@import"https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap";:root{--color-bg: #f8f9fc;--color-bg-secondary: #ffffff;--color-bg-tertiary: #eef1f6;--color-bg-hover: #e8ecf4;--color-text: #1a1d27;--color-text-secondary: #5f6577;--color-text-muted: #9096a8;--color-border: #dde1ea;--color-border-subtle: #eef1f6;--color-accent: #6366f1;--color-accent-hover: #4f46e5;--color-accent-soft: rgba(99, 102, 241, .1);--color-accent-glow: rgba(99, 102, 241, .25);--color-success: #22c55e;--color-success-soft: rgba(34, 197, 94, .1);--color-warning: #f59e0b;--color-warning-soft: rgba(245, 158, 11, .1);--color-error: #ef4444;--color-error-soft: rgba(239, 68, 68, .1);--shadow-sm: 0 1px 2px rgba(0, 0, 0, .04);--shadow-md: 0 4px 12px rgba(0, 0, 0, .06);--shadow-lg: 0 8px 30px rgba(0, 0, 0, .08);--shadow-glow: 0 0 20px var(--color-accent-glow);--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--radius-xl: 24px;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 20px;--space-6: 24px;--space-8: 32px;--space-10: 40px;--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-mono: "JetBrains Mono", "Cascadia Code", "Fira Code", monospace;--text-xs: .75rem;--text-sm: .875rem;--text-base: 1rem;--text-lg: 1.125rem;--text-xl: 1.25rem;--text-2xl: 1.5rem;--text-3xl: 2rem;--transition-fast: .15s cubic-bezier(.4, 0, .2, 1);--transition-base: .2s cubic-bezier(.4, 0, .2, 1);--transition-slow: .35s cubic-bezier(.4, 0, .2, 1);--sidebar-width: 260px;--header-height: 56px}[data-theme=dark]{--color-bg: #0f1117;--color-bg-secondary: #181a24;--color-bg-tertiary: #1e2130;--color-bg-hover: #252838;--color-text: #e8eaf0;--color-text-secondary: #9096a8;--color-text-muted: #5f6577;--color-border: #2a2d3d;--color-border-subtle: #1e2130;--color-accent: #818cf8;--color-accent-hover: #6366f1;--color-accent-soft: rgba(129, 140, 248, .12);--color-accent-glow: rgba(129, 140, 248, .2);--shadow-sm: 0 1px 2px rgba(0, 0, 0, .2);--shadow-md: 0 4px 12px rgba(0, 0, 0, .3);--shadow-lg: 0 8px 30px rgba(0, 0, 0, .4)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-text-size-adjust:100%;scroll-behavior:smooth}body{font-family:var(--font-sans);font-size:var(--text-base);line-height:1.6;color:var(--color-text);background-color:var(--color-bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;transition:background-color var(--transition-slow),color var(--transition-slow);overflow:hidden;height:100vh}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--color-border);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--color-text-muted)}::selection{background:var(--color-accent-soft);color:var(--color-accent)}.app-layout{display:flex;height:100vh;overflow:hidden}.sidebar{width:var(--sidebar-width);height:100vh;background:var(--color-bg-secondary);border-right:1px solid var(--color-border);display:flex;flex-direction:column;flex-shrink:0;transition:transform var(--transition-slow);z-index:40}.sidebar-header{padding:var(--space-5) var(--space-5);border-bottom:1px solid var(--color-border-subtle);display:flex;align-items:center;gap:var(--space-3);height:var(--header-height)}.sidebar-logo{display:flex;align-items:center;gap:var(--space-3);text-decoration:none;color:var(--color-text)}.sidebar-logo-icon{width:32px;height:32px;background:linear-gradient(135deg,var(--color-accent),#a78bfa);border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-size:var(--text-lg);color:#fff;font-weight:700}.sidebar-logo-text{font-weight:700;font-size:var(--text-lg);background:linear-gradient(135deg,var(--color-accent),#a78bfa);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.sidebar-search{padding:var(--space-3) var(--space-4)}.sidebar-search-btn{width:100%;display:flex;align-items:center;gap:var(--space-3);padding:var(--space-2) var(--space-3);background:var(--color-bg-tertiary);border:1px