:root {
    --uc-azul: #003C71;
    --uc-azul-claro: #1F5AA8;
    --uc-azul-tinte: #E8EEF7;
    --uc-blanco: #FFFFFF;
    --uc-gris-fondo: #F4F6FA;
    --uc-gris-borde: #D8DEE8;
    --uc-texto: #1A1A1A;
    --uc-texto-suave: #5A6478;
    --uc-error: #B3261E;
    --festivo-amarillo: #FFD75A;
    --festivo-amarillo-fuerte: #FFC107;
    --sombra: 0 2px 8px rgba(0, 60, 113, 0.08);
    --sombra-hover: 0 6px 20px rgba(0, 60, 113, 0.15);
    --radio: 10px;
}

* { box-sizing: border-box; -webkit-tap-highlight-color: rgba(0, 60, 113, 0.18); }

html {
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
}
html, body {
    margin: 0;
    padding: 0;
    background: var(--uc-gris-fondo);
    color: var(--uc-texto);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.55;
}
body { overflow-x: hidden; }                    /* red de seguridad anti scroll horizontal */
img { max-width: 100%; height: auto; }          /* las imágenes nunca rompen el ancho */

a { color: var(--uc-azul-claro); text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.site-header {
    background: var(--uc-azul);
    color: var(--uc-blanco);
    padding: 16px 0;
    box-shadow: var(--sombra);
}
.header-inner { display: flex; align-items: center; }
.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--uc-blanco);
    text-decoration: none;
}
.brand:hover { text-decoration: none; }
.brand-mark {
    display: block;
    width: 48px;
    height: 48px;
    object-fit: contain;
    flex-shrink: 0;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-text strong { font-size: 18px; }
.brand-text small { font-size: 12px; opacity: 0.85; }

/* Main */
.site-main { padding: 40px 0 60px; }

/* Footer */
.site-footer {
    border-top: 1px solid var(--uc-gris-borde);
    padding: 18px 0;
    color: var(--uc-texto-suave);
    text-align: center;
    background: var(--uc-blanco);
}

/* ========== Home rediseñado ========== */

/* Hero full-bleed con gradiente azul UC */
.home-hero {
    position: relative;
    width: 100vw;
    margin-left: calc(-50vw + 50%);
    margin-top: -40px;            /* absorbe el padding-top de .site-main */
    margin-bottom: 12px;
    padding: 72px 24px 88px;
    text-align: center;
    color: var(--uc-blanco);
    background:
        radial-gradient(120% 80% at 100% 0%, rgba(255, 215, 90, 0.18), transparent 55%),
        radial-gradient(80% 60% at 0% 100%, rgba(255, 255, 255, 0.10), transparent 60%),
        linear-gradient(135deg, var(--uc-azul) 0%, var(--uc-azul-claro) 100%);
    overflow: hidden;
}
.home-hero__inner {
    max-width: 720px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}
.home-hero__logo {
    width: 100px;
    height: 100px;
    object-fit: contain;
    margin: 0 auto 18px;
    display: block;
    filter: drop-shadow(0 4px 16px rgba(0, 0, 0, 0.18));
}
.home-hero h1 {
    margin: 0 0 14px;
    font-size: clamp(28px, 4vw, 42px);
    font-weight: 800;
    color: var(--uc-blanco);
    letter-spacing: -0.3px;
    line-height: 1.15;
}
.home-hero p {
    margin: 0 auto;
    max-width: 540px;
    color: rgba(255, 255, 255, 0.88);
    font-size: clamp(15px, 1.6vw, 18px);
    line-height: 1.55;
}

/* Sección con título */
.home-section {
    margin-top: 56px;
    margin-bottom: 56px;
}
.home-section__title {
    color: var(--uc-azul);
    font-size: clamp(22px, 2.5vw, 28px);
    font-weight: 700;
    margin: 0 0 28px;
    text-align: center;
}
.home-section__title::after {
    content: '';
    display: block;
    width: 56px;
    height: 3px;
    background: var(--uc-azul-claro);
    border-radius: 2px;
    margin: 10px auto 0;
}

