/* ==========================================================================
   BASE — Variables CSS, reset de tipografía y anulaciones de Milligram
   ========================================================================== */

/* ── Variables ─────────────────────────────────────────────────────────────── */
:root {
    /* Colores de marca */
    --zz-primary:       #1D6EFA;
    --zz-primary-dark:  #0B50D4;
    --zz-dark:          #0C1B33;
    --zz-dark-lighter:  #1a2c4a;

    /* Acento — urgencia, ofertas, badges */
    --zz-accent:        #F59E0B;
    --zz-accent-dark:   #D97706;

    /* Paleta neutra */
    --zz-text:          #3d4554;
    --zz-text-light:    #7a8599;
    --zz-bg:            #ffffff;
    --zz-surface:       #F5F7FA;
    --zz-surface-alt:   #EBF0FB;
    --zz-border:        #D8DEE9;

    /* Feedback */
    --zz-success:       #22c55e;
    --zz-danger:        #ef4444;
    --zz-warning:       #f59e0b;

    /* Tipografía */
    --zz-font:          -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --zz-font-size:     16px;
    --zz-line-height:   1.65;

    /* Layout */
    --zz-container:     1320px;
    --zz-gap:           24px;
    --zz-section-gap:   80px;

    /* Forma */
    --zz-radius:        6px;
    --zz-radius-lg:     12px;
    --zz-radius-pill:   999px;

    /* Sombras */
    --zz-shadow-sm:     0 2px 8px rgba(12, 27, 51, 0.07);
    --zz-shadow:        0 4px 20px rgba(12, 27, 51, 0.10);
    --zz-shadow-lg:     0 12px 36px rgba(12, 27, 51, 0.14);
    --zz-shadow-hover:  0 10px 32px rgba(29, 110, 250, 0.22);

    /* Transiciones */
    --zz-transition:    0.18s ease;
    --zz-transition-lg: 0.28s ease;

    /* Header */
    --zz-header-height:    60px;
    --zz-topbar-height:    40px;
    --zz-header-z:         99999;
}

/* ── Reset global ───────────────────────────────────────────────────────────── */
*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    font-size: var(--zz-font-size);
    scroll-behavior: smooth;
}

body {
    font-family: var(--zz-font);
    font-size: 1rem;
    line-height: var(--zz-line-height);
    color: var(--zz-text);
    background-color: var(--zz-bg);
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    letter-spacing: -0.005em;
}

/* ── Prevenir scroll horizontal ─────────────────────────────────────────────── */
/* iOS Safari requiere overflow-x en AMBOS html y body para prevenir el scroll  */
/* horizontal táctil. overflow-x:clip no crea scroll container (no rompe sticky)*/
html {
    overflow-x: hidden; /* fallback Safari < 15.4 */
    overflow-x: clip;
}

body {
    overflow-x: clip; /* iOS Safari ignora html solo — necesita body también */
    max-width: 100%;  /* refuerza que body no exceda el viewport */
}

/* ── Anular tipografía de Milligram ─────────────────────────────────────────── */
/* Milligram establece Raleway y tamaños muy grandes — los sobreescribimos */
body,
button,
input,
select,
textarea {
    font-family: var(--zz-font);
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--zz-font);
    font-weight: 700;
    line-height: 1.2;
    color: var(--zz-dark);
    margin-top: 0;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
    text-wrap: balance;
}

h1 { font-size: 2.4rem; }
h2 { font-size: 2.0rem; }
h3 { font-size: 1.6rem; }
h4 { font-size: 1.3rem; }
h5 { font-size: 1.1rem; }
h6 { font-size: 1.0rem; }

p {
    margin-top: 0;
    margin-bottom: 1rem;
}

/* ── Anular colores de Milligram ────────────────────────────────────────────── */
a {
    color: var(--zz-primary);
    text-decoration: none;
    transition: color var(--zz-transition);
}

a:hover,
a:focus {
    color: var(--zz-primary-dark);
    text-decoration: underline;
}

/* ── Anular botones de Milligram ────────────────────────────────────────────── */
/* Milligram usa pill-shape morado — rediseñamos rectangular */
.button,
button,
input[type="submit"],
input[type="reset"],
input[type="button"] {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 20px;
    font-family: var(--zz-font);
    font-size: 0.875rem;
    font-weight: 600;
    line-height: 1;
    color: #fff;
    background-color: var(--zz-primary);
    border: 2px solid var(--zz-primary);
    border-radius: var(--zz-radius);
    cursor: pointer;
    text-decoration: none;
    transition: background-color var(--zz-transition), border-color var(--zz-transition), color var(--zz-transition);
    letter-spacing: 0.02em;
    margin-bottom: 0; /* anula margin-bottom:1rem de Milligram */
}

.button:hover,
button:hover,
input[type="submit"]:hover,
input[type="button"]:hover {
    background-color: var(--zz-primary-dark);
    border-color: var(--zz-primary-dark);
    color: #fff;
    text-decoration: none;
}

.button--outline,
.button.button-secondary {
    color: var(--zz-primary);
    background-color: transparent;
}

.button--outline:hover,
.button.button-secondary:hover {
    color: #fff;
    background-color: var(--zz-primary);
}

.button--dark {
    background-color: var(--zz-dark);
    border-color: var(--zz-dark);
}

.button--dark:hover {
    background-color: var(--zz-dark-lighter);
    border-color: var(--zz-dark-lighter);
}

/* ── Inputs — anular Milligram ──────────────────────────────────────────────── */
input[type="text"],
input[type="email"],
input[type="tel"],
input[type="url"],
input[type="number"],
input[type="search"],
input[type="password"],
select,
textarea {
    width: 100%;
    padding: 10px 14px;
    font-family: var(--zz-font);
    font-size: 0.9rem;
    color: var(--zz-text);
    background-color: var(--zz-bg);
    border: 1px solid var(--zz-border);
    border-radius: var(--zz-radius);
    transition: border-color var(--zz-transition), box-shadow var(--zz-transition);
    outline: none;
    appearance: none;
    -webkit-appearance: none;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="tel"]:focus,
input[type="url"]:focus,
input[type="number"]:focus,
input[type="search"]:focus,
input[type="password"]:focus,
select:focus,
textarea:focus {
    border-color: var(--zz-primary);
    box-shadow: 0 0 0 3px rgba(63, 130, 239, 0.15);
}

textarea {
    resize: vertical;
    min-height: 120px;
}

label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--zz-text);
    margin-bottom: 6px;
}

/* ── Imágenes ───────────────────────────────────────────────────────────────── */
img,
svg {
    max-width: 100%;
    height: auto;
    vertical-align: middle;
}

/* ── Accesibilidad ──────────────────────────────────────────────────────────── */
.screen-reader-text {
    clip: rect(1px, 1px, 1px, 1px);
    clip-path: inset(50%);
    height: 1px;
    overflow: hidden;
    position: absolute;
    white-space: nowrap;
    width: 1px;
}

.skip-link {
    background: var(--zz-primary);
    color: #fff;
    font-size: 0.875rem;
    font-weight: 600;
    padding: 8px 16px;
    position: absolute;
    top: -100px;
    left: 16px;
    z-index: 999;
    border-radius: 0 0 var(--zz-radius) var(--zz-radius);
    transition: top 0.2s;
}

.skip-link:focus {
    top: 0;
    color: #fff;
    text-decoration: none;
}

/* ── Utilidades ─────────────────────────────────────────────────────────────── */
.text-center { text-align: center; }
.text-right  { text-align: right; }
.visually-hidden { @extend .screen-reader-text; }