:root{--bg-void:#050508;--bg-base:#0a0a10;--bg-surface:#111118;--bg-raised:#18182400;--bg-elevated:#1e1e2c;--bg-input:#0d0d14;--bg-hover:#1a1a28;--glass-bg:#0e0e16bf;--glass-border:#ffffff0f;--glass-blur:blur(24px) saturate(1.6);--accent-50:#eef2ff;--accent-400:#818cf8;--accent-500:#6366f1;--accent-600:#4f46e5;--accent-700:#4338ca;--accent-glow:#6366f133;--accent-gradient:linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #a78bfa 100%);--accent-gradient-vivid:linear-gradient(135deg, #818cf8 0%, #a78bfa 50%, #c4b5fd 100%);--text-primary:#f1f1f6;--text-secondary:#8e8ea8;--text-tertiary:#55556a;--text-accent:var(--accent-400);--border-subtle:#ffffff0a;--border-default:#ffffff12;--border-strong:#ffffff1f;--border-accent:#6366f166;--sp-1:4px;--sp-2:8px;--sp-3:12px;--sp-4:16px;--sp-5:20px;--sp-6:24px;--sp-8:32px;--r-xs:6px;--r-sm:8px;--r-md:12px;--r-lg:16px;--r-xl:20px;--r-2xl:24px;--r-full:9999px;--shadow-sm:0 1px 3px #00000080, 0 1px 2px #0006;--shadow-md:0 4px 12px #00000080, 0 2px 4px #0006;--shadow-lg:0 8px 32px #0009, 0 4px 8px #0006;--shadow-xl:0 16px 48px #000000b3, 0 8px 16px #00000080;--shadow-glow:0 0 24px var(--accent-glow), 0 0 64px #6366f114;--shadow-canvas:0 20px 80px #000c, 0 0 0 1px #ffffff0a;--ease:cubic-bezier(.16, 1, .3, 1);--t-fast:.12s;--t-med:.2s;--t-slow:.35s}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-size:16px}body{background:var(--bg-void);color:var(--text-primary);min-height:100vh;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;overflow:hidden}button{cursor:pointer;color:inherit;background:0 0;border:none;font-family:inherit}input,textarea,select{color:inherit;background:0 0;border:none;outline:none;font-family:inherit}img{max-width:100%;display:block}#app{flex-direction:column;height:100vh;display:flex;overflow:hidden}.nav{height:52px;padding:0 var(--sp-5);background:var(--glass-bg);-webkit-backdrop-filter:var(--glass-blur);border-bottom:1px solid var(--glass-border);z-index:100;flex-shrink:0;justify-content:space-between;align-items:center;display:flex;position:relative}.nav:before{content:"";background:var(--accent-gradient);opacity:.7;height:2px;position:absolute;top:0;left:0;right:0}.nav-brand{align-items:center;gap:var(--sp-2);display:flex}.nav-logo{background:var(--accent-gradient);border-radius:var(--r-sm);color:#fff;letter-spacing:-.5px;width:28px;height:28px;box-shadow:0 2px 8px var(--accent-glow);place-items:center;font-size:11px;font-weight:800;display:grid}.nav-title{letter-spacing:-.4px;font-size:15px;font-weight:700}.nav-title span{background:var(--accent-gradient-vivid);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text}.nav-actions{gap:var(--sp-2);display:flex}.workspace{flex:1;grid-template-columns:280px 1fr;gap:0;display:grid;overflow:hidden}@media (width<=860px){.workspace{grid-template-columns:1fr}.sidebar{max-height:40vh}}.sidebar{background:var(--bg-base);border-right:1px solid var(--border-subtle);flex-direction:column;display:flex;position:relative;overflow:hidden auto}.sidebar::-webkit-scrollbar{width:4px}.sidebar::-webkit-scrollbar-track{background:0 0}.sidebar::-webkit-scrollbar-thumb{background:var(--border-default);border-radius:var(--r-full)}.sidebar::-webkit-scrollbar-thumb:hover{background:var(--border-strong)}.panel{border-bottom:1px solid var(--border-subtle)}.panel-header{padding:var(--sp-3) var(--sp-4);text-transform:uppercase;letter-spacing:.8px;color:var(--text-secondary);cursor:pointer;-webkit-user-select:none;user-select:none;transition:color var(--t-fast), background var(--t-fast);align-items:center;gap:6px;font-size:11px;font-weight:600;display:flex}.panel-header:hover{color:var(--text-primary);background:#ffffff05}.panel-header .icon{font-size:13px}.panel-header .chevron{transition:transform var(--t-med) var(--ease);color:var(--text-tertiary);margin-left:auto;font-size:10px}.panel-header.collapsed .chevron{transform:rotate(-90deg)}.panel-body{padding:var(--sp-2) var(--sp-4) var(--sp-4);gap:var(--sp-3);animation:panelIn var(--t-slow) var(--ease);flex-direction:column;display:flex}.panel-body.collapsed{display:none}@keyframes panelIn{0%{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:translateY(0)}}.form-group{gap:var(--sp-1);flex-direction:column;display:flex}.form-label{color:var(--text-tertiary);letter-spacing:.6px;text-transform:uppercase;font-size:10px;font-weight:600}.form-input{background:var(--bg-input);border:1px solid var(--border-default);border-radius:var(--r-sm);color:var(--text-primary);transition:border-color var(--t-fast), box-shadow var(--t-fast), background var(--t-fast);padding:8px 10px;font-size:13px}.form-input:hover{border-color:var(--border-strong)}.form-input:focus{border-color:var(--accent-500);box-shadow:0 0 0 3px var(--accent-glow);background:var(--bg-surface)}.form-input::placeholder{color:var(--text-tertiary)}.form-select{background:var(--bg-input);border:1px solid var(--border-default);border-radius:var(--r-sm);color:var(--text-primary);cursor:pointer;transition:border-color var(--t-fast), box-shadow var(--t-fast);appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%238e8ea8' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");background-position:right 10px center;background-repeat:no-repeat;padding:8px 28px 8px 10px;font-size:12px;font-weight:500}.form-select:hover{border-color:var(--border-strong)}.form-select:focus{border-color:var(--accent-500);box-shadow:0 0 0 3px var(--accent-glow);outline:none}.form-select option{background:var(--bg-surface);color:var(--text-primary);padding:4px 8px}.form-divider{background:var(--border-subtle);height:1px;margin:var(--sp-1) 0}.hidden{display:none!important}.slide-badge{letter-spacing:.8px;text-transform:uppercase;color:var(--accent-400);border-radius:var(--r-full);text-align:center;background:#6366f114;border:1px solid #6366f126;padding:5px 12px;font-size:10px;font-weight:700}.color-picker-group{align-items:center;gap:var(--sp-2);display:flex}.color-swatch{border-radius:var(--r-sm);border:2px solid var(--border-default);cursor:pointer;width:32px;height:32px;transition:border-color var(--t-fast), transform var(--t-fast);box-shadow:var(--shadow-sm);flex-shrink:0;overflow:hidden}.color-swatch:hover{border-color:var(--border-strong);transform:scale(1.05)}.color-swatch input[type=color]{cursor:pointer;border:none;width:44px;height:44px;margin:-6px;padding:0}.gradient-presets{flex-wrap:wrap;gap:6px;display:flex}.gradient-preset{border-radius:var(--r-sm);cursor:pointer;width:32px;height:32px;transition:all var(--t-fast) var(--ease);box-shadow:var(--shadow-sm);border:2px solid #0000;position:relative}.gradient-preset:hover{box-shadow:var(--shadow-md);z-index:1;transform:scale(1.15)}.gradient-preset.active{box-shadow:0 0 0 2px var(--accent-glow), var(--shadow-md);border-color:#fff;transform:scale(1.1)}.device-grid{grid-template-columns:repeat(auto-fill,minmax(72px,1fr));gap:4px;display:grid}.device-btn{background:var(--bg-input);border:1px solid var(--border-default);border-radius:var(--r-sm);text-align:center;color:var(--text-secondary);transition:all var(--t-fast) var(--ease);letter-spacing:.2px;flex-direction:column;align-items:center;gap:1px;padding:6px 2px;font-size:9px;font-weight:600;display:flex}.device-btn .device-icon{font-size:14px;line-height:1}.device-btn:hover{background:var(--bg-hover);border-color:var(--border-strong);color:var(--text-primary);transform:translateY(-1px)}.device-btn.active{background:var(--accent-gradient);color:#fff;box-shadow:var(--shadow-glow);border-color:#0000;transform:translateY(-1px)}.template-grid{grid-template-columns:repeat(3,1fr);gap:6px;display:grid}.template-card{background:var(--bg-input);border:1px solid var(--border-default);border-radius:var(--r-md);text-align:center;transition:all