:root{--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;--color-primary: #2563eb;--color-primary-hover: #1d4ed8;--color-primary-light: #eff6ff;--color-primary-border: #bfdbfe;--color-accent: #059669;--color-accent-hover: #047857;--color-bg-base: #f8fafc;--color-bg-surface: #ffffff;--color-bg-subtle: #f1f5f9;--color-bg-muted: #e2e8f0;--color-text-main: #0f172a;--color-text-muted: #475569;--color-text-subtle: #94a3b8;--color-text-inverse: #ffffff;--color-border: #e2e8f0;--color-border-hover: #cbd5e1;--color-danger: #dc2626;--color-danger-light: #fef2f2;--color-success: #16a34a;--color-warning: #d97706;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--radius-full: 9999px;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1);--shadow-xl: 0 20px 25px -5px rgb(0 0 0 / .1), 0 8px 10px -6px rgb(0 0 0 / .1);--transition-fast: .15s ease;--transition-normal: .25s ease}@media(prefers-color-scheme:dark){:root{--color-bg-base: #090d16;--color-bg-surface: #111827;--color-bg-subtle: #1f2937;--color-bg-muted: #374151;--color-text-main: #f8fafc;--color-text-muted: #94a3b8;--color-text-subtle: #64748b;--color-border: #1f2937;--color-border-hover: #374151;--color-primary-light: #1e293b;--color-primary-border: #1d4ed8}}*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}body{font-family:var(--font-sans);background-color:var(--color-bg-base);color:var(--color-text-main);line-height:1.5;min-height:100vh;display:flex;flex-direction:column;-webkit-font-smoothing:antialiased}#app{display:flex;flex-direction:column;min-height:100vh}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 1.5rem}.main-content{flex:1;padding:1.5rem 0 3rem}.site-header{background-color:var(--color-bg-surface);border-bottom:1px solid var(--color-border);position:sticky;top:0;z-index:40;backdrop-filter:blur(8px)}.header-inner{display:flex;align-items:center;justify-content:space-between;height:3.75rem}.brand-link{display:flex;align-items:center;gap:.65rem;text-decoration:none;color:var(--color-text-main);font-weight:700;font-size:1.15rem;white-space:nowrap}.brand-badge{background:var(--color-primary-light);color:var(--color-primary);font-size:.72rem;font-weight:600;padding:.15rem .45rem;border-radius:var(--radius-full);border:1px solid var(--color-primary-border)}.nav-links{display:flex;align-items:center;gap:1.25rem}.nav-link{text-decoration:none;color:var(--color-text-muted);font-size:.95rem;font-weight:500;transition:color var(--transition-fast)}.nav-link:hover,.nav-link.active{color:var(--color-primary)}.bottom-nav-bar{display:none;position:fixed;bottom:0;left:0;right:0;height:3.75rem;background-color:var(--color-bg-surface);border-top:1px solid var(--color-border);z-index:50;justify-content:space-around;align-items:center;padding-bottom:env(safe-area-inset-bottom,0px);backdrop-filter:blur(12px);box-shadow:0 -4px 12px #0000000d}.bottom-nav-item{display:flex;flex-direction:column;align-items:center;justify-content:center;text-decoration:none;color:var(--color-text-subtle);font-size:.7rem;font-weight:600;flex:1;height:100%;gap:.2rem;transition:color var(--transition-fast),transform var(--transition-fast);user-select:none}.bottom-nav-item:active{transform:scale(.94)}.bottom-nav-item.active{color:var(--color-primary)}.bottom-nav-icon{display:flex;align-items:center;justify-content:center}@media(max-width:768px){.desktop-nav{display:none!important}.bottom-nav-bar{display:flex}.container{padding:0 1rem}.main-content{padding-bottom:calc(4.5rem + env(safe-area-inset-bottom,0px))}.site-footer{padding-bottom:calc(4.5rem + env(safe-area-inset-bottom,0px))!important}}@media(max-width:480px){.brand-badge{display:none}}.site-footer{background-color:var(--color-bg-surface);border-top:1px solid var(--color-border);padding:3rem 0 2rem;margin-top:auto}.