:root{--bg-color: #000000;--surface-color: #111111;--primary-color: #ffffff;--primary-variant: #aaaaaa;--secondary-color: #dddddd;--text-primary: #ffffff;--text-secondary: #888888;--error-color: #ffffff;--orp-color: #ffffff;--font-family: "Inter", sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-color);color:var(--text-primary);font-family:var(--font-family);height:100vh;display:flex;flex-direction:column;overflow:hidden;-webkit-font-smoothing:antialiased}.app-container{display:flex;flex-direction:column;height:100%;max-width:1200px;margin:0 auto;width:100%}header{padding:20px;display:flex;justify-content:space-between;align-items:center}h1{font-size:1.5rem;font-weight:700;letter-spacing:.5px;background:linear-gradient(90deg,var(--primary-color),var(--secondary-color));-webkit-background-clip:text;-webkit-text-fill-color:transparent}.file-upload-wrapper{display:flex;align-items:center;gap:15px}input[type=file]{display:none}.btn{padding:10px 20px;border-radius:8px;font-weight:600;cursor:pointer;transition:all .2s ease;border:none;font-size:.9rem}.primary-btn{background-color:var(--primary-color);color:#000}.primary-btn:hover{background-color:#e0e0e0;transform:translateY(-1px)}#file-name{color:var(--text-secondary);font-size:.85rem;max-width:150px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}main.reader-area{flex:1;display:flex;justify-content:center;align-items:center;position:relative}.welcome-message{color:var(--text-secondary);font-size:1.2rem;text-align:center}.rsvp-container{position:relative;width:100%;height:200px;display:flex;align-items:center}.focus-line{position:absolute;top:20%;bottom:20%;left:50%;width:2px;background-color:#ffffff1a;transform:translate(-50%);z-index:0;pointer-events:none}.focus-line:before,.focus-line:after{content:"";position:absolute;left:-4px;width:10px;height:2px;background-color:#fff3}.focus-line:before{top:0}.focus-line:after{bottom:0}.word-display{position:relative;width:100%;font-size:3.5rem;font-weight:600;white-space:pre;z-index:1;display:flex}.word-display .left-part{flex:1;text-align:right;color:var(--text-secondary)}.word-display .orp-char{color:var(--orp-color);flex:0 0 auto;text-align:center;width:auto;font-weight:700}.word-display .right-part{flex:1;text-align:left;color:var(--text-secondary)}footer.controls-panel{position:absolute;bottom:30px;left:50%;transform:translate(-50%);width:90%;max-width:600px;background-color:#1e1e1ea6;backdrop-filter:blur(40px) saturate(180%);-webkit-backdrop-filter:blur(40px) saturate(180%);border-radius:14px;padding:12px 20px;display:flex;flex-direction:column;gap:12px;box-shadow:0 10px 40px #0006,inset 0 1px #ffffff1a;border:1px solid rgba(255,255,255,.15);z-index:100;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}.controls-top-row{display:flex;justify-content:space-between;align-items:center;width:100%}.settings-controls{display:flex;align-items:center;gap:8px;width:25%}.wpm-text{font-size:13px;color:#ffffffd9;white-space:nowrap;font-weight:500}.stepper-icon{width:26px;height:26px}.stepper-icon svg{width:14px;height:14px}.playback-controls{display:flex;justify-content:center;align-items:center;gap:20px;flex:1}.right-controls{display:flex;justify-content:flex-end;width:25%}.progress-container{display:flex;align-items:center;gap:14px;width:100%}.time-text{font-size:12px;color:#ffffffb3;font-variant-numeric:tabular-nums;font-weight:500;letter-spacing:.3px;min-width:40px}#words-read{text-align:left}#total-words{text-align:right}input[type=range]{-moz-appearance:none;appearance:none;-webkit-appearance:none;width:100%;height:4px;background:#ffffff4d;border-radius:2px;outline:none;cursor:pointer}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:12px;height:12px;border-radius:50%;background:#fff;cursor:default;box-shadow:0 1px 3px #00000080}.icon-btn{background:transparent;border:none;color:#fff;width:32px;height:32px;border-radius:6px;display:flex;justify-content:center;align-items:center;cursor:pointer;transition:background-color .15s,opacity .15s}.icon-btn:hover{background-color:#ffffff1a;opacity:1}.icon-btn:active{background-color:#ffffff26;transform:scale(.96)}.primary-icon-btn{width:40px;height:40px;border-radius:8px}.primary-icon-btn svg{width:24px;height:24px}.icon-btn svg{width:18px;height:18px}.hidden{display:none!important}.spinner{width:40px;height:40px;border:4px solid rgba(255,255,255,.1);border-left-color:var(--primary-color);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}