:root{--bg-app:#0b1120;--bg-header:#0f172ad9;--bg-sidebar:#0f172a;--bg-card:#1e293b;--bg-hover:#334155;--border-color:#334155;--text-main:#f8fafc;--text-muted:#94a3b8;--primary-color:#3b82f6;--primary-gradient:linear-gradient(135deg, #3b82f6 0%, #6366f1 100%);--accent-emerald:#10b981;--shadow-sm:0 1px 3px #0000004d;--shadow-md:0 4px 14px #0006;--shadow-lg:0 10px 30px #0009}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-app);color:var(--text-main);flex-direction:column;height:100vh;font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;display:flex;overflow:hidden}button,label,input{-webkit-tap-highlight-color:transparent}.app-loader{z-index:5000;background:radial-gradient(circle at 50% 38%,#3b82f629,#0000 34%),#070d1b;place-items:center;padding:24px;transition:opacity .32s,visibility .32s;display:grid;position:fixed;inset:0}.app-loader.is-complete{opacity:0;visibility:hidden}.loader-card{text-align:center;width:min(360px,100%)}.loader-mark{color:#fff;background:var(--primary-gradient);border-radius:20px;place-items:center;width:68px;height:68px;margin:0 auto 20px;animation:1.8s ease-in-out infinite loaderFloat;display:grid;box-shadow:0 18px 50px #3b82f657}.loader-copy{flex-direction:column;gap:7px;display:flex}.loader-copy strong{letter-spacing:-.03em;font-size:1.35rem}.loader-copy span,.loader-card p{color:var(--text-muted);font-size:.86rem}.loader-progress{background:#1e293b;border-radius:999px;height:5px;margin:22px 0 14px;overflow:hidden}.loader-progress span{border-radius:inherit;background:var(--primary-gradient);width:8%;height:100%;transition:width .35s;display:block;box-shadow:0 0 16px #60a5fab3}.app-loader.has-error .loader-progress span{background:#ef4444}@keyframes loaderFloat{0%,to{transform:translateY(0)}50%{transform:translateY(-7px)}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}.app-header{background:var(--bg-header);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--border-color);z-index:100;justify-content:space-between;align-items:center;height:64px;padding:0 24px;display:flex}.header-left{align-items:center;gap:20px;display:flex}.brand-logo{align-items:center;gap:12px;display:flex}.logo-badge{background:var(--primary-gradient);color:#fff;border-radius:10px;justify-content:center;align-items:center;width:38px;height:38px;display:flex;box-shadow:0 4px 12px #3b82f666}.brand-text{flex-direction:column;display:flex}.brand-name{letter-spacing:-.3px;font-size:1.1rem;font-weight:700}.brand-tag{color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px;font-size:.72rem}.doc-info-pill{border:1px solid var(--border-color);color:#cbd5e1;background:#1e293bb3;border-radius:99px;align-items:center;gap:8px;padding:6px 14px;font-size:.85rem;display:flex}.privacy-badge{color:#34d399;background:#10b98126;border:1px solid #10b9814d;border-radius:6px;padding:2px 8px;font-size:.72rem;font-weight:600}.header-center{align-items:center;gap:16px;display:flex}.header-control-group{gap:6px;display:flex}.header-divider{background:var(--border-color);width:1px;height:24px}.zoom-controls{background:var(--bg-card);border:1px solid var(--border-color);border-radius:8px;align-items:center;padding:3px;display:flex}.zoom-btn{color:var(--text-muted);cursor:pointer;background:0 0;border:none;border-radius:6px;justify-content:center;align-items:center;width:28px;height:28px;transition:all .2s;display:flex}.zoom-btn:hover{background:var(--bg-hover);color:#fff}.zoom-level{text-align:center;width:54px;font-size:.82rem;font-weight:600}.tool-icon-btn{background:var(--bg-card);border:1px solid var(--border-color);color:var(--text-main);cursor:pointer;border-radius:8px;justify-content:center;align-items:center;width:36px;height:36px;transition:all .2s;display:flex}.tool-icon-btn:hover:not(:disabled){background:var(--bg-hover)}.tool-icon-btn:disabled{opacity:.4;cursor:not-allowed}.header-right{align-items:center;gap:12px;display:flex}.btn{cursor:pointer;border:none;border-radius:8px;align-items:center;gap:8px;padding:9px 18px;font-size:.88rem;font-weight:600;text-decoration:none;transition:all .2s cubic-bezier(.4,0,.2,1);display:inline-flex}.btn-secondary{background:var(--bg-card);border:1px solid var(--border-color);color:var(--text-main)}.btn-secondary:hover{background:var(--bg-hover);border-color:#475569}.btn-primary{background:var(--primary-gradient);color:#fff;box-shadow:0 4px 14px #3b82f659}.btn-primary:hover{transform:translateY(-1px);box-shadow:0 6px 20px #3b82f680}.btn-outline{border:1px solid var(--border-color);color:var(--text-muted);background:0 0}.btn-outline:hover{border-color:var(--primary-color);color:var(--text-main)}.full-width{justify-content:center;width:100%}.app-main{flex:1;display:flex;overflow:hidden}.sidebar-left,.sidebar-right{background:var(--bg-sidebar);border-right:1px solid var(--border-color);flex-direction:column;width:265px;display:flex;overflow-y:auto}.sidebar-right{border-right:none;border-left:1px solid var(--border-color)}.sidebar-section{padding:18px}.sidebar-section-header{justify-content:space-between;align-items:center;margin-bottom:12px;display:flex}.sidebar-section-title{color:#64748b;letter-spacing:.8px;margin-bottom:12px;font-size:.72rem;font-weight:700}.sidebar-divider{background:var(--border-color);height:1px}.tools-stack{flex-direction:column;gap:8px;display:flex}.tool-btn{color:#cbd5e1;cursor:pointer;text-align:left;background:0 0;border:1px solid #0000;border-radius:10px;align-items:center;gap:12px;width:100%;padding:10px 14px;font-size:.88rem;font-weight:500;transition:all 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env(safe-area-inset-bottom));position:sticky;bottom:0}.modal-footer .btn{min-height:46px}.modal-footer .btn-primary{flex:1;justify-content:center}.toast-container{left:12px;right:12px;bottom:calc(88px + env(safe-area-inset-bottom))}.toast{width:100%;min-width:0;padding:12px 14px}}@media (width<=380px){.tools-stack{grid-template-columns:repeat(6,58px)}.sig-tab svg,.control-label{display:none}}