:root{--bg-primary: #ffffff;--bg-secondary: #f8f9fa;--bg-tertiary: #f1f3f4;--text-primary: #1d1d1d;--text-secondary: #5f6368;--text-muted: #9aa0a6;--border-color: #dadce0;--border-light: #e8eaed;--accent-primary: #FF8B8B;--accent-secondary: #FF6B6B;--accent-glow: rgba(255, 139, 139, .15);--accent-rgb: 255, 139, 139;--error: #FF8B8B;--error-bg: rgba(255, 139, 139, .1);--warning: #FFD93D;--warning-bg: rgba(255, 217, 61, .1);--success: #88D8B0;--success-bg: rgba(136, 216, 176, .1);--info: #87CEEB;--info-bg: rgba(135, 206, 235, .1);--font-display: "Space Grotesk", sans-serif;--font-mono: "JetBrains Mono", monospace;--container-max-width: 720px;--container-padding: 3rem 1.5rem;--section-gap: 1.5rem;--space-xs: .25rem;--space-sm: .5rem;--space-md: 1rem;--space-lg: 1.5rem;--space-xl: 2rem;--space-2xl: 3rem;--radius-sm: 6px;--radius-md: 8px;--radius-lg: 12px;--transition-fast: .15s cubic-bezier(.4, 0, .2, 1);--transition-medium: .3s cubic-bezier(.4, 0, .2, 1);--transition-slow: .5s cubic-bezier(.4, 0, .2, 1);--stack-gap: 1.5rem;--grid-gap: 1rem;--cluster-gap: .75rem;--sidebar-width: 280px}*{margin:0;padding:0;box-sizing:border-box}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-display);background:var(--bg-primary);color:var(--text-primary);min-height:100vh;line-height:1.6;position:relative;overflow-x:hidden}::selection{background:var(--accent-primary);color:var(--bg-primary)}::-webkit-scrollbar-track{background:var(--bg-secondary)}::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:4px}body:before{content:"";position:fixed;top:0;left:0;right:0;bottom:0;background-color:var(--bg-primary);background-image:repeating-linear-gradient(0deg,transparent,transparent 19px,rgba(var(--accent-rgb),.15) 19px,rgba(var(--accent-rgb),.15) 20px),repeating-linear-gradient(90deg,transparent,transparent 19px,rgba(var(--accent-rgb),.15) 19px,rgba(var(--accent-rgb),.15) 20px),repeating-linear-gradient(0deg,transparent,transparent 9px,rgba(var(--accent-rgb),.08) 9px,rgba(var(--accent-rgb),.08) 10px),repeating-linear-gradient(90deg,transparent,transparent 9px,rgba(var(--accent-rgb),.08) 9px,rgba(var(--accent-rgb),.08) 10px);background-size:40px 40px;opacity:.8;pointer-events:none;z-index:0}.l-container{position:relative;z-index:2;max-width:var(--container-max-width);margin:0 auto;padding:var(--container-padding);min-height:100vh;display:flex;flex-direction:column}.l-container--narrow{--container-max-width: 680px}.l-container--wide{--container-max-width: 1200px}.l-container--full{--container-max-width: 100%}.l-stack{display:flex;flex-direction:column;gap:var(--stack-gap)}.l-stack--tight{--stack-gap: .75rem}.l-stack--loose{--stack-gap: 2rem}.l-stack--extra-loose{--stack-gap: 3rem}.l-grid{display:grid;gap:var(--grid-gap)}.l-grid--2col{grid-template-columns:repeat(2,1fr)}.l-grid--3col{grid-template-columns:repeat(3,1fr)}.l-grid--4col{grid-template-columns:repeat(4,1fr)}.l-grid--sidebar{grid-template-columns:1fr var(--sidebar-width)}.l-grid--sidebar-reverse{grid-template-columns:var(--sidebar-width) 1fr}.l-grid--golden{grid-template-columns:1.618fr 1fr}.l-grid--golden-reverse{grid-template-columns:1fr 1.618fr}.l-cluster{display:flex;flex-wrap:wrap;gap:var(--cluster-gap);align-items:center}.l-cluster--between{justify-content:space-between}.l-cluster--center{justify-content:center}.l-center{display:flex;align-items:center;justify-content:center}.l-center--axis-x{display:flex;justify-content:center}.l-center--axis-y{display:flex;align-items:center}.l-with-sidebar{display:grid;grid-template-columns:1fr var(--sidebar-width);gap:2rem}.l-with-sidebar--left{grid-template-columns:var(--sidebar-width) 1fr}@media (max-width: 768px){.l-grid--2col,.l-grid--3col,.l-grid--4col,.l-grid--sidebar,.l-grid--sidebar-reverse,.l-grid--golden,.l-grid--golden-reverse,.l-with-sidebar,.l-with-sidebar--left{grid-template-columns:1fr}.l-container{padding:2rem 