: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}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 slideIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes slideDown{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}:root{--accent-primary: #87CEEB;--accent-secondary: #6BB6FF;--accent-glow: rgba(135, 206, 235, .2);--accent-rgb: 135, 206, 235;--grid-line: rgba(135, 206, 235, .25);--warning: #FFD93D}.container{position:relative;z-index:1;max-width:1200px;margin:0 auto;padding:3rem 1.5rem;min-height:100vh;display:flex;flex-direction:column}.header{margin-bottom:2rem}.header-badge{display:inline-flex;align-items:center;gap:.5rem;font-size:.75rem;font-weight:500;letter-spacing:.1em;color:var(--text-secondary);margin-bottom:1.5rem;font-family:var(--font-mono);text-transform:uppercase;padding:.5rem 1rem;background:var(--bg-primary);border:1px solid var(--border-color);border-radius:6px}.header-badge a{color:var(--accent-primary);text-decoration:none;transition:opacity var(--transition-fast)}.header-badge a:hover{opacity:.8}.badge-dot{width:6px;height:6px;background:var(--accent-primary);border-radius:50%;animation:pulse 2s ease-in-out infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.title{font-family:var(--font-display);font-size:clamp(2rem,5vw,3.5rem);font-weight:700;line-height:1.1;margin-bottom:1rem;color:var(--text-primary)}.title-line{display:block}.title-line--accent{color:var(--accent-primary)}.subtitle{font-size:1rem;color:var(--text-secondary);max-width:600px;line-height:1.6}.toolbar{display:flex;align-items:center;justify-content:space-between;gap:1rem;margin-bottom:1rem;padding:.75rem 1rem;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:12px}.indent-selector{display:flex;align-items:center;gap:.75rem}.indent-selector label{font-size:.75rem;color:var(--text-secondary);font-family:var(--font-mono);text-transform:uppercase;letter-spacing:.1em}.indent-selector select{background:var(--bg-primary);border:1px solid var(--border-color);border-radius:6px;padding:.5rem 2rem .5rem .75rem;color:var(--text-primary);font-family:var(--font-mono);font-size:.8125rem;cursor:pointer;transition:all var(--transition-fast);-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2387CEEB' d='M6 8L1 3h10z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right .5rem center}.indent-selector select:hover,.indent-selector select:focus{border-color:var(--accent-primary);outline:none}.toolbar-actions{display:flex;gap:.5rem}.action-btn{position:relative;display:inline-flex;align-items:center;gap:.5rem;padding:.625rem 1.25rem;background:var(--bg-primary);border:1px solid var(--border-color);border-radius:6px;color:var(--text-secondary);font-family:var(--font-mono);font-size:.8125rem;font-weight:600;letter-spacing:.05em;text-transform:uppercase;cursor:pointer;transition:all .15s cubic-bezier(.4,0,.2,1);overflow:hidden}.action-btn:hover{transform:translateY(-1px);color:var(--text-primary);border-color:var(--accent-primary);box-shadow:0 2px 8px var(--accent-glow)}.action-btn:active{transform:translateY(1px)}.action-btn--format{background:#87ceeb1a;border-color:#87ceeb66;color:#5a9eb8}.action-btn--format:hover{background:#87ceeb33;border-color:var(--accent-primary);box-shadow:0 2px 12px var(--accent-glow)}.action-btn--minify{background:#ffd93d1a;border-color:#ffd93d66;color:#c9a53d}.action-btn--minify:hover{background:#ffd93d33;border-color:var(--warning);box-shadow:0 2px 12px #ffd93d33}.action-btn--clear{background:transparent;border-color:#ff8b8b66;color:#d94848;padding:.625rem 1rem}.action-btn--clear:hover{background:#ff8b8b1a;border-color:var(--error);box-shadow:0 2px 12px #ff8b8b26}.editor-container{display:grid;grid-template-columns:1fr 1fr;gap:1rem;min-height:500px}.pane{display:flex;flex-direction:column;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:12px;overflow:hidden;transition:border-color var(--transition-fast);position:relative}.pane--input{background:var(--bg-primary);border-color:var(--border-color)}.pane--input:focus-within{border-color:var(--accent-primary);box-shadow:0 