:root{--bg-primary: #0B0F17;--bg-secondary: #131A26;--bg-surface: #1A2333;--bg-card: rgba(26, 35, 51, .7);--border-color: rgba(255, 255, 255, .08);--border-focus: #6366F1;--text-primary: #F8FAFC;--text-secondary: #94A3B8;--text-muted: #64748B;--accent-primary: #6366F1;--accent-hover: #4F46E5;--accent-gradient: linear-gradient(135deg, #6366F1 0%, #8B5CF6 100%);--accent-glow: rgba(99, 102, 241, .25);--danger-color: #EF4444;--danger-bg: rgba(239, 68, 68, .12);--success-color: #10B981;--canvas-bg: #FFFFFF;--canvas-border: rgba(255, 255, 255, .12);--checker-light: #F8FAFC;--checker-dark: #E2E8F0;--shadow-sm: 0 2px 4px rgba(0, 0, 0, .2);--shadow-md: 0 4px 12px rgba(0, 0, 0, .3);--shadow-lg: 0 10px 25px rgba(0, 0, 0, .4);--radius-sm: 6px;--radius-md: 10px;--radius-lg: 14px;--radius-full: 9999px;--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-brand: "Outfit", sans-serif}body.theme-light{--bg-primary: #F1F5F9;--bg-secondary: #FFFFFF;--bg-surface: #F8FAFC;--bg-card: rgba(255, 255, 255, .9);--border-color: #E2E8F0;--border-focus: #4F46E5;--text-primary: #0F172A;--text-secondary: #475569;--text-muted: #94A3B8;--canvas-bg: #FFFFFF;--canvas-border: #CBD5E1;--checker-light: #FFFFFF;--checker-dark: #F1F5F9;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .08);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-sans);background-color:var(--bg-primary);color:var(--text-primary);min-height:100vh;display:flex;flex-direction:column;line-height:1.5;transition:background-color .25s ease,color .25s ease;overflow-x:hidden}.app-header{height:64px;background-color:var(--bg-secondary);border-bottom:1px solid var(--border-color);display:flex;align-items:center;justify-content:space-between;padding:0 24px;position:sticky;top:0;z-index:50;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.header-brand{display:flex;align-items:center;gap:12px}.brand-logo{width:40px;height:40px;background:var(--accent-gradient);border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;color:#fff;box-shadow:0 4px 12px var(--accent-glow)}.brand-title{font-family:var(--font-brand);font-size:1.25rem;font-weight:700;letter-spacing:-.02em;display:flex;align-items:center;gap:6px}.brand-title span{background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;font-weight:800}.brand-subtitle{font-size:.75rem;color:var(--text-muted)}.header-modes{display:flex;align-items:center;background:var(--bg-surface);border:1px solid var(--border-color);border-radius:var(--radius-full);padding:4px;gap:4px}.mode-chip{border:none;background:transparent;color:var(--text-secondary);font-size:.825rem;font-weight:500;padding:6px 14px;border-radius:var(--radius-full);cursor:pointer;display:flex;align-items:center;gap:6px;transition:all .2s ease}.mode-chip:hover{color:var(--text-primary)}.mode-chip.active{background:var(--accent-primary);color:#fff;box-shadow:0 2px 8px var(--accent-glow)}.header-actions{display:flex;align-items:center;gap:10px}.btn-icon{width:38px;height:38px;border-radius:var(--radius-full);border:1px solid var(--border-color);background:var(--bg-surface);color:var(--text-primary);display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:1.1rem;transition:all .2s ease}.btn-icon:hover{background:var(--bg-card);border-color:var(--accent-primary)}.btn-coffee{background:linear-gradient(135deg,#f59e0b,#d97706);color:#fff;border:none;border-radius:var(--radius-full);padding:8px 16px;font-size:.85rem;font-weight:600;cursor:pointer;display:flex;align-items:center;gap:6px;box-shadow:0 2px 8px #f59e0b4d;transition:transform .15s ease,box-shadow .15s ease}.btn-coffee:hover{transform:translateY(-1px);box-shadow:0 4px 12px #f59e0b66}.ad-banner-slot{width:100%;max-width:1280px;margin:12px auto 