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:2rem;margin-bottom:2rem}.footer-heading{font-size:.9rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:var(--color-text-subtle);margin-bottom:.75rem}.footer-list{list-style:none;display:flex;flex-direction:column;gap:.5rem}.footer-link{color:var(--color-text-muted);text-decoration:none;font-size:.9rem;transition:color var(--transition-fast)}.footer-link:hover{color:var(--color-primary)}.footer-bottom{border-top:1px solid var(--color-border);padding-top:1.5rem;display:flex;align-items:center;justify-content:space-between;font-size:.85rem;color:var(--color-text-subtle);flex-wrap:wrap;gap:1rem}.hidden{display:none!important}.mobile-only-btn{display:none}@media(max-width:768px){.mobile-only-btn{display:inline-flex}}.loader-spinner{width:44px;height:44px;border:4px solid var(--color-border);border-top-color:var(--color-primary);border-radius:50%;animation:spinnerRotate .75s linear infinite}@keyframes spinnerRotate{to{transform:rotate(360deg)}}.loader-spinner-sm{width:14px;height:14px;border:2px solid rgba(255,255,255,.35);border-top-color:#fff;border-radius:50%;animation:spinnerRotate .75s linear infinite;display:inline-block;flex-shrink:0}.btn-loading{pointer-events:none!important;opacity:.85!important;position:relative}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.65rem 1.25rem;border-radius:var(--radius-md);font-size:.95rem;font-weight:600;cursor:pointer;border:1px solid transparent;transition:all var(--transition-fast);text-decoration:none;font-family:inherit;min-height:42px}.btn:active{transform:scale(.98)}.btn-primary{background-color:var(--color-primary);color:var(--color-text-inverse)}.btn-primary:hover{background-color:var(--color-primary-hover)}.btn-secondary{background-color:var(--color-bg-surface);color:var(--color-text-main);border-color:var(--color-border)}.btn-secondary:hover{background-color:var(--color-bg-subtle);border-color:var(--color-border-hover)}.btn-sm{padding:.4rem .75rem;font-size:.85rem;min-height:36px}.btn-lg{padding:.85rem 1.75rem;font-size:1.05rem;min-height:48px}.tool-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:1.25rem;margin-top:1.75rem}.tool-card{background:var(--color-bg-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:1.5rem;display:flex;flex-direction:column;text-decoration:none;color:inherit;box-shadow:var(--shadow-sm);transition:transform var(--transition-fast),box-shadow var(--transition-fast),border-color var(--transition-fast)}.tool-card:active{transform:scale(.98)}.tool-card:hover{box-shadow:var(--shadow-md);border-color:var(--color-primary-border)}.tool-card-icon{width:3rem;height:3rem;border-radius:var(--radius-md);background:var(--color-primary-light);color:var(--color-primary);display:flex;align-items:center;justify-content:center;margin-bottom:1rem}.tool-card-title{font-size:1.15rem;font-weight:700;margin-bottom:.4rem;color:var(--color-text-main)}.tool-card-desc{font-size:.9rem;color:var(--color-text-muted);line-height:1.5;margin-bottom:1rem;flex:1}.tool-card-meta{display:flex;align-items:center;justify-content:space-between;font-size:.85rem;font-weight:600;color:var(--color-primary)}.tag-badge{background:var(--color-bg-subtle);color:var(--color-text-muted);font-size:.75rem;padding:.2rem .6rem;border-radius:var(--radius-full)}.dropzone{border:2px dashed var(--color-border-hover);background-color:var(--color-bg-surface);border-radius:var(--radius-lg);padding:3rem 1.5rem;text-align:center;cursor:pointer;transition:all var(--transition-fast);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.85rem}.dropzone:active{background-color:var(--color-primary-light)}.dropzone:hover,.dropzone.dragover{border-color:var(--color-primary);background-color:var(--color-primary-light)}.dropzone-icon{width:3.5rem;height:3.5rem;color:var(--color-primary)}.toast-container{position:fixed;bottom:1.5rem;right:1.5rem;display:flex;flex-direction:column;gap:.75rem;z-index:9999;pointer-events:none}@media(max-width:768px){.toast-container{bottom:calc(4.25rem + env(safe-area-inset-bottom,0px));right:1rem;left:1rem;align-items:center}.dropzone{padding:2.25rem 1rem}}.toast{background:var(--color-bg-surface);color:var(--color-text-main);border:1px solid var(--color-border);box-shadow:var(--shadow-lg);padding:.85rem 1.25rem;border-radius:var(--radius-md);font-size:.9rem;font-weight:500;display:flex;align-items:center;gap:.75rem;pointer-events:auto;animation:toastIn .2s ease-out}.toast.toast-error{border-left:4px solid var(--color-danger)}.toast.toast-success{border-left:4px solid var(--color-success)}.toast.toast-info{border-left:4px solid var(--color-primary)}@keyframes toastIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.tool-workspace{display:grid;grid-template-columns:360px 1fr;gap:2rem;align-items:start}.tool-sidebar{background:var(--color-bg-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:1.5rem;display:flex;flex-direction:column;gap:1.5rem;box-shadow:var(--shadow-sm)}.tool-preview-area{background:var(--color-bg-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:1.5rem;min-height:520px;display:flex;flex-direction:column;box-shadow:var(--shadow-sm)}.panel-title{font-size:1.1rem;font-weight:700;display:flex;align-items:center;justify-content:space-between}.control-group{display:flex;flex-direction:column;gap:.5rem}.control-label{font-size:.85rem;font-weight:600;color:var(--color-text-muted);display:flex;justify-content:space-between}.control-input,.control-select{width:100%;padding:.6rem .85rem;border-radius:var(--radius-md);border:1px solid var(--color-border);background:var(--color-bg-base);color:var(--color-text-main);font-family:inherit;font-size:.95rem}.control-input:focus,.control-select:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px var(--color-primary-light)}.control-row{display:grid;grid-template-columns:1fr 1fr;gap:.75rem}.slider-input{accent-color:var(--color-primary);cursor:pointer;width:100%}.checkbox-label{display:flex;align-items:center;gap:.6rem;font-size:.9rem;font-weight:500;cursor:pointer;user-select:none;min-height:32px}.preview-tabs{display:flex;gap:.5rem;border-bottom:1px solid var(--color-border);padding-bottom:.75rem;margin-bottom:1rem}.preview-tab-btn{padding:.5rem .9rem;font-size:.85rem;font-weight:600;border-radius:var(--radius-sm);background:transparent;border:none;color:var(--color-text-muted);cursor:pointer;min-height:38px}.preview-tab-btn.active{background:var(--color-primary-light);color:var(--color-primary)}.preview-canvas-wrapper{flex:1;background:var(--color-bg-subtle);border-radius:var(--radius-md);padding:1.5rem;display:flex;align-items:center;justify-content:center;overflow:auto;position:relative;min-height:400px}#previewCanvas{max-width:100%;max-height:520px;object-fit:contain;background:#fff;box-shadow:var(--shadow-md);border-radius:var(--radius-sm)}.info-chip-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(100px,1fr));gap:.5rem;margin-top:1rem}.info-chip{background:var(--color-bg-base);border:1px solid var(--color-border);border-radius:var(--radius-sm);padding:.5rem;text-align:center}.info-chip-label{font-size:.75rem;color:var(--color-text-subtle);text-transform:uppercase}.info-chip-val{font-size:.95rem;font-weight:700;color:var(--color-text-main)}@media(max-width:900px){.tool-workspace{display:flex!important;flex-direction:column!important;gap:1.25rem!important}.tool-preview-area{order:1!important;padding:1rem;min-height:280px;width:100%}.tool-sidebar{order:2!important;padding:1.15rem;gap:1.15rem;width:100%}.preview-canvas-wrapper{padding:.75rem;min-height:240px}.control-input,.control-select{font-size:16px;padding:.65rem .85rem}.slider-input{height:28px}.control-row{gap:.5rem}}