:root{--gt-blue:#1a73e8;--gt-blue-hover:#1557b0;--gt-blue-light:#e8f0fe;--gt-bg:#f8f9fa;--gt-card-bg:#fff;--gt-border:#dadce0;--gt-text:#3c4043;--gt-text-dark:#202124;--gt-text-light:#5f6368;--gt-hover-bg:#3c404314;--gt-header-border:#e0e0e0;--gt-placeholder:#70757a;--font-family:"Roboto", "Google Sans", Arial, sans-serif;--shadow-card:0 1px 3px 0 #3c40434d, 0 4px 8px 3px #3c404326;--transition:all .2s ease}body.dark-theme{--gt-blue:#8ab4f8;--gt-blue-hover:#aecbfa;--gt-blue-light:#8ab4f826;--gt-bg:#202124;--gt-card-bg:#303134;--gt-border:#5f6368;--gt-text:#e8eaed;--gt-text-dark:#fff;--gt-text-light:#9aa0a6;--gt-hover-bg:#e8eaed14;--gt-header-border:#3c4043;--gt-placeholder:#9aa0a6;--shadow-card:0 1px 2px 0 #0000004d, 0 2px 6px 2px #00000026}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-family);background-color:var(--gt-bg);color:var(--gt-text);min-height:100vh;transition:background-color var(--transition), color var(--transition);flex-direction:column;display:flex}button{cursor:pointer;color:inherit;background:0 0;border:none;justify-content:center;align-items:center;font-family:inherit;display:inline-flex}button:focus,button:focus-visible{outline:none}.gt-header{border-bottom:1px solid var(--gt-header-border);background-color:var(--gt-card-bg);justify-content:space-between;align-items:center;height:64px;padding:0 16px;display:flex}.header-left{align-items:center;gap:16px;display:flex}.btn-menu{width:48px;height:48px;color:var(--gt-text-light);border-radius:50%}.btn-menu:hover{background-color:var(--gt-hover-bg)}.logo{align-items:center;gap:8px;display:flex}.logo-text{color:var(--gt-text-light);align-items:center;gap:6px;font-family:Google Sans,sans-serif;font-size:22px;display:flex}.logo-brand{color:var(--gt-text-dark);font-weight:500}.logo-custom{color:var(--gt-blue);background-color:var(--gt-blue-light);border-radius:4px;padding:2px 8px;font-size:13px;font-weight:700}.header-right{align-items:center;gap:8px;display:flex}.btn-header-icon{width:40px;height:40px;color:var(--gt-text-light);border-radius:50%}.btn-header-icon:hover{background-color:var(--gt-hover-bg);color:var(--gt-text-dark)}.gt-nav-tabs{border-bottom:1px solid var(--gt-header-border);background-color:var(--gt-card-bg)}.tabs-container{gap:8px;max-width:1280px;margin:0 auto;padding:0 16px;display:flex}.nav-tab{height:48px;color:var(--gt-text-light);transition:var(--transition);border-bottom:3px solid #0000;gap:8px;padding:0 16px;font-size:14px;font-weight:500}.nav-tab:hover:not(.disabled){background-color:var(--gt-hover-bg);color:var(--gt-text-dark)}.nav-tab.active{color:var(--gt-blue);border-bottom-color:var(--gt-blue)}.nav-tab.disabled{opacity:.38;cursor:not-allowed}.gt-container{flex-direction:column;gap:20px;width:100%;max-width:1280px;margin:0 auto;padding:24px 16px;display:flex}.gt-card{background-color:var(--gt-card-bg);border:1px solid var(--gt-border);border-radius:8px;flex-direction:column;display:flex;overflow:hidden;box-shadow:0 1px 2px #3c40434d}.gt-card-header{border-bottom:1px solid var(--gt-border);grid-template-columns:1fr auto 1fr;align-items:center;height:48px;padding:0 8px;display:grid}.left-lang-tabs{align-items:center;display:flex}.right-lang-tabs{justify-content:flex-end;align-items:center;display:flex}.lang-tab{height:48px;color:var(--gt-text-light);text-transform:uppercase;letter-spacing:.5px;border-bottom:3px solid #0000;padding:0 16px;font-size:14px;font-weight:500}.lang-tab:hover{color:var(--gt-text-dark)}.lang-tab.active{color:var(--gt-blue);border-bottom-color:var(--gt-blue)}.lang-tab-arrow{width:36px;height:36px;color:var(--gt-text-light);border-radius:50%}.lang-tab-arrow:hover{background-color:var(--gt-hover-bg)}.btn-swap-google{width:40px;height:40px;color:var(--gt-text-light);border-radius:50%;flex-shrink:0;margin:0 8px;transform:rotate(90deg)}.btn-swap-google:hover{background-color:var(--gt-hover-bg);color:var(--gt-text-dark)}.gt-card-body{grid-template-columns:1fr 1fr;min-height:180px;display:grid}.gt-panel{flex-direction:column;min-height:180px;padding:16px;display:flex;position:relative}.source-panel{border-right:1px solid var(--gt-border)}.target-panel{background-color:var(--gt-bg)}.textarea-wrapper,.output-wrapper{flex-direction:column;flex-grow:1;display:flex;position:relative}textarea{width:100%;height:auto;min-height:120px;color:var(--gt-text-dark);resize:none;background:0 