/* The React homepage and HTML pages share these design primitives. */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg: #000000;
    --surface: #111111;
    --surface-2: #1c1c1e;
    --text: #f5f5f7;
    --text-secondary: #86868b;
    --text-tertiary: #6e6e73;
    --danger: #ff3b30;
    --accent: #a78bfa;
    --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-display: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-mono: "SF Mono", Menlo, Consolas, monospace;
}

html {
    background: var(--bg);
    scrollbar-gutter: stable;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: var(--bg);
    color: var(--text);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    letter-spacing: -0.01em;
}

h1, h2, h3, h4 {
    font-family: var(--font-display);
}

.site-title {
    font-size: clamp(36px, 5vw, 56px);
    font-weight: 600;
    letter-spacing: -0.045em;
    line-height: 1.08;
    margin-bottom: 16px;
    color: #fff;
    text-wrap: balance;
}

.site-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 44px;
    max-width: 100%;
    padding: 12px 24px;
    border: 1px solid transparent;
    border-radius: 12px;
    font-family: var(--font-sans);
    font-size: 15px;
    line-height: 1.2;
    letter-spacing: -0.01em;
    text-align: center;
    text-decoration: none;
    cursor: pointer;
    transition: opacity 0.2s, border-color 0.2s, color 0.2s, background 0.2s;
}

.site-button-primary {
    background: #fff;
    color: #000;
    font-weight: 600;
}

.site-button-primary:hover {
    opacity: 0.85;
}

.site-button-secondary {
    background: transparent;
    color: rgba(255, 255, 255, 0.8);
    border-color: rgba(255, 255, 255, 0.2);
    font-weight: 500;
}

.site-button-secondary:hover {
    border-color: rgba(255, 255, 255, 0.4);
    color: #fff;
    background: rgba(255, 255, 255, 0.06);
}

.site-button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.site-card {
    background: var(--surface);
    border: 1px solid rgba(255, 255, 255, 0.09);
    border-radius: 16px;
}

a:focus-visible,
button:focus-visible,
summary:focus-visible,
input:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible {
    outline: 2px solid rgba(255, 255, 255, 0.7);
    outline-offset: 4px;
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .site-button { transition: none; }
}