0;padding:0 24px}.ad-placeholder{background:var(--bg-surface);border:1px dashed var(--border-color);border-radius:var(--radius-md);padding:10px 18px;display:flex;align-items:center;gap:12px;font-size:.825rem;color:var(--text-secondary)}.ad-tag{background:#6366f126;color:var(--accent-primary);font-size:.65rem;font-weight:700;padding:2px 6px;border-radius:4px;letter-spacing:.05em}.studio-container{max-width:1280px;width:100%;margin:16px auto;padding:0 24px;display:grid;grid-template-columns:280px 1fr;gap:20px;flex:1}.studio-toolbar{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:18px;display:flex;flex-direction:column;gap:18px;box-shadow:var(--shadow-sm);height:fit-content}.tool-group{display:flex;flex-direction:column;gap:8px;border-bottom:1px solid var(--border-color);padding-bottom:14px}.tool-group:last-child{border-bottom:none;padding-bottom:0}.group-header{display:flex;align-items:center;justify-content:space-between}.group-label{font-size:.775rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted)}.value-badge{font-size:.75rem;font-weight:600;color:var(--accent-primary);background:#6366f11a;padding:2px 8px;border-radius:var(--radius-full)}.tool-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}.tool-btn{background:var(--bg-surface);border:1px solid var(--border-color);color:var(--text-secondary);border-radius:var(--radius-md);padding:10px;display:flex;align-items:center;justify-content:center;gap:8px;font-size:.85rem;font-weight:500;cursor:pointer;transition:all .15s ease}.tool-btn:hover{background:var(--bg-card);color:var(--text-primary)}.tool-btn.active{background:var(--accent-primary);border-color:var(--accent-primary);color:#fff;box-shadow:0 2px 8px var(--accent-glow)}.style-selector{display:grid;grid-template-columns:1fr 1fr;gap:6px}.style-chip{background:var(--bg-surface);border:1px solid var(--border-color);color:var(--text-secondary);border-radius:var(--radius-sm);padding:7px 8px;font-size:.775rem;font-weight:500;cursor:pointer;display:flex;align-items:center;gap:6px;transition:all .15s ease}.style-chip:hover{color:var(--text-primary);background:var(--bg-card)}.style-chip.active{background:#6366f126;border-color:var(--accent-primary);color:var(--accent-primary);font-weight:600}.slider-input{width:100%;accent-color:var(--accent-primary);cursor:pointer}.stroke-preview-box{height:36px;background:var(--bg-surface);border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;border:1px dashed var(--border-color)}.preview-dot{width:4px;height:4px;background:var(--text-primary);border-radius:50%;transition:width .1s ease,height .1s ease,background-color .15s ease}.color-palette{display:grid;grid-template-columns:repeat(5,1fr);gap:8px}.color-dot{width:100%;aspect-ratio:1;border-radius:var(--radius-full);border:2px solid transparent;cursor:pointer;transition:transform .15s ease,border-color .15s ease}.color-dot:hover{transform:scale(1.15)}.color-dot.active{border-color:var(--accent-primary);box-shadow:0 0 0 2px var(--bg-secondary),0 0 8px var(--accent-glow);transform:scale(1.1)}.custom-color-picker{aspect-ratio:1;border-radius:var(--radius-full);background:var(--bg-surface);border:1px solid var(--border-color);display:flex;align-items:center;justify-content:center;cursor:pointer;position:relative;overflow:hidden;font-size:1rem}.custom-color-picker input[type=color]{position:absolute;opacity:0;width:100%;height:100%;cursor:pointer}.stamp-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:6px}.stamp-btn{background:var(--bg-surface);border:1px solid var(--border-color);font-size:1.1rem;padding:6px 0;border-radius:var(--radius-sm);cursor:pointer;transition:all .15s