:root{--color-primary: #6366f1;--color-primary-dark: #4f46e5;--color-primary-light: #818cf8;--color-secondary: #ec4899;--color-secondary-dark: #db2777;--color-secondary-light: #f472b6;--color-accent: #14b8a6;--color-accent-dark: #0d9488;--color-success: #10b981;--color-warning: #f59e0b;--color-error: #ef4444;--color-bg-primary: #ffffff;--color-bg-secondary: #f8fafc;--color-bg-tertiary: #f1f5f9;--color-text-primary: #0f172a;--color-text-secondary: #475569;--color-text-tertiary: #94a3b8;--color-border: #e2e8f0;--color-border-light: #f1f5f9;--gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);--gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);--gradient-accent: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);--gradient-success: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);--glass-bg: rgba(255, 255, 255, .7);--glass-border: rgba(255, 255, 255, .18);--glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, .15);--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--spacing-2xl: 3rem;--spacing-3xl: 4rem;--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-display: "Space Grotesk", var(--font-sans);--font-size-xs: .75rem;--font-size-sm: .875rem;--font-size-base: 1rem;--font-size-lg: 1.125rem;--font-size-xl: 1.25rem;--font-size-2xl: 1.5rem;--font-size-3xl: 1.875rem;--font-size-4xl: 2.25rem;--radius-sm: .375rem;--radius-md: .5rem;--radius-lg: .75rem;--radius-xl: 1rem;--radius-2xl: 1.5rem;--radius-full: 9999px;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .1);--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);--z-dropdown: 1000;--z-sticky: 1020;--z-fixed: 1030;--z-modal: 1040;--z-popover: 1050;--z-tooltip: 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var(--spacing-lg)}.container-sm{max-width:768px}.container-lg{max-width:1536px}.grid{display:grid;gap:var(--spacing-lg)}.grid-cols-1{grid-template-columns:repeat(1,1fr)}.grid-cols-2{grid-template-columns:repeat(2,1fr)}.grid-cols-3{grid-template-columns:repeat(3,1fr)}.grid-cols-4{grid-template-columns:repeat(4,1fr)}@media(max-width:768px){.grid-cols-2,.grid-cols-3,.grid-cols-4{grid-template-columns:1fr}}@media(min-width:769px)and (max-width:1024px){.grid-cols-3,.grid-cols-4{grid-template-columns:repeat(2,1fr)}}.glass-card{background:var(--glass-bg);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border:1px solid var(--glass-border);border-radius:var(--radius-xl);box-shadow:var(--glass-shadow);padding:var(--spacing-xl);transition:transform var(--transition-base),box-shadow 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0}.tool-selector-header{margin-bottom:var(--spacing-xl)}.tool-grid{grid-template-columns:1fr;gap:var(--spacing-lg)}}.app-loading,.app-error{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;padding:var(--spacing-xl);text-align:center}.loading-spinner{width:48px;height:48px;border:4px solid var(--color-border);border-top-color:var(--color-primary);border-radius:50%;margin-bottom:var(--spacing-lg)}.app-loading p{color:var(--color-text-secondary);font-size:var(--font-size-lg)}.app-error svg{color:var(--color-error);margin-bottom:var(--spacing-lg)}.app-error h2{color:var(--color-text-primary);margin-bottom:var(--spacing-md)}.app-error p{color:var(--color-text-secondary);margin-bottom:var(--spacing-xl);max-width:500px}.tool-page{padding:var(--spacing-xl) 0}.tool-page-header{margin-bottom:var(--spacing-xl)}main{flex:1;padding-top:var(--spacing-xl);padding-bottom:var(--spacing-3xl)}.tool-page-title{display:flex;align-items:center;gap:var(--spacing-lg);margin-bottom:var(--spacing-xl);padding-bottom:var(--spacing-xl);border-bottom:1px solid var(--color-border)}.tool-page-icon{width:64px;height:64px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-xl);color:#fff;flex-shrink:0}.tool-page-title h2{margin:0;font-size:var(--font-size-3xl)}.tool-page-description{margin:var(--spacing-xs) 0 0 0;color:var(--color-text-secondary);font-size:var(--font-size-base)}.tool-actions{display:flex;justify-content:center;gap:var(--spacing-md);margin-top:var(--spacing-xl);padding-top:var(--spacing-xl);border-top:1px