0;border:none;outline:none;font-family:inherit;font-size:20px;line-height:1.4;overflow:hidden}textarea::placeholder{color:var(--gt-placeholder)}.placeholder-text{color:var(--gt-placeholder);font-size:20px}.result-text{color:var(--gt-text-dark);white-space:pre-wrap;word-break:break-word;height:auto;min-height:120px;font-size:20px;line-height:1.4;overflow:hidden}.result-text.hidden,.placeholder-text.hidden{display:none!important}.panel-bottom{justify-content:space-between;align-items:center;height:36px;margin-top:12px;display:flex}.bottom-tools{gap:4px;display:flex}.btn-tool{width:36px;height:36px;color:var(--gt-text-light);border-radius:50%}.btn-tool:hover{background-color:var(--gt-hover-bg);color:var(--gt-text-dark)}.btn-clear{width:36px;height:36px;color:var(--gt-text-light);border-radius:50%;position:absolute;top:0;right:0}.btn-clear:hover{background-color:var(--gt-hover-bg)}.btn-clear.hidden{display:none!important}.char-counter{color:var(--gt-text-light);font-size:12px}.translation-info{color:var(--gt-text-light);font-size:11px}.loading-overlay{background-color:var(--gt-border);height:4px;position:absolute;top:-16px;left:-16px;right:-16px;overflow:hidden}.loading-overlay.hidden{display:none!important}.loading-bar{background-color:var(--gt-blue);width:40%;height:100%;animation:1.2s ease-in-out infinite loading-slide}.modal-backdrop{z-index:1000;background-color:#0009;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.modal-backdrop.hidden{display:none!important}.google-dialog{background-color:var(--gt-card-bg);border:1px solid var(--gt-border);width:90%;max-width:400px;box-shadow:var(--shadow-card);border-radius:8px;flex-direction:column;display:flex}.dialog-header{justify-content:space-between;align-items:center;padding:16px 24px;display:flex}.dialog-header h3{font-size:18px;font-weight:500}.btn-dialog-close{width:36px;height:36px;color:var(--gt-text-light);border-radius:50%}.btn-dialog-close:hover{background-color:var(--gt-hover-bg)}.dialog-body{flex-direction:column;gap:16px;padding:0 24px 24px;display:flex}.dialog-row{flex-direction:column;gap:6px;display:flex}.dialog-row label{color:var(--gt-text-light);font-size:12px;font-weight:500}.dialog-row input,.dialog-row select{border:1px solid var(--gt-border);color:var(--gt-text-dark);background-color:#0000;border-radius:4px;padding:8px 12px;font-family:inherit;font-size:14px}.dialog-row input:focus,.dialog-row select:focus{outline:2px solid var(--gt-blue);border-color:#0000}.helper-link{color:var(--gt-blue);font-size:11px;text-decoration:none}.helper-link:hover{text-decoration:underline}.dialog-footer{border-top:1px solid var(--gt-border);justify-content:flex-end;padding:12px 24px;display:flex}.btn-dialog-save{background-color:var(--gt-blue);color:#fff;border-radius:4px;padding:8px 24px;font-size:14px;font-weight:500;box-shadow:0 1px 2px #3c40434d}.btn-dialog-save:hover{background-color:var(--gt-blue-hover)}.toast{color:#fff;z-index:10000;background-color:#323232;border-radius:4px;padding:14px 24px;font-size:14px;position:fixed;bottom:24px;left:24px;box-shadow:0 3px 5px -1px #0003,0 6px 10px #00000024,0 1px 18px #0000001f}.toast.hidden{display:none!important}@keyframes loading-slide{0%{transform:translate(-100%)}50%{width:60%;transform:translate(120%)}to{width:30%;transform:translate(250%)}}@media (width<=768px){.gt-card-body{grid-template-columns:1fr}.source-panel{border-right:none;border-bottom:1px solid var(--gt-border)}.history-item{grid-template-columns:1fr;gap:8px}.btn-swap-google{transform:rotate(0)}.btn-swap-google:hover{transform:rotate(180deg)}}.ad-slot-wrapper{opacity:1;flex-direction:column;gap:4px;width:100%;max-width:1280px;margin:0 auto;transition:opacity .3s,transform .3s;display:flex}.ad-slot-wrapper.hidden{display:none!important}.ad-slot-wrapper.fade-out{opacity:0;transform:scale(.98)}.ad-header-row{justify-content:space-between;align-items:center;padding:0 4px;display:flex}.ad-sponsored-label{color:var(--gt-text-light);letter-spacing:.8px;text-transform:uppercase;font-size:11px;font-weight:500}.ad-close-btn{width:20px;height:20px;color:var(--gt-text-light);transition:var(--transition);border-radius:50%;justify-content:center;align-items:center;font-size:16px;line-height:1;display:inline-flex}.ad-close-btn:hover{background-color:var(--gt-hover-bg);color:var(--gt-text-dark)}.ad-container{aspect-ratio:3.333;background-color:var(--gt-card-bg);border:1px solid var(--gt-border);border-radius:8px;width:100%;transition:transform .2s,box-shadow .2s;position:relative;overflow:hidden;box-shadow:0 1px 2px #3c404326}.ad-link{width:100%;height:100%;display:block}.ad-image{object-fit:cover;opacity:1;width:100%;height:100%;transition:opacity .4s ease-in-out;display:block}.ad-image.fade-out{opacity:0}