font-size:.84375rem;font-weight:600}.auth-tab.active{background:var(--color-bg);color:var(--color-text);box-shadow:var(--shadow-sm)}.oauth-group{flex-direction:column;gap:10px;margin-bottom:24px;display:flex}.oauth-btn{border-radius:var(--radius-full);background:var(--color-primary);width:100%;color:var(--logo-fg);font-family:var(--font-base);cursor:pointer;transition:opacity var(--transition), transform var(--transition);border:none;align-items:center;gap:12px;padding:12px 16px;font-size:.84375rem;font-weight:600;text-decoration:none;display:flex}.oauth-btn:hover{opacity:.88}.oauth-btn:active{transform:scale(.98)}.oauth-icon{flex-shrink:0;justify-content:center;align-items:center;width:20px;height:20px;display:flex}.oauth-label{text-align:left;flex:1}.oauth-arrow{color:currentColor;transition:transform var(--transition)}.oauth-btn:hover .oauth-arrow{transform:translate(2px)}.auth-divider{color:var(--color-text-tertiary);align-items:center;gap:12px;margin-bottom:24px;font-size:.75rem;font-weight:500;display:flex}.auth-divider:before,.auth-divider:after{content:"";background:var(--color-border);flex:1;height:1px}.field-row{grid-template-columns:1fr 1fr;gap:12px;display:grid}.field{margin-bottom:16px;position:relative}.field-label{color:var(--color-text-muted);margin-bottom:6px;font-size:.78125rem;font-weight:600;display:block}.field-input-wrap{position:relative}.field-input{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);width:100%;height:44px;font-family:var(--font-base);color:var(--color-text);transition:border-color var(--transition), box-shadow var(--transition);outline:none;padding:0 14px;font-size:.875rem}.field-input::placeholder{color:var(--color-text-tertiary)}.field-input:focus{border-color:var(--color-primary);box-shadow:0 0 0 3px var(--color-primary-bg);background:var(--color-bg)}.field-input.has-icon{padding-right:44px}.field-icon-btn{color:var(--color-text-tertiary);cursor:pointer;border-radius:var(--radius-sm);transition:color var(--transition), background var(--transition);background:0 0;border:none;justify-content:center;align-items:center;padding:6px;display:flex;position:absolute;top:50%;right:12px;transform:translateY(-50%)}.field-icon-btn:hover{color:var(--color-text-muted);background:var(--color-surface-hover)}.field-icon-btn svg{width:16px;height:16px}.password-strength{background:var(--color-border);border-radius:99px;height:4px;margin-top:6px;overflow:hidden}.strength-fill{border-radius:99px;width:0%;height:100%;transition:width .3s,background .3s}.strength-label{color:var(--color-text-tertiary);min-height:14px;margin-top:4px;font-size:.6875rem;font-weight:500}.field-error-message{color:var(--color-danger);margin-top:5px;font-size:.71875rem;font-weight:500}.field-input.error-state{border-color:var(--color-danger);box-shadow:0 0 0 3px var(--color-danger-bg)}.forgot-row{justify-content:flex-end;margin-top:-6px;margin-bottom:20px;display:flex}.forgot-link{color:var(--color-text-secondary);transition:color var(--transition);cursor:pointer;font-size:.78125rem;font-weight:500;text-decoration:none}.forgot-link:hover{color:var(--color-primary);text-decoration:underline}.btn-submit{border-radius:var(--radius-full);background:var(--color-primary);width:100%;height:46px;color:var(--logo-fg);font-family:var(--font-base);cursor:pointer;transition:opacity var(--transition), transform var(--transition);letter-spacing:.2px;border:none;justify-content:center;align-items:center;gap:8px;margin-bottom:16px;font-size:.875rem;font-weight:700;display:flex}.btn-submit:hover{opacity:.88}.btn-submit:active{transform:scale(.98)}.btn-submit svg{width:16px;height:16px}.auth-terms{color:var(--color-text-tertiary);text-align:center;font-size:.71875rem;line-height:1.5}.auth-terms a{color:var(--color-text-secondary);text-decoration:none}.auth-terms a:hover{text-decoration:underline}.auth-view{display:none}.auth-view.active{animation:.3s fade-in;display:block}@keyframes fade-in{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}.back-btn{color:var(--color-text-secondary);font-family:var(--font-base);cursor:pointer;transition:color var(--transition);background:0 0;border:none;align-items:center;gap:6px;margin-bottom:20px;padding:0;font-size:.8125rem;font-weight:500;display:inline-flex}.back-btn:hover{color:var(--color-primary)}.back-btn svg{width:14px;height:14px}.auth-heading{font-family:var(--font-display);letter-spacing:-.5px;color:var(--color-text);margin-bottom:6px;font-size:1.5rem;font-weight:700}.auth-sub{color:var(--color-text-secondary);margin-bottom:24px;font-size:.84375rem;line-height:1.5}.success-box{background:var(--color-success);color:var(--color-on-accent);border-radius:var(--radius-lg);box-shadow:0 4px 12px color-mix(in srgb, var(--color-success) 15%, transparent);align-items:flex-start;gap:12px;margin-bottom:24px;padding:16px;display:flex}.success-icon{background:color-mix(in srgb, var(--color-on-accent) 20%, transparent);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:24px;height:24px;display:flex}.success-text{font-size:.8125rem;line-height:1.5}.success-text strong{font-weight:700}.alert-error{background:var(--color-danger-bg);border:1px solid var(--color-danger);color:var(--color-danger);border-radius:var(--radius-md);margin-bottom:20px;padding:12px 16px;font-size:.8125rem;font-weight:500}@media (width<=900px){.auth-grid{grid-template-columns:1fr}.auth-art-panel{display:none}.auth-form-panel{justify-content:flex-start;padding:24px 20px}.auth-header{margin-bottom:32px}}.oauth-btn{text-decoration:none}.view-off,#form-register{display:none}#form-register .btn-submit{margin-top:1.125rem}#view-forgot .btn-submit{margin-top:.5rem}.auth-captcha{margin-top:var(--space-4)}