0 0 2px var(--accent-glow)}.pane--output{position:relative}.pane--output.has-error{border-color:var(--error);animation:shake .4s ease-in-out}@keyframes shake{0%,to{transform:translate(0)}20%{transform:translate(-4px)}40%{transform:translate(4px)}60%{transform:translate(-4px)}80%{transform:translate(4px)}}.pane-header{display:flex;align-items:center;justify-content:space-between;padding:.75rem 1rem;background:var(--bg-tertiary);border-bottom:1px solid var(--border-color)}.pane-label{font-family:var(--font-mono);font-size:.75rem;font-weight:500;letter-spacing:.05em;color:var(--text-muted);text-transform:uppercase}.char-count{font-family:var(--font-mono);font-size:.75rem;color:var(--text-muted);transition:color var(--transition-fast)}.char-count--warning{color:var(--warning)}.char-count--error{color:var(--error)}.copy-btn{background:var(--accent-primary);border:none;border-radius:6px;padding:.375rem .875rem;color:var(--bg-primary);font-family:var(--font-mono);font-size:.75rem;font-weight:600;cursor:pointer;transition:all var(--transition-fast)}.copy-btn:hover:not(:disabled){background:var(--accent-secondary);transform:translateY(-1px)}.copy-btn:active:not(:disabled){transform:translateY(0)}.copy-btn:disabled{background:var(--border-color);color:var(--text-muted);cursor:not-allowed}.copy-btn--copied{background:var(--success)!important}.json-textarea{flex:1;width:100%;background:transparent;border:none;padding:1rem;color:var(--text-primary);font-family:JetBrains Mono,monospace;font-size:.875rem;line-height:1.6;resize:none;outline:none;-moz-tab-size:2;tab-size:2}.json-textarea::placeholder{color:var(--text-muted);font-style:italic}.json-textarea--output{background:var(--bg-secondary)}.error-display{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);display:none;flex-direction:column;align-items:center;gap:.75rem;padding:1.5rem 2rem;background:#ff8b8b14;border:1px solid rgba(255,139,139,.3);border-radius:8px;max-width:85%;text-align:center}.error-display.visible{display:flex}.error-icon{font-size:2rem;color:var(--error);flex-shrink:0}.error-title{font-family:var(--font-mono);font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.1em;color:var(--error)}#errorMessage{font-family:var(--font-mono);font-size:.8125rem;color:var(--text-secondary);line-height:1.5;word-break:break-word;max-width:100%}.warning-banner{display:none;align-items:center;gap:.5rem;padding:.75rem 1rem;background:#ffd93d1a;border:1px solid rgba(255,217,61,.3);border-radius:8px;margin-top:1rem;font-family:var(--font-mono);font-size:.875rem;color:#c9a53d}.warning-banner.visible{display:flex}.hidden{display:none!important}.footer{margin-top:2rem;padding-top:1.5rem;border-top:1px solid var(--border-color);text-align:center;font-size:.875rem;color:var(--text-muted)}@media (max-width: 768px){.container{padding:1.5rem 1rem}.toolbar{flex-direction:column;align-items:stretch;gap:.75rem}.toolbar-actions{justify-content:stretch}.action-btn{flex:1;justify-content:center}.indent-selector{justify-content:space-between}.editor-container{grid-template-columns:1fr;min-height:auto}.pane{min-height:300px}.pane--output{order:2}.json-textarea{font-size:.8125rem}}.json-textarea::selection{background:var(--accent-primary);color:var(--bg-primary)}.json-textarea::-webkit-scrollbar{width:10px;height:10px}.json-textarea::-webkit-scrollbar-track{background:var(--bg-tertiary);border-radius:5px}.json-textarea::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:5px;border:2px solid var(--bg-tertiary)}.json-textarea::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}.pane:focus-within .pane-label{color:var(--accent-primary)}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.json-textarea--output{animation:fadeIn .2s ease-out}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-secondary)}::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}::selection{background:var(--accent-primary);color:var(--bg-primary)}