var(--t-med) var(--ease);flex-direction:column;align-items:center;gap:4px;padding:10px 4px 8px;display:flex;position:relative;overflow:hidden}.template-card:before{content:"";background:var(--accent-gradient);opacity:0;transition:opacity var(--t-med);border-radius:inherit;position:absolute;inset:0}.template-card:hover{border-color:var(--border-accent);box-shadow:var(--shadow-lg), var(--shadow-glow);transform:translateY(-3px)}.template-card:hover:before{opacity:.08}.template-icon{filter:grayscale(.2);transition:filter var(--t-fast), transform var(--t-fast);font-size:20px;position:relative}.template-card:hover .template-icon{filter:grayscale(0);transform:scale(1.15)}.template-name{color:var(--text-tertiary);letter-spacing:.3px;text-transform:uppercase;transition:color var(--t-fast);font-size:9px;font-weight:700;position:relative}.template-card:hover .template-name{color:var(--text-primary)}.tab-bar{background:var(--bg-input);border-radius:var(--r-sm);border:1px solid var(--border-subtle);gap:2px;padding:3px;display:flex}.tab-btn{border-radius:var(--r-xs);color:var(--text-tertiary);text-align:center;transition:all var(--t-fast) var(--ease);letter-spacing:.2px;flex:1;padding:6px 8px;font-size:11px;font-weight:600}.tab-btn:hover{color:var(--text-secondary);background:#ffffff08}.tab-btn.active{background:var(--bg-elevated);color:var(--text-primary);box-shadow:var(--shadow-sm)}.toggle-row{justify-content:space-between;align-items:center;display:flex}.toggle-label{color:var(--text-secondary);font-size:13px;font-weight:500}.toggle{background:var(--bg-elevated);border-radius:var(--r-full);cursor:pointer;width:38px;height:20px;transition:background var(--t-med) var(--ease);border:1px solid var(--border-default);position:relative}.toggle.on{background:var(--accent-500);border-color:var(--accent-600);box-shadow:0 0 12px var(--accent-glow)}.toggle:after{content:"";background:var(--text-secondary);width:14px;height:14px;transition:transform var(--t-med) var(--ease), background var(--t-fast);box-shadow:var(--shadow-sm);border-radius:50%;position:absolute;top:2px;left:2px}.toggle.on:after{background:#fff;transform:translate(18px)}.range-row{align-items:center;gap:var(--sp-2);display:flex}.range-row input[type=range]{appearance:none;background:var(--bg-elevated);border-radius:var(--r-full);outline:none;flex:1;height:4px}.range-row input[type=range]::-webkit-slider-thumb{appearance:none;background:var(--accent-gradient-vivid);cursor:pointer;width:14px;height:14px;box-shadow:0 0 8px var(--accent-glow), var(--shadow-sm);transition:transform var(--t-fast) var(--ease), box-shadow var(--t-fast);border:2px solid #fff;border-radius:50%}.range-row input[type=range]::-webkit-slider-thumb:hover{box-shadow:0 0 14px var(--accent-glow), var(--shadow-md);transform:scale(1.2)}.range-row input[type=range]:active::-webkit-slider-thumb{transform:scale(1.1)}.range-value{color:var(--text-tertiary);text-align:right;font-variant-numeric:tabular-nums;min-width:28px;font-size:10px;font-weight:700}.upload-area{border:1.5px dashed var(--border-default);border-radius:var(--r-md);padding:14px var(--sp-3);text-align:center;cursor:pointer;transition:all var(--t-med) var(--ease);position:relative;overflow:hidden}.upload-area:before{content:"";background:var(--accent-gradient);opacity:0;transition:opacity var(--t-med);position:absolute;inset:0}.upload-area:hover{border-color:var(--accent-500);transform:scale(1.01)}.upload-area:hover:before{opacity:.04}.upload-area.drag-over{border-color:var(--accent-400);box-shadow:var(--shadow-glow);transform:scale(1.02)}.upload-area.drag-over:before{opacity:.08}.upload-icon{opacity:.4;margin-bottom:2px;font-size:24px;position:relative}.upload-text{color:var(--text-secondary);font-size:11px;line-height:1.5;position:relative}.upload-text