/* Grid de utilidades */
.util-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

/* Tarjetas con personalidad */
.util-card {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 16px;
    background: var(--uc-blanco);
    border: 1px solid var(--uc-gris-borde);
    border-radius: 14px;
    padding: 28px;
    color: var(--uc-texto);
    text-decoration: none;
    overflow: hidden;
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
    --accent: var(--uc-azul);
    --accent-tinte: var(--uc-azul-tinte);
}
.util-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 5px; height: 100%;
    background: var(--accent);
    transition: width 0.2s ease;
}
.util-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 14px 32px rgba(0, 60, 113, 0.16);
    border-color: var(--accent);
    text-decoration: none;
}
.util-card:hover::before { width: 10px; }

.util-card__icon {
    width: 72px;
    height: 72px;
    border-radius: 16px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-tinte);
    color: var(--accent);
}
.util-card__body { flex: 1; }
.util-card h3 {
    margin: 0 0 8px;
    font-size: 20px;
    font-weight: 700;
    color: var(--uc-texto);
}
.util-card p {
    margin: 0;
    color: var(--uc-texto-suave);
    font-size: 14px;
    line-height: 1.55;
}
.util-card__cta {
    font-weight: 700;
    color: var(--accent);
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.util-card--qr {
    --accent: var(--uc-azul);
    --accent-tinte: var(--uc-azul-tinte);
}
.util-card--sorteo {
    --accent: #B47800;
    --accent-tinte: #FFF4DA;
}


/* Breadcrumbs */
.breadcrumbs {
    display: flex; gap: 8px; align-items: center;
    color: var(--uc-texto-suave);
    font-size: 14px;
    margin-bottom: 18px;
}

/* QR page */
.qr-page__intro h1 {
    color: var(--uc-azul);
    margin: 0 0 6px;
    font-size: clamp(22px, 2.6vw, 28px);
}
.qr-page__intro p { margin: 0 0 24px; color: var(--uc-texto-suave); }

.qr-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}
@media (min-width: 760px) {
    .qr-layout { grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr); }
}

.qr-form, .qr-preview-card {
    background: var(--uc-blanco);
    border: 1px solid var(--uc-gris-borde);
    border-radius: var(--radio);
    padding: 22px;
    box-shadow: var(--sombra);
}
.campo { margin-bottom: 16px; }
.campo:last-of-type { margin-bottom: 0; }
.qr-form label { display: block; font-weight: 600; margin-bottom: 8px; color: var(--uc-texto); }
.qr-form .req { color: var(--uc-error); font-weight: 700; }
.qr-form textarea,
.qr-form input[type="text"] {
    width: 100%;
    border: 1px solid var(--uc-gris-borde);
    border-radius: 8px;
    padding: 12px;
    font: inherit;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.qr-form textarea { resize: vertical; min-height: 120px; }
.qr-form textarea:focus,
.qr-form input[type="text"]:focus {
    outline: none;
    border-color: var(--uc-azul-claro);
    box-shadow: 0 0 0 3px rgba(31, 90, 168, 0.18);
}
.campo-check label.check {
    display: flex; align-items: center; gap: 10px;
    font-weight: 500; margin-bottom: 0; cursor: pointer;
    user-select: none;
}
.campo-check input[type="checkbox"] {
    width: 18px; height: 18px;
    accent-color: var(--uc-azul);
    cursor: pointer;
}
.hint { display: block; color: var(--uc-texto-suave); font-size: 12px; margin-top: 6px; }

.qr-actions {
    display: flex; gap: 10px; margin-top: 18px; flex-wrap: wrap;
}
.btn {
    border: 1px solid transparent;
    padding: 10px 18px;
    border-radius: 8px;
    font: inherit;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}
.btn-primary { background: var(--uc-azul); color: var(--uc-blanco); }
.btn-primary:hover { background: var(--uc-azul-claro); }
.btn-secondary { background: var(--uc-blanco); color: var(--uc-azul); border-color: var(--uc-azul); }
.btn-secondary:hover { background: var(--uc-azul-tinte); }
.btn:disabled { opacity: 0.55; cursor: not-allowed; }

