@keyframes spin{to{transform:rotate(360deg)}}body.theme-dark{--background-color:#121212;--card-bg-color:#1e1e1e;--card-bg:#1e1e1e;--bg-color:#121212;--text-color:#e0e0e0;--text-light:#a0a0a0;--border-color:#333333;--primary-color:#6b8cb8;--primary-dark:#4a6fa5;--primary-light:#8ba9d0}body.theme-dark .card,body.theme-dark .navbar{background-color:#1e1e1e}body.theme-dark .contact-form input,body.theme-dark .contact-form textarea,body.theme-dark .form-control{background-color:#2d2d2d;color:#e0e0e0;border-color:#444}body.theme-dark .form-control:focus{border-color:var(--primary-light);box-shadow:0 0 0 .2rem rgba(107,140,184,.25)}body.theme-dark .contact-form input::placeholder,body.theme-dark .contact-form textarea::placeholder{color:rgba(224,224,224,.7)}.notification{position:fixed;bottom:20px;right:20px;padding:15px 20px;border-radius:var(--border-radius-md);color:#fff;font-weight:500;z-index:1050;transform:translateY(100px);opacity:0;transition:transform .3s ease,opacity .3s ease;max-width:300px}.notification.show{transform:translateY(0);opacity:1}.notification-success{background-color:var(--success-color)}.notification-error{background-color:var(--error-color)}.notification-warning{background-color:var(--warning-color);color:var(--text-color)}.notification-info{background-color:var(--info-color)}.tool-card{display:flex;flex-direction:column;height:100%;transition:transform var(--transition-normal),box-shadow var(--transition-normal)}.tool-card-icon{display:inline-flex;align-items:center;justify-content:center;width:56px;height:56px;border-radius:14px;font-size:1.45rem;margin-bottom:var(--spacing-md);color:var(--primary-color);background:rgba(74,111,165,.1);transition:background var(--transition-normal),color var(--transition-normal),transform var(--transition-normal)}.card.tool-card:hover .tool-card-icon{background:var(--primary-color);color:#fff;transform:translateY(-2px) scale(1.05)}body.theme-dark .tool-card-icon{background:rgba(139,169,208,.14)}.tool-card-title{font-size:var(--font-size-lg);margin-bottom:var(--spacing-sm)}.tool-card-description{color:var(--text-light);margin-bottom:var(--spacing-md);flex-grow:1}.tool-card-link{margin-top:auto;align-self:flex-start}.card-hover{transform:translateY(-10px);box-shadow:var(--shadow-lg)}.spinner,body.theme-dark .spinner{border-top-color:var(--primary-color)}.spinner{display:inline-block;width:40px;height:40px;border:4px solid rgba(0,0,0,.1);border-radius:50%;animation:spin 1s ease-in-out infinite}body.theme-dark .spinner{border:4px solid rgba(255,255,255,.1)}.result-container{background-color:var(--card-bg-color);border:1px solid var(--border-color);border-radius:var(--border-radius-md);padding:var(--spacing-md);margin-top:var(--spacing-md);position:relative}.copy-btn{position:absolute;top:10px;right:10px;background:0 0;border:0;color:var(--primary-color);cursor:pointer;font-size:var(--font-size-md)}.copy-btn:hover{color:var(--primary-dark)}input[type=range]{-webkit-appearance:none;width:100%;height:8px;border-radius:5px;background:var(--border-color);outline:0}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:20px;height:20px;border-radius:50%;background:var(--primary-color);cursor:pointer}input[type=range]::-moz-range-thumb{width:20px;height:20px;border-radius:50%;background:var(--primary-color);cursor:pointer;border:0}.custom-checkbox{display:flex;align-items:center;margin-bottom:var(--spacing-sm);cursor:pointer}.custom-checkbox input[type=checkbox]{position:absolute;opacity:0;cursor:pointer;height:0;width:0}.checkmark{height:20px;width:20px;background-color:var(--card-bg-color);border:1px solid var(--border-color);border-radius:var(--border-radius-sm);margin-right:var(--spacing-sm);position:relative}.custom-checkbox:hover input~.checkmark{background-color:var(--background-color)}.custom-checkbox input:checked~.checkmark{background-color:var(--primary-color);border-color:var(--primary-color)}.checkmark:after{content:"";position:absolute;display:none}.custom-checkbox input:checked~.checkmark:after{display:block}.custom-checkbox .checkmark:after{left:7px;top:3px;width:5px;height:10px;border:solid #fff;border-width:0 2px 2px 0;transform:rotate(45deg)}.tooltip{position:relative;display:inline-block}.tooltip .tooltip-text{visibility:hidden;width:120px;background-color:var(--text-color);color:var(--card-bg-color);text-align:center;border-radius:var(--border-radius-sm);padding:5px;position:absolute;z-index:1;bottom:125%;left:50%;margin-left:-60px;opacity:0;transition:opacity .3s}.tooltip .tooltip-text::after{content:"";position:absolute;top:100%;left:50%;margin-left:-5px;border-width:5px;border-style:solid;border-color:var(--text-color) transparent transparent transparent}.tooltip:hover .tooltip-text{visibility:visible;opacity:1}body.theme-dark .btn-icon{border-radius:0;border:0;color:#fff;background-color:#1e1e1e;cursor:pointer}.btn-icon{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:10px;border:1px solid var(--border-color);background:rgba(74,111,165,.08);color:var(--text-color);font-size:1rem;transition:color var(--transition-fast),border-color var(--transition-fast),background var(--transition-fast),transform var(--transition-fast)}.btn-icon:hover{color:var(--primary-color);border-color:var(--primary-color);transform:translateY(-1px)}body.theme-dark .field-clear-btn{background-color:rgba(139,169,208,.2);color:#c8d3e0}body.theme-dark .field-clear-btn:focus-visible,body.theme-dark .field-clear-btn:hover{background-color:var(--primary-color);color:#fff}