solid var(--color-border);border-radius:var(--radius-md);color:var(--color-text-muted);font-size:var(--text-sm);cursor:pointer;transition:all var(--transition-fast);font-family:var(--font-sans)}.sidebar-search-btn:hover{border-color:var(--color-accent);background:var(--color-accent-soft);color:var(--color-text-secondary)}.sidebar-search-kbd{margin-left:auto;font-size:var(--text-xs);font-family:var(--font-sans);padding:1px 6px;border:1px solid var(--color-border);border-radius:4px;background:var(--color-bg);color:var(--color-text-muted)}.sidebar-nav{flex:1;overflow-y:auto;padding:var(--space-2) var(--space-3)}.sidebar-section-label{font-size:var(--text-xs);font-weight:600;color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.05em;padding:var(--space-3) var(--space-3) var(--space-2)}.sidebar-link{display:flex;align-items:center;gap:var(--space-3);padding:var(--space-2) var(--space-3);border-radius:var(--radius-sm);color:var(--color-text-secondary);text-decoration:none;font-size:var(--text-sm);font-weight:500;transition:all var(--transition-fast);position:relative}.sidebar-link:hover{background:var(--color-bg-hover);color:var(--color-text)}.sidebar-link.active{background:var(--color-accent-soft);color:var(--color-accent)}.sidebar-link.active:before{content:"";position:absolute;left:-12px;top:50%;transform:translateY(-50%);width:3px;height:20px;background:var(--color-accent);border-radius:0 2px 2px 0}.sidebar-link-icon{font-size:var(--text-lg);width:24px;text-align:center;flex-shrink:0}.sidebar-footer{padding:var(--space-3) var(--space-4);border-top:1px solid var(--color-border-subtle)}.main-content{flex:1;display:flex;flex-direction:column;overflow:hidden;min-width:0}.main-header{height:var(--header-height);padding:0 var(--space-6);display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--color-border);background:var(--color-bg-secondary);flex-shrink:0}.main-header-left{display:flex;align-items:center;gap:var(--space-4)}.main-header-title{font-size:var(--text-lg);font-weight:600}.main-header-right{display:flex;align-items:center;gap:var(--space-3)}.mobile-menu-btn{display:none;align-items:center;justify-content:center;width:36px;height:36px;border:none;background:none;color:var(--color-text);font-size:var(--text-xl);cursor:pointer;border-radius:var(--radius-sm);transition:background var(--transition-fast)}.mobile-menu-btn:hover{background:var(--color-bg-hover)}.main-body{flex:1;overflow-y:auto;padding:var(--space-6)}.tool-container{max-width:900px;margin:0 auto;width:100%}.tool-description{color:var(--color-text-secondary);font-size:var(--text-sm);margin-bottom:var(--space-6)}.tool-card{background:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm)}.tool-card-header{padding:var(--space-4) var(--space-5);border-bottom:1px solid var(--color-border-subtle);display:flex;align-items:center;justify-content:space-between}.tool-card-title{font-size:var(--text-sm);font-weight:600;color:var(--color-text-secondary);text-transform:uppercase;letter-spacing:.03em}.tool-card-body{padding:var(--space-5)}.textarea-wrapper{position:relative}textarea{width:100%;min-height:140px;padding:var(--space-4);background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-md);color:var(--color-text);font-family:var(--font-mono);font-size:var(--text-sm);line-height:1.6;resize:vertical;transition:border-color var(--transition-fast),box-shadow var(--transition-fast)}textarea:focus{outline:none;border-color:var(--color-accent);box-shadow:0 0 0 3px var(--color-accent-soft)}textarea::placeholder{color:var(--color-text-muted)}input[type=text],input[type=number],select{width:100%;padding:var(--space-2) var(--space-3);background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-sm);color:var(--color-text);font-family:var(--font-sans);font-size:var(--text-sm);transition:border-color