:root{--color-primary: hsl(15, 85%, 65%);--color-primary-dark: hsl(15, 85%, 55%);--color-primary-light: hsl(15, 85%, 75%);--color-primary-hover: hsl(15, 85%, 60%);--color-primary-bg: hsl(15, 85%, 95%);--color-primary-border: hsl(15, 85%, 88%);--color-secondary: hsl(220, 15%, 30%);--color-accent: hsl(180, 70%, 55%);--color-success: hsl(145, 65%, 50%);--color-warning: hsl(40, 95%, 55%);--color-error: hsl(0, 75%, 60%);--color-bg: hsl(30, 40%, 97%);--color-bg-elevated: hsl(0, 0%, 100%);--color-bg-card: hsl(0, 0%, 100%);--color-text: hsl(220, 20%, 20%);--color-text-muted: hsl(220, 10%, 50%);--color-text-subtle: hsl(220, 10%, 65%);--color-border: hsl(220, 15%, 90%);--color-border-light: hsl(220, 10%, 85%);--space-card-mobile: 1rem;--space-card-tablet: 1.25rem;--space-card-desktop: 1.75rem;--space-xs: .375rem;--space-sm: .625rem;--space-md: 1rem;--space-lg: 1.75rem;--space-xl: 2.5rem;--space-2xl: 3.5rem;--radius-sm: .375rem;--radius-md: .5rem;--radius-lg: .75rem;--radius-xl: 1rem;--radius-card: 1.5rem;--radius-btn: .75rem;--radius-full: 9999px;--shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, .04), 0 1px 2px 0 rgba(0, 0, 0, .03);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .06), 0 2px 4px -1px rgba(0, 0, 0, .04);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .08), 0 4px 6px -2px rgba(0, 0, 0, .04);--shadow-glow: 0 0 0 3px rgba(255, 140, 100, .12);--font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Helvetica Neue", sans-serif;--font-size-xs: .75rem;--font-size-sm: .875rem;--font-size-base: 1rem;--font-size-lg: 1.125rem;--font-size-xl: 1.375rem;--font-size-2xl: 1.75rem;--font-size-3xl: 2.25rem;--line-height-tight: 1.25;--line-height-normal: 1.5;--line-height-relaxed: 1.75;--transition-fast: .15s cubic-bezier(.4, 0, .2, 1);--transition-base: .25s cubic-bezier(.4, 0, .2, 1);--transition-slow: .35s cubic-bezier(.4, 0, .2, 1)}[data-theme=ocean]{--color-primary: hsl(200, 75%, 55%);--color-primary-dark: hsl(200, 75%, 45%);--color-primary-light: hsl(200, 75%, 65%);--color-primary-hover: hsl(200, 75%, 50%);--color-primary-bg: hsl(200, 75%, 95%);--color-primary-border: hsl(200, 75%, 88%);--color-bg: hsl(200, 30%, 96%);--color-bg-elevated: hsl(0, 0%, 100%);--color-bg-card: hsl(0, 0%, 100%);--shadow-glow: 0 0 0 3px rgba(66, 153, 225, .12)}[data-theme=forest]{--color-primary: hsl(145, 65%, 50%);--color-primary-dark: hsl(145, 65%, 40%);--color-primary-light: hsl(145, 65%, 60%);--color-primary-hover: hsl(145, 65%, 45%);--color-primary-bg: hsl(145, 65%, 95%);--color-primary-border: hsl(145, 65%, 88%);--color-bg: hsl(145, 20%, 96%);--color-bg-elevated: hsl(0, 0%, 100%);--color-bg-card: hsl(0, 0%, 100%);--shadow-glow: 0 0 0 3px rgba(72, 187, 120, .12)}*{margin:0;padding:0;box-sizing:border-box;touch-action:manipulation;user-select:none;-webkit-user-select:none;-webkit-tap-highlight-color:transparent;tap-highlight-color:transparent}input,textarea,[contenteditable]{user-select:text;-webkit-user-select:text}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;padding:env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left)}body{font-family:var(--font-family);font-size:var(--font-size-base);line-height:var(--line-height-normal);color:var(--color-text);background:var(--color-bg);min-height:100vh;min-height:100dvh;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;letter-spacing:-.011em;position:relative;overflow-x:hidden}#root{min-height:100vh;min-height:100dvh;display:flex;flex-direction:column}h1,h2,h3,h4,h5,h6{font-weight:700;line-height:var(--line-height-tight);margin-bottom:var(--space-md);letter-spacing:-.02em}h1{font-size:var(--font-size-3xl)}h2{font-size:var(--font-size-2xl);font-weight:650}h3{font-size:var(--font-size-xl);font-weight:600}h4{font-size:var(--font-size-lg);font-weight:600}p{margin-bottom:var(--space-md)}a{color:var(--color-primary-light);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--color-primary)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-sm);padding:var(--space-md) var(--space-xl);font-size:var(--font-size-base);font-weight:600;border:none;border-radius:var(--radius-lg);cursor:pointer;transition:all var(--transition-base);text-decoration:none;position:relative;overflow:hidden}.btn:before{content:"";position:absolute;top:50%;left:50%;width:0;height:0;border-radius:50%;background:#ffffff1a;transform:translate(-50%,-50%);transition:width var(--transition-slow),height