/* ============================================================
   Clínica Las Retamas — Design System
   Tokens, reset, typography, utilities.
   Loaded BEFORE page-specific stylesheets on every page.
   ============================================================ */

:root {
    /* Colores — azul primario de la marca + acento cálido */
    --color-primary: #1B77BB;
    --color-primary-dark: #155a8c;
    --color-primary-soft: #e8f2fa;
    --color-accent: #e89a7a;
    --color-accent-soft: #fdecee;

    --color-ink: #1a2a3a;
    --color-ink-soft: #2a3642;
    --color-ink-muted: #5a6b7a;
    --color-ink-subtle: #8a96a2;

    --color-bg: #fbfaf7;
    --color-bg-alt: #f4f2ed;
    --color-surface: #ffffff;
    --color-border: #e5e7eb;
    --color-border-strong: #cfd3d8;

    --color-success-bg: #d4edda;
    --color-success-ink: #155724;
    --color-error-bg: #fdecee;
    --color-error-ink: #842029;
    --color-error-border: #f5c2c7;

    /* Espaciado — escala de 8px */
    --space-0: 0.25rem;   /* 4px */
    --space-1: 0.5rem;    /* 8px */
    --space-2: 1rem;      /* 16px */
    --space-3: 1.5rem;    /* 24px */
    --space-4: 2rem;      /* 32px */
    --space-5: 3rem;      /* 48px */
    --space-6: 4rem;      /* 64px */
    --space-7: 6rem;      /* 96px */

    /* Radios */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-pill: 999px;

    /* Sombras */
    --shadow-xs: 0 1px 2px rgba(16, 32, 48, .05);
    --shadow-sm: 0 1px 2px rgba(16, 32, 48, .06), 0 1px 3px rgba(16, 32, 48, .08);
    --shadow-md: 0 4px 12px rgba(16, 32, 48, .08), 0 2px 4px rgba(16, 32, 48, .06);
    --shadow-lg: 0 12px 32px rgba(16, 32, 48, .10), 0 4px 8px rgba(16, 32, 48, .06);

    /* Tipografía */
    --font-display: 'Playfair Display', Georgia, 'Times New Roman', serif;
    --font-body: 'Inter', 'Montserrat', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;

    /* Escala de tamaños fluida */
    --text-xs:   clamp(0.75rem, 0.73rem + 0.1vw, 0.8125rem);
    --text-sm:   clamp(0.875rem, 0.85rem + 0.15vw, 0.9375rem);
    --text-base: clamp(1rem, 0.95rem + 0.2vw, 1.125rem);
    --text-lg:   clamp(1.125rem, 1.05rem + 0.4vw, 1.375rem);
    --text-xl:   clamp(1.375rem, 1.2rem + 0.8vw, 1.875rem);
    --text-2xl:  clamp(1.75rem, 1.4rem + 1.5vw, 2.75rem);
    --text-3xl:  clamp(2.25rem, 1.7rem + 2.5vw, 4rem);

    /* Anchos de contenido */
    --container-narrow: 760px;
    --container: 1180px;
    --container-wide: 1400px;

    /* Transiciones */
    --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
    --transition: 260ms var(--ease-out);
}

/* ------------------------------------------------------------
   Reset moderno ligero
   ------------------------------------------------------------ */
*,
*::before,
*::after {
    box-sizing: border-box;
}

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

body {
    margin: 0;
    font-family: var(--font-body);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--color-ink);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img,
picture,
video,
canvas,
svg {
    display: block;
    max-width: 100%;
    height: auto;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.15;
    color: var(--color-ink);
    margin: 0 0 var(--space-2);
    letter-spacing: -0.01em;
}

h1 { font-size: var(--text-3xl); }
h2 { font-size: var(--text-2xl); }
h3 { font-size: var(--text-xl); }
h4 { font-size: var(--text-lg); }

p {
    margin: 0 0 var(--space-2);
}

a {
    color: var(--color-primary);
    transition: color var(--transition);
}

a:hover {
    color: var(--color-primary-dark);
}

/* ------------------------------------------------------------
   Utilidades
   ------------------------------------------------------------ */
.is-hidden {
    display: none !important;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.skip-link {
    position: absolute;
    top: -60px;
    left: 16px;
    background: var(--color-primary);
    color: #fff;
    padding: 10px 18px;
    border-radius: var(--radius-pill);
    text-decoration: none;
    font-weight: 600;
    z-index: 9999;
    transition: top var(--transition);
}

.skip-link:focus,
.skip-link:focus-visible {
    top: 16px;
    color: #fff;
    outline: 2px solid #fff;
    outline-offset: 2px;
}

/* Etiqueta corta encima de un título grande, estilo editorial */
.eyebrow {
    display: inline-block;
    font-family: var(--font-body);
    font-size: var(--text-sm);
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-primary);
    margin-bottom: var(--space-1);
}

