:root{--color-primary: #6C5CE7;--color-primary-hover: #5A4BD1;--color-primary-light: #A29BFE;--color-accent: #FDCB6E;--color-accent-hover: #F0BE5A;--color-surface: #F8F7FF;--color-background: #FFFFFF;--color-ink: #1A1A2E;--color-ink-secondary: #4A4A6A;--color-muted: #8E8EA0;--color-border: #E2E0F0;--color-success: #00B894;--color-danger: #E17055;--color-danger-hover: #D15A3F;--color-warning: #FDCB6E;--color-info: #74B9FF;--font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-mono: "JetBrains Mono", "Fira Code", monospace;--font-size-h1: 2rem;--font-size-h2: 1.5rem;--font-size-h3: 1.25rem;--font-size-body: 1rem;--font-size-body-sm: .875rem;--font-size-caption: .75rem;--font-weight-normal: 400;--font-weight-medium: 500;--font-weight-semibold: 600;--font-weight-bold: 700;--line-height: 1.6;--sp-xs: 4px;--sp-sm: 8px;--sp-md: 16px;--sp-lg: 24px;--sp-xl: 32px;--sp-2xl: 48px;--sp-3xl: 64px;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--radius-xl: 16px;--radius-full: 9999px;--shadow-sm: 0 1px 2px rgba(26, 26, 46, .06);--shadow-md: 0 4px 12px rgba(26, 26, 46, .08);--shadow-lg: 0 8px 24px rgba(26, 26, 46, .12);--shadow-xl: 0 12px 48px rgba(26, 26, 46, .16);--transition-fast: .15s ease;--transition-base: .25s ease;--transition-slow: .4s ease}.dark{--color-primary: #A29BFE;--color-primary-hover: #B8B1FF;--color-primary-light: #6C5CE7;--color-background: #16213E;--color-surface: #1A1A2E;--color-ink: #E8E8F0;--color-ink-secondary: #A8A8C0;--color-muted: #6A6A8A;--color-border: #2A2A4E;--color-accent: #FDCB6E;--color-accent-hover: #F0BE5A;--color-success: #00B894;--color-danger: #E17055;--color-danger-hover: #D15A3F;--color-info: #74B9FF;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .2);--shadow-md: 0 4px 12px rgba(0, 0, 0, .3);--shadow-lg: 0 8px 24px rgba(0, 0, 0, .4);--shadow-xl: 0 12px 48px rgba(0, 0, 0, .5)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-body);font-size:var(--font-size-body);font-weight:var(--font-weight-normal);line-height:var(--line-height);color:var(--color-ink);background-color:var(--color-background);transition:background-color var(--transition-base),color var(--transition-base);min-height:100vh}h1,h2,h3,h4,h5,h6{font-weight:var(--font-weight-semibold);line-height:1.3;color:var(--color-ink)}h1{font-size:var(--font-size-h1)}h2{font-size:var(--font-size-h2)}h3{font-size:var(--font-size-h3)}a{color:var(--color-primary);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--color-primary-hover);text-decoration:underline}code,pre{font-family:var(--font-mono)}input,textarea,select,button{font-family:inherit;font-size:inherit}.text-center{text-align:center}.text-muted{color:var(--color-muted)}.text-danger{color:var(--color-danger)}.text-success{color:var(--color-success)}.flex-row{display:flex;flex-direction:row}.flex-col{display:flex;flex-direction:column}.flex-wrap{flex-wrap:wrap}.items-center{align-items:center}.justify-between{justify-content:space-between}.justify-center{justify-content:center}.gap-xs{gap:var(--sp-xs)}.gap-sm{gap:var(--sp-sm)}.gap-md{gap:var(--sp-md)}.gap-lg{gap:var(--sp-lg)}.gap-xl{gap:var(--sp-xl)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--sp-sm);padding:var(--sp-sm) var(--sp-md);border:2px solid transparent;border-radius:var(--radius-md);font-weight:var(--font-weight-medium);font-size:var(--font-size-body-sm);cursor:pointer;transition:all var(--transition-fast);white-space:nowrap;line-height:1.4}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background-color:var(--color-primary);color:#fff;border-color:var(--color-primary)}.btn-primary:hover:not(:disabled){background-color:var(--color-primary-hover);border-color:var(--color-primary-hover)}.btn-secondary{background-color:transparent;color:var(--color-ink);border-color:var(--color-border)}.btn-secondary:hover:not(:disabled){background-color:var(--color-surface);border-color:var(--color-primary);color:var(--color-primary)}.btn-danger{background-color:var(--color-danger);color:#fff;border-color:var(--color-danger)}.btn-danger:hover:not(:disabled){background-color:var(--color-danger-hover);border-color:var(--color-danger-hover)}.btn-ghost{background-color:transparent;color:var(--color-ink-secondary);border-color:transparent}.btn-ghost:hover:not(:disabled){background-color:var(--color-surface);color:var(--color-ink)}.btn-sm{padding:var(--sp-xs) var(--sp-sm);font-size:var(--font-size-caption)}.btn-lg{padding:var(--sp-md) var(--sp-lg);font-size:var(--font-size-body)}.card{background-color:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--sp-lg);transition:box-shadow