var(--transition-fast),box-shadow var(--transition-fast)}input[type=text]:focus,input[type=number]:focus,select:focus{outline:none;border-color:var(--color-accent);box-shadow:0 0 0 3px var(--color-accent-soft)}.btn{display:inline-flex;align-items:center;gap:var(--space-2);padding:var(--space-2) var(--space-4);font-family:var(--font-sans);font-size:var(--text-sm);font-weight:500;border:none;border-radius:var(--radius-sm);cursor:pointer;transition:all var(--transition-fast);text-decoration:none;white-space:nowrap}.btn-primary{background:linear-gradient(135deg,var(--color-accent),#8b5cf6);color:#fff;box-shadow:var(--shadow-sm)}.btn-primary:hover{transform:translateY(-1px);box-shadow:var(--shadow-glow)}.btn-primary:active{transform:translateY(0)}.btn-secondary{background:var(--color-bg-tertiary);color:var(--color-text-secondary);border:1px solid var(--color-border)}.btn-secondary:hover{background:var(--color-bg-hover);color:var(--color-text)}.btn-ghost{background:transparent;color:var(--color-text-secondary)}.btn-ghost:hover{background:var(--color-bg-hover);color:var(--color-text)}.btn-icon{width:36px;height:36px;padding:0;display:inline-flex;align-items:center;justify-content:center;border-radius:var(--radius-sm);background:transparent;border:none;color:var(--color-text-secondary);cursor:pointer;font-size:var(--text-lg);transition:all var(--transition-fast)}.btn-icon:hover{background:var(--color-bg-hover);color:var(--color-text)}.tool-actions{display:flex;align-items:center;gap:var(--space-3);padding:var(--space-4) 0;flex-wrap:wrap}.tool-actions-center{justify-content:center}.mode-switcher{display:inline-flex;background:var(--color-bg-tertiary);border-radius:var(--radius-sm);padding:3px;gap:2px}.mode-btn{padding:var(--space-2) var(--space-4);font-family:var(--font-sans);font-size:var(--text-sm);font-weight:500;border:none;border-radius:4px;cursor:pointer;color:var(--color-text-secondary);background:transparent;transition:all var(--transition-fast)}.mode-btn:hover{color:var(--color-text)}.mode-btn.active{background:var(--color-bg-secondary);color:var(--color-text);box-shadow:var(--shadow-sm)}.copy-feedback{font-size:var(--text-xs);color:var(--color-success);font-weight:500;opacity:0;transition:opacity var(--transition-fast)}.copy-feedback.visible{opacity:1}.badge{display:inline-flex;align-items:center;gap:4px;padding:2px 8px;font-size:var(--text-xs);font-weight:500;border-radius:999px}.badge-success{background:var(--color-success-soft);color:var(--color-success)}.badge-error{background:var(--color-error-soft);color:var(--color-error)}.badge-warning{background:var(--color-warning-soft);color:var(--color-warning)}.divider{width:100%;height:1px;background:var(--color-border-subtle);margin:var(--space-4) 0}[data-tooltip]{position:relative}[data-tooltip]:after{content:attr(data-tooltip);position:absolute;bottom:100%;left:50%;transform:translate(-50%) translateY(-4px);padding:4px 8px;background:var(--color-text);color:var(--color-bg);font-size:var(--text-xs);font-weight:500;border-radius:4px;white-space:nowrap;opacity:0;pointer-events:none;transition:opacity var(--transition-fast)}[data-tooltip]:hover:after{opacity:1}.palette-overlay{position:fixed;inset:0;background:#00000080;backdrop-filter:blur(4px);z-index:100;display:flex;align-items:flex-start;justify-content:center;padding-top:20vh;animation:fadeIn var(--transition-fast) ease-out}.palette-container{width:100%;max-width:520px;background:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);overflow:hidden;animation:slideDown