/* S29-T4 */
@layer components {
/* ============================================================
   BTN — Sistema de botones unificado (S29 R1-T4)
   API publica: .avn-btn + --cyan | --outline | --lg | --whatsapp | .avn-btn-group
   Legacy: .btn-primary / .btn-secondary agrupados aqui (eliminar en R4)
   ============================================================ */

/* Base */
.avn-btn,
.btn-primary,
.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .5rem;
    font-family: var(--avn-font);
    font-weight: 600;
    font-size: .95rem;
    line-height: 1;
    border-radius: var(--avn-radius-sm);
    padding: .75rem 1.75rem;
    text-decoration: none;
    cursor: pointer;
    border: 2px solid transparent;
    white-space: nowrap;
    min-height: var(--avn-tap-min);
    position: relative;
    overflow: hidden;
    transition: transform .2s ease, box-shadow .2s ease, background .2s, border-color .2s, color .2s;
}

.avn-btn:focus-visible,
.btn-primary:focus-visible,
.btn-secondary:focus-visible {
    outline: 2px solid var(--avn-accent);
    outline-offset: 3px;
}

/* Shine (cyan + legacy btn-primary) */
.avn-btn--cyan::after,
.btn-primary::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,.15), transparent);
    transform: translateX(-100%);
    transition: transform .4s ease;
}
.avn-btn--cyan:hover::after,
.btn-primary:hover::after { transform: translateX(100%); }

/* --cyan (primario) */
.avn-btn--cyan,
.btn-primary {
    background: var(--avn-accent);
    color: var(--avn-on-accent);
    border-color: transparent;
}
.avn-btn--cyan:hover,
.btn-primary:hover {
    background: var(--avn-accent-hover);
    color: var(--avn-on-accent);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0,217,255,.3);
}

.avn-btn--cyan:active,
.btn-primary:active { transform: translateY(0); }

/* --outline (secundario) */
.avn-btn--outline,
.btn-secondary {
    background: transparent;
    border-color: rgba(255,255,255,.18);
    color: var(--avn-text);
}
.avn-btn--outline:hover,
.btn-secondary:hover {
    border-color: var(--avn-accent);
    color: var(--avn-accent);
    background: rgba(0,217,255,.06);
    transform: translateY(-2px);
}

/* --lg */
.avn-btn--lg { padding: 1rem 2.25rem; font-size: 1.05rem; }

/* --whatsapp */
.avn-btn--whatsapp {
    background: var(--avn-whatsapp);
    color: #fff;
    border-color: transparent;
}
.avn-btn--whatsapp:hover {
    background: var(--avn-whatsapp-hover);
    color: #fff;
    transform: translateY(-2px);
}

/* Grupo */
.avn-btn-group {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    align-items: center;
}

} /* end @layer components */