:root{--bg-primary:#ffffff;--bg-secondary:#faf8ff;--bg-tertiary:#f5f3ff;--bg-card:#ffffff;--bg-card-hover:#faf8ff;--bg-purple-light:#f5f3ff;--bg-purple-lighter:#faf8ff;--purple-50:#faf5ff;--purple-100:#f3e8ff;--purple-200:#e9d5ff;--purple-300:#d8b4fe;--purple-400:#c084fc;--purple-500:#a855f7;--purple-600:#9333ea;--purple-700:#7e22ce;--purple-800:#6b21a8;--purple-900:#581c87;--text-primary:#1a1a2e;--text-secondary:#4a4a68;--text-muted:#7a7a98;--text-on-purple:#ffffff;--accent-primary:#9333ea;--accent-secondary:#7e22ce;--accent-gradient:linear-gradient(135deg,#9333ea,#c084fc);--accent-gradient-hover:linear-gradient(135deg,#7e22ce,#a855f7);--accent-glow:rgba(147,51,234,0.25);--border-color:#d4d4e8;--border-strong:#b8b8d0;--border-hover:#9333ea;--border-purple:rgba(147,51,234,0.3);--error:#ef4444;--success:#10b981;--warning:#f59e0b;--info:#3b82f6;--shadow-sm:0 1px 3px rgba(0,0,0,0.05),0 1px 2px rgba(0,0,0,0.03);--shadow-md:0 4px 6px -1px rgba(0,0,0,0.08),0 2px 4px -1px rgba(0,0,0,0.04);--shadow-lg:0 10px 15px -3px rgba(0,0,0,0.08),0 4px 6px -2px rgba(0,0,0,0.03);--shadow-xl:0 20px 25px -5px rgba(0,0,0,0.08),0 10px 10px -5px rgba(0,0,0,0.02);--shadow-glow:0 0 0 3px var(--accent-glow);--shadow-purple:0 10px 30px rgba(147,51,234,0.15);--radius-sm:6px;--radius-md:10px;--radius-lg:14px;--radius-xl:20px;--radius-2xl:24px;--radius-full:9999px;--transition-fast:0.15s cubic-bezier(0.4,0,0.2,1);--transition-normal:0.25s cubic-bezier(0.4,0,0.2,1);--transition-slow:0.4s cubic-bezier(0.4,0,0.2,1)}.dark-mode{--bg-primary:#0f0f1e;--bg-secondary:#1a1a2e;--bg-tertiary:#252541;--bg-card:#1a1a2e;--bg-card-hover:#252541;--text-primary:#ffffff;--text-secondary:#cbd5e1;--text-muted:#94a3b8;--border-color:rgba(255,255,255,0.1);--border-hover:rgba(255,255,255,0.15)}*{margin:0;padding:0;box-sizing:border-box}.preview-area,.result-area,.tool-card{contain:content}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe 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0;margin-bottom:10px}.header,.logo{display:flex;align-items:center}.logo{gap:12px}.logo-icon{width:44px;height:44px;border-radius:var(--radius-md);font-size:22px;box-shadow:var(--shadow-glow)}.logo-text{font-size:24px;font-weight:700;background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.header-actions{gap:12px}.theme-toggle{width:44px;height:44px;border-radius:var(--radius-md);background:var(--bg-card);border:1px solid var(--border-color);color:var(--text-primary);cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:20px;transition:var(--transition-fast)}.theme-toggle:hover{background:var(--bg-card-hover);border-color:var(--border-hover)}.nav-container{background:var(--bg-card);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px solid var(--border-color);border-radius:var(--radius-xl);padding:8px;margin-bottom:30px;overflow-x:auto;-webkit-overflow-scrolling:touch}.nav-container::-webkit-scrollbar{display:none}.nav-tabs{display:flex;gap:4px;min-width:max-content}.nav-tab{display:flex;align-items:center;gap:8px;padding:12px 20px;border-radius:var(--radius-lg);background:transparent;border:none;color:var(--text-secondary);font-size:14px;font-weight:500;cursor:pointer;transition:var(--transition-fast);white-space:nowrap}.nav-tab:hover{background:var(--bg-tertiary);color:var(--text-primary)}.nav-tab.active{background:var(--accent-gradient);color:#000;box-shadow:var(--shadow-glow)}.nav-tab-icon{font-size:18px}.tool-container{display:none;opacity:0;transform:translateY(20px) scale(.98);transition:opacity .4s cubic-bezier(.4,0,.2,1),transform .4s cubic-bezier(.4,0,.2,1)}.tool-container.active{display:block;opacity:1;transform:translateY(0) scale(1)}.tool-container.entering{display:block;opacity:0;transform:translateY(20px) 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var(--border-color);border-radius:var(--radius-xl);padding:32px;margin-bottom:20px}.tool-header{margin-bottom:24px}.tool-title{font-size:28px;font-weight:700;margin-bottom:8px;background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.tool-description{color:var(--text-secondary);font-size:15px}.form-group{margin-bottom:20px}.form-label{display:block;font-size:14px;font-weight:500;color:var(--text-secondary);margin-bottom:8px}.form-input{width:100%;padding:14px 18px;background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-md);color:var(--text-primary);font-size:15px;font-family:inherit;transition:var(--transition-fast)}.form-input:focus{outline:none;border-color:var(--accent-primary);box-shadow:0 0 0 3px 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0}.toast-container{position:fixed;bottom:24px;right:24px;z-index:1000;display:flex;flex-direction:column;gap:12px}.toast{background:var(--bg-card);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:16px 20px;display:flex;align-items:center;gap:12px;box-shadow:var(--shadow-lg);animation:slideIn .3s ease;min-width:280px}.toast.success{border-color:var(--success)}.toast.error{border-color:var(--error)}.toast-icon{font-size:20px}.toast-message{flex:1 1;font-size:14px}@keyframes slideIn{0%{opacity:0;transform:translateX(100%)}to{opacity:1;transform:translateX(0)}}.spinner{width:24px;height:24px;border:3px solid var(--border-color);border-top-color:var(--accent-primary);border-radius:50%;animation:spin .8s linear infinite}@keyframes 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