:root {
    --primary-color: #3b82f6;  /* blue-500 */
    --secondary-color: #10b981; /* emerald-500 */
    --bg-color: #ffffff;
    --text-color: #1f2937;
    --border-color: #e5e7eb;
    --hover-bg: #f9fafb;
}

.dark {
    --primary-color: #60a5fa;
    --secondary-color: #34d399;
    --bg-color: #1f2937;
    --text-color: #f9fafb;
    --border-color: #4b5563;
    --hover-bg: #374151;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    margin: 0;
    padding: 0;
    min-height: 100vh;
    transition: background-color 0.3s ease;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
}

.progress-bar {
    transition: width 1.5s ease-in-out;
}

.tooltip {
    transition: all 0.3s ease;
    opacity: 0;
    visibility: hidden;
}

.progress-container:hover .tooltip {
    opacity: 1;
    visibility: visible;
}

.border {
    border: 1px solid var(--border-color);
}

.rounded-lg {
    border-radius: 0.5rem;
}

.hover\:bg-\[\var\(--hover-bg\)\]:hover {
    background-color: var(--hover-bg);
}

.transition-colors {
    transition-property: background-color, border-color, color, fill, stroke;
    transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
    transition-duration: 150ms;
}