:root {
    --brand-900: #0b1231;
    --brand-800: #111f4b;
    --brand-700: #152a63;
    --brand-600: #183a83;
    --brand-500: #1f5ed4;
    --brand-400: #2f7cf7;
    --brand-300: #7ab6ff;
    --pink-500: #f2569d;
    --pink-400: #ff83c2;
    --aqua-400: #31f1d1;
    --yellow-400: #ffd26b;
    --neutral-50: #f7f8ff;
    --neutral-100: #eef1ff;
    --neutral-200: #d5dcff;
    --neutral-700: #1d2340;
    --neutral-500: #475072;
    --shadow-lg: 0 40px 90px rgba(16, 30, 84, 0.28);
    --shadow-md: 0 25px 60px rgba(24, 55, 120, 0.18);
    --radius-xl: 40px;
    --radius-lg: 28px;
    --radius-md: 18px;
    --radius-sm: 12px;
    --header-height: 84px;
    --font-heading: 'Space Grotesk', 'Poppins', 'Inter', 'Segoe UI', sans-serif;
    --font-body: 'Inter', 'Manrope', 'Segoe UI', sans-serif;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    color: var(--neutral-50);
    background: radial-gradient(circle at top left, rgba(49, 241, 209, 0.12), transparent 45%),
    radial-gradient(circle at 20% 70%, rgba(242, 86, 157, 0.2), transparent 60%),
    linear-gradient(135deg, var(--brand-900), var(--brand-700));
    line-height: 1.7;
    min-height: 100vh;
}

a {
    color: inherit;
    text-decoration: none;
}

a:focus-visible {
    outline: 3px solid var(--aqua-400);
    outline-offset: 4px;
}

img {
    max-width: 100%;
    display: block;
}

p {
    color: rgba(255, 255, 255, 0.85);
}

.skip-link {
    position: absolute;
    left: 1.5rem;
    top: -3rem;
    background: var(--aqua-400);
    color: var(--brand-900);
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    transition: top 0.3s ease;
    z-index: 1000;
}

.skip-link:focus {
    top: 1rem;
}