*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #0d0f14;--surface: #161a24;--surface2: #1e2330;--border: rgba(255,255,255,.07);--primary: #4f8ef7;--primary2: #7b5ef8;--text: #e8eaf0;--text-muted:#8892a4;--radius: 14px;--font: "Outfit", "Pretendard", system-ui, sans-serif}html,body{height:100%;background:var(--bg);color:var(--text);font-family:var(--font);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased}#app{min-height:100vh}.brand-logo,.home-brand{display:flex;align-items:center;gap:10px}.logo-badge{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:10px;background:linear-gradient(135deg,var(--primary),var(--primary2));font-size:18px;font-weight:700;color:#fff;box-shadow:0 4px 20px #4f8ef766}.logo-name{font-size:20px;font-weight:600;color:var(--text);letter-spacing:-.3px}.loading-screen{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:28px;background:var(--bg);background-image:radial-gradient(ellipse at 50% 0%,rgba(79,142,247,.12) 0%,transparent 60%)}.spinner{width:44px;height:44px;border:3px solid var(--surface2);border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.loading-msg{color:var(--text-muted);font-size:14px;text-align:center;line-height:1.7;animation:pulse 1.5s ease-in-out infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.btn-google-auth{display:inline-flex;align-items:center;gap:10px;padding:12px 28px;border:1px solid var(--border);border-radius:8px;background:var(--surface);color:var(--text);font-size:15px;font-weight:500;font-family:var(--font);cursor:pointer;transition:background .2s,border-color .2s,transform .15s,box-shadow .2s}.btn-google-auth:hover{background:var(--surface2);border-color:var(--primary);transform:translateY(-1px);box-shadow:0 4px 20px #4f8ef733}.btn-google-auth:active{transform:translateY(0)}.btn-google-auth:disabled{opacity:.6;cursor:wait}.btn-google-auth .google-icon{flex-shrink:0}.error-screen{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;padding:24px;text-align:center;background:var(--bg)}.error-icon{font-size:48px;color:#f0a060}.error-title{font-size:22px;font-weight:600;color:var(--text)}.error-detail{font-size:14px;color:var(--text-muted);max-width:440px;white-space:pre-wrap;word-break:break-all}.btn-retry{margin-top:8px;padding:10px 24px;border:1px solid var(--border);border-radius:8px;background:var(--surface);color:var(--text);font-size:14px;font-family:var(--font);cursor:pointer;transition:background .2s,border-color .2s}.btn-retry:hover{background:var(--surface2);border-color:var(--primary)}.home-screen{min-height:100vh;display:flex;flex-direction:column;background:var(--bg);background-image:radial-gradient(ellipse at 20% 10%,rgba(79,142,247,.14) 0%,transparent 50%),radial-gradient(ellipse at 80% 80%,rgba(123,94,248,.1) 0%,transparent 50%)}.home-header{padding:24px 40px;border-bottom:1px solid var(--border)}.home-main{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:80px 24px;text-align:center}.home-title{font-size:clamp(32px,5vw,52px);font-weight:700;line-height:1.2;letter-spacing:-1px;margin-bottom:20px}.gradient-text{background:linear-gradient(90deg,var(--primary),var(--primary2));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.home-subtitle{font-size:17px;color:var(--text-muted);max-width:480px;margin:0 auto 60px;line-height:1.7}.steps-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px;max-width:780px;width:100%;margin-bottom:48px}.step-card{display:flex;gap:16px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px;text-align:left;transition:border-color .2s,transform .2s}.step-card:hover{border-color:#4f8ef759;transform:translateY(-2px)}.step-num{flex-shrink:0;width:32px;height:32px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--primary2));display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;color:#fff}.step-content h3{font-size:15px;font-weight:600;margin-bottom:4px}.step-content p{font-size:13px;color:var(--text-muted);line-height:1.5}.home-badge-row{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}.badge{padding:5px 14px;border-radius:999px;font-size:12px;font-weight:600;background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff;letter-spacing:.5px}.badge-outline{background:transparent;border:1px solid var(--border);color:var(--text-muted)}.home-footer{padding:20px 40px;border-top:1px solid var(--border);text-align:center;font-size:13px;color:var(--text-muted)}.home-footer a{color:var(--primary);text-decoration:none}.home-footer a:hover{text-decoration:underline}.viewer-container{display:flex;flex-direction:column;height:100vh;background:#1a1d24}.viewer-header{display:flex;align-items:center;justify-content:space-between;padding:12px 24px;background:var(--surface);border-bottom:1px solid var(--border);flex-shrink:0;z-index:10}.viewer-brand{display:flex;align-items:center;gap:10px}.viewer-brand .logo-badge{width:30px;height:30px;font-size:14px}.viewer-filename{font-size:15px;font-weight:500;color:var(--text);max-width:400px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.viewer-info{display:flex;align-items:center;gap:12px}.viewer-page-count{font-size:13px;color:var(--text-muted);background:var(--surface2);padding:4px 12px;border-radius:6px}.viewer-pages{flex:1;overflow-y:auto;padding:32px 24px;display:flex;flex-direction:column;align-items:center;gap:24px;scroll-behavior:smooth}.viewer-page{background:#fff;border-radius:4px;box-shadow:0 2px 12px #0000004d,0 0 0 1px #ffffff0d;overflow:hidden;max-width:100%}.viewer-page svg{display:block;max-width:100%;height:auto}.editor-container{display:flex;flex-direction:column;height:100vh;background:var(--bg)}.editor-header{display:flex;align-items:center;justify-content:space-between;padding:10px 20px;background:var(--surface);border-bottom:1px solid var(--border);flex-shrink:0;z-index:10}.editor-brand{display:flex;align-items:center;gap:10px}.editor-brand .logo-badge{width:28px;height:28px;font-size:13px;border-radius:7px}.editor-filename{font-size:14px;font-weight:500;color:var(--text);max-width:380px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.editor-actions{display:flex;align-items:center;gap:12px}.editor-status{font-size:12px;color:var(--text-muted);background:var(--surface2);padding:4px 12px;border-radius:6px}.editor-main{flex:1;overflow:hidden;position:relative}.editor-main iframe{display:block;width:100%;height:100%;border:none}