:root{--calc-bg: #0D0D0D;--calc-btn-number: #1C1C1E;--calc-btn-number-pressed: #2C2C2E;--calc-btn-function: #2C2C2E;--calc-btn-operator: #FF6B00;--calc-btn-operator-pressed: #E55A00;--calc-btn-equals: linear-gradient(180deg, #FF6B00 0%, #FF8C00 100%);--calc-text-primary: #FFFFFF;--calc-text-secondary: #8E8E93;--calc-text-expression: #A1A1A6;--calc-accent: #FF6B00;--calc-divider: #1C1C1E;--sky-bg: #0A0E1A;--sky-card-bg: rgba(255, 255, 255, .05);--sky-card-border: rgba(255, 255, 255, .08);--sky-card-hover: rgba(255, 107, 0, .15);--sky-text-primary: #FFFFFF;--sky-text-secondary: #8B92A8;--sky-accent: #FF6B00;--sky-success: #34D399;--sky-danger: #EF4444;--sky-folder: #3B82F6;--sky-file: #6B7280;--font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--font-mono: "SF Mono", Monaco, "Cascadia Code", "Roboto Mono", monospace;--space-xs: 4px;--space-sm: 8px;--space-md: 16px;--space-lg: 24px;--space-xl: 32px;--space-2xl: 48px;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-xl: 24px;--radius-full: 50%;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .3);--shadow-md: 0 2px 8px rgba(0, 0, 0, .3);--shadow-lg: 0 4px 16px rgba(0, 0, 0, .4);--shadow-glow: 0 0 20px rgba(255, 107, 0, .3);--transition-fast: .15s ease;--transition-normal: .25s ease;--transition-slow: .4s ease}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent;-webkit-touch-callout:none}html{font-size:16px;-webkit-text-size-adjust:100%}body{font-family:var(--font-family);background:var(--calc-bg);color:var(--calc-text-primary);line-height:1.5;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow:hidden;width:100%;height:100%}#root{width:100%;height:100%}.app-container{width:100%;height:100%;display:flex;flex-direction:column;overflow:hidden}.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)}.w-full{width:100%}.h-full{height:100%}.text-center{text-align:center}.text-left{text-align:left}.text-right{text-align:right}.hidden{display:none!important}.invisible{visibility:hidden}.btn{display:inline-flex;align-items:center;justify-content:center;border:none;outline:none;cursor:pointer;font-family:inherit;font-size:1rem;transition:transform var(--transition-fast),opacity var(--transition-fast);user-select:none;-webkit-user-select:none}.btn:active{transform:scale(.95)}.btn:disabled{opacity:.5;cursor:not-allowed}::-webkit-scrollbar{width:4px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#ffffff26;border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:#ffffff40}::selection{background:#ff6b004d;color:var(--calc-text-primary)}:focus-visible{outline:2px solid var(--calc-accent);outline-offset:2px}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes scaleIn{0%{opacity:0;transform:scale(.9)}to{opacity:1;transform:scale(1)}}@keyframes pulse{0%,to{transform:scale(1)}50%{transform:scale(1.05)}}@keyframes glitch{0%{transform:translate(0)}20%{transform:translate(-2px,2px)}40%{transform:translate(-2px,-2px)}60%{transform:translate(2px,2px)}80%{transform:translate(2px,-2px)}to{transform:translate(0)}}@keyframes slideUp{0%{transform:translateY(100%)}to{transform:translateY(0)}}@keyframes shimmer{0%{background-position:-200% 0}to{background-position:200% 0}}.animate-fade-in{animation:fadeIn var(--transition-normal) forwards}.animate-fade-in-up{animation:fadeInUp var(--transition-normal) forwards}.animate-scale-in{animation:scaleIn var(--transition-normal) forwards}.animate-pulse{animation:pulse 2s ease-in-out infinite}.animate-glitch{animation:glitch .3s ease-in-out}.animate-slide-up{animation:slideUp var(--transition-normal) forwards}.glass{background:#ffffff0d;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,.08)}.card{background:var(--sky-card-bg);border:1px solid var(--sky-card-border);border-radius:var(--radius-lg);padding:var(--space-md);transition:all var(--transition-normal)}.card:hover{border-color:var(--sky-accent);box-shadow:var(--shadow-glow)}@media (max-width: 380px){html{font-size:14px}}@media (min-width: 768px){html{font-size:18px}}