/* =============================================================================
   ZonaBoxeo — Checkout
   Mobile first: una columna en teléfono, dos a partir de tableta. Sin desborde
   horizontal en ningún ancho, campos cómodos para el pulgar y foco visible para
   quien navega con teclado.
   ========================================================================== */

*, *::before, *::after { box-sizing: border-box; }

:root {
    --tinta:    #16130f;
    --tinta-2:  #5c5249;
    --tinta-3:  #8b8178;
    --papel:    #ffffff;
    --fondo:    #faf8f5;
    --linea:    #e8e2d9;
    --linea-2:  #d6cec3;
    --ok:       #1a7f4b;
    --error:    #c0392b;
    --radio:    14px;
    --sombra:   0 1px 2px rgba(22,19,15,.04), 0 8px 24px -12px rgba(22,19,15,.12);
}

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

body {
    margin: 0;
    font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
    background: var(--fondo);
    color: var(--tinta);
    line-height: 1.55;
    /* Evita cualquier desplazamiento lateral accidental en móvil. */
    overflow-x: hidden;
}

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

.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;
}

/* ------------------------------------------------------------------ cabecera */
.co-head {
    display: flex; align-items: center; gap: 1rem;
    padding: .9rem clamp(1rem, 4vw, 2.5rem);
    background: var(--papel);
    border-bottom: 1px solid var(--linea);
    position: sticky; top: 0; z-index: 10;
}
.co-brand { display: flex; align-items: center; gap: .6rem; text-decoration: none; color: inherit; margin-right: auto; min-width: 0; }
.co-brand img { width: 2.1rem; height: 2.1rem; border-radius: 8px; object-fit: cover; }
.co-mark {
    width: 2.1rem; height: 2.1rem; border-radius: 8px; flex: none;
    background: var(--acento); color: #fff; font-weight: 800; font-size: .8rem;
    display: grid; place-items: center; letter-spacing: -.02em;
}
.co-name { font-weight: 700; letter-spacing: -.02em; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.co-back { color: var(--tinta-2); text-decoration: none; font-size: .88rem; white-space: nowrap; }
.co-back:hover { color: var(--tinta); }

/* ------------------------------------------------------------------- layout */
.co-wrap { max-width: 1120px; margin: 0 auto; padding: clamp(1rem, 4vw, 2.5rem); }

.co-grid { display: grid; grid-template-columns: 1fr; gap: 1.5rem; align-items: start; }

@media (min-width: 900px) {
    .co-grid { grid-template-columns: minmax(0, 1.55fr) minmax(300px, 1fr); gap: 2rem; }
    /* El resumen acompaña al formulario mientras se llena. */
    .co-resumen { position: sticky; top: 5rem; }
}

.co-title { font-size: clamp(1.5rem, 4vw, 1.9rem); letter-spacing: -.03em; margin: 0 0 1.2rem; }

/* ---------------------------------------------------------------- bloques */
.co-block {
    background: var(--papel);
    border: 1px solid var(--linea);
    border-radius: var(--radio);
    padding: 1.15rem 1.15rem 1.3rem;
    margin: 0 0 1rem;
    box-shadow: var(--sombra);
}
.co-block legend {
    font-weight: 700; font-size: .95rem; letter-spacing: -.01em;
    padding: 0 .4rem; margin-left: -.4rem;
}

.co-row { display: flex; flex-wrap: wrap; gap: .85rem; }
.co-row > .co-field { flex: 1 1 12rem; min-width: 0; }
.co-row > .co-grow  { flex: 3 1 16rem; }
.co-row > .co-sm    { flex: 1 1 8rem; }
.co-field { margin-top: .85rem; min-width: 0; }
.co-block > .co-field:first-of-type,
.co-block > .co-row:first-of-type .co-field { margin-top: .6rem; }

label { display: block; font-size: .82rem; font-weight: 600; color: var(--tinta-2); margin-bottom: .3rem; }

input[type=text], input[type=email], input[type=tel], select, textarea {
    width: 100%;
    /* 16px reales: por debajo de eso, iOS hace zoom al enfocar el campo. */
    font: inherit; font-size: 1rem;
    padding: .7rem .8rem;
    border: 1px solid var(--linea-2);
    border-radius: 10px;
    background: var(--fondo);
    color: var(--tinta);
    transition: border-color .15s, background .15s, box-shadow .15s;
}
textarea { resize: vertical; min-height: 4.5rem; }
input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--acento);
    background: var(--papel);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--acento) 18%, transparent);
}
input[aria-invalid="true"], select[aria-invalid="true"] { border-color: var(--error); }