1rem}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes shake{0%,to{transform:translate(0)}20%{transform:translate(-4px)}40%{transform:translate(4px)}60%{transform:translate(-4px)}80%{transform:translate(4px)}}:root{--accent-primary: #AFEEEE;--accent-primary-dim: rgba(175, 238, 238, .2);--accent-secondary: #98D8E8;--accent-rgb: 175, 238, 238;--grid-line: rgba(175, 238, 238, .25);--border-focus: #AFEEEE;--border-card: #e8eaed;--shadow-glow: 0 0 20px rgba(175, 238, 238, .3);--shadow-card: 0 4px 12px rgba(0, 0, 0, .05);--radius-lg: 12px}.container{max-width:1200px;margin:0 auto;padding:var(--space-xl);position:relative;z-index:1;min-height:100vh;display:flex;flex-direction:column}.header{text-align:center;margin-bottom:var(--space-2xl);padding-bottom:var(--space-xl);border-bottom:1px solid var(--border-primary)}.header-badge{display:inline-flex;align-items:center;gap:var(--space-sm);font-family:var(--font-mono);font-size:.75rem;font-weight:500;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.1em;margin-bottom:var(--space-lg);padding:.5rem 1rem;background:var(--bg-primary);border:1px solid var(--border-primary);border-radius:var(--radius-sm)}.badge-dot{width:8px;height:8px;background:var(--accent-primary);border-radius:50%;animation:pulse 2s ease-in-out infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.header-badge a{color:var(--text-secondary);text-decoration:none;transition:color .2s}.header-badge a:hover{color:var(--accent-primary)}.title{font-family:var(--font-mono);font-size:3rem;font-weight:700;line-height:1.1;margin-bottom:var(--space-md);display:flex;flex-wrap:wrap;justify-content:center;gap:.3em;color:var(--text-primary)}.title-line{display:block}.title-line--accent{color:#7ec8c8}.subtitle{font-size:1.1rem;color:var(--text-secondary);max-width:600px;margin:0 auto}.controls-section{margin-bottom:var(--space-xl)}.controls-row{display:flex;gap:var(--space-xl);flex-wrap:wrap;justify-content:center}.toggle-group{display:flex;flex-direction:column;gap:var(--space-sm)}.toggle-label{font-family:var(--font-mono);font-size:.75rem;font-weight:500;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em}.toggle-buttons{display:flex;gap:var(--space-xs)}.toggle-btn{display:flex;align-items:center;gap:var(--space-xs);padding:var(--space-sm) var(--space-md);background:var(--bg-primary);border:1px solid var(--border-primary);border-radius:var(--radius-sm);color:var(--text-secondary);font-family:var(--font-sans);font-size:.875rem;font-weight:500;cursor:pointer;transition:all .2s}.toggle-btn:hover{background:var(--bg-card-hover);border-color:var(--border-focus);color:var(--text-primary)}.toggle-btn--active{background:var(--accent-primary-dim);border-color:var(--accent-primary);color:#5a9a9a}.toggle-btn svg{width:14px;height:14px}.controls-info{text-align:center;margin-top:var(--space-md)}.info-text{font-size:.875rem;color:var(--text-muted);font-style:italic}.info-text.hidden{display:none}.editor-section{display:grid;grid-template-columns:1fr auto 1fr;gap:var(--space-md);align-items:stretch;margin-bottom:var(--space-lg)}@media (max-width: 768px){.editor-section{grid-template-columns:1fr;gap:var(--space-md)}.swap-btn{transform:rotate(90deg);margin:var(--space-sm) auto}}.editor-panel{display:flex;flex-direction:column;background:var(--bg-card);border:1px solid var(--border-card);border-radius:var(--radius-md);overflow:hidden;box-shadow:var(--shadow-card)}.panel-header{display:flex;justify-content:space-between;align-items:center;padding:var(--space-sm) var(--space-md);background:var(--bg-tertiary);border-bottom:1px solid var(--border-card)}.panel-label{display:flex;align-items:center;gap:var(--space-xs);font-family:var(--font-mono);font-size:.8125rem;font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.02em}.panel-label