var(--transition-fast),border-color var(--transition-fast)}.card:hover{box-shadow:var(--shadow-md)}.card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--sp-md);padding-bottom:var(--sp-md);border-bottom:1px solid var(--color-border)}.card-title{font-size:var(--font-size-h3);font-weight:var(--font-weight-semibold)}.form-group{display:flex;flex-direction:column;gap:var(--sp-xs)}.form-label{font-size:var(--font-size-body-sm);font-weight:var(--font-weight-medium);color:var(--color-ink-secondary)}.form-input,.form-textarea,.form-select{width:100%;padding:var(--sp-sm) var(--sp-md);background-color:var(--color-background);color:var(--color-ink);border:2px solid var(--color-border);border-radius:var(--radius-md);transition:border-color var(--transition-fast),box-shadow var(--transition-fast);outline:none}.form-input:focus,.form-textarea:focus,.form-select:focus{border-color:var(--color-primary);box-shadow:0 0 0 3px #6c5ce726}.form-input.error,.form-textarea.error{border-color:var(--color-danger)}.form-input.error:focus,.form-textarea.error:focus{box-shadow:0 0 0 3px #e1705526}.form-textarea{resize:vertical;min-height:80px;font-family:var(--font-mono)}.form-error{font-size:var(--font-size-caption);color:var(--color-danger)}.form-hint{font-size:var(--font-size-caption);color:var(--color-muted)}.input-wrapper{display:flex;align-items:center;background-color:var(--color-background);border:2px solid var(--color-border);border-radius:var(--radius-md);transition:border-color var(--transition-fast),box-shadow var(--transition-fast)}.input-wrapper:focus-within{border-color:var(--color-primary);box-shadow:0 0 0 3px #6c5ce726}.input-wrapper .input-prefix{padding:var(--sp-sm) var(--sp-xs) var(--sp-sm) var(--sp-md);color:var(--color-muted);font-size:var(--font-size-body-sm);font-family:var(--font-mono);-webkit-user-select:none;user-select:none}.input-wrapper .form-input{border:none!important;box-shadow:none!important;padding-left:var(--sp-xs)}.input-wrapper .form-input:focus{box-shadow:none!important}.badge{display:inline-flex;align-items:center;gap:4px;padding:2px 8px;border-radius:var(--radius-full);font-size:var(--font-size-caption);font-weight:var(--font-weight-medium);white-space:nowrap}.badge-removable{cursor:default}.badge-remove{display:inline-flex;align-items:center;justify-content:center;width:14px;height:14px;border-radius:50%;background:none;border:none;cursor:pointer;font-size:10px;line-height:1;color:inherit;opacity:.7;transition:opacity var(--transition-fast)}.badge-remove:hover{opacity:1}.grid-palettes{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:var(--sp-lg)}.grid-tags{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:var(--sp-md)}.modal-overlay{position:fixed;inset:0;background-color:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000;animation:fadeIn .15s ease}.modal-content{background-color:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-xl);padding:var(--sp-xl);max-width:480px;width:90%;box-shadow:var(--shadow-xl);animation:scaleIn .2s ease}.modal-header{margin-bottom:var(--sp-md)}.modal-title{font-size:var(--font-size-h3);font-weight:var(--font-weight-semibold)}.modal-body{margin-bottom:var(--sp-lg);color:var(--color-ink-secondary)}.modal-footer{display:flex;justify-content:flex-end;gap:var(--sp-sm)}.toast-container{position:fixed;top:var(--sp-lg);right:var(--sp-lg);display:flex;flex-direction:column;gap:var(--sp-sm);z-index:2000;pointer-events:none}.toast{display:flex;align-items:center;gap:var(--sp-sm);padding:var(--sp-sm) var(--sp-md);border-radius:var(--radius-md);background-color:var(--color-surface);border:1px solid var(--color-border);box-shadow:var(--shadow-lg);min-width:280px;max-width:420px;pointer-events:all;animation:slideIn .25s ease;font-size:var(--font-size-body-sm)}.toast-success{border-left:4px solid var(--color-success)}.toast-error{border-left:4px solid var(--color-danger)}.toast-info{border-left:4px