:root{--primary-color:#007aff;--bg-color:#f5f5f7;--surface-color:#fff;--text-primary:#1c1c1e;--text-secondary:#86868b;--border-color:#e5e5ea;--shadow-sm:0 2px 8px #0000000a;--shadow-md:0 4px 16px #00000014;--radius-md:12px;--radius-lg:20px}@media (prefers-color-scheme:dark){:root{--primary-color:#0a84ff;--bg-color:#000;--surface-color:#1c1c1e;--text-primary:#f5f5f7;--text-secondary:#86868b;--border-color:#38383a;--shadow-sm:0 2px 8px #0003;--shadow-md:0 4px 16px #0006}}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-color);color:var(--text-primary);-webkit-font-smoothing:antialiased;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;line-height:1.5}input,textarea,button{font-family:inherit}.app-container{height:100vh;display:flex;overflow:hidden}.editor-sidebar{background-color:var(--surface-color);border-right:1px solid var(--border-color);width:400px;box-shadow:var(--shadow-sm);z-index:10;flex-direction:column;gap:20px;padding:24px;display:flex;overflow-y:auto}.editor-header h1{margin-bottom:4px;font-size:20px;font-weight:600}.editor-header p{color:var(--text-secondary);font-size:13px}.form-group{flex-direction:column;gap:8px;display:flex}.form-group label{color:var(--text-primary);font-size:14px;font-weight:500}.form-input,.form-textarea{border:1px solid var(--border-color);border-radius:var(--radius-md);background-color:var(--bg-color);width:100%;color:var(--text-primary);padding:12px;font-size:14px;transition:all .2s}.form-input:focus,.form-textarea:focus{border-color:var(--primary-color);outline:none;box-shadow:0 0 0 3px #007aff1a}.form-textarea{resize:vertical;min-height:80px}.preview-area{background-color:var(--bg-color);flex-direction:column;flex:1;display:flex;position:relative}.preview-header{border-bottom:1px solid var(--border-color);background-color:var(--surface-color);justify-content:space-between;align-items:center;height:60px;padding:0 24px;display:flex}.copy-btn{background-color:var(--primary-color);color:#fff;border-radius:var(--radius-md);cursor:pointer;border:none;align-items:center;gap:8px;padding:8px 20px;font-size:14px;font-weight:600;transition:all .2s;display:flex}.copy-btn:hover{opacity:.9;transform:translateY(-1px)}.copy-btn:active{transform:translateY(1px)}.preview-content{flex:1;justify-content:center;align-items:flex-start;padding:40px;display:flex;overflow-y:auto}.phone-mockup{border-radius:var(--radius-lg);width:375px;box-shadow:var(--shadow-md);background-color:#fff;border:8px solid #333;overflow:hidden}.phone-mockup.dark{border:8px solid #111}.phone-mockup-inner{color:#333;background-color:#fff;min-height:600px;padding:20px}.toast{color:#fff;z-index:1000;background-color:#000c;border-radius:30px;padding:12px 24px;font-size:14px;animation:.3s fadein,.3s 2.5s fadeout;position:fixed;top:20px;left:50%;transform:translate(-50%)}@keyframes fadein{0%{opacity:0;top:0}to{opacity:1;top:20px}}@keyframes fadeout{0%{opacity:1;top:20px}to{opacity:0;top:0}}@media (width<=768px){.app-container{flex-direction:column;height:auto;min-height:100vh;overflow-y:auto}.form-input,.form-textarea,input{font-size:16px!important}.editor-sidebar{border-right:none;border-bottom:5px solid var(--border-color);width:100%;box-shadow:none;flex:none;padding:16px;overflow-y:visible}.preview-area{width:100%;overflow:visible}.preview-header{z-index:20;border-bottom:1px solid var(--border-color);padding:0 16px;position:sticky;top:0}.preview-content{padding:16px;overflow-y:visible}.phone-mockup{width:100%;box-shadow:none;border:none;border-radius:0}.phone-mockup-inner{min-height:auto;padding:0}}.login-container{background-color:var(--bg-color);justify-content:center;align-items:center;min-height:100vh;display:flex}.login-card{background:var(--surface-color);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);width:100%;max-width:400px;padding:40px}.login-card h2{text-align:center;margin-bottom:24px}.login-card .form-group{margin-bottom:16px}.login-card input{border:1px solid var(--border-color);border-radius:var(--radius-md);width:100%;margin-top:6px;padding:12px}.submit-btn{background:var(--primary-color);color:#fff;border-radius:var(--radius-md);cursor:pointer;border:none;width:100%;margin-top:10px;padding:12px;font-size:16px}.error-msg{color:#ff3b30;text-align:center;margin-bottom:10px;font-size:14px}.toggle-mode{text-align:center;color:var(--primary-color);cursor:pointer;margin-top:16px;font-size:14px}