.qr-error {
    margin: 14px 0 0;
    color: var(--uc-error);
    background: #FDECEA;
    border: 1px solid #F5C6C2;
    padding: 10px 12px;
    border-radius: 8px;
    font-size: 14px;
}

.qr-preview-card h2 {
    margin: 0 0 14px;
    font-size: 16px;
    color: var(--uc-azul);
}
.qr-preview {
    min-height: 260px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--uc-gris-fondo);
    border-radius: 8px;
    padding: 16px;
}
.qr-preview canvas, .qr-preview img {
    max-width: 100%;
    height: auto;
    display: block;
}
.qr-preview__placeholder { color: var(--uc-texto-suave); font-size: 14px; margin: 0; }

/* ===== Sorteador ===== */

.sorteo-page__intro h1 {
    color: var(--uc-azul);
    margin: 0 0 6px;
    font-size: clamp(22px, 2.6vw, 28px);
}
.sorteo-page__intro p { margin: 0 0 24px; color: var(--uc-texto-suave); }

/* Drop zone */
.sorteo-drop {
    background: var(--uc-blanco);
    border: 2px dashed var(--uc-azul-claro);
    border-radius: var(--radio);
    padding: 40px 24px;
    text-align: center;
    transition: background 0.2s ease, border-color 0.2s ease;
}
.sorteo-drop.is-over {
    background: var(--uc-azul-tinte);
    border-color: var(--uc-azul);
}
.sorteo-drop__icon { color: var(--uc-azul); display: inline-flex; }
.sorteo-drop__primary {
    margin: 8px 0 4px;
    font-size: 18px;
    font-weight: 600;
    color: var(--uc-texto);
}
.sorteo-drop__hint { margin: 4px 0 14px; color: var(--uc-texto-suave); }
.sorteo-drop__formats {
    margin: 18px 0 0;
    color: var(--uc-texto-suave);
    font-size: 13px;
}
.sorteo-drop__formats code {
    background: var(--uc-gris-fondo);
    border: 1px solid var(--uc-gris-borde);
    border-radius: 4px;
    padding: 1px 6px;
    font-size: 12px;
}
.sorteo-drop label.btn { display: inline-block; }

/* Panel */
.sorteo-panel { display: flex; flex-direction: column; gap: 20px; }

.sorteo-meta {
    display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap;
    gap: 14px;
    background: var(--uc-blanco);
    border: 1px solid var(--uc-gris-borde);
    border-radius: var(--radio);
    padding: 14px 18px;
    box-shadow: var(--sombra);
}
.sorteo-meta__contador { font-size: 16px; color: var(--uc-texto); }
.sorteo-meta__contador strong { color: var(--uc-azul); }
.sorteo-meta__cantidad { display: flex; align-items: center; gap: 10px; }
.sorteo-meta__cantidad label { font-weight: 600; color: var(--uc-texto); }
.sorteo-meta__cantidad input {
    width: 70px;
    border: 1px solid var(--uc-gris-borde);
    border-radius: 8px;
    padding: 8px 10px;
    font: inherit;
    text-align: center;
}
.sorteo-meta__cantidad input:focus {
    outline: none;
    border-color: var(--uc-azul-claro);
    box-shadow: 0 0 0 3px rgba(31, 90, 168, 0.18);
}

.sorteo-acciones { display: flex; gap: 10px; flex-wrap: wrap; }
.btn-grande { padding: 14px 26px; font-size: 17px; }
.btn:disabled { opacity: 0.55; cursor: not-allowed; }

