:root {
    --ink: #0b1f4b;
    --white: #ffffff;
    --text: #0b1f4b;
    --muted: #3f5985;
    --blue: #1462d4;
    --blue-dark: #0c3b91;
    --sky: #e5f0ff;
    --mist: #f4f8ff;
    --line: #cfe0f7;
    --rule: #a9c9f0;
    --decoration: #1462d4;
    --field-border: #6f8ab3;
    --surface: #ffffff;
    --plans-bg: linear-gradient(180deg, #eaf3ff 0%, #dbe9fc 100%);
    --chrome-bg: var(--mist);
    --chrome-text: var(--muted);
    --chrome-link: var(--blue);
    --chrome-border: var(--line);
    --feature-bg: linear-gradient(145deg, #dbe9ff 0%, #a8c9f5 100%);
    --feature-border: #1769e0;
    --feature-heading: #0b1f4b;
    --feature-copy: #2a4c74;
    --feature-rule: rgba(23, 105, 224, .35);
    --feature-detail-border: #a9c9f0;
    --availability-bg: linear-gradient(145deg, #b7d3f6 0%, #e3efff 58%, #c0d9f7 100%);
    --availability-text: #102b59;
    --availability-accent: #0c3b91;
    --availability-copy: #315882;
    --availability-muted: #3b587e;
    --availability-line: #a9c9f0;
    --radius: 1.25rem;
    --content: 75rem;
    color-scheme: light;
}

:root[data-theme="dark"] {
    --text: #e8eefc;
    --muted: #8fa8d4;
    --blue: #4f8fff;
    --blue-dark: #1c6fe0;
    --sky: #111f3d;
    --mist: #060d1f;
    --line: #1e2f57;
    --rule: #1e2f57;
    --decoration: #a9c8f7;
    --field-border: #5873a3;
    --surface: #0d1c38;
    --plans-bg: var(--surface);
    --feature-heading: #ffffff;
    --feature-copy: #d8e8ff;
    --feature-rule: rgba(216, 232, 255, .4);
    --feature-detail-border: #294579;
    --availability-bg: linear-gradient(145deg, #1150b8, #0b1f4b);
    --availability-text: #ffffff;
    --availability-accent: #b9d7ff;
    --availability-copy: #d8e8ff;
    --availability-muted: #c6dcfb;
    --availability-line: #1769e0;
    color-scheme: dark;
}

:root[data-theme="dark"] .plan-card-featured {
    background: linear-gradient(145deg, #1150b8, #0b1f4b);
    border-color: #1769e0;
}

/* Contorno visible al navegar con teclado (accesibilidad) */
:focus-visible {
    outline: .15rem solid var(--blue);
    outline-offset: .2rem;
}

* {
    box-sizing: border-box;
    transition: background-color .25s ease, color .25s ease, border-color .25s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    color: var(--text);
    background: var(--mist);
    font-family: "DM Sans", sans-serif;
    font-size: 1rem;
    line-height: 1.5;
}

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

/* "Saltar al contenido": oculto hasta que se llega con el teclado */
.skip-link {
    background: var(--blue);
    border-radius: 0 0 .75rem .75rem;
    color: var(--white);
    font-family: "Manrope", sans-serif;
    font-size: .875rem;
    font-weight: 700;
    left: 1rem;
    padding: .75rem 1.1rem;
    position: absolute;
    top: 0;
    transform: translateY(-120%);
    z-index: 60;
}

.skip-link:focus {
    transform: translateY(0);
}

:root[data-theme="dark"] .skip-link {
    color: #0b1f4b;
}

main:focus {
    outline: none;
}

/* Lo que tiene el atributo hidden queda oculto aunque su clase le dé otro display (por ejemplo, .button) */
[hidden] {
    display: none !important;
}