:root{--primary: #279038;--primary-hover: #1f762c;--primary-focus: rgba(39, 144, 56, .2);--bg-color: #f4fbf5;--container-bg: #ffffff;--text-main: #18241b;--text-muted: #647067;--border-color: #dbe4dc;--input-bg: #ffffff;--upload-bg: #f4f8f4;--upload-border: #c4d0c6;--upload-hover: #e6ede7;--preset-bg: #f4f8f4;--preset-text: #2f3b32;--preset-hover: #e6ede7;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .08), 0 2px 4px -1px rgba(0, 0, 0, .04)}body.dark-mode{--primary: #3db856;--primary-hover: #4dd067;--primary-focus: rgba(61, 184, 86, .2);--bg-color: #0b120d;--container-bg: #131c15;--text-main: #e2ebe4;--text-muted: #8b998f;--border-color: #2b3b30;--input-bg: #0b120d;--upload-bg: #0b120d;--upload-border: #2b3b30;--upload-hover: #1b291f;--preset-bg: #0b120d;--preset-text: #c0ccc3;--preset-hover: #1b291f;--shadow-md: 0 10px 15px -3px rgba(0, 0, 0, .5)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg-color);color:var(--text-main);min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px;transition:background-color .3s ease,color .3s ease}@media (prefers-reduced-motion: no-preference){::view-transition-old(root),::view-transition-new(root){animation-duration:.22s;animation-timing-function:ease}::view-transition-old(root){animation-name:locale-fade-out}::view-transition-new(root){animation-name:locale-fade-in}}@keyframes locale-fade-out{0%{opacity:1;filter:blur(0)}to{opacity:0;filter:blur(2px)}}@keyframes locale-fade-in{0%{opacity:0;filter:blur(2px)}to{opacity:1;filter:blur(0)}}.locale-toggle,.theme-toggle{position:fixed;top:20px;padding:8px 14px;background:var(--container-bg);color:var(--text-main);border:1px solid var(--border-color);border-radius:8px;cursor:pointer;font-size:14px;display:flex;align-items:center;gap:8px;transition:all .2s ease;z-index:1000;box-shadow:var(--shadow-sm)}.locale-toggle{left:20px}.theme-toggle{right:20px}.locale-toggle:hover,.theme-toggle:hover{background:var(--upload-hover);border-color:var(--text-muted)}.locale-icon{font-size:15px}.locale-current{font-weight:600}.container{background:var(--container-bg);border:1px solid var(--border-color);border-radius:12px;padding:24px 28px;max-width:600px;width:100%;box-shadow:var(--shadow-md);transition:all .3s ease}.header{text-align:center;margin-bottom:20px}h1{font-size:1.6rem;font-weight:700;margin-bottom:4px;color:var(--text-main)}.subtitle{color:var(--text-muted);font-size:.9rem}.upload-area{margin-bottom:20px}#videoInput{display:none}.upload-label{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:24px 16px;background:var(--upload-bg);border:2px dashed var(--upload-border);border-radius:10px;cursor:pointer;transition:all .2s ease;text-align:center;position:relative;overflow:hidden}.upload-label:before{content:"";position:absolute;top:0;left:0;width:100%;height:4px;background-color:var(--primary);opacity:0;transition:opacity .2s ease}.upload-label:hover{background:var(--upload-hover);border-color:var(--primary)}.upload-label:hover:before{opacity:1}.upload-icon{font-size:2.2rem;margin-bottom:8px;opacity:.8;color:var(--primary)}.upload-text{color:var(--text-main);font-weight:500;line-height:1.4;font-size:.95rem}.upload-text small{color:var(--text-muted);font-weight:400;font-size:.85em}.video-info{margin-bottom:20px;padding:12px;background:var(--upload-bg);border-radius:8px;border:1px solid var(--border-color);text-align:center}.file-name{font-weight:600;color:var(--text-main);word-break:break-all;margin:0;font-size:.95rem}.controls{margin-bottom:20px}.form-row{display:flex;gap:12px}.form-row .control-group{flex:1}@media (max-width: 480px){.form-row{flex-direction:column;gap:0}}.control-group{margin-bottom:16px}.control-group label{display:block;margin-bottom:6px;color:var(--text-main);font-weight:600;font-size:.85rem}.preset-group{display:flex;gap:8px}.preset-btn{flex:1;padding:10px 8px;background:var(--preset-bg);color:var(--preset-text);border:1px solid var(--border-color);border-radius:6px;cursor:pointer;font-weight:500;font-size:.85rem;transition:all .2s ease;position:relative;overflow:hidden}.preset-btn:hover{background:var(--preset-hover);border-color:var(--primary-focus)}.preset-btn:active{border-color:var(--primary)}.preset-btn:after{content:"";position:absolute;bottom:0;left:0;width:100%;height:3px;transition:background-color .2s ease}.preset-btn.low:after{background-color:#ef4444}.preset-btn.mid:after{background-color:#eab308}.preset-btn.high:after{background-color:var(--primary)}.preset-btn:hover:after{height:4px}.control-group select,.control-group input{width:100%;padding:10px 12px;background:var(--input-bg);border:1px solid var(--border-color);color:var(--text-main);border-radius:6px;font-size:.9rem;transition:border-color .2s ease,box-shadow .2s ease;-webkit-appearance:auto;-moz-appearance:auto;appearance:auto}.control-group select:focus,.control-group input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-focus)}.estimate-info-box{margin:20px 0;padding:14px;background:var(--upload-bg);border:1px dashed var(--border-color);border-radius:8px;text-align:center}#estimateInfo{font-weight:600;color:var(--text-main);font-size:.95rem}.compress-btn,.download-btn{width:100%;padding:12px;background:var(--primary);color:#fff;border:none;border-radius:6px;font-size:1rem;font-weight:600;cursor:pointer;transition:background .2s,transform .1s}.compress-btn:hover:not(:disabled),.download-btn:hover{background:var(--primary-hover)}.compress-btn:active:not(:disabled),.download-btn:active{transform:translateY(2px)}.compress-btn:disabled{background:var(--upload-border);color:var(--text-muted);cursor:not-allowed}.progress{margin-bottom:20px;background:var(--upload-bg);padding:16px;border-radius:10px;border:1px solid var(--border-color)}.progress-bar{width:100%;height:6px;background:var(--border-color);border-radius:3px;overflow:hidden;margin-bottom:10px}.progress-fill{height:100%;background:var(--primary);transition:width .3s ease;width:0%;border-radius:3px}#progressText{color:var(--text-muted);text-align:center;font-size:.9rem;font-weight:500}.result{text-align:center;padding-top:20px;border-top:1px solid var(--border-color)}.result h3{color:var(--primary);margin-bottom:10px;font-size:1.2rem}#resultInfo{color:var(--text-main);margin-bottom:20px;font-weight:500;line-height:1.4;font-size:.95rem}.hidden{display:none!important}@media (max-width: 640px){.locale-toggle,.theme-toggle{top:12px}.locale-toggle{left:12px}.theme-toggle{right:12px}body{padding-top:76px}}