:root{--primary:#0080c8;--primary-light:#1a94d6;--accent:#a2c516;--white:#fff;--gray-light:#f9f9fb;--gray:#c0cac9;--dark:#434549;--text:#333;--text-light:#666;--shadow:0 4px 20px #0080c826;--shadow-lg:0 8px 40px #0080c833;--radius:12px;--radius-full:9999px;--font-heading:"Inter Tight", system-ui, sans-serif;--font-body:"Raleway", system-ui, sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-body);color:var(--text);background:var(--gray-light);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-size:16px;line-height:1.6}h1,h2,h3,h4{font-family:var(--font-heading);color:var(--primary);font-weight:600}button{font-family:var(--font-body);cursor:pointer;border:none;outline:none}a{color:var(--primary);text-decoration:none}.header{background:var(--primary);color:var(--white);z-index:100;padding:0 20px;position:sticky;top:0}.header-inner{justify-content:space-between;align-items:center;max-width:800px;height:56px;margin:0 auto;display:flex}.header-favicon{object-fit:cover;border-radius:50%;width:32px;height:32px}.header-logo{font-family:var(--font-heading);letter-spacing:-.3px;font-size:17px;font-weight:700}.header-brand{align-items:center;gap:10px;display:flex}.header-link{color:var(--gray);font-size:14px;transition:color .2s}.header-link:hover{color:var(--white)}.upload-screen{justify-content:center;align-items:center;min-height:calc(100vh - 56px);padding:24px 20px;display:flex}.upload-content{text-align:center;width:100%;max-width:480px}.upload-content h1{letter-spacing:-.5px;margin-bottom:12px;font-size:32px}.upload-subtitle{color:var(--text-light);margin-bottom:32px;font-size:16px;line-height:1.5}.upload-area{background:var(--white);border:2px dashed var(--gray);border-radius:var(--radius);cursor:pointer;margin-bottom:40px;padding:40px 24px;transition:border-color .2s,background .2s}.upload-area:hover,.upload-area:focus-within{border-color:var(--primary);background:#0080c808}.upload-icon{color:var(--primary);margin-bottom:16px}.upload-text{font-family:var(--font-heading);color:var(--primary);margin-bottom:8px;font-size:18px;font-weight:600}.upload-hint{color:var(--text-light);font-size:14px}.upload-input{opacity:0;pointer-events:none;width:0;height:0;position:absolute}.upload-steps{justify-content:center;align-items:center;gap:12px;display:flex}.step{align-items:center;gap:8px;display:flex}.step-number{background:var(--primary);width:28px;height:28px;color:var(--white);font-family:var(--font-heading);border-radius:50%;justify-content:center;align-items:center;font-size:14px;font-weight:600;display:flex}.step-label{color:var(--text-light);white-space:nowrap;font-size:14px}.step-divider{background:var(--gray);width:24px;height:2px}@media (width<=480px){.upload-content h1{font-size:26px}.upload-area{padding:32px 16px}.step-label{font-size:12px}.step-divider{width:16px}}.crop-screen{background:#1a1a2e;flex-direction:column;height:calc(100dvh - 56px);display:flex;overflow:hidden}.crop-header{background:var(--primary);color:var(--white);z-index:10;justify-content:space-between;align-items:center;padding:12px 16px;display:flex}.crop-back{color:var(--white);background:0 0;border-radius:6px;align-items:center;gap:4px;padding:4px 8px;font-size:15px;transition:background .2s;display:flex}.crop-back:hover{background:#ffffff1a}.crop-format-label{font-family:var(--font-heading);color:var(--gray);font-size:14px;font-weight:500}.crop-container{flex:1;min-height:0;position:relative;overflow:hidden}.crop-controls{padding:12px 20px;padding-bottom:max(12px, env(safe-area-inset-bottom));background:var(--primary);z-index:10;flex-direction:column;flex-shrink:0;gap:12px;display:flex}.zoom-control{color:var(--white);align-items:center;gap:12px;display:flex}.zoom-slider{appearance:none;background:#ffffff4d;border-radius:2px;outline:none;flex:1;height:4px}.zoom-slider::-webkit-slider-thumb{appearance:none;background:var(--accent);cursor:pointer;border-radius:50%;width:20px;height:20px}.zoom-slider::-moz-range-thumb{background:var(--accent);cursor:pointer;border:none;border-radius:50%;width:20px;height:20px}.crop-confirm-btn{background:var(--accent);width:100%;color:var(--primary);font-family:var(--font-heading);border-radius:var(--radius-full);padding:14px;font-size:17px;font-weight:700;transition:transform .15s,box-shadow .2s}.crop-confirm-btn:active{transform:scale(.97)}.crop-confirm-btn:hover{box-shadow:0 4px 16px #ee26}.result-screen{flex-direction:column;min-height:calc(100dvh - 56px);display:flex}.result-content{text-align:center;flex-direction:column;flex:1;width:100%;max-width:480px;margin:0 auto;padding:16px 20px;display:flex}.result-content h2{flex-shrink:0;margin-bottom:4px;font-size:28px}.result-subtitle{color:var(--text-light);flex-shrink:0;margin-bottom:12px}.result-preview{background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow-lg);flex:1;min-height:0;margin-bottom:16px;overflow:hidden}.result-preview img{object-fit:contain;width:100%;height:100%;display:block}.result-actions{flex-shrink:0;gap:12px;margin-bottom:8px;display:flex}.btn-primary,.btn-share{font-family:var(--font-heading);border-radius:var(--radius-full);flex:1;justify-content:center;align-items:center;gap:8px;padding:14px 20px;font-size:16px;font-weight:600;transition:transform .15s,box-shadow .2s;display:flex}.btn-primary{background:var(--primary);color:var(--white)}.btn-primary:hover{box-shadow:var(--shadow)}.btn-share{background:var(--accent);color:var(--primary)}.btn-share:hover{box-shadow:0 4px 16px #ee26}.btn-primary:active,.btn-share:active{transform:scale(.97)}.btn-send{border:2px solid var(--primary);width:100%;color:var(--primary);font-family:var(--font-heading);border-radius:var(--radius-full);background:0 0;flex-shrink:0;justify-content:center;align-items:center;gap:8px;padding:12px;font-size:15px;font-weight:600;transition:background .2s,color .2s;display:flex}.btn-send:hover:not(:disabled){background:var(--primary);color:var(--white)}.btn-send:disabled{opacity:.6;cursor:default}.send-hint{color:var(--text-light);flex-shrink:0;margin:4px 0;font-size:12px}.btn-restart{color:var(--text-light);padding:8px;padding-bottom:max(8px, env(safe-area-inset-bottom));background:0 0;flex-shrink:0;width:100%;font-size:15px;transition:color .2s}.btn-restart:hover{color:var(--primary)}@media (width<=480px){.result-content h2{font-size:22px}}.loading-screen{flex-direction:column;justify-content:center;align-items:center;gap:20px;min-height:calc(100vh - 56px);display:flex}.spinner{border:4px solid var(--gray);border-top-color:var(--primary);border-radius:50%;width:48px;height:48px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.loading-text{color:var(--text-light);font-size:16px}.app{flex-direction:column;min-height:100vh;display:flex}main{flex:1}