@import "https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap";.cizel-header{height:var(--header-height);background:var(--header-bg);border-bottom:1px solid var(--border);z-index:10;flex-shrink:0;align-items:center;gap:12px;padding:0 12px;display:flex;position:relative}.cizel-logo{flex-shrink:0;align-items:center;gap:8px;text-decoration:none;display:flex}.cizel-logo-icon{background:linear-gradient(135deg, var(--accent-500), #7c3aed);color:#fff;letter-spacing:-.5px;border-radius:6px;justify-content:center;align-items:center;width:28px;height:28px;font-size:14px;font-weight:700;display:flex;box-shadow:0 2px 8px #4f6ef566}.cizel-logo-text{flex-direction:column;line-height:1.1;display:flex}.cizel-logo-name{color:var(--text-primary);letter-spacing:-.3px;font-size:15px;font-weight:700}.cizel-logo-brand{color:var(--text-muted);letter-spacing:.3px;font-size:10px;font-weight:400}.header-filename{flex:1;align-items:center;gap:6px;min-width:0;display:flex}.header-filename input{border-radius:var(--radius-sm);color:var(--text-primary);width:200px;max-width:300px;transition:all var(--transition);background:0 0;border:1px solid #0000;padding:3px 8px;font-size:13px;font-weight:500}.header-filename input:hover{border-color:var(--border);background:var(--bg-surface-2)}.header-filename input:focus{border-color:var(--accent-500);background:var(--bg-surface-2);box-shadow:0 0 0 2px var(--accent-glow)}.header-save-indicator{color:var(--text-muted);white-space:nowrap;align-items:center;gap:5px;font-size:11px;display:flex}.save-dot{background:var(--text-muted);border-radius:50%;flex-shrink:0;width:6px;height:6px}.save-dot.saved{background:var(--green-400)}.save-dot.saving{background:var(--yellow-400);animation:1s infinite pulse}.save-dot.error{background:var(--red-400)}.header-actions{align-items:center;gap:4px;margin-left:auto;display:flex}.header-btn{border-radius:var(--radius-sm);color:var(--text-secondary);cursor:pointer;transition:all var(--transition);white-space:nowrap;background:0 0;border:1px solid #0000;align-items:center;gap:5px;padding:5px 10px;font-size:12px;font-weight:500;display:flex}.header-btn:hover{background:var(--bg-hover);color:var(--text-primary);border-color:var(--border)}.header-btn.primary{background:var(--accent-500);color:#fff;border-color:var(--accent-500)}.header-btn.primary:hover{background:var(--accent-600);border-color:var(--accent-600)}.header-btn.icon-only{gap:0;padding:5px 7px}.theme-toggle{border-radius:var(--radius-sm);cursor:pointer;width:32px;height:32px;color:var(--text-secondary);transition:all var(--transition);justify-content:center;align-items:center;display:flex}.theme-toggle:hover{background:var(--bg-hover);color:var(--text-primary)}.cloud-indicator{border:1px solid #0000;border-radius:20px;align-items:center;gap:6px;padding:4px 10px;font-size:11px;font-weight:500;display:flex}.cloud-indicator.idle{color:var(--text-muted)}.cloud-indicator.saving{color:var(--yellow-400);background:#facc150d;border-color:#facc1533}.cloud-indicator.saved{color:var(--green-400);background:#4ade800d;border-color:#4ade8033}.cloud-indicator.error{color:var(--red-400);background:#f871710d;border-color:#f8717133}.cloud-indicator.offline{color:var(--text-muted);border-color:var(--border);background:var(--bg-surface-2)}.cloud-icon-spin{animation:1s linear infinite spin}.export-dropdown,.user-dropdown{background:var(--bg-surface-2);border:1px solid var(--border-strong);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);z-index:999;min-width:170px;padding:4px;animation:.12s fadeIn;position:absolute;top:calc(100% + 