var(--transition-slow)}.btn:hover:before{width:300px;height:300px}.btn-primary{background:var(--color-primary);color:#fff;box-shadow:0 2px 8px -2px #0000001f;border-radius:var(--radius-btn);font-weight:600;min-height:3.5rem;padding:0 var(--space-xl);letter-spacing:-.01em}.btn-primary:hover{background:var(--color-primary-hover);transform:translateY(-1px);box-shadow:0 4px 12px -2px #00000029}.btn-primary:active{transform:scale(.96) translateY(1px);box-shadow:0 1px 3px -1px #0003;background:var(--color-primary-dark);filter:brightness(.95)}.btn-secondary{background:transparent;color:var(--color-text);border:1.5px solid var(--color-border);border-radius:var(--radius-btn);font-weight:500;min-height:3.5rem;padding:0 var(--space-xl);letter-spacing:-.01em}.btn-secondary:hover{background:var(--color-bg);border-color:var(--color-text-muted)}.btn-secondary:active{background:var(--color-border);transform:scale(.95);border-color:var(--color-text-subtle)}.btn-success{background:var(--color-success);color:#fff}.btn-success:hover{filter:brightness(1.1);transform:translateY(-2px)}.btn-success:active{filter:brightness(.85);transform:scale(.96);box-shadow:inset 0 2px 4px #0003}.btn-danger{background:var(--color-error);color:#fff}.btn-danger:hover{filter:brightness(1.1)}.btn-danger:active{filter:brightness(.85);transform:scale(.95);box-shadow:inset 0 2px 4px #0003}.btn-sm{padding:var(--space-sm) var(--space-md);font-size:var(--font-size-sm)}.btn:disabled{opacity:.5;cursor:not-allowed;transform:none!important}.card{background:var(--color-bg-card);border-radius:1.75rem;padding:var(--space-card-mobile);box-shadow:0 2px 12px -4px #0000000f,0 1px 6px -2px #00000008;border:none;transition:all var(--transition-base)}.card:hover{box-shadow:0 4px 12px -2px #0000001a,0 2px 6px -1px #0000000f}.card-elevated{background:var(--color-bg-elevated);box-shadow:0 1px 3px #0000000d}.action-block{width:100%;padding:1rem 1.125rem;border-radius:.75rem;cursor:pointer;text-align:left;transition:box-shadow .1s ease-out,border-color .1s ease-out,opacity .1s ease-out,transform .1s ease-out}.action-block--primary{background-color:var(--color-primary);border:1.5px solid var(--color-primary-dark);box-shadow:0 2px 6px #f2805a59}.action-block--primary:hover{opacity:.93;box-shadow:0 1px 3px #f2805a40}.action-block--primary:active{transform:translateY(1px);box-shadow:inset 0 1px 3px #00000026;opacity:.88}.action-block--secondary{background-color:var(--color-bg-elevated);border:1.5px solid var(--color-border);box-shadow:0 1px 4px #2b303b14}.action-block--secondary:hover{border-color:var(--color-text-subtle);box-shadow:0 2px 6px #2b303b1f}.action-block--secondary:active{transform:translateY(1px);box-shadow:inset 0 1px 3px #00000014;border-color:var(--color-text-subtle)}.action-block--join{background-color:var(--color-bg-elevated);border:1px solid var(--color-border);box-shadow:none;text-align:center;padding:.625rem 1.125rem}.action-block--join:hover{border-color:var(--color-text-subtle);box-shadow:0 1px 4px #2b303b14}.action-block--join:active{transform:translateY(1px);box-shadow:inset 0 1px 2px #0000000f}.action-block:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}.modal-btn{width:100%;padding:.8125rem 1rem;border-radius:.625rem;font-size:.9375rem;cursor:pointer;transition:opacity .1s ease-out,border-color .1s ease-out,box-shadow .1s ease-out,transform .1s ease-out}.modal-btn--primary{background-color:var(--color-primary);color:#fff;border:none;font-weight:600}.modal-btn--primary:hover:not(:disabled){opacity:.9}.modal-btn--primary:active:not(:disabled){transform:translateY(1px);opacity:.88}.modal-btn--primary:disabled{background-color:var(--color-border);color:var(--color-text-subtle);cursor:not-allowed}.modal-btn--secondary{background-color:var(--color-bg-elevated);color:var(--color-text);border:1.5px solid var(--color-border);font-weight:500}.modal-btn--secondary:hover{border-color:var(--color-text-subtle);box-shadow:0 1px 4px #2b303b1a}.modal-btn--secondary:active{transform:translateY(1px);border-color:var(--color-text-subtle);box-shadow:inset 0 1px 2px #0000000f}.modal-btn:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}.form-group{margin-bottom:var(--space-lg)}.form-label{display:block;font-weight:600;margin-bottom:.5rem;color:var(--color-text);font-size:.8125rem;text-transform:uppercase;letter-spacing:.04em}.form-input,.form-select,.form-textarea{width:100%;padding:.875rem 