/* Stage festivo */
.sorteo-stage {
    position: relative;
    background: var(--uc-azul);
    color: var(--uc-blanco);
    border-radius: var(--radio);
    padding: 36px 24px;
    min-height: 240px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    box-shadow: 0 8px 30px rgba(0, 60, 113, 0.25);
    text-align: center;
    overflow: hidden;
}
.sorteo-stage__watermark {
    position: absolute;
    right: 18px;
    bottom: 14px;
    width: 110px;
    height: 110px;
    object-fit: contain;
    opacity: 0.10;
    pointer-events: none;
    user-select: none;
}
.sorteo-stage__content {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    width: 100%;
}
.sorteo-stage__placeholder {
    margin: 0;
    color: rgba(255, 255, 255, 0.7);
    font-size: 18px;
}
.sorteo-stage__ticker {
    margin: 0;
    font-size: clamp(24px, 6vw, 56px);
    font-weight: 800;
    color: var(--uc-blanco);
    line-height: 1.15;
    letter-spacing: 0.5px;
    word-break: break-word;
    overflow-wrap: anywhere;
    max-width: 100%;
}
.sorteo-stage.animando .sorteo-stage__ticker {
    animation: sorteo-parpadeo 0.1s infinite alternate;
}
@keyframes sorteo-parpadeo {
    from { color: var(--uc-blanco); }
    to   { color: var(--festivo-amarillo); }
}

.sorteo-stage__item {
    display: flex; flex-direction: column; align-items: center; gap: 6px;
    padding: 12px 0;
}
.sorteo-stage__item.revelar {
    animation: sorteo-revelar 0.55s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
@keyframes sorteo-revelar {
    from { transform: scale(0.4); opacity: 0; }
    to   { transform: scale(1); opacity: 1; }
}
.sorteo-stage__label {
    margin: 0;
    font-size: 16px;
    color: rgba(255, 255, 255, 0.85);
    letter-spacing: 0.5px;
    text-transform: uppercase;
}
.sorteo-stage__nombre {
    margin: 0;
    font-size: clamp(24px, 6vw, 56px);
    font-weight: 800;
    color: var(--festivo-amarillo);
    text-shadow: 0 2px 14px rgba(255, 215, 90, 0.35);
    line-height: 1.15;
    word-break: break-word;
    overflow-wrap: anywhere;
    max-width: 100%;
}
.sorteo-stage__sec {
    margin: 0;
    font-size: 18px;
    color: var(--uc-blanco);
    opacity: 0.9;
}

/* Lista ganadores */
.sorteo-ganadores {
    background: var(--uc-blanco);
    border: 1px solid var(--uc-gris-borde);
    border-radius: var(--radio);
    padding: 18px 22px;
    box-shadow: var(--sombra);
}
.sorteo-ganadores h2 {
    margin: 0 0 12px;
    font-size: 18px;
    color: var(--uc-azul);
}
.sorteo-lista { margin: 0; padding-left: 24px; }
.sorteo-lista li { margin: 6px 0; }
.sorteo-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 4px 0;
}
.sorteo-item > span {
    flex: 1;
    min-width: 0;
    word-break: break-word;
    overflow-wrap: anywhere;
}
.sorteo-item__remove {
    background: transparent;
    color: var(--uc-error);
    border: 1px solid var(--uc-error);
    border-radius: 6px;
    padding: 2px 10px;
    font: inherit;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.15s ease, color 0.15s ease;
}
.sorteo-item__remove:hover {
    background: var(--uc-error);
    color: var(--uc-blanco);
}

/* ===== Responsive ===== */

/* Tablet pequeña y móvil grande */
@media (max-width: 768px) {
    .container { padding: 0 16px; }
    .site-main { padding: 28px 0 44px; }

    /* Anti-zoom iOS al tocar inputs y touch targets cómodos */
    .qr-form textarea,
    .qr-form input[type="text"],
    .sorteo-meta__cantidad input { font-size: 16px; }
    .btn { min-height: 44px; }

    /* Header: marca más compacta */
    .brand-mark { width: 40px; height: 40px; }
    .brand-text strong { font-size: 16px; }
    .brand-text small { font-size: 11px; }

    /* Home: hero más compacto en mobile */
    .home-hero {
        padding: 48px 16px 56px;
        margin-top: -28px;
    }
    .home-hero__logo { width: 76px; height: 76px; margin-bottom: 14px; }
    .home-section { margin-top: 36px; margin-bottom: 36px; }
    .home-section__title { margin-bottom: 22px; }