strong{color:var(--accent-400);font-weight:600}.canvas-area{background:var(--bg-void);flex-direction:column;display:flex;position:relative;overflow:hidden}.canvas-area:before{content:"";pointer-events:none;z-index:0;background-image:radial-gradient(circle at 1px 1px,#ffffff08 1px,#0000 0);background-size:24px 24px;position:absolute;inset:0}.canvas-toolbar{align-items:center;gap:var(--sp-2);padding:6px var(--sp-4);background:var(--glass-bg);-webkit-backdrop-filter:var(--glass-blur);border-bottom:1px solid var(--glass-border);z-index:10;flex-shrink:0;display:flex;position:relative}.canvas-toolbar .separator{background:var(--border-default);width:1px;height:18px;margin:0 var(--sp-1)}.toolbar-btn{border-radius:var(--r-xs);color:var(--text-secondary);transition:all var(--t-fast) var(--ease);letter-spacing:.1px;white-space:nowrap;align-items:center;gap:4px;padding:6px 11px;font-size:11px;font-weight:600;display:inline-flex}.toolbar-btn:hover{color:var(--text-primary);background:#ffffff0d}.toolbar-btn.primary{background:var(--accent-gradient);color:#fff;box-shadow:var(--shadow-sm)}.toolbar-btn.primary:hover{box-shadow:var(--shadow-glow), var(--shadow-md);filter:brightness(1.1);transform:translateY(-1px)}.toolbar-btn.primary:active{filter:brightness(.95);transform:translateY(0)}.toolbar-btn.danger{color:#f87171}.toolbar-btn.danger:hover{background:#f8717114}.toolbar-info{color:var(--text-tertiary);font-variant-numeric:tabular-nums;letter-spacing:.5px;margin-left:auto;font-size:10px;font-weight:600}.preview-container{z-index:1;flex:1;justify-content:center;align-items:center;min-height:0;display:flex;position:relative;overflow:hidden}.preview-container.drag-hover{outline:2px dashed var(--accent-400);outline-offset:-4px}.preview-canvas-wrapper{justify-content:center;align-items:center;display:flex;position:relative}.preview-canvas-wrapper:before{content:"";background:radial-gradient(ellipse at center, var(--accent-glow), transparent 70%);opacity:.4;pointer-events:none;transition:opacity var(--t-slow);z-index:-1;position:absolute;inset:-20%}.preview-canvas-wrapper:hover:before{opacity:.6}#preview-canvas{border-radius:var(--r-lg);box-shadow:var(--shadow-canvas);cursor:grab;transition:box-shadow var(--t-med), transform var(--t-med) var(--ease);max-height:calc(100vh - 200px)}#preview-canvas:hover{box-shadow:var(--shadow-canvas), var(--shadow-glow)}#preview-canvas:active{cursor:grabbing;transform:scale(.995)}.canvas-cursor-hint{bottom:var(--sp-4);color:var(--text-tertiary);border-radius:var(--r-full);-webkit-backdrop-filter:blur(12px);pointer-events:none;opacity:1;transition:opacity var(--t-med);letter-spacing:.3px;border:1px solid var(--glass-border);z-index:10;background:#000000b3;padding:4px 14px;font-size:10px;font-weight:600;position:absolute;left:50%;transform:translate(-50%)}.canvas-cursor-hint.hidden{opacity:0}.preview-empty{justify-content:center;align-items:center;gap:var(--sp-4);padding:var(--sp-8);color:var(--text-tertiary);text-align:center;flex-direction:column;display:flex;position:absolute}.preview-empty .icon{opacity:.15;font-size:44px;animation:3s ease-in-out infinite emptyPulse}@keyframes emptyPulse{0%,to{opacity:.15;transform:scale(1)}50%{opacity:.25;transform:scale(1.08)}}.preview-empty h3{color:var(--text-secondary);letter-spacing:-.3px;font-size:16px;font-weight:700}.preview-empty p{max-width:260px;font-size:12px;line-height:1.6}.filmstrip-container{align-items:flex-end;gap:var(--sp-3);padding:var(--sp-3) var(--sp-4);background:var(--bg-base);border-top:1px solid var(--border-subtle);z-index:10;flex-shrink:0;min-height:60px;display:flex;overflow:auto hidden}.filmstrip-container::-webkit-scrollbar{height:3px}.filmstrip-container::-webkit-scrollbar-track{background:0 0}.filmstrip-container::-webkit-scrollbar-thumb{background:var(--border-default);border-radius:var(--r-full)}.filmstrip{gap:var(--sp-3);flex:1;align-items:flex-end;min-width:0;display:flex}.filmstrip-placeholder{color:var(--text-tertiary);white-space:nowrap;letter-spacing:.2px;padding:4px 