.co-help { display: block; font-size: .76rem; color: var(--tinta-3); margin-top: .3rem; }
.co-err  { display: none; font-size: .78rem; color: var(--error); margin-top: .3rem; font-weight: 500; }
.co-err.show { display: block; }

/* Trampa antibot: fuera de la vista pero sin display:none, que algunos bots detectan. */
.co-hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* ---------------------------------------------------------------- opciones */
.co-options { display: flex; flex-direction: column; gap: .6rem; margin-top: .7rem; }
.co-opt {
    display: flex; align-items: flex-start; gap: .7rem;
    padding: .85rem .9rem;
    border: 1px solid var(--linea-2);
    border-radius: 11px;
    cursor: pointer;
    background: var(--fondo);
    transition: border-color .15s, background .15s;
}
.co-opt:hover { border-color: var(--linea); background: var(--papel); }
.co-opt input { margin: .2rem 0 0; accent-color: var(--acento); flex: none; width: 1.05rem; height: 1.05rem; }
.co-opt:has(input:checked) { border-color: var(--acento); background: var(--papel); }
.co-opt:has(input:focus-visible) { box-shadow: 0 0 0 3px color-mix(in srgb, var(--acento) 18%, transparent); }
.co-opt-txt { flex: 1; min-width: 0; }
.co-opt-nombre { font-weight: 600; font-size: .93rem; }
.co-opt-desc { font-size: .8rem; color: var(--tinta-3); }
.co-opt-precio { font-weight: 700; white-space: nowrap; }
.co-opt-gratis { color: var(--ok); }

.co-check { display: flex; align-items: center; gap: .6rem; font-size: .9rem; color: var(--tinta); margin-top: .5rem; cursor: pointer; }
.co-check input { width: 1.05rem; height: 1.05rem; accent-color: var(--acento); }
.co-check span { font-weight: 500; }

/* ---------------------------------------------------------------- resumen */
.co-resumen {
    background: var(--papel);
    border: 1px solid var(--linea);
    border-radius: var(--radio);
    padding: 1.15rem;
    box-shadow: var(--sombra);
}
.co-resumen h2 { font-size: 1.05rem; letter-spacing: -.02em; margin: 0 0 .9rem; }

.co-items { display: flex; flex-direction: column; gap: .8rem; max-height: 22rem; overflow-y: auto; }
.co-item { display: flex; gap: .7rem; align-items: flex-start; }
.co-item img { width: 3.2rem; height: 3.2rem; border-radius: 9px; object-fit: cover; flex: none; background: var(--fondo); }
.co-item-txt { flex: 1; min-width: 0; }
.co-item-nombre { font-size: .87rem; font-weight: 600; line-height: 1.35; }
.co-item-var { font-size: .78rem; color: var(--tinta-3); }
.co-item-precio { font-size: .87rem; font-weight: 700; white-space: nowrap; }
.co-item-precio s { font-weight: 400; color: var(--tinta-3); font-size: .78rem; display: block; }

.co-totales { margin: 1.1rem 0 0; padding-top: .9rem; border-top: 1px solid var(--linea); display: flex; flex-direction: column; gap: .45rem; }
.co-totales > div { display: flex; justify-content: space-between; gap: 1rem; font-size: .9rem; }
.co-totales dt { color: var(--tinta-2); margin: 0; }
.co-totales dd { margin: 0; font-weight: 600; }
.co-ahorro { color: var(--ok); }
.co-total { margin-top: .5rem; padding-top: .7rem; border-top: 1px solid var(--linea); font-size: 1.1rem !important; }
.co-total dt { font-weight: 700; color: var(--tinta) !important; }
.co-total dd { font-weight: 800; letter-spacing: -.02em; }

