/* Base reset and typography */
*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: var(--x-text-base);
    font-weight: 400;
    line-height: 1.6;
    letter-spacing: -0.006em;
    color: var(--x-gray-950);
    background-color: var(--x-gray-100);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    margin: 0;
    padding: 0;
}

/* Skip to content — screen reader + keyboard accessible */
.x-skip-link {
    position: absolute;
    top: -100%;
    left: var(--x-space-4);
    z-index: 9999;
    padding: var(--x-space-2) var(--x-space-4);
    background: var(--x-gray-950);
    color: var(--x-white);
    font-size: var(--x-text-sm);
    font-weight: 500;
    border-radius: var(--x-radius-sm);
    text-decoration: none;
}

.x-skip-link:focus {
    top: var(--x-space-2);
}

a {
    color: var(--x-accent);
    text-decoration: none;
    transition: color var(--x-duration-fast) var(--x-ease);
}

a:hover {
    color: var(--x-accent-hover);
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.25;
    letter-spacing: -0.015em;
    color: var(--x-gray-950);
    margin-top: 0;
    text-wrap: balance;
}

h3 {
    font-size: var(--x-text-xl);
}

h4 {
    font-size: var(--x-text-lg);
}

code, pre, .monospace {
    font-family: 'SF Mono', ui-monospace, 'Cascadia Mono', 'Fira Mono', monospace;
    font-size: 0.9em;
}

::selection {
    background-color: var(--x-accent);
    color: var(--x-white);
}

/* Focus visible — keyboard users only */
:focus-visible {
    outline: 2px solid var(--x-accent);
    outline-offset: 2px;
}

:focus:not(:focus-visible) {
    outline: none;
}

/* Tabular numbers for financial data */
.tabular-nums {
    font-variant-numeric: tabular-nums;
}