var(--transition-base) ease-out}.palette-input-wrap{display:flex;align-items:center;padding:var(--space-3) var(--space-4);border-bottom:1px solid var(--color-border);gap:var(--space-3)}.palette-input-icon{color:var(--color-text-muted);font-size:var(--text-lg);flex-shrink:0}.palette-input{flex:1;border:none;background:transparent;font-size:var(--text-base);color:var(--color-text);font-family:var(--font-sans);outline:none}.palette-input::placeholder{color:var(--color-text-muted)}.palette-results{max-height:320px;overflow-y:auto;padding:var(--space-2)}.palette-result{display:flex;align-items:center;gap:var(--space-3);padding:var(--space-3) var(--space-3);border-radius:var(--radius-sm);cursor:pointer;transition:background var(--transition-fast);text-decoration:none;color:var(--color-text)}.palette-result:hover,.palette-result.highlighted{background:var(--color-accent-soft)}.palette-result-icon{font-size:var(--text-lg);width:28px;height:28px;display:flex;align-items:center;justify-content:center;background:var(--color-bg-tertiary);border-radius:var(--radius-sm);flex-shrink:0}.palette-result-info{flex:1;min-width:0}.palette-result-name{font-weight:500;font-size:var(--text-sm)}.palette-result-desc{font-size:var(--text-xs);color:var(--color-text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.palette-empty{padding:var(--space-6);text-align:center;color:var(--color-text-muted);font-size:var(--text-sm)}.palette-footer{padding:var(--space-2) var(--space-4);border-top:1px solid var(--color-border-subtle);display:flex;align-items:center;gap:var(--space-4);font-size:var(--text-xs);color:var(--color-text-muted)}.palette-footer kbd{padding:1px 5px;border:1px solid var(--color-border);border-radius:3px;background:var(--color-bg);font-family:var(--font-sans);font-size:var(--text-xs)}.home-hero{text-align:center;padding:var(--space-10) 0 var(--space-8)}.home-hero h1{font-size:var(--text-3xl);font-weight:700;background:linear-gradient(135deg,var(--color-accent),#a78bfa,#ec4899);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:var(--space-3)}.home-hero p{color:var(--color-text-secondary);font-size:var(--text-lg);max-width:500px;margin:0 auto}.tools-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:var(--space-4);max-width:900px;margin:0 auto}.tool-grid-card{background:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--space-5);text-decoration:none;color:var(--color-text);transition:all var(--transition-base);display:flex;flex-direction:column;gap:var(--space-3)}.tool-grid-card:hover{border-color:var(--color-accent);box-shadow:var(--shadow-glow);transform:translateY(-2px)}.tool-grid-icon{width:44px;height:44px;display:flex;align-items:center;justify-content:center;background:var(--color-accent-soft);border-radius:var(--radius-md);font-size:var(--text-xl)}.tool-grid-name{font-weight:600;font-size:var(--text-base)}.tool-grid-desc{font-size:var(--text-sm);color:var(--color-text-secondary);line-height:1.5}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideDown{0%{opacity:0;transform:translateY(-12px) scale(.98)}to{opacity:1;transform:translateY(0) scale(1)}}@media(max-width:768px){.sidebar{position:fixed;left:0;top:0;transform:translate(-100%)}.sidebar.open{transform:translate(0)}.sidebar-backdrop{display:none;position:fixed;inset:0;background:#0006;z-index:35}.sidebar-backdrop.open{display:block}.mobile-menu-btn{display:flex}.main-body{padding:var(--space-4)}.home-hero{padding:var(--space-6) 0 var(--space-5)}.home-hero h1{font-size:var(--text-2xl)}.tools-grid{grid-template-columns:1fr}.palette-container{margin:0 var(--space-4)}.palette-overlay{padding-top:10vh}}@media(max-width:480px){textarea{min-height:100px}.tool-actions{flex-direction:column;align-items:stretch}.tool-actions .btn{justify-content:center}}