ease}.stamp-btn:hover{background:var(--bg-card);transform:translateY(-2px);border-color:var(--accent-primary)}.action-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}.action-grid .btn-danger{grid-column:span 2}.btn-action{background:var(--bg-surface);border:1px solid var(--border-color);color:var(--text-secondary);border-radius:var(--radius-md);padding:8px 12px;font-size:.8rem;font-weight:500;display:flex;align-items:center;justify-content:center;gap:6px;cursor:pointer;transition:all .15s ease}.btn-action:hover{background:var(--bg-card);color:var(--text-primary)}.btn-action.btn-danger{background:var(--danger-bg);color:var(--danger-color);border-color:#ef444433}.btn-action.btn-danger:hover{background:var(--danger-color);color:#fff}.canvas-stage{display:flex;flex-direction:column;gap:12px}.canvas-meta-bar{display:flex;align-items:center;justify-content:space-between;padding:4px 6px}.canvas-info{display:flex;align-items:center;gap:10px;font-size:.875rem;font-weight:600}.status-indicator{width:8px;height:8px;background:var(--success-color);border-radius:50%;box-shadow:0 0 8px #10b98180}.stroke-count-badge{font-size:.75rem;font-weight:500;color:var(--text-muted);background:var(--bg-surface);padding:2px 8px;border-radius:var(--radius-full)}.canvas-options{display:flex;align-items:center;gap:14px}.toggle-option{display:flex;align-items:center;gap:6px;font-size:.8rem;color:var(--text-secondary);cursor:pointer}.toggle-option input{accent-color:var(--accent-primary);cursor:pointer}.btn-size-toggle{background:#6366f11f;border:1px solid rgba(99,102,241,.3);color:var(--accent-primary);font-size:.75rem;font-weight:600;padding:3px 8px;border-radius:var(--radius-sm);cursor:pointer;display:inline-flex;align-items:center;gap:4px;transition:all .15s ease}.btn-size-toggle:hover{background:var(--accent-primary);color:#fff}.size-popover{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);padding:14px 16px;margin-bottom:6px;display:flex;flex-direction:column;gap:10px;animation:slideDown .18s ease-out}.size-popover.hidden{display:none!important}@keyframes slideDown{0%{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:translateY(0)}}.size-popover-header{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border-color);padding-bottom:8px}.popover-title{font-size:.85rem;font-weight:700;color:var(--text-primary)}.btn-popover-close{background:none;border:none;color:var(--text-muted);font-size:1.2rem;cursor:pointer;line-height:1;padding:0 4px}.btn-popover-close:hover{color:var(--text-primary)}.size-section-label{font-size:.75rem;font-weight:600;color:var(--text-secondary);margin-bottom:4px}.size-presets-grid{display:flex;flex-wrap:wrap;gap:6px}.preset-chip{background:var(--bg-surface);border:1px solid var(--border-color);color:var(--text-secondary);font-size:.75rem;padding:5px 10px;border-radius:var(--radius-full);cursor:pointer;transition:all .15s ease}.preset-chip:hover{background:var(--bg-card);color:var(--text-primary);border-color:var(--accent-primary)}.preset-chip.active{background:var(--accent-primary);color:#fff;border-color:var(--accent-primary)}.size-custom-row{display:flex;align-items:flex-end;gap:8px}.size-input-field{display:flex;flex-direction:column;gap:4px;position:relative;flex:1}.size-input-field label{font-size:.7rem;color:var(--text-muted)}.size-input-field input{background:var(--bg-surface);border:1px solid var(--border-color);color:var(--text-primary);border-radius:var(--radius-sm);padding:6px 26px 6px 10px;font-size:.85rem;width:100%}.size-input-field input:focus{outline:none;border-color:var(--accent-primary)}.size-input-field .unit{position:absolute;right:8px;bottom:7px;font-size:.75rem;color:var(--text-muted);pointer-events:none}.size-times{color:var(--text-muted);font-weight:700;margin-bottom:8px}.btn-primary-mini{background:var(--accent-primary);color:#fff;border:none;border-radius:var(--radius-sm);padding:7px 