1rem;font-size:var(--font-size-base);font-family:var(--font-family);color:var(--color-text);background:var(--color-bg);border:1.5px solid var(--color-border);border-radius:var(--radius-lg);transition:all var(--transition-base);line-height:var(--line-height-normal)}.form-input:focus,.form-select:focus,.form-textarea:focus{outline:none;border-color:var(--color-primary);background:var(--color-bg-elevated);box-shadow:0 0 0 3px #ff8c6414}input[type=number]::-webkit-inner-spin-button,input[type=number]::-webkit-outer-spin-button{-webkit-appearance:none;margin:0}input[type=number]{-moz-appearance:textfield;-webkit-appearance:textfield;appearance:textfield}.form-textarea{resize:vertical;min-height:100px}.form-hint{display:block;margin-top:var(--space-xs);font-size:var(--font-size-sm);color:var(--color-text-subtle)}.form-error{color:var(--color-error);font-size:var(--font-size-sm);margin-top:var(--space-xs)}.form-checkbox,.form-radio{display:flex;align-items:center;gap:var(--space-sm);margin-bottom:var(--space-sm);cursor:pointer}.form-checkbox input,.form-radio input{width:1.25rem;height:1.25rem;cursor:pointer}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 var(--space-lg)}.container-sm{max-width:600px}.page{flex:1;padding:var(--space-xl) 0}.page-header{text-align:center;margin-bottom:var(--space-2xl)}.page-title{color:var(--color-text);margin-bottom:var(--space-md);font-weight:700}.page-subtitle{color:var(--color-text-muted);font-size:var(--font-size-lg)}.grid{display:grid;gap:var(--space-lg)}.grid-2{grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}.badge{display:inline-flex;align-items:center;padding:var(--space-xs) var(--space-md);font-size:var(--font-size-xs);font-weight:600;border-radius:var(--radius-full);text-transform:uppercase;letter-spacing:.05em}.badge-success{background:#48bb7833;color:var(--color-success);border:1px solid var(--color-success)}.badge-warning{background:#ed893633;color:var(--color-warning);border:1px solid var(--color-warning)}.badge-error{background:#f5656533;color:var(--color-error);border:1px solid var(--color-error)}.badge-info{background:#4299e133;color:var(--color-accent);border:1px solid var(--color-accent)}.text-center{text-align:center}.text-muted{color:var(--color-text-muted)}.text-subtle{color:var(--color-text-subtle)}.mt-sm{margin-top:var(--space-sm)}.mt-md{margin-top:var(--space-md)}.mt-lg{margin-top:var(--space-lg)}.mt-xl{margin-top:var(--space-xl)}.mb-sm{margin-bottom:var(--space-sm)}.mb-md{margin-bottom:var(--space-md)}.mb-lg{margin-bottom:var(--space-lg)}.mb-xl{margin-bottom:var(--space-xl)}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-center{justify-content:center}.justify-between{justify-content:space-between}.gap-sm{gap:var(--space-sm)}.gap-md{gap:var(--space-md)}.gap-lg{gap:var(--space-lg)}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.fade-in{animation:fadeIn var(--transition-base) ease-out}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.pulse{animation:pulse 2s cubic-bezier(.4,0,.6,1) infinite}.spinner{width:40px;height:40px;border:4px solid var(--color-border);border-top-color:var(--color-primary);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.ui-shell{min-height:100vh;min-height:100dvh;display:flex;align-items:center;justify-content:center;padding:var(--space-lg) var(--space-lg)}.ui-shell-inner{width:100%;max-width:420px}.ui-separator{display:flex;align-items:center;gap:var(--space-md);margin:var(--space-xl) 0;color:var(--color-text-subtle);font-size:var(--font-size-sm)}.ui-separator:before,.ui-separator:after{content:"";flex:1;height:1px;background:var(--color-border)}.ui-code-input-row{display:flex;gap:var(--space-sm);align-items:stretch}.ui-code-input-row input{flex:1}.ui-code-input-row button{width:3.5rem;height:3.5rem;min-height:unset;padding:0;border-radius:var(--radius-btn);display:flex;align-items:center;justify-content:center}@media (max-width: 768px){:root{--font-size-3xl: 1.75rem;--font-size-2xl: 1.375rem}.container{padding:0 var(--space-md)}.page{padding:var(--space-xl) 0}.btn{width:100%}.ui-shell{padding:var(--space-md)}}.notebook-row-input{background:transparent;border-color:transparent;box-shadow:none;transition:border-color var(--transition-base),background var(--transition-base)}.notebook-row-input:focus{border-color:var(--color-border);background:var(--color-bg-elevated);box-shadow:none}