/* Custom Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Custom scrollbar for dark mode */
.dark ::-webkit-scrollbar {
    width: 10px;
}

.dark ::-webkit-scrollbar-track {
    background: #1f2937;
}

.dark ::-webkit-scrollbar-thumb {
    background: #4b5563;
    border-radius: 5px;
}

.dark ::-webkit-scrollbar-thumb:hover {
    background: #6b7280;
}

/* Animation for fade in */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

/* Button hover effects */
button {
    transition: all 0.3s ease;
}

/* Input focus styles */
input:focus {
    outline: none;
}

/* Currency button active state */
.currency-btn.active {
    background-color: #000;
    color: #fff;
}

.dark .currency-btn.active {
    background-color: #fff;
    color: #000;
}

/* Loading spinner */
.spinner {
    border: 3px solid #f3f3f3;
    border-top: 3px solid #000;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Responsive images */
img {
    max-width: 100%;
    height: auto;
}

/* Print styles */
@media print {
    header, footer, button {
        display: none;
    }
}