16px;font-size:.85rem;font-weight:600;cursor:pointer;transition:background .15s ease;white-space:nowrap}.btn-primary-mini:hover{background:var(--accent-hover)}.canvas-wrapper{position:relative;width:100%;max-width:100%;aspect-ratio:800 / 380;max-height:min(72vh,600px);margin:0 auto;background-color:var(--canvas-bg);background-image:linear-gradient(45deg,var(--checker-dark) 25%,transparent 25%),linear-gradient(-45deg,var(--checker-dark) 25%,transparent 25%),linear-gradient(45deg,transparent 75%,var(--checker-dark) 75%),linear-gradient(-45deg,transparent 75%,var(--checker-dark) 75%);background-size:20px 20px;background-position:0 0,0 10px,10px -10px,-10px 0px;border:2px solid var(--canvas-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);overflow:hidden;touch-action:none;cursor:crosshair}#svg-canvas{width:100%;height:100%;display:block}.signature-baseline-overlay{position:absolute;bottom:60px;left:40px;right:40px;pointer-events:none;display:flex;flex-direction:column;gap:6px;transition:opacity .2s ease}.baseline-line{width:100%;height:1px;background:repeating-linear-gradient(to right,#94A3B8,#94A3B8 6px,transparent 6px,transparent 12px);opacity:.6}.baseline-text{font-size:.75rem;color:#94a3b8;font-weight:500;text-align:center}.drag-drop-overlay{position:absolute;top:0;right:0;bottom:0;left:0;background:#6366f1d9;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:30;opacity:0;pointer-events:none;transition:opacity .2s ease}.drag-drop-overlay.active{opacity:1;pointer-events:auto}.drag-drop-card{background:#fff;color:#0f172a;padding:24px 32px;border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);text-align:center;display:flex;flex-direction:column;align-items:center;gap:6px}.drag-drop-card .drag-icon{font-size:2.2rem}.drag-drop-card h3{font-size:1.1rem;font-weight:700}.drag-drop-card p{font-size:.8rem;color:#64748b}.btn-upload-image{cursor:pointer;background:#6366f11a;color:var(--accent-primary);border-color:#6366f14d;font-weight:600}.btn-upload-image:hover{background:var(--accent-primary);color:#fff}.image-controls-panel{background:var(--bg-surface);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:10px;margin-top:8px;display:flex;flex-direction:column;gap:8px}.image-controls-panel.hidden{display:none}.image-action-row{display:flex;align-items:center;justify-content:space-between;margin-top:4px}.toggle-option-mini{display:flex;align-items:center;gap:5px;font-size:.725rem;color:var(--text-secondary);cursor:pointer}.toggle-option-mini input{accent-color:var(--accent-primary)}.btn-remove-img{background:var(--danger-bg);color:var(--danger-color);border:1px solid rgba(239,68,68,.3);border-radius:var(--radius-sm);padding:4px 8px;font-size:.7rem;font-weight:600;cursor:pointer;transition:all .15s ease}.btn-remove-img:hover{background:var(--danger-color);color:#fff}.canvas-bottom-bar{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:14px 20px;display:flex;align-items:center;justify-content:space-between;gap:16px;box-shadow:var(--shadow-sm)}.export-summary{display:flex;align-items:center;gap:8px;font-size:.825rem;color:var(--text-secondary)}.check-icon{width:18px;height:18px;border-radius:50%;background:#10b98126;color:var(--success-color);display:flex;align-items:center;justify-content:center;font-size:.75rem;font-weight:700}.export-buttons{display:flex;align-items:center;gap:10px}.btn-primary{background:var(--accent-gradient);color:#fff;border:none;border-radius:var(--radius-md);padding:10px 18px;font-size:.9rem;font-weight:600;cursor:pointer;display:flex;align-items:center;gap:8px;white-space:nowrap;box-shadow:0 