.co-nota-envio { font-size: .8rem; color: var(--ok); margin: .8rem 0 0; font-weight: 500; }
.co-avisos { margin-top: .9rem; padding: .7rem .8rem; background: #fff8ed; border: 1px solid #f5d9a8; border-radius: 10px; font-size: .82rem; color: #7a5b1e; }
.co-avisos ul { margin: 0; padding-left: 1.1rem; }

/* ------------------------------------------------------------------ botones */
.co-submit {
    width: 100%;
    display: flex; align-items: center; justify-content: center; gap: .6rem;
    margin-top: .4rem;
    padding: 1rem 1.2rem;
    font: inherit; font-size: 1rem; font-weight: 700;
    color: #fff;
    background: linear-gradient(135deg, var(--acento), var(--acento2));
    border: 0; border-radius: 12px;
    cursor: pointer;
    transition: filter .15s, transform .05s;
    /* Área de toque cómoda en móvil. */
    min-height: 3.25rem;
}
.co-submit:hover:not(:disabled) { filter: brightness(1.06); }
.co-submit:active:not(:disabled) { transform: translateY(1px); }
.co-submit:disabled { opacity: .6; cursor: not-allowed; }
.co-submit:focus-visible { outline: 3px solid color-mix(in srgb, var(--acento) 45%, transparent); outline-offset: 2px; }

.co-btn {
    display: inline-flex; align-items: center; justify-content: center;
    padding: .8rem 1.4rem; min-height: 3rem;
    background: var(--acento); color: #fff;
    border-radius: 11px; text-decoration: none; font-weight: 700;
}
.co-btn:hover { filter: brightness(1.06); }
.co-btn-ghost { background: transparent; color: var(--tinta); border: 1px solid var(--linea-2); }

.co-legal { font-size: .78rem; color: var(--tinta-3); text-align: center; margin: .9rem 0 0; }
.co-legal a { color: var(--tinta-2); }

.co-alert {
    padding: .8rem .9rem; border-radius: 10px; margin-bottom: 1rem;
    background: #fdecea; border: 1px solid #f5c6c0; color: #8d2418;
    font-size: .88rem; font-weight: 500;
}

/* -------------------------------------------------------- vacío y confirmación */
.co-empty, .co-ok { text-align: center; padding: clamp(2rem, 10vw, 5rem) 1rem; max-width: 34rem; margin: 0 auto; }
.co-empty h1, .co-ok h1 { font-size: clamp(1.4rem, 5vw, 1.9rem); letter-spacing: -.03em; margin: 0 0 .5rem; }
.co-empty p { color: var(--tinta-2); margin: 0 0 1.4rem; }

.co-ok-icon {
    width: 3.6rem; height: 3.6rem; margin: 0 auto 1.1rem;
    border-radius: 50%; background: var(--ok); color: #fff;
    display: grid; place-items: center; font-size: 1.9rem; font-weight: 700;
}
.co-ok-folio { font-size: 1rem; color: var(--tinta-2); margin: 0 0 1rem; }
.co-ok-folio strong { font-family: ui-monospace, 'SF Mono', Menlo, monospace; color: var(--tinta); letter-spacing: .02em; }
.co-ok-pago {
    text-align: left; background: var(--papel); border: 1px solid var(--linea);
    border-radius: var(--radio); padding: 1.1rem; margin: 1.4rem 0;
    box-shadow: var(--sombra);
}
.co-ok-pago h3 { margin: 0 0 .7rem; font-size: .98rem; }
.co-ok-pago dl { margin: 0; display: flex; flex-direction: column; gap: .45rem; }
.co-ok-pago dl > div { display: flex; justify-content: space-between; gap: 1rem; font-size: .88rem; flex-wrap: wrap; }
.co-ok-pago dt { color: var(--tinta-2); }
.co-ok-pago dd { margin: 0; font-weight: 600; font-family: ui-monospace, 'SF Mono', Menlo, monospace; word-break: break-all; }
.co-ok-pago .co-instr { font-size: .85rem; color: var(--tinta-2); margin: .9rem 0 0; font-family: inherit; }
.co-ok-btns { display: flex; gap: .7rem; justify-content: center; flex-wrap: wrap; }

/* Respeta a quien pidió menos movimiento en su sistema. */
@media (prefers-reduced-motion: reduce) {
    * { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}