6px);right:0}.user-profile-btn{background:var(--bg-surface-3);border:1px solid var(--border);color:var(--text-primary);cursor:pointer;transition:all var(--transition);border-radius:20px;align-items:center;gap:6px;padding:3px 8px 3px 4px;font-size:12px;font-weight:500;display:flex}.user-profile-btn:hover{border-color:var(--accent-500);background:var(--bg-hover)}.user-avatar{background:linear-gradient(135deg, var(--accent-500), #7c3aed);color:#fff;border-radius:50%;justify-content:center;align-items:center;width:22px;height:22px;font-size:11px;font-weight:700;display:flex}.user-name-label{text-overflow:ellipsis;white-space:nowrap;max-width:100px;overflow:hidden}.user-dropdown-header{flex-direction:column;gap:2px;padding:6px 10px;display:flex}.user-dropdown-header strong{color:var(--text-primary);font-size:12px}.user-dropdown-header span{color:var(--text-muted);word-break:break-all;font-size:10px}.ribbon{background:var(--bg-surface);border-bottom:1px solid var(--border);-webkit-user-select:none;user-select:none;flex-direction:column;flex-shrink:0;display:flex}.ribbon-tabs{background:var(--bg-app);border-bottom:1px solid 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6px);left:0}.color-grid{grid-template-columns:repeat(7,20px);gap:3px;display:grid}.color-swatch{cursor:pointer;border:1px solid #ffffff26;border-radius:3px;width:20px;height:20px;transition:transform .12s,box-shadow .12s}.color-swatch:hover{box-shadow:0 0 0 2px var(--accent-400);z-index:1;position:relative;transform:scale(1.2)}.formula-guide-box{flex-direction:column;width:780px;max-width:92vw;max-height:84vh;display:flex}.formula-guide-header{background:var(--bg-surface-2);border-bottom:1px solid var(--border);padding:12px 18px}.formula-guide-title{align-items:center;gap:10px;display:flex}.formula-guide-badge{border-radius:var(--radius-sm);background:linear-gradient(135deg, var(--accent-500), 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button{color:var(--text-muted);border-radius:var(--radius-sm);padding:2px}.formula-help-header button:hover{color:var(--text-primary);background:var(--bg-hover)}.formula-help-list{padding:6px;overflow-y:auto}.formula-help-item{border-radius:var(--radius-sm);cursor:pointer;transition:background var(--transition);grid-template-rows:auto auto;grid-template-columns:120px 1fr;gap:2px 8px;padding:7px 8px;display:grid}.formula-help-item:hover{background:var(--bg-hover)}.formula-help-name{font-family:var(--font-mono);color:var(--accent-400);grid-area:1/1;font-size:12px;font-weight:700}.formula-help-desc{color:var(--text-secondary);grid-area:1/2;font-size:11px}.formula-help-usage{font-family:var(--font-mono);color:var(--text-muted);grid-area:2/1/auto/-1;font-size:10px}.cizel-context-menu-overlay{z-index:9998;cursor:default;background:0 0;position:fixed;inset:0}.cizel-context-menu{z-index:9999;background:var(--bg-surface-2);border:1px solid var(--border-strong);border-radius:var(--radius-md);-webkit-backdrop-filter:blur(16px);min-width:220px;max-width:280px;font-family:var(--font-ui);-webkit-user-select:none;user-select:none;padding:4px;animation:.12s cubic-bezier(.16,1,.3,1) contextMenuFadeIn;position:fixed;box-shadow:0 10px 30px -5px #00000073,0 0 0 1px #ffffff12}@keyframes contextMenuFadeIn{0%{opacity:0;transform:scale(.96)translateY(-2px)}to{opacity:1;transform:scale(1)translateY(0)}}.ctx-item{border-radius:var(--radius-sm);width:100%;color:var(--text-primary);cursor:pointer;text-align:left;background:0 0;border:none;align-items:center;gap:8px;padding:6px 8px;font-size:12px;font-weight:500;transition:background .1s,color 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