svg{width:14px;height:14px}.icon-btn{display:flex;align-items:center;justify-content:center;width:32px;height:32px;background:transparent;border:1px solid var(--border-primary);border-radius:var(--radius-sm);color:var(--text-muted);cursor:pointer;transition:all .2s}.icon-btn:hover{background:var(--accent-error);border-color:var(--accent-error);color:#fff}.editor-textarea{flex:1;min-height:280px;padding:var(--space-md);background:var(--bg-input);border:none;color:var(--text-primary);font-family:var(--font-mono);font-size:.9375rem;line-height:1.6;resize:vertical;transition:all .2s}.editor-textarea::placeholder{color:var(--text-placeholder)}.editor-textarea:focus{outline:none;box-shadow:inset 0 0 0 2px var(--border-focus)}.output-textarea{background:var(--bg-secondary)}.output-textarea--error{background:#ff8b8b0d;box-shadow:inset 0 0 0 2px var(--accent-error)}.swap-btn{display:flex;align-items:center;justify-content:center;width:44px;height:44px;align-self:center;background:var(--bg-tertiary);border:1px solid var(--border-primary);border-radius:50%;color:var(--text-secondary);cursor:pointer;transition:all .2s}.swap-btn:hover{background:var(--accent-primary-dim);border-color:var(--accent-primary);color:#5a9a9a;transform:scale(1.1)}.swap-btn:active{transform:scale(.95)}.copy-btn{display:flex;align-items:center;gap:var(--space-xs);padding:var(--space-xs) var(--space-sm);background:transparent;border:1px solid var(--border-primary);border-radius:var(--radius-sm);color:var(--text-muted);font-family:var(--font-sans);font-size:.75rem;font-weight:500;cursor:pointer;transition:all .2s}.copy-btn:hover{border-color:var(--accent-primary);color:#5a9a9a}.copy-btn--copied{background:var(--accent-success);border-color:var(--accent-success);color:#fff!important;animation:copyPulse .3s ease-out}@keyframes copyPulse{0%{transform:scale(1)}50%{transform:scale(1.05)}to{transform:scale(1)}}.copy-icon{width:14px;height:14px}.error-banner{display:none;align-items:center;gap:var(--space-sm);padding:var(--space-sm) var(--space-md);background:#ff8b8b1a;border:1px solid rgba(255,139,139,.3);border-radius:var(--radius-sm);color:var(--accent-error);font-size:.875rem;animation:slideDown .3s ease-out}@keyframes slideDown{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.error-icon{flex-shrink:0}.error-banner.visible{display:flex}.footer{text-align:center;padding-top:var(--space-xl);border-top:1px solid var(--border-primary);margin-top:auto}.footer p{font-size:.875rem;color:var(--text-muted);margin-bottom:var(--space-sm)}.keyboard-shortcuts{display:flex;justify-content:center;gap:var(--space-lg);font-size:.75rem;color:var(--text-muted)}.keyboard-shortcuts span{display:flex;align-items:center;gap:var(--space-xs)}kbd{display:inline-flex;align-items:center;justify-content:center;min-width:24px;padding:var(--space-xs) var(--space-sm);background:var(--bg-tertiary);border:1px solid var(--border-primary);border-radius:var(--radius-sm);font-family:var(--font-mono);font-size:.6875rem;font-weight:600;color:var(--text-secondary)}@media (max-width: 640px){.container{padding:var(--space-md)}.title{font-size:2rem}.subtitle{font-size:1rem}.controls-row{flex-direction:column;gap:var(--space-md)}.toggle-group{align-items:center}.editor-textarea{min-height:180px}.keyboard-shortcuts{flex-direction:column;gap:var(--space-sm)}}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-secondary);border-radius:var(--radius-sm)}::-webkit-scrollbar-thumb{background:var(--border-primary);border-radius:var(--radius-sm)}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}::selection{background:var(--accent-primary);color:var(--text-primary)}.editor-textarea::selection{background:var(--accent-primary);color:var(--text-primary)}