solid var(--color-info)}.toast-message{flex:1}.toast-close{background:none;border:none;cursor:pointer;color:var(--color-muted);font-size:var(--font-size-body);padding:0;line-height:1}.color-swatch{display:inline-block;width:32px;height:32px;border-radius:var(--radius-sm);border:2px solid var(--color-border);cursor:pointer;transition:transform var(--transition-fast)}.color-swatch:hover{transform:scale(1.1)}.color-bar{display:flex;border-radius:var(--radius-md);overflow:hidden;width:100%}.color-bar-section{flex:1;height:48px;display:flex;align-items:center;justify-content:center;font-size:var(--font-size-caption);font-family:var(--font-mono);font-weight:var(--font-weight-medium);transition:flex var(--transition-fast)}.color-bar-section-sm{height:32px;font-size:10px}.color-bar-section:first-child{border-radius:var(--radius-md) 0 0 var(--radius-md)}.color-bar-section:last-child{border-radius:0 var(--radius-md) var(--radius-md) 0}.color-editor-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:var(--sp-md)}.color-slot{display:flex;flex-direction:column;align-items:center;gap:var(--sp-sm);padding:var(--sp-md);background-color:var(--color-surface);border:2px solid var(--color-border);border-radius:var(--radius-lg);transition:border-color var(--transition-fast)}.color-slot:focus-within{border-color:var(--color-primary)}.color-swatch-large{width:64px;height:64px;border-radius:var(--radius-md);border:2px solid var(--color-border)}.contrast-result{display:flex;align-items:center;gap:var(--sp-sm);padding:var(--sp-sm) var(--sp-md);border-radius:var(--radius-md);font-size:var(--font-size-body-sm)}.contrast-pass{background-color:#00b8941a;color:var(--color-success)}.contrast-fail{background-color:#e170551a;color:var(--color-danger)}.tabs{display:flex;gap:0;border-bottom:2px solid var(--color-border);margin-bottom:var(--sp-lg)}.tab{padding:var(--sp-sm) var(--sp-lg);background:none;border:none;border-bottom:2px solid transparent;margin-bottom:-2px;cursor:pointer;color:var(--color-ink-secondary);font-weight:var(--font-weight-medium);font-size:var(--font-size-body-sm);transition:all var(--transition-fast)}.tab:hover{color:var(--color-ink)}.tab.active{color:var(--color-primary);border-bottom-color:var(--color-primary)}.page-container{max-width:1200px;margin:0 auto;padding:var(--sp-xl)}.page-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--sp-xl)}.page-title{font-size:var(--font-size-h2);font-weight:var(--font-weight-bold)}.search-bar{display:flex;gap:var(--sp-sm);margin-bottom:var(--sp-lg)}.search-bar input{flex:1}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--sp-3xl) var(--sp-xl);text-align:center;color:var(--color-muted)}.empty-state-icon{font-size:3rem;margin-bottom:var(--sp-md)}.empty-state-title{font-size:var(--font-size-h3);font-weight:var(--font-weight-semibold);color:var(--color-ink-secondary);margin-bottom:var(--sp-sm)}.spinner{display:inline-block;width:20px;height:20px;border:2px solid var(--color-border);border-top-color:var(--color-primary);border-radius:50%;animation:spin .6s linear infinite}.spinner-lg{width:40px;height:40px;border-width:3px}.navbar{display:flex;align-items:center;justify-content:space-between;padding:var(--sp-md) var(--sp-xl);background-color:var(--color-surface);border-bottom:1px solid var(--color-border);position:sticky;top:0;z-index:100}.navbar-brand{display:flex;align-items:center;gap:var(--sp-sm);font-size:var(--font-size-h3);font-weight:var(--font-weight-bold);color:var(--color-ink);text-decoration:none}.navbar-brand:hover{text-decoration:none;color:var(--color-primary)}.navbar-brand-logo{width:32px;height:32px;background:linear-gradient(135deg,var(--color-primary),var(--color-accent));border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-size:16px}.navbar-nav{display:flex;align-items:center;gap:var(--sp-sm)}.navbar-link{padding:var(--sp-sm) var(--sp-md);color:var(--color-ink-secondary);font-weight:var(--font-weight-medium);font-size:var(--font-size-body-sm);border-radius:var(--radius-md);transition:all