    /* Grid de utilidades */
    .util-grid { gap: 14px; grid-template-columns: 1fr; }
    .util-card { padding: 22px; }
    .util-card__icon { width: 60px; height: 60px; border-radius: 14px; }
    .util-card h3 { font-size: 18px; }


    /* QR: el form y la preview se apilan */
    .qr-form, .qr-preview-card { padding: 18px; }
    .qr-page__intro h1 { font-size: clamp(20px, 5vw, 26px); }

    /* Sorteador */
    .sorteo-drop { padding: 30px 16px; }
    .sorteo-drop__primary { font-size: 16px; }
    .sorteo-drop__formats { font-size: 12px; }
    .sorteo-meta {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
        padding: 14px;
    }
    .sorteo-meta__cantidad { justify-content: space-between; }
    .sorteo-meta__cantidad input { width: 90px; }
    .sorteo-acciones { gap: 8px; }
    .sorteo-acciones .btn { flex: 1 1 auto; }
    .btn-grande { padding: 12px 18px; font-size: 16px; }
    .sorteo-stage { padding: 28px 16px; min-height: 220px; }
    .sorteo-stage__watermark { width: 80px; height: 80px; right: 10px; bottom: 8px; }
    .sorteo-stage__label { font-size: 14px; }
    .sorteo-stage__sec { font-size: 16px; }
    .sorteo-ganadores { padding: 14px 16px; }
    .sorteo-page__intro h1 { font-size: clamp(20px, 5vw, 26px); }
}

/* Móvil compacto */
@media (max-width: 480px) {
    .container { padding: 0 14px; }
    .site-main { padding: 22px 0 36px; }
    .site-header { padding: 12px 0; }

    .brand { gap: 10px; }
    .brand-mark { width: 36px; height: 36px; }
    .brand-text strong { font-size: 15px; }
    .brand-text small { display: none; } /* El subtítulo no entra cómodo */

    /* Home más compacto */
    .home-hero { padding: 40px 14px 48px; margin-top: -22px; }
    .home-hero__logo { width: 64px; height: 64px; }
    .home-hero h1 { font-size: 24px; }
    .home-hero p { font-size: 14px; }
    .home-section { margin-top: 28px; }
    .util-card { padding: 20px; }

    .breadcrumbs { font-size: 13px; margin-bottom: 14px; }

    /* QR: acciones a pantalla completa para que sean pulsables con dedo */
    .qr-actions { flex-direction: column; }
    .qr-actions .btn { width: 100%; }
    .qr-form, .qr-preview-card { padding: 16px; }

    /* Sorteador: botones en una columna */
    .sorteo-acciones { flex-direction: column; }
    .sorteo-acciones .btn { width: 100%; flex: none; }

    /* Lista de ganadores: nombre arriba, botón abajo si no entran */
    .sorteo-item {
        flex-wrap: wrap;
        align-items: flex-start;
        gap: 6px;
    }
    .sorteo-item__remove { align-self: flex-end; }
    .sorteo-lista { padding-left: 20px; }
    .sorteo-lista li { font-size: 15px; }

    /* Stage: nombres más comprimidos */
    .sorteo-stage { padding: 22px 14px; min-height: 180px; }
    .sorteo-stage__watermark { width: 64px; height: 64px; opacity: 0.08; }
    .sorteo-stage__nombre { font-size: clamp(22px, 8vw, 44px); }
    .sorteo-stage__ticker { font-size: clamp(22px, 8vw, 44px); }
    .sorteo-drop { padding: 26px 14px; }
}

/* Móvil ultra estrecho (≤360px / iPhone SE 1ra gen, Galaxy Fold cerrado) */
@media (max-width: 360px) {
    .brand-text strong { font-size: 14px; }
    .hero h1 { font-size: 19px; }
    .util-card { padding: 16px; }
    .sorteo-stage__nombre { font-size: 20px; }
    .sorteo-stage__ticker { font-size: 20px; }
}