solid var(--color-border)}.compression-level-btn{padding:var(--spacing-md);background:var(--color-bg-secondary);border:2px solid transparent;border-radius:var(--radius-md);cursor:pointer;transition:all .2s ease;text-align:center;color:var(--color-text-primary)}.compression-level-btn:hover{background:var(--color-bg-tertiary);border-color:var(--color-primary);transform:translateY(-2px)}.compression-level-btn.active{background:linear-gradient(135deg,var(--color-primary),var(--color-secondary));border-color:var(--color-primary);color:#fff}.compression-level-btn.active:hover{transform:translateY(-2px);box-shadow:0 8px 24px #4facfe4d}.compression-level-btn.active .compression-estimate{color:#fffffff2}.compression-estimate{display:inline-block;padding:var(--spacing-xs) var(--spacing-sm);background:#6366f11a;border-radius:var(--radius-sm);transition:all .2s ease}.compression-level-btn.active .compression-estimate{background:#fff3}@media(max-width:768px){.tool-page-title{flex-direction:column;align-items:flex-start}.tool-actions{flex-direction:column}.tool-actions .btn{width:100%}}.rotation-angle-btn{padding:var(--spacing-md);background:var(--color-bg-secondary);border:2px solid transparent;border-radius:var(--radius-md);cursor:pointer;transition:all .2s ease;text-align:center;color:var(--color-text-primary);display:flex;flex-direction:column;align-items:center}.rotation-angle-btn:hover{background:var(--color-bg-tertiary);border-color:var(--color-primary);transform:translateY(-2px)}.rotation-angle-btn.active{background:linear-gradient(135deg,#f093fb,#f5576c);border-color:#f093fb;color:#fff}.rotation-angle-btn.active svg{color:#fff}.page-previews-grid{max-height:500px;overflow-y:auto;padding:var(--spacing-sm)}.page-preview-card{position:relative;cursor:pointer;border-radius:var(--radius-md);overflow:hidden;transition:all .2s ease;border:2px solid transparent}.page-preview-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}.page-preview-card.selected{border-color:var(--color-primary)}.page-preview-card.selected .page-preview-checkbox{opacity:1;background:var(--color-primary)}.page-preview-image{position:relative;aspect-ratio:1 / 1.414;background:var(--color-bg-tertiary);overflow:hidden}.page-preview-image img{width:100%;height:100%;object-fit:contain;transition:transform .3s ease}.page-preview-checkbox{position:absolute;top:var(--spacing-xs);right:var(--spacing-xs);width:28px;height:28px;background:#00000080;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;opacity:0;transition:all .2s ease}.page-preview-checkbox svg{color:#fff}.page-preview-card:hover .page-preview-checkbox{opacity:.7}.page-preview-label{padding:var(--spacing-xs);text-align:center;font-size:var(--font-size-sm);font-weight:500;color:var(--color-text-secondary);background:var(--color-bg-secondary)}.page-preview-card.selected .page-preview-label{background:var(--color-primary);color:#fff}.format-btn,.quality-btn{padding:var(--spacing-md);background:var(--color-bg-secondary);border:2px solid transparent;border-radius:var(--radius-md);cursor:pointer;transition:all .2s ease;text-align:center;color:var(--color-text-primary);display:flex;flex-direction:column;align-items:center}.format-btn:hover,.quality-btn:hover{background:var(--color-bg-tertiary);border-color:var(--color-primary);transform:translateY(-2px)}.format-btn.active,.quality-btn.active{background:linear-gradient(135deg,#43e97b,#38f9d7);border-color:#43e97b;color:#fff}.format-btn.active svg,.quality-btn.active svg{color:#fff}.format-btn.active .tool-page-description,.quality-btn.active .tool-page-description{color:#ffffffe6}.page-size-btn{padding:var(--spacing-md);background:var(--color-bg-secondary);border:2px solid transparent;border-radius:var(--radius-md);cursor:pointer;transition:all .2s ease;text-align:center;color:var(--color-text-primary)}.page-size-btn:hover{background:var(--color-bg-tertiary);border-color:var(--color-primary);transform:translateY(-2px)}.page-size-btn.active{background:linear-gradient(135deg,#fa709a,#fee140);border-color:#fa709a;color:#fff}