4px 12px var(--accent-glow);transition:transform .15s ease,box-shadow .15s ease}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 16px var(--accent-glow)}.btn-secondary{background:var(--bg-surface);border:1px solid var(--border-color);color:var(--text-primary);border-radius:var(--radius-md);padding:10px 16px;font-size:.85rem;font-weight:600;cursor:pointer;display:flex;align-items:center;gap:8px;white-space:nowrap;transition:all .15s ease}.btn-secondary:hover{background:var(--bg-card);border-color:var(--accent-primary)}.app-footer{margin-top:auto;background-color:var(--bg-secondary);border-top:1px solid var(--border-color);padding:36px 24px 24px}.footer-content{max-width:1280px;margin:0 auto}.footer-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin-bottom:28px}.footer-col h3{font-size:.95rem;font-weight:700;margin-bottom:10px;color:var(--text-primary)}.footer-col p{font-size:.825rem;color:var(--text-secondary);line-height:1.6}.footer-col ul{list-style:none;font-size:.825rem;color:var(--text-secondary);display:flex;flex-direction:column;gap:6px}.footer-col li b{color:var(--text-primary)}.footer-bottom{border-top:1px solid var(--border-color);padding-top:18px;text-align:center;font-size:.775rem;color:var(--text-muted)}.toast-message{position:fixed;bottom:24px;left:50%;transform:translate(-50%) translateY(100px);background:#1e293b;color:#fff;padding:12px 24px;border-radius:var(--radius-full);font-size:.875rem;font-weight:600;box-shadow:0 10px 25px #0006;border:1px solid rgba(255,255,255,.1);display:flex;align-items:center;gap:8px;pointer-events:none;transition:transform .3s cubic-bezier(.16,1,.3,1);z-index:100}.toast-message.show{transform:translate(-50%) translateY(0)}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000b3;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;z-index:1000;opacity:1;transition:opacity .25s ease}.modal-overlay.hidden{opacity:0;pointer-events:none}.modal-card{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:28px;max-width:440px;width:90%;position:relative;box-shadow:var(--shadow-lg);text-align:center}.modal-close{position:absolute;top:14px;right:14px;background:transparent;border:none;font-size:1.5rem;color:var(--text-muted);cursor:pointer}.modal-icon{font-size:2.5rem;margin-bottom:8px}.modal-header h2{font-size:1.25rem;font-weight:700;margin-bottom:8px}.modal-header p{font-size:.85rem;color:var(--text-secondary);line-height:1.5;margin-bottom:20px}.donation-options{display:flex;flex-direction:column;gap:8px;margin-bottom:20px}.donation-btn{background:var(--bg-surface);border:1px solid var(--border-color);color:var(--text-primary);border-radius:var(--radius-md);padding:12px;font-size:.9rem;font-weight:600;cursor:pointer;transition:all .15s ease}.donation-btn:hover{background:var(--accent-gradient);color:#fff;border-color:transparent}.crypto-support{border-top:1px solid var(--border-color);padding-top:14px;text-align:left}.crypto-label{font-size:.775rem;color:var(--text-muted);margin-bottom:6px}.crypto-address-box{background:var(--bg-primary);border:1px solid var(--border-color);border-radius:var(--radius-sm);padding:8px 10px;display:flex;align-items:center;justify-content:space-between;gap:8px}.crypto-address-box code{font-size:.75rem;color:var(--accent-primary);font-family:monospace;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.btn-copy-mini{background:var(--accent-primary);color:#fff;border:none;border-radius:var(--radius-sm);padding:4px 8px;font-size:.7rem;font-weight:600;cursor:pointer}@media(max-width:960px){.studio-container,.footer-grid{grid-template-columns:1fr}.header-modes{display:none}.canvas-bottom-bar{flex-direction:column;align-items:stretch}.export-buttons{flex-wrap:wrap}}