var(--transition-fast);text-decoration:none}.navbar-link:hover{color:var(--color-ink);background-color:var(--color-background);text-decoration:none}.navbar-link.active{color:var(--color-primary);background-color:var(--color-background)}.navbar-user{display:flex;align-items:center;gap:var(--sp-sm)}.navbar-avatar{width:32px;height:32px;border-radius:var(--radius-full);background-color:var(--color-primary-light);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:var(--font-weight-semibold);font-size:var(--font-size-body-sm)}.navbar-hamburger{display:none;background:none;border:none;cursor:pointer;padding:var(--sp-sm);color:var(--color-ink)}@media(max-width:768px){.navbar-hamburger{display:block}.navbar-nav{display:none;flex-direction:column;position:absolute;top:100%;left:0;right:0;background-color:var(--color-surface);border-bottom:1px solid var(--color-border);padding:var(--sp-md);box-shadow:var(--shadow-md)}.navbar-nav.open{display:flex}.grid-palettes{grid-template-columns:1fr}.page-container{padding:var(--sp-md)}.page-header{flex-direction:column;align-items:flex-start;gap:var(--sp-md)}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes scaleIn{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}@keyframes slideIn{0%{opacity:0;transform:translate(100%)}to{opacity:1;transform:translate(0)}}@keyframes spin{to{transform:rotate(360deg)}}.auth-page{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:var(--sp-xl)}.auth-card{background-color:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-xl);padding:var(--sp-2xl);width:100%;max-width:420px;box-shadow:var(--shadow-lg)}.auth-logo{text-align:center;margin-bottom:var(--sp-xl)}.auth-logo-icon{display:inline-flex;align-items:center;justify-content:center;width:48px;height:48px;background:linear-gradient(135deg,var(--color-primary),var(--color-accent));border-radius:var(--radius-md);font-size:24px;margin-bottom:var(--sp-sm)}.auth-title{font-size:var(--font-size-h2);font-weight:var(--font-weight-bold);text-align:center;margin-bottom:var(--sp-xs)}.auth-subtitle{text-align:center;color:var(--color-ink-secondary);margin-bottom:var(--sp-xl)}.auth-footer{text-align:center;margin-top:var(--sp-lg);font-size:var(--font-size-body-sm);color:var(--color-ink-secondary)}.palette-preview{display:flex;flex-direction:column;gap:var(--sp-lg);margin-bottom:var(--sp-xl)}.palette-hero{height:160px;border-radius:var(--radius-lg);display:flex;align-items:flex-end;padding:var(--sp-md)}.palette-hero-tag{padding:2px 8px;border-radius:var(--radius-full);font-size:var(--font-size-caption)}.palette-info{display:flex;flex-wrap:wrap;gap:var(--sp-md);margin-bottom:var(--sp-lg)}.palette-info-item{flex:1;min-width:200px}.palette-info-label{font-size:var(--font-size-caption);color:var(--color-muted);text-transform:uppercase;letter-spacing:.5px;margin-bottom:var(--sp-xs)}.export-panel{display:flex;flex-direction:column;gap:var(--sp-md)}.export-tabs{display:flex;gap:var(--sp-sm)}.export-tab{padding:var(--sp-xs) var(--sp-md);border:2px solid var(--color-border);border-radius:var(--radius-md);background:none;cursor:pointer;font-size:var(--font-size-body-sm);font-weight:var(--font-weight-medium);color:var(--color-ink-secondary);transition:all var(--transition-fast)}.export-tab.active{border-color:var(--color-primary);color:var(--color-primary)}.color-selector{position:relative}.color-selector-trigger{display:flex;align-items:center;gap:var(--sp-sm);padding:var(--sp-sm) var(--sp-md);background-color:var(--color-surface);border:2px solid var(--color-border);border-radius:var(--radius-md);cursor:pointer;font-size:var(--font-size-body-sm);min-width:140px;transition:border-color var(--transition-fast)}.color-selector-trigger:hover{border-color:var(--color-primary)}.color-selector-dot{width:16px;height:16px;border-radius:var(--radius-sm);border:1px solid var(--color-border);flex-shrink:0}.color-selector-dropdown{position:absolute;top:100%;left:0;z-index:50;margin-top:var(--sp-xs);background-color:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);min-width:200px;overflow:hidden}.color-selector-option{display:flex;align-items:center;gap:var(--sp-sm);padding:var(--sp-sm) var(--sp-md);cursor:pointer;transition:background-color var(--transition-fast);font-size:var(--font-size-body-sm)}.color-selector-option:hover{background-color:var(--color-background)}.color-selector-option.active{background-color:var(--color-primary-light);color:#fff}