0;font-size:11px;font-weight:500}.filmstrip-thumb{border-radius:var(--r-md);border:2px solid var(--border-default);cursor:pointer;transition:all var(--t-med) var(--ease);background:var(--bg-surface);flex-direction:column;flex-shrink:0;display:flex;position:relative;overflow:hidden}.filmstrip-thumb canvas{pointer-events:none;display:block}.filmstrip-thumb:hover{border-color:var(--border-strong);box-shadow:var(--shadow-lg);transform:translateY(-4px)scale(1.02)}.filmstrip-thumb.active{border-color:var(--accent-400);box-shadow:0 0 0 3px var(--accent-glow), var(--shadow-lg);transform:translateY(-3px)}.filmstrip-badge{color:#fff;border-radius:var(--r-xs);-webkit-backdrop-filter:blur(6px);letter-spacing:-.2px;background:#000000bf;place-items:center;width:18px;height:18px;font-size:9px;font-weight:800;display:grid;position:absolute;top:4px;left:4px}.filmstrip-label{color:var(--text-tertiary);text-align:center;text-overflow:ellipsis;white-space:nowrap;letter-spacing:.2px;background:var(--bg-surface);max-width:100%;padding:3px 4px 2px;font-size:9px;font-weight:600;overflow:hidden}.filmstrip-thumb.active .filmstrip-label{color:var(--accent-400)}.filmstrip-add{border-radius:var(--r-md);border:1.5px dashed var(--border-default);width:48px;height:88px;color:var(--text-tertiary);transition:all var(--t-med) var(--ease);flex-shrink:0;align-self:flex-start;place-items:center;font-size:22px;font-weight:300;display:grid}.filmstrip-add:hover{border-color:var(--accent-400);color:var(--accent-400);background:#6366f10d;transform:scale(1.05)}.modal-overlay{-webkit-backdrop-filter:blur(12px);z-index:1000;opacity:0;pointer-events:none;transition:opacity var(--t-med) var(--ease);background:#000c;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.modal-overlay.visible{opacity:1;pointer-events:auto}.modal{background:var(--bg-surface);border:1px solid var(--border-default);border-radius:var(--r-xl);width:90%;max-width:400px;padding:var(--sp-6);box-shadow:var(--shadow-xl);transition:transform var(--t-slow) var(--ease);transform:translateY(20px)scale(.96)}.modal-overlay.visible .modal{transform:translateY(0)scale(1)}.modal h2{margin-bottom:var(--sp-3);letter-spacing:-.3px;font-size:17px;font-weight:700}.modal-footer{justify-content:flex-end;gap:var(--sp-2);margin-top:var(--sp-5);display:flex}.btn{border-radius:var(--r-sm);transition:all var(--t-fast) var(--ease);letter-spacing:.1px;align-items:center;gap:6px;padding:8px 16px;font-size:12px;font-weight:600;display:inline-flex}.btn-primary{background:var(--accent-gradient);color:#fff;box-shadow:var(--shadow-sm)}.btn-primary:hover{box-shadow:var(--shadow-glow), var(--shadow-md);transform:translateY(-1px)}.btn-secondary{background:var(--bg-elevated);color:var(--text-secondary);border:1px solid var(--border-default)}.btn-secondary:hover{background:var(--bg-hover);color:var(--text-primary);border-color:var(--border-strong)}.progress-bar{background:var(--bg-input);border-radius:var(--r-full);width:100%;height:3px;margin-top:var(--sp-3);overflow:hidden}.progress-fill{background:var(--accent-gradient);border-radius:var(--r-full);height:100%;transition:width var(--t-med) var(--ease)}.toast-container{bottom:var(--sp-6);right:var(--sp-6);z-index:2000;gap:var(--sp-2);flex-direction:column;display:flex;position:fixed}.toast{background:var(--bg-surface);border:1px solid var(--border-default);border-radius:var(--r-md);box-shadow:var(--shadow-xl);align-items:center;gap:var(--sp-2);animation:toastIn var(--t-slow) var(--ease);-webkit-backdrop-filter:blur(20px);max-width:340px;padding:8px 14px;font-size:12px;font-weight:500;display:flex}.toast.success{border-left:3px solid #4ade80}.toast.error{border-left:3px solid #f87171}.toast.info{border-left:3px solid var(--accent-400)}@keyframes toastIn{0%{opacity:0;transform:translate(100%)scale(.95)}to{opacity:1;transform:translate(0)scale(1)}}