/**
 * BAIRS — Stepper horizontal numerado con línea de progreso.
 * Usado en "Modo de trabajo" de Servicios.
 */

.bairs-stepper {
    padding: clamp(48px, 8vw, 96px) clamp(20px, 6vw, 64px);
    background: var(--color-bg-1, #0f141b);
    color: #fff;
    border-top: 1px solid var(--color-line, rgba(255,255,255,0.08));
}

.bairs-stepper-header {
    max-width: 1200px;
    margin: 0 auto var(--space-12, 48px);
}

.bairs-stepper-eyebrow {
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-primary-soft, #38bdf8);
    display: inline-block;
    margin-bottom: var(--space-3, 12px);
}

.bairs-stepper-title {
    font-family: var(--font-display);
    font-size: clamp(28px, 4vw, 48px);
    letter-spacing: -0.03em;
    margin: 0;
    text-wrap: balance;
}

.bairs-stepper-track {
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    display: grid;
    gap: var(--space-6, 24px);
    grid-template-columns: 1fr;
}

@media (min-width: 760px) {
    .bairs-stepper-track {
        grid-template-columns: repeat(var(--steps, 5), 1fr);
        gap: var(--space-4, 16px);
    }

    .bairs-stepper-track::before {
        content: '';
        position: absolute;
        top: 22px;
        left: calc(100% / var(--steps, 5) / 2);
        right: calc(100% / var(--steps, 5) / 2);
        height: 2px;
        background: var(--color-line, rgba(255,255,255,0.12));
        z-index: 0;
    }

    .bairs-stepper-track::after {
        content: '';
        position: absolute;
        top: 22px;
        left: calc(100% / var(--steps, 5) / 2);
        height: 2px;
        background: linear-gradient(90deg, var(--color-primary-soft, #38bdf8), var(--color-accent, #00d4ff));
        z-index: 1;
        width: 0;
        transition: width var(--dur-narrative, 700ms) var(--ease-out, ease);
        box-shadow: 0 0 12px rgba(56,189,248,0.45);
    }

    .bairs-stepper-track.is-revealed::after {
        width: calc(100% - 100% / var(--steps, 5));
    }
}

.bairs-stepper-item {
    position: relative;
    z-index: 2;
    text-align: left;
    padding: 0;
}

@media (min-width: 760px) {
    .bairs-stepper-item { text-align: center; }
}

.bairs-stepper-num {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--color-bg-0, #07090d);
    border: 2px solid var(--color-line, rgba(255,255,255,0.18));
    color: var(--color-primary-soft, #38bdf8);
    font-family: var(--font-mono);
    font-size: 14px;
    font-weight: 500;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 0 var(--space-3, 12px);
    transition: background var(--dur-normal, 320ms) var(--ease-out, ease),
                border-color var(--dur-normal, 320ms) var(--ease-out, ease),
                color var(--dur-normal, 320ms) var(--ease-out, ease),
                box-shadow var(--dur-normal, 320ms) var(--ease-out, ease);
}

@media (min-width: 760px) {
    .bairs-stepper-num { margin-left: auto; margin-right: auto; }
}

.bairs-stepper-item.is-on .bairs-stepper-num {
    background: var(--color-primary-soft, #38bdf8);
    color: var(--color-bg-0, #07090d);
    border-color: var(--color-primary-soft, #38bdf8);
    box-shadow: 0 0 0 6px rgba(56,189,248,0.18);
}

.bairs-stepper-item-title {
    font-family: var(--font-display);
    font-size: clamp(16px, 1.4vw, 18px);
    font-weight: 600;
    color: #fff;
    margin: 0 0 var(--space-2, 8px);
    text-wrap: balance;
}

.bairs-stepper-item-desc {
    color: rgba(255,255,255,0.7);
    font-size: 14px;
    line-height: 1.55;
    max-width: 28ch;
}

@media (min-width: 760px) {
    .bairs-stepper-item-desc { margin-left: auto; margin-right: auto; }
}

@media (prefers-reduced-motion: reduce) {
    .bairs-stepper-track::after,
    .bairs-stepper-num { transition: none !important; }
}