/* Botones base */
.btn,
button.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-1);
    padding: 0.875rem 1.75rem;
    border-radius: var(--radius-pill);
    border: 2px solid transparent;
    font-family: var(--font-body);
    font-size: var(--text-base);
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    min-height: 48px;
    line-height: 1;
    transition: transform var(--transition), background-color var(--transition),
                border-color var(--transition), color var(--transition),
                box-shadow var(--transition);
}

.btn--primary {
    background-color: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

.btn--primary:hover {
    background-color: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    color: #fff;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn--ghost {
    background-color: transparent;
    color: var(--color-ink);
    border-color: var(--color-border-strong);
}

.btn--ghost:hover {
    background-color: var(--color-primary-soft);
    border-color: var(--color-primary);
    color: var(--color-primary-dark);
}

.btn--full-width {
    width: 100%;
}

.btn:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 3px;
}

/* Foco global más visible */
:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

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

/* ============================================================
   Footer — site-wide
   ============================================================ */
.site-footer {
    background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-alt) 100%);
    border-top: 1px solid var(--color-border);
    margin-top: var(--space-7);
    color: var(--color-ink-soft);
}

.site-footer__inner {
    max-width: var(--container);
    margin: 0 auto;
    padding: var(--space-6) var(--space-3) var(--space-5);
    display: grid;
    grid-template-columns: 1.5fr 1fr 1.3fr 1fr;
    gap: var(--space-5);
}

.site-footer__brand {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.site-footer__logo {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.site-footer__logo img {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-pill);
}

.site-footer__logo > div {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.site-footer__name {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: var(--text-lg);
    color: var(--color-ink);
    letter-spacing: -0.01em;
}

.site-footer__tagline {
    font-family: var(--font-body);
    font-size: var(--text-xs);
    color: var(--color-ink-muted);
    letter-spacing: 0.04em;
}

.site-footer__blurb {
    font-family: var(--font-body);
    font-size: var(--text-sm);
    line-height: 1.6;
    color: var(--color-ink-muted);
    max-width: 32ch;
    margin: 0;
}

.site-footer__heading {
    font-family: var(--font-body);
    font-size: var(--text-xs);
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--color-primary);
    margin: 0 0 var(--space-2);
}

.site-footer__col ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.site-footer__col li {
    font-family: var(--font-body);
    font-size: var(--text-sm);
    line-height: 1.55;
    color: var(--color-ink-soft);
}

.site-footer__col a {
    color: var(--color-ink-soft);
    text-decoration: none;
    transition: color var(--transition);
}

.site-footer__col a:hover {
    color: var(--color-primary);
}

.site-footer__bottom {
    border-top: 1px solid var(--color-border);
    padding: var(--space-3);
    max-width: var(--container);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-2);
    flex-wrap: wrap;
}

.site-footer__bottom p {
    font-family: var(--font-body);
    font-size: var(--text-xs);
    color: var(--color-ink-muted);
    margin: 0;
    letter-spacing: 0.02em;
}

.site-footer__credit {
    font-weight: 500;
}

@media (max-width: 900px) {
    .site-footer__inner {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-4);
        padding: var(--space-5) var(--space-3) var(--space-4);
    }

    .site-footer__brand {
        grid-column: 1 / -1;
    }
}

@media (max-width: 560px) {
    .site-footer__inner {
        grid-template-columns: 1fr;
        gap: var(--space-3);
    }

    .site-footer__col ul {
        gap: var(--space-2);
    }

    .site-footer__col li {
        line-height: 2;
        min-height: 40px;
    }

    .site-footer__blurb {
        max-width: 100%;
    }

    .site-footer__bottom {
        flex-direction: column;
        text-align: center;
        padding: var(--space-2) var(--space-3) var(--space-3);
    }
}

/* ============================================================
   Navigation — shared across all pages
   ============================================================ */

/* Indicador sutil bajo los enlaces de la nav */
.navList a {
    position: relative;
}

.navList a::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: 6px;
    transform: translateX(-50%) scaleX(0);
    transform-origin: center;
    width: 60%;
    height: 2px;
    background: var(--color-primary);
    border-radius: var(--radius-pill);
    transition: transform var(--transition);
}

.navList a:hover::after,
.navList a:focus-visible::after,
.navList a[aria-current="page"]::after {
    transform: translateX(-50%) scaleX(1);
}

/* Estado activo: la página actual queda destacada */
.navList a[aria-current="page"] {
    color: var(--color-primary);
    font-weight: 600;
}

/* Sombra sutil al hacer scroll */
.nav-container {
    transition: background-color var(--transition), box-shadow var(--transition);
}

.nav-container.is-scrolled {
    box-shadow: 0 4px 16px rgba(16, 32, 48, 0.08);
    background: rgba(255, 255, 255, 0.95);
}

/* Indicadores del móvil: ocultar underline en vista apilada */
@media (max-width: 1200px) {
    .navList a::after {
        display: none;
    }

    .navList a[aria-current="page"] {
        background: var(--color